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Emerson Vission 20/20, Operation And Service Manual

The Emerson Vision 20/20 Operation and Service Manual is a comprehensive guide that equips users with the knowledge to operate and maintain this exceptional product effectively. With a simple download from our website, you can access this manual for free, ensuring a seamless experience with your Emerson Vision 20/20.

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Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0

Appendix B 

•

 Vission 20/20 Application Procedures

scale) away from the current position, then en-
ergize the capacity slide for a time that is propor-
tional to the amount it is away from the new target 
position.  To say it another way – the further you are 
away from the new target position – the longer the 
slide is energized in the proper direction.  This con-
trol region is called the proportional band region.

3.  If new target is > 10% (full scale) away from current 

position (greater than the proportional band re-
gion) – then energize continuously. 

There are mechanical properties that limit the speed at 
which the capacity of the compressor can be changed.  
The capacity slide actuators can only turn so fast.  The 
proportional change to the compressor capacity occurs 
at a 

fi

 xed rate. 

Caphold and Operation with VFD 
•  Using a VFD with a compressor requires considering 

the VFD capacity as part of the entire capacity of 
the compressor.  Typically, a VFD is operated from 
50% to 100% speed, therefore the VFD is considered 
½ the total capacity and the slide valve movement 
is considered the other ½ of total capacity.  When 
a VFD is employed, the normal control method is 
to 

fi

 rst move the capacity slide from 0-100% when 

additional refrigeration is required. When the capac-
ity slide is at 100% and additional capacity is still 
required, then the VFD is ramped up in speed.    It 
follows then that the 4-20ma Caphold signal is bro-
ken down into two parts:

•  4-12 mA = 0 -100 slide valve position
•  12-20ma = VFD minimum speed to VFD maxi-

mum speed. 

Consideration should also be given that when moving 
the capacity slide valve from 0-100%, the actual corre-
sponding capacity of the compressor is not changing in 
a linear relationship of 0-100%.  The last 15% travel of the 
slide valve results in a greater change of capacity than 
15%. Integrators should realize that the caphold value 
sent relates to slide valve “position” and not actual ca-
pacity of the compressor. For most purposes however, 
assuming a linear relationship is adequate.
The rate at which the capacity slide moves from 0-100%, 
and the rate at which the VFD increases speed from min-
imum to maximum is not the same.  So there are two 
different capacity pro

fi

 les that the integrator needs to 

consider. 

Remote Enable Output
•  When the compressor is off and in Remote mode, a 

REnable output will provide a signal to indicate that 
the 20/20 is in a condition where it is ready to be 
started.  No start inhibit conditions exists,  the 20/20 
is not in anti-recycle mode, and there are no trips 
active.   If the compressor is able to be started, then 
Remote Enable output will go on.   When the output 
is on, then closing the Remote Start/Stop input will 
initiate a compressor start.

NOTE

Once the compressor has started, the state of the 
Remote Enable Output is indeterminate, and has no 

meaning.

CONTROL SCENARIO

Once the Con

fi

 guration Screen has been con

fi

 gured for 

the desired type of Digital I/O control the Vission 20/20 
needs to be placed in REMOTE mode. To do this, press the 
green UNIT START button, then REMOTE.  The Remote 
Start-Stop input is now active.  The state of the Remote 
Enable Output should be determined by the controlling 
device. When it is determined to be on, then the control-
ling device can energize the Remote Start-Stop input.  
After the compressor has started, then the compressor 
capacity is controlled by the selected option.   Thought 
should also be given as to how the compressor will be 
restarted after a power failure occurs.

RESTART ON POWER FAILURE 

•  The Vission 20/20 allows for selection of different 

operations to occur after a power failure has oc-
curred.  The selections determine what mode of 
operation the 20/20 will be placed after the power is 
restored to the panel.  This should decided upon and 
setup prior to communicating to the 20/20 panel.

1. Always
2. Never
3. Timed
4.  Remote Lock Off
5.  Boot in Remote (Direct I/O)

1. Always 
•  If compressor was off prior to power failure, it will 

stay off after power is restored.

•  If compressor was running prior to power failure, 

it will begin an Auto-restart sequence as soon as 
power is restored.

•  In both cases, the Remote Lock will be ON after 

Summary of Contents for Vission 20/20

Page 1: ...Vission 20 20 micro controller Operation and service manual Version 2 0 ...

Page 2: ......

Page 3: ...e manufactured by others are not warranted by Seller but rather Seller merely passes through the manufacturer s warranty to Buyer SELLER EXPRESSLY DISCLAIMS ALL OTHER WARRANTIES WHETHER EXPRESS OR IMPLIED INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE Unless otherwise agreed in writing Buyer s sole remedy for breach of warranty is at Seller s option the re...

Page 4: ......

Page 5: ...the same time the local Vilter representative or the home office should be notified of any claim made All inquires should include the Vilter sales order number compressor serial and model number These can be found on the compressor nameplate on the compressor All requests for information services or parts should be directed to Vilter Manufacturing LLC Customer Service Department P O Box 8904 5555 ...

Page 6: ......

Page 7: ...Grounding 2 2 Mixing Voltages 2 2 DC signals 2 2 Wiring Methods 2 3 Best Practices 2 4 Section 3 Hardware Architecture Overview 3 1 Digital Input Output I O 3 2 Analog Inputs 3 4 Analog Outputs 3 6 Digital Analog I O Boards Layout 3 7 Digital Outpout Boards 3 8 Digital Input Boards 3 9 Digital In Out Boards 3 10 Analog Input Boards 3 11 Analog Input Jumper Tables 3 12 Analog Output Boards 3 14 Sec...

Page 8: ...ew 9 1 Scheduling Setpoint 9 1 Section 10 Compressor Sequencing Overview 10 1 Pressure Temperature Control Setpoints 10 1 Capacity Load Unload Timers 10 2 Compressor Sequencing Table 10 3 Configuration Overview 10 5 Compressor Setup for Slave Compressor Sequencing 10 5 Compressor Setup for Master Compressor Sequencing 10 7 Section 11 Condenser Control Overview 11 1 Condenser Control Setpoint 11 1 ...

Page 9: ... 16 1 Event list Columns 16 1 Section 17 Input Output Overview 17 1 Section 18 Auxiliary Input Output Overview 18 1 Digital Inputs 18 1 Digital Outputs 18 2 Analog Inputs 18 2 Analog Outputs 18 4 Control 18 4 Section 19 Configuration Overview 19 1 Units 19 1 Time Date 19 2 Communications 19 2 Touchscreen 19 2 Anti Recycle 19 3 Restart On Power Failure 19 3 Compressor Sequencing 19 3 Language 19 3 ...

Page 10: ...iew 23 1 Screen Features 23 1 Section 24 Twin Screw Control Overview 24 1 Setup Configuration Screen 24 1 Operation 24 2 Slide Calibration Capacity Slide Valve Potentiometer 24 2 Section 25 Cool Compression Control Overview 25 1 Setup 25 1 Control Functions 25 2 Operational Differences from Single Screw 25 4 Section 26 Remote Oil Cooler Overview 26 1 Remote Oil Cooler Setpoint 26 1 Step Control 26...

Page 11: ...t Start Pop Up Window 4 4 Figure 4 5 Bottom Status Bar 4 5 Figure 4 6 Splash Screen 4 6 Figure 5 1 Menu Screen 5 1 Figure 5 2 Menu Screen with Remote Oil Cooler Enabled 5 2 Figure 6 1 Compressor Control Screen Suction Pressure Control 6 1 Figure 6 2 Compressor Control Screen Process Temperature Control 6 2 Figure 6 3 Proportional Band Setpoint 6 3 Figure 6 4 Compressor Control Screen VFD Settings ...

Page 12: ...nput Output Screen Page 2 17 2 Figure 17 3 Input Output Screen Page 3 17 2 Figure 17 4 Input Output Screen Page 4 17 3 Figure 17 5 Input Output Screen Page 4 Remote Oil Cooler Enabled 17 3 Figure 17 6 Input Output Screen Freeze Data Page 17 4 Figure 18 1 Auxiliary I O Screen Digital Inputs Page 1 18 1 Figure 18 2 Auxiliary I O Screen Digital Outputs Page 2 18 3 Figure 18 3 Auxiliary I O Screen Ana...

Page 13: ...gure 24 2 Slide Calibration Twin Screw Control 24 2 Figure 24 3 Slide Calibration Twin Screw Bump Pop Up Window 24 3 Figure 25 1 Cool Compression Control Screen 25 1 Figure 25 2 Compressor Control Screen Cool Compression Control Page 4 25 2 Figure 26 1 Remote Oil Cooler Screen Page 1 26 1 Figure 26 2 Remote Oil Cooler VFD Screen Page 2 26 3 ...

Page 14: ... Oil Cooler Appendix A Vission 20 20 Troubleshooting Guide Appendix B Application Procedures It is highly recommended that the manual be reviewed prior to servicing the Vission 20 20 system parts Figuresandtablesareincludedtoillustratekeyconcepts Safety precautions are shown throughout the manual They are defined as the following WARNING Warning statements are shown when there are hazardous situat...

Page 15: ... Failure Filter Diff Press Safety Changeover timer expires 60 sec after start Is Filter Diff Hi Filter Diff Press Run Trip Setpt for 5 seconds Oil Separator Temp Safety Changeover Timer expires 5 min after start Is Oil Sep Temp Lo Oil Sep Run Reset setpt Run Run Filter Diff Press Failure Lo Run Oil Sep Temp Failure Is Motor Amps FLA ON Setpt Is Dsch Press Cutin ON Setpt Is Dsch Press Cutout OFF Se...

Page 16: ...ts Is Suction Press Suct Press Cap Dec ON Setpt Capacity Increase Disabled Normal Loading and Unloading Decrease compressor capacity until Suction Press Suction Press Cap Decrease ON setpoint Is Suction Press Suct Press Cap Dec OFF Setpt Yes Yes No No Suction Pressure Override Load Limit During Temperature Control Section 1 Operational Flow Charts ...

Page 17: ...e gauges Voltage Source Transformers block a large percentage of Electro Magnetic Interference EMI The Vilter Vission 20 20 should be isolated with its own con trol transformer for the most reliable operation see Figure 2 1 Connecting the Vilter Vission 20 20 to breaker panels and central control transformers exposes the Vission 20 20 to large amounts of EMI emitted from the other devices connecte...

Page 18: ... Mixing Voltages Separate different voltages from each other and sep arate AC from DC see Figure 2 4 Figure 2 4 Mixed Voltage Wiring Each voltage level must be run in separate conduit If your installation site has wire ways or conduit trays dividers must be installed between the different voltages DC signals If your installation site has wire ways or conduit trays dividers must be installed betwee...

Page 19: ...35391SC 2 0 Section 2 Installation Recommendations Figure 2 5 Correct Transformer Wiring Method Wiring Methods Each Vission 20 20 panel should have its own indi vidual control transformer see Figure 2 5 and Figure 2 6 Figure 2 6 Incorrect Transformer Wiring Method ...

Page 20: ...ing to keep water from entering the enclosure The Vission 20 20 is supplied with pre punched conduit holes Use them Don t Don t run wires through the Vission 20 20 enclosure that are not related to the compres sor control Don t add relays timers transformers etc in the Vission 20 20 enclosure without first check ing with Vilter Don trunconduitintothetopofanenclosure Don t run refrigerant tubing in...

Page 21: ...x operating system For hardware archi tecture see Figure 3 1 The Vission 20 20 has the following attributes Low power Industrial rated X 86 CPU 15 XGA high resolution LCD display Outdoor view able LCD optional 8 wire touch screen operator interface Flexible and expandable I O NEMA 4 enclosure NEMA 4X optional Industrial temperature range design Figure 3 1 Hardware Architecture Overview ...

Page 22: ...has no Trips If a trip is issued the output de energizes and stays de energized until the trip condition is cleared Slide Valve Setpoint 1 Output Economizer Port 1 Normally used for an economizer solenoid but could be used for other devices When the compressor slide valve percentage is equal to or greater than slide valve set point 1 the output is energized When the compressor slide valve percenta...

Page 23: ... Economizer Port 2 OUTPUT 2 13 Liquid Injection 1 OUTPUT 2 14 Liquid Injection 2 OUTPUT 2 15 Remote Enabled OUTPUT 2 16 Shunt Trip OUTPUT 3 17 Comp Motor Starter Auxiliary Contact INPUT 3 18 High Level Shutdown INPUT 3 19 Oil Level Float Switch 1 INPUT 3 20 Oil Level Float Switch 2 INPUT 3 21 Remote Setpoint 1 2 Selection INPUT 3 22 Remote Start Stop INPUT 3 23 Remote Capacity Increase INPUT 3 24 ...

Page 24: ...ol scheme using the remote increase and remote decrease inputs for compressor control If the compressor is enabled for remote I O control this input is enabled Operational only when the com pressor is running Energizing this input will increase the slide valve position The slide valve will continuously increase as long as this input is energized The slide valve will not in crease when this input i...

Page 25: ...rature 4 20 mA RTD ICTD 7 15 Condenser Pressure 0 5V 1 5 V 0 10V 4 20 mA RTD ICTD 7 16 Remote Caphold Setpoint 0 5V 4 20 mA RTD ICTD 8 17 Auxiliary 1 0 5V 1 5 V 0 10V 4 20 mA RTD ICTD 8 18 Auxiliary 2 0 5V 1 5 V 0 10V 4 20 mA RTD ICTD 8 19 Auxiliary 3 0 5V 1 5 V 0 10V 4 20 mA RTD ICTD 8 20 Auxiliary 4 0 5V 1 5 V 0 10V 4 20 mA RTD ICTD 8 21 Auxiliary 5 0 5V 1 5 V 0 10V 4 20 mA RTD ICTD 8 22 Auxilia...

Page 26: ...s 4 20mA Process temperature cali bration and range are set in the calibration screen Chiller Inlet Temperature Default signal is 4 20mA Measures separator level Chiller Inlet Temperature calibration and range are set in the calibration screen Condenser Pressure Default signal is 4 20mA Condenser pressure trans ducer range and calibration is set in the calibration screen Remote Caphold Default sig...

Page 27: ...liary 16 0 5V 1 5 V 0 10V 4 20 mA RTD ICTD Table 3 2 Analog Inputs 2 of 2 Digital Analog I O Boards Layout It is important to install the boards in the proper layout For the correct digital and analog input output I O board layout see Figure 3 2 Dipswitches Each board has a dipswitch which sets its communi cations address so that it can communicate with the CPU board The dipswitch settings must be...

Page 28: ...e These LEDs in dicated when a 120Vac output is being produced Voltage LEDs Marked in the diagram below in Orange These LEDs indicate the correct voltage of both the 5Vdc and 24Vdc power sources Communication LEDs Marked in the diagram below in Green These LEDs show the active communications between the digital output board and the Vission 20 20 CPU board Address Dipswitches Markedinthediagrambelo...

Page 29: ...e LEDs indicate when a 120Vac input is detected Voltage LEDs Marked in the diagram below in Orange These LEDs indicate the correct voltage of both the 5Vdc and 24Vdc power sources Communication LEDs Marked in the diagram below in Green These LEDs show the active communications between the digital output board and the Vission 20 20 CPU board Address Dipswitches Marked in the diagram below in Red Th...

Page 30: ...d light blue for inputs These LEDs indicate when a 120Vac output is being produced or a 120Vac signal is detected Voltage LEDs Marked in the diagram below in Orange These LEDs indicate the correct voltage of both the 5Vdc and 24Vdc power sources Communication LEDs Marked in the diagram below in Green These LEDs show the active communications between the digital output board and the Vission 20 20 C...

Page 31: ...nge for incoming analog signals For the correct jumper setting for a giving application see Table 3 4 Analog Input Jumper Tables Voltage LEDs Marked in the diagram below in Orange These LEDs indicate the correct voltage of both the 5Vdc and 24Vdc power sources Communication LEDs Marked in the diagram below in Green These LEDs show the active communications between the digital output board and the ...

Page 32: ...n 0 5 AMP secondary current transformers are installed in the motor starter Use Analog Input 1 B when current transformers are installed in the motor starter CHANNEL 2 SIGNAL JP 4 JP 5 JP 6 JP 28 Analog Input 2 0 5 VOLT OUT OUT OUT OUT 1 5 VOLT OUT OUT OUT OUT 0 10 VOLT OUT OUT IN OUT 4 20 mA IN OUT OUT OUT ICTD OUT IN OUT OUT RTD OUT OUT OUT IN CHANNEL 3 SIGNAL JP 7 JP 8 JP 9 JP 29 Analog Input 3...

Page 33: ...T OUT OUT OUT 0 10 VOLT OUT OUT IN OUT 4 20 mA IN OUT OUT OUT ICTD OUT IN OUT OUT RTD OUT OUT OUT IN CHANNEL 7 SIGNAL JP 19 JP 20 JP 21 JP 33 JP 25 Analog Input 7 0 5 VOLT OUT OUT OUT OUT 2 1 5 VOLT OUT OUT OUT OUT 2 0 10 VOLT OUT OUT IN OUT 2 4 20 mA IN OUT OUT OUT 2 ICTD OUT IN OUT OUT 2 RTD OUT OUT OUT IN 2 ACTUATOR OUT OUT OUT OUT 1 POTENTIOMETER OUT OUT OUT OUT 3 CHANNEL 8 SIGNAL JP 22 JP 23 ...

Page 34: ...ese LEDs indicate the correct voltage of both the 5Vdc and 24Vdc power sources Communication LEDs Marked in the diagram below in Green These LEDs show the active communications between the digital output board and the Vission 20 20 CPU board Address Dipswitches MarkedinthediagrambelowinRed Thesedipswitch es are used to assign each board its address position The addresses are binary and therefore t...

Page 35: ... suc ceeding screens and provides as much information as possible at a glance The Main Screen is divided into four sections Three of the sections are static Top Status Bar Bottom Status Bar and Parameters Bar These three sec tions of the main screen will remain visible while navigat ing through other screens and provide a constant view of critical information The splash screen is the only dy namic...

Page 36: ...r that the compressor motor is currently running Information Bars will flash their information over the top of the status bar The operator will see the status bar and then one or more information bars in a repetitive sequence Information Bar blue Shows various operational modes that are different than normal running condition An example of this would be a load limit condition The compressor is not...

Page 37: ...izontal blue bar In some cases in crease and decrease buttons will appear below the volume indicator The buttons only appear if the op erator who is logged on has sufficient privileges If available the buttons work to increase and decrease the volume slide position in the same manner as the capacity slide Stop Button When pressed stops the compressor in all cases Remote Lock Out Button When presse...

Page 38: ...Screen In the case that the Run mode is in re mote capacity control this box will show the desired capacity position The suction box shows the current suction pressure and suction temperature The discharge box shows the current dis charge pressure and discharge temperature The oil box shows the pressure differential which is calculated as oil filter out pressure mi nus suction pressure Filter diff...

Page 39: ... login screen to create additional users Log off Button Pressing the log off button logs off the correct user if any are logged in Help Button Pressing the help button takes the operator to the help screen where the operator can access an opera tion and service manual and also get access to pro gram information Status Bars The information available is provide by two status bars one for maintenance...

Page 40: ...Separator Displays the temperature of the oil in the separator Cap Displays the position of the capacity slide from 0 to 100 Process When the Process control is selected as the control mode this box will appear and displays the process temperature Vol Displays the position of the volume slide from 0 to 100 Anti Recycle Displays the anti recycle time if applicable Oil Pump The oil pump on a Vilter ...

Page 41: ...e timer screen where the operator can set the various time related parameters Compressor Scheduling Navigates to the compressor scheduling screen where the operator can set the scheduler to change the control method at settable dates and times Compressor Sequencing Navigates to the compressor sequencing screen where the operator can set up compressor to se quence up to four other compressors This ...

Page 42: ...nalog and digi tal input and outputs Also allows viewing of a snap shot of all analog and digital input and outputs at the time of the last compressor fault event Auxiliary I O Navigates to the auxiliary I O screen where an op erator can configure any auxiliary instruments or devices Configuration Navigates to configuration screens where the initial system parameters are configured Data Backup All...

Page 43: ...ation Suction Pressure Control and Process Temperature Control The Vission 20 20 uses a pulse proportional control method to control the compressor capacity slide valve in order to maintain the control setpoint The control setpoint can either be process temperature control set point or suction pressure control setpoint depending on what the operator has selected as the control mode For screens see...

Page 44: ... of the propor tional band By default the proportional band is set to 4 Psig and the dead band is set to 10 of 4 Psig Making the dead band 0 4 Psig of the control setpoint Once the process variable is within the dead band the algo rithm considers the compressor to be on setpoint If the operator wishes the compressor to operate closer the setpoint can be set to a smaller percentage However this wil...

Page 45: ...ump down mode will cause the compressor to cycle off via the Pump down Stop Pressure setpoint and will not allow the compressor to start again Enable Enables the Auto cycle control Uncheck the box to disable the Auto cycle set points Start Pressure When the suction pressure meets or exceeds this set point the compressor will start Start Delay Delays the compressor from starting when the suc tion p...

Page 46: ...mum speed In the unloading direction the motor speed will ramp down to its minimum speed and then the capacity slide will move to its minimum position The two step control method works much like the one step method but divides the control into four sec tions see Figure 6 6 While loading the compressor will first move the capacity slide to the maximum set for step one then speed up the motor to its...

Page 47: ... to adjust the motor speed action in direct pro portion to the difference between the control set point and the process variable SP PV error This is a unit less quantity and is used for coarse adjustment This setpoint should be set to the lowest value that gives adequate control system response Increasing the proportional setting increases the control sys tem s sensitivity to small process fluctua...

Page 48: ... to its maximum position and ramp up the motor speed up to its maximum speed In the unloading direction the motor speed will ramp down to its mini mum speed keeping capacity slide loaded to maximum In this manner capacity load is handled by varying mo tor speed only VFD Speed Range Defines the Minimum and Maximum speed for the motor speed These values should reflect the full range of the VFD Warm ...

Page 49: ...the Pumpdown Stop Pressure Pumpdown This checkbox enables the Pumpdown feature If this box is unchecked Pumpdown setpoints are ig nored and the user is not allowed to edit Pumpdown setpoints Stop Pressure This setpoint defines the suction pressure value at which the compressor will cycle off Normally this setpoint is set below the Suction Pressure Auto cycle Stop Pressure setpoint Stop Delay This ...

Page 50: ...ours of pulldown time Pick a reasonable step pressure of 5 psig for every step This defines a change of 80 20 60 psig 1 Note First step is applied immediately So first step starts at 85 5 80 psig 2 Number of steps delta 60 psig change 1 step 5 psig 12 steps 3 Delay per Step 48 hours 12 steps 4 hours step 4 So for the first 4 hours the compressor runs at 80 psig 5 Next 4 hours 75 psig 6 Next 4 hour...

Page 51: ...ressor will be controlled at each step Stop Pressure This setpoint defines the suction pressure value at which Pulldown operation will get completed When suction pressure value is equal to or goes below this setpoint Pulldown feature disables itself Also Pulldown and Initiate Pulldown at Next Start checkboxes will be automatically deselected as nor mally this is one time use feature Auto Cycle Dif...

Page 52: ...rce unload feature s primary pur pose is to attempt to prevent the compressor from tripping off due to particular instrument reading For example if the suction pressure drops too low the com pressor will trip off for safety reasons However the stop load force unload algorithm recognizes a potential trip and either stops the compressor from loading up or even unloads the compressor to prevent the t...

Page 53: ...mizable by the operator see Figure 6 10 Slide Valve Setpoint Operator editable labels for the each output Only Economizer Port 2 Label is non editable Slide Indicates the capacity slide position where the digital output is triggered State Below Setpoint Defines the state of the digital output when the slide position is below the Slide setpoint The operator can choose between N O or N C This setpoi...

Page 54: ...nable Load Anticipation Algorithm Allows the operator to choose if the load anticipation algorithm runs Rate Dead Band Defines the rate at which the capacity slide move ment will be interrupted This value is an absolute val ue of the process variable For example the default value is 0 25 If the control mode is suction pressure then this value is 0 25 Psig or if process temperature is the control m...

Page 55: ...pping off The operator can choose to enable the minimum value position that automatically sets the liquid injection motorized value to the specified value whenever the discharge temperature has fallen below the Liquid inj Setpoint 1 This feature nearly eliminates the overshoot of the PID in the downward direction and reduces the chance of the compressor tripping off due to low oil temperature The ...

Page 56: ...ting increases the control system s sensitivity to small discharge temperature fluctuations and the tendency to hunt I Integral reset This parameter integrates the error over time to ac count for a small error that has persisted for a long time This quantity is used for fine adjustment This setpoint is used to smooth out discharge tempera ture variations This setpoint should be set high enough to ...

Page 57: ...e event list accessible from the menu screen Trips also trigger the input output screen to take a snapshot of all input and output values as freeze screen The freeze screens are available as left side tabs in the input output screens and are very useful as a troubleshooting tool for the operator The Vission 20 20 uses Warnings as a way to notify the operator of parameters that may inhibit the comp...

Page 58: ... drop in process tempera ture below the setpoint value Reference Figure 7 2 Low Suction Temperature Alarm Trip This is the low suction temperature safety The alarm or trip will be activated if the suction temperature drops below the setpoint value High Discharge Temperature Alarm Trip This is the high discharge temperature safety The alarm or trip will be activated if the discharge tem perature ri...

Page 59: ...ture Trip Only This is the starting high discharge superheat tem perature safety This safety is active when superheat monitor is enabled in the configuration screen The compressor is prevented from starting or running if the superheat is above the setpoint value The warn ing or trip will be activated if the superheat tem perature rises above the setpoint value There is no ALARM setpoint High Super...

Page 60: ...s manifold pressure minus discharge pressure during the start sequence zeroed prelube oil pressure difference value is shown on main screen during start sequence The prelube oil pressure is redefined as manifold pressure minus suction pressure after the start sequence This safety insures adequate lubrication of the compressor at startup Low Run Oil Pressure Alarm Trip This is the running oil press...

Page 61: ...he compressor the inhibits are checked first before the oil pump is started or the motor is started The failed starts due to an inhibit does not count toward any of the anti recycle timers including hot starts The Inhibits uses the alarm setpoint to trigger an aborted start and message All inhibits will be logged in the event list Safety Failure Messages Low Suction Pressure Trip This message will...

Page 62: ...moved from the designated input module refer to wiring dia gram This safety will activate only after the oil level has been low for the time period defined by the Low Oil Separator Safety Trip Delay timer Compressor Warnings High Level Shutdown Warning This message will appear when High Level Shutdown switch is Active Low Low Process Temp Warning This message will appear when Process Control Tempe...

Page 63: ...ip checks from occurring until the compressor has started and then the time has expired Delays Delays require the condition to occur for the speci fied amount of time Timers A general timer requiring the time to expire before the listed event can occur Timer Setpoints Capacity Increase Start Delay At compressor startup the capacity slide position is held at minimum position for this time period Th...

Page 64: ... message will be displayed This timer is available if the unit is equipped with a low oil separator float switch the oil level switch is standard on all liquid injection units and optional on all others Low Oil Separator Temperature Safety Changeover ThistimerallowsLowOilSeparatorStartTemperature safety setpoint to protect the compressor against cold oil during starting After the timer has expired...

Page 65: ... typically pull much more than its rates full load amps for a short time This timer ig nores that sudden inrush of current for the specified time Emergency Stop Timer Defines the amount of time the compressor is in a False start condition before activating the Emergency stop The emergency stop output can be connected to a shunt trip in the case of a run away compressor to remove all power to the s...

Page 66: ...8 4 Blank Vission 20 20 Operation and Service Manual Vilter Emerson 35391SC 2 0 ...

Page 67: ...n order invalid events are marked with caution symbol to indicate the operator to correct events and then enable feature Control Mode These drop down boxes allow selection of operat ing modes which gets switched once schedule event time is achieved The list of allowable modes depends on the number of controllers selected in the configuration screen For example if the number of Suction Pressure Con...

Page 68: ...2 hour format and 0 23 for 24 hour for mat The range of values allowed to set for Minutes setpoint is 0 59 AM PM selection is active for se lection only when Time Format selected in configura tion screen is 12 hour When scheduling feature is enabled and No of control lers for Suction Pressure Control Process Temperature Control are changed in configuration screen which makes control modes selected...

Page 69: ...the outer pressure temperature setpoint offset to monitor compressor load If Suction pres sure process temperature surpasses Load Rate 1 off set and goes beyond Load Rate 2 setpoint offset then sequencing decisions are made according to Load Rate 2 timer Load Rate 1 offset inner Defines the inner pressure temp setpoint offset to monitor compressor load If Suction pressure pro cess temperature goes...

Page 70: ...e monitored to identify which one of the following timers to be used Load Rate 1 Inner If Suction Pressure Process Temperature goes be yond Load Rate 1 setpoint offset then Load Rate 1 timer is used to make periodic sequencing decisions Load Rate 2 Outer If Suction Pressure Process Temperature surpasses Load Rate 1 offset and goes beyond Load Rate 2 set point offset then Load Rate 2 timer is used ...

Page 71: ...encing table Control Inclusion exclusion of compressor partaking in the sequencing can be decided on basis of this toggle button Compressors can be included excluded by toggling ON OFF NOTE SwitchingacompressorcontroltoOFFwhenrunning in auto seq mode puts respective slave compressor into local auto mode This feature is used to add or remove slave compressors to sequence table when running in auto ...

Page 72: ...ompressor once Start decision is taken Machine Stop Time Machine Stop timer shows the time in sec that the Master Compressor will hold before stopping slave compressor once Stop decision is taken Refresh NOTE Before Configuring Sequencing table on Master Compressor log on to slave compressors one by one and enable sequencing in slave mode put slave in remote mode Then log on to Master Compressor a...

Page 73: ...UENCING 1 Log onto each of the slave compressors one by one and navigate to the Configuration screen refer ence Screen1 2 Enable the ethernet port and select the Modbus TCP protocol 3 Enable the sequencing in slave mode 4 Setup a unique ethernet IP address for each slave 5 Setup the subnet mask for the IP address 6 Setup the Gateway address MUST DO 7 Select a unique name for each slave compressor ...

Page 74: ...t ing its status information over the network at a rate of every 15 seconds After the Master Compressor is con figured the slave information will be populated to the Sequencing menu of the Master Compressor 11 Exit out of the configuration screen and then put slave in remote mode by pressing Unit Start Remote Figure 10 5 Placing Slave Compressors in Remote Mode ...

Page 75: ...Ethernet IP address for the master 5 Select a unique name for the master compressor 6 Setup the subnet mask for the IP address 7 Setup the Gateway address MUST DO 8 Select a unique name for the master compressor 9 Leave the panel ID at 1 10 Set the Communications Active Remote Control to ETHERNET 11 Apply these settings before exiting the Configuration screen see Figure 10 6 At this point the mast...

Page 76: ...10 8 Blank Vission 20 20 Operation and Service Manual Vilter Emerson 35391SC 2 0 ...

Page 77: ...ump is turned on The VFD will modulate down and then once it is back up to 100 again then the next fan or pump is turned on This method allows the smoothest condenser control by spacing the VFD between the fan and pump steps while maintaining a condenser pressure that matches the setpoint Condenser Control Setpoint Run Mode Run Mode allows the selection of different modes of operation for condense...

Page 78: ... Speed Fan Delay This is a time delay for the fan spin down in case of 2 speed motor dual speed fan Summer Winter Auto Switch This checkbox when enabled allows profiles to switch automatically depending on ambient temperature setpoint when Run Mode is Auto When ambient temperature falls below ambient temperature set point winter profile is used Similarly when ambient temperature is above ambient t...

Page 79: ...s adequate control system re sponse Increasing the proportional setting increases the control system s sensitivity to small process fluc tuations and the tendency to hunt I Integral reset Used to adjust the capacity control action integrat ing the error over time to account for a small er ror that has persisted for a long time This quantity is used for fine adjustment This setpoint is used to smoo...

Page 80: ...11 4 Vission 20 20 Operation and Service Manual Vilter Emerson 35391SC 2 0 Section 11 Condenser Control Figure 11 2 Condenser Control Screen Page 2 ...

Page 81: ... output at the terminal block or view the output by watching the LEDs located on the cards For Digital Output screens see Figures 12 1 12 2 12 3 and 12 4 Reference Figure 12 1 Compressor Start Activates the output assigned to the compressor mo tor starter The output is connected to terminal 11 and is the 1st LED on card 1 Oil Pump Start Activates the output assigned to the oil pump The output is c...

Page 82: ...utput The output is connected to terminal 18 and is the bottom LED on card 1 Reference Figure 12 2 Slide Valve Setpoint 1 Economizer Activates the output typically assigned to the econo mizer solenoid but can be changed by the operator The output is connected to terminal 21 and is the 1st LED on card 2 Slide Valve Setpoint 2 Hot Gas Bypass Activates the output typically assigned to the hot gas byp...

Page 83: ... a breaker with a shunt trip that feeds power to a starter to force a shutdown The output is connected to terminal 28 and is the 8th LED on card 2 Reference Figure 12 3 and Figure 12 4 Condenser Remote Oil Cooler Step 1 Activates the output assigned to the 1st step of the Condenser Remote Oil Cooler The output is con nected to terminal 41 and is the 1st LED on card 4 Condenser Remote Oil Cooler St...

Page 84: ... Service Options Condenser Remote Oil Cooler Step 4 Activates the output assigned to the 4th step of the Condenser Remote Oil Cooler The output is con nected to terminal 44 and is the 4th LED down on card 4 Figure 12 4 Service Options Screen Digital Outputs for Remote Oil Cooler Page 3 ...

Page 85: ...essor VFD The output is connected to AO 1 on card 10 Condenser Remote Oil Cooler VFD Sets the analog output assigned to the Condenser Remote Oil Cooler VFD The output is connected to AO 2 on card 10 Slide Valve Position Figure 12 5 Service Options Screen Analog Outputs Page 4 Sets the analog output assigned to the Slide Value position used to inform a central control system of the capacity positio...

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Page 87: ...bration process Therefore any changes to the calibration setpoint will effect what value is shown All instruments are calibrated using a two point linear calibration process Any device that has a non linear re sponse to environmental stimuli will not be able to be calibrated through the Vission 20 20 Pressure and Temperature Inputs The most commonly used instruments are tempera ture and pressure s...

Page 88: ...ssion 20 20 has two options for measuring motor current A 4 20mA signal transmitted from an external device or a 0 5Amp AC current Transformer The type of device being used is selected in the Configuration Screen Motor Current Device in Section 19 The motor current tab has the ability to calibrate both measurement options through the 4 20mA scale and current transformer ratio sections see Figure 1...

Page 89: ...recalculate the point slope calcu lations of the current calibration Total Error Not editable by the operator Displays the total error offset of entries from the Enter Desired Value setpoint Current Transformer Ratio Primary Defines the upper value of the current transformer Secondary Not editable by the operator Defines the minimum value of the current transformer Enter Desired Value The operator...

Page 90: ...ts This section of the Calibration screen allows the opera tor to define the parameters of an installed auxiliary ana log instrument These instruments are usually not part of a typical compressor setup but Vission 20 20 provides a way for the operator to add additional capabilities The layout of this screen is typical to the pressure and tem perature calibration screens For Analog Inputs screens s...

Page 91: ...ignal type and range transmitted by the instrument The operator can choose from several predefined ranges in the drop down box or enter a value Analog Outputs The Analog output card of the Vission 20 20 generates a 4 20mA signal to any attached devices However it is not uncommon that small difference in the board com ponents might result in small difference in the output So this screen offers the ...

Page 92: ...put Offset mA By entering the value of the error from the calibrated value and the actual value into the offset entry box that error will be added subtracted from the mA val ue The offset is applied to the mA value which should correct the error Resolution of error should not be less than 0 01 Apply Changes Min mA and Max mA values are stored to data base on press of this button Offset mA value wh...

Page 93: ...ual value in percent of the ca pacity slide without any conditioning that might be ap plied to the other capacity position displays In addition this section displays the value of the actuator signals in millivolts in the input Value display box Button When the operator presses and holds this button the output associated with capacity slide decrease is energized If the actuator does not turn in the...

Page 94: ...ult in a number of undesirable consequences By default the soft ware limits are set to 150mV from either end point The position percentage is calculated from the soft ware limits Therefore It is possible to read a value greater than 100 or less than 0 if inertial carries the slides after these limits are reached Slide Valve Operation The slide valve actuator is a gear motor with a position sensor ...

Page 95: ...ellow TURCK cable in the control panel to reverse the rotation of the motor CAUTION DO NOT CONTINUE TO ENERGIZE THE ACTUATOR MOTOR AFTER THE SLIDE HAS REACHED THE MECHANICAL STOP Doing so may cause mechanical damage to the motor or shear the motor shaft key When the slide has reached the mechanical stop position press the button in the center of the photo chopper to release the brake and thereby r...

Page 96: ...14 4 Vission 20 20 Operation and Service Manual Vilter Emerson 35391SC 2 0 Section 14 Slide Calibration Figure 14 3 Menu Screen and Slide Calibration Button Vission 20 20 ...

Page 97: ...d release the BLUE CALIBRATION BUTTON on the ACTUATOR motor once The RED LED will stop flashing This now instructs the ACTUATOR mo tor that this point is the maximum slide position This point corresponds to 5 volts The ACTUATOR calibration procedure is completed Now the Capacity Channel is automatically calibrated based on the calibration settings made to the actuator CAUTION Do not over tigten sc...

Page 98: ...2 4 283 0 63 227 2 473 VSS 1051 CCW CW CCW CW 1 22 439 4 777 0 74 266 2 889 VSS 1201 CCW CW CCW CW 1 22 439 4 777 0 74 266 2 889 VSS 1301 CCW CW CCW CW 1 22 439 4 777 0 74 266 2 889 VSS 1501 CCW CW CCW CW 1 36 490 5 325 0 82 295 3 200 VSS 1551 CCW CW CCW CW 1 48 533 5 823 0 87 313 3 433 VSS 1801 CCW CW CCW CW 1 36 490 5 325 0 82 295 3 200 VSS 1851 CCW CW CCW CW 1 48 533 5 823 0 87 313 3 433 VSS 21...

Page 99: ... boards with an electronics cleaner or compressed air The calibrate button is stuck down Try to free the stuck button The position sensor has failed Replace the actuator The actuator goes into calibration mode spontaneously Push button is being held down for more that second when going through the calibration procedure Depress the button quickly and then let go Each second the button is held down ...

Page 100: ...failed Replace the actuator There is a broken motor lead or winding Replace the actuator The motor will not move in either direction The thermal switch has tripped be cause the motor is overheated The motor will resume operation when it cools This could be caused by a malfunctioning control panel Consult the factory Any of the reasons listed in The mo tor operates in one direction only See above T...

Page 101: ...t working If this is the case the slide valve actuator will have to be replaced The operation of the slotted optocouplers can be tested as follows 1 Manually rotate the motor shaft until the aluminum photo chopper fence is not blocking either of the opto coupler slots 2 Using a digital multimeter measure the DC voltage between terminal 3 of the small terminal block and TP1 on the circuit board see...

Page 102: ...asure 0 Volts The 24V supply voltage is low This will occur momen tarily when the actuator is powered up and on power down If the problem persists measure the voltage using a digital multimeter between terminals 3 and 4 of the small terminal block If the voltage is less than 24V the problem is in the supply to the board If the voltage is 24V replace the actuator The EEPROM data is bad This is usua...

Page 103: ...based on its range of values over the entire data plot ted on screen The data available for display is 120 hours maximum Chart Operation Pen Selection Pen selection allows operator to select different pens for plotting of data on the screen The operator can select None as an option for disabling plotting of data for particular pen Options in pen selection drop down box will depend on channels sele...

Page 104: ...dvancing on the display without stopping the trend feature When the Hold button in pressed Hold Time is displayed on the screen Trace Back Forward These buttons allow the operator to move a white cursor line across trend lines and view trend data value at that point These buttons will only be active when Trace button is pressed When these buttons are pressed cursor is moved and trace position is u...

Page 105: ...perator to select a maximum of 10 analog I O channels for trending The operator can also set a path for trend data files from the drop down box in the setup screen The USB will appear as an option in drop down box only when a USB drive is mounted on the panel If there is no space available on the USB or when the USB is unmounted from the panel and USB is selected for sav ing trend files trend data...

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Page 107: ...and can list up to 128 separate events The operator can download the information on the event list through the Data Backup Screen Event list Columns Date Displays the date of the event in MM DD YYYY format Time Displays the time of the event in HH MM SS format Event Type Displays the type of message for a particular listing Common type are Start Stop Trip Inhibit Alarm and System These help the op...

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Page 109: ...g see Figures 17 1 17 2 17 3 17 4 and 17 5 This screen also takes a snapshot of all the I O points if the compressor experiences a trip condition and saves this data as Freeze pages for example see Figure 17 6 Up to five Freeze pages can be saved The oldest Freeze page will be re moved when more than five Freeze events occur These Freeze events can be downloaded to a USB drive though the Data Back...

Page 110: ...17 2 Vission 20 20 Operation and Service Manual Vilter Emerson 35391SC 2 0 Section 17 Input Output Figure 17 2 Input Output Screen Page 2 Figure 17 3 Input Output Screen Page 3 ...

Page 111: ...17 3 Vission 20 20 Operation and Service Manual Vilter Emerson 35391SC 2 0 Section 17 Input Output Figure 17 4 Input Output Screen Page 4 Figure 17 5 Input Output Screen Page 4 Remote Oil Cooler Enabled ...

Page 112: ...17 4 Vission 20 20 Operation and Service Manual Vilter Emerson 35391SC 2 0 Figure 17 6 Input Output Screen Freeze Data Page Section 17 Input Output ...

Page 113: ...igital Inputs section of the auxiliary I O allows an operator to configure the auxiliary digital inputs see Figure 18 1 The digital input can be configured to produce an alarm a trip and an inhibit on either a high or low input A low input is 0vac and a high is 120vac on the enabled input Leaving all options in their default set ting will mean no action will be taken on an enable input The input w...

Page 114: ...or example if a trigger value of 100 is en tered with a differential of 1 then as the value increases to 101 the output will be triggered If the value decreases to 99 then the output will be toggled in the opposite direction Digital Relay The digital relay option is used to pass along the in formation from a digital input to another control de vice or to operate a peripheral device This output can...

Page 115: ...sion 20 20 Operation and Service Manual Vilter Emerson 35391SC 1 9 Section 18 Auxiliary Input Output Figure 18 2 Auxiliary I O Screen Digital Outputs Page 2 Figure 18 3 Auxiliary I O Screen Analog Inputs Page 3 ...

Page 116: ...d PID Control P Proportional gain Used to adjust the auxiliary output in direct propor tion to the difference between the control setpoint and the active input The proportional term is a unit less quantity and is used for coarse adjustment This setpoint should be set to the lowest value that gives adequate control system response Increasing the proportional setting increases the control system s s...

Page 117: ...ssion 20 20 Operation and Service Manual Vilter Emerson 35391SC 1 9 Figure 18 4 Auxiliary I O Screen Analog Inputs Page 4 Figure 18 5 Auxiliary I O Screen Analog Inputs Page 5 Section 18 Auxiliary Input Output ...

Page 118: ...sion 20 20 Operation and Service Manual Vilter Emerson 35391SC 1 9 Section 18 Auxiliary Input Output Figure 18 6 Auxiliary I O Screen Analog Outputs Page 6 Figure 18 7 Auxiliary I O Screen Analog Outputs Page 7 ...

Page 119: ...x to select the temperature units from Fahrenheit and Celsius Once selected all screen temperatures will be displayed in the chosen units Press Units Drop down Box to select the pressure units Psig Bar and Kpa are the possible selections and the units will be displayed for every pressure value throughout the screens Order Num Identifies the Order number of the purchase of the compressor This Numbe...

Page 120: ... I O Enables the Direct I O inputs Once selected a pop up will be displayed and the operator will need to choose a one of the three Direct I O options Serial Modbus RTU Enables the Serial Modbus RTU protocol Once se lected the remainder of the serial setpoints will be available for editing Panel ID Panel Identifier used by the controller when commu nicating with multiple panels Port The Vission 20...

Page 121: ...o mode Remote Lock Off When selected turns the remote lock out off when the panel powers up Select this option if the opera tor wishes a system controller to regain control of the Vission 20 20 without human interference Boot in Remote Direct I O When selected places the panel into remote mode when the panel powers up Select this option when under direct I O control and the system controller is to...

Page 122: ...ased on the process temperature The operator has the option to select up to two controllers where each can have its own set of setpoints Optional Function Selection The following options are additional features of the Vission 20 20 that can be selected Some of these op tions will not be available for selection unless the proper I O cards are installed and enabled see Figure 19 2 Compressor VFD Ena...

Page 123: ...ime Enables option for full time oil pump Oil pump will always be running while the compressor is running Pumps Not currently used Oil Flow Control Enables option for oil flow control Oil flow control will vary analog output for controlling danfoss valve opening depending on capacity slide position Oil flow control output will be regulated only when com pressor is running start condition is over i...

Page 124: ...ent Device The Vission 20 20 can read the motor current in a couple of different ways The following selections defines the method see Figure 19 2 Current Transformer This defines the input used for motor current when a current transformer is used 4 20ma Transformer This defines the input used for motor current ...

Page 125: ...everal digital inputs that the op erator can choose how the input will be used Once an input is enabled the Auxiliary I O screen will be available from the menu screen where the operator can further define the inputs operation see Figure 19 3 Enable Input Enables the selected digital input Set Name Allows the operator to assign a name to the input Section 19 Configuration ...

Page 126: ...input will be used Once an input is enabled the Auxiliary I O screen will be available from the menu screen where the operator can further define the inputs operation see Figure 19 4 Enable Input Enables the selected analog input Set Name Allows the operator to assign a name to the input Section 19 Configuration Figure 19 4 Configuration Screen Analog Auxiliaries Page 4 ...

Page 127: ...ther define the outputs operation see Figure 19 5 Enable Output Enables the selected analog output Set Name Allows the operator to assign a name to the output Digital Outputs The Vission 20 20 has several Digital outputs that the operator can choose how the output will be used Once an output is enabled the Auxiliary I O screen will be available from the menu screen where the operator can further d...

Page 128: ...Digital Output card 2 is enabled Digital Input 1 Not editable by the operator Identifies that the Digital Input card 1 is enabled Digital Input Output 1 Enables the optional digital input output card 1 Digital Input Output 2 Enables the optional digital input output card 2 Analog Input 1 Not editable by the operator Identifies that the Analog Input card 1 is enabled Analog Input 2 Not editable by ...

Page 129: ...new program In addition this screen also allows the operator to reset all values to the factory defaults All of the information saved to the USB flash drive is open information Meaning none of the information is encrypted and the operator is free to examine it The log files are all saved as simple ASCII text and the databases can be examined with SQLite Refresh The Refresh button is used to initia...

Page 130: ...B flash drive selected in the Available Devices window The information from the Vission 20 20 will be contained into a zip file So a zip file will have to be selected to load or overwritten when saved Once a zip files is selected the name will be shown in the filename window Unmount By pressing the Unmount button any USB drive se lected in the Available Devices window will be dis connected from th...

Page 131: ...d have to use the following migrate but ton is if a new Vission 20 20 program is loaded over an existing Flash card see Figure 20 2 Migrate This button initiates the migrate function Factory Reset The Factory reset button offers the operator the ability to reset all the Vission 20 20 setpoints back to the facto ry default settings or a specific database If the operator finds that a screen will not...

Page 132: ...e saved to a USB drive from Save Load screen by selecting Setpoints Report option in Data Items during backup of database CSV file can be imported in any spread sheet applica tion During the course of operation operator can gen erate reports any time see Figure 20 3 All Select Selecting All will include all screen in the report that is generated When Select is chosen the op erator can choice which...

Page 133: ...r has selected the item to sign off pressing the Update button at the bottom of the page will perform the sign off operation and list the maintenance per formed in the maintenance log Maintenance Name This column of tasks that should be performed at the run hours indicated in Maintenance interval column Selectthecheckboxfromthemaintenancetaskname and press update button to perform the sign off Mai...

Page 134: ...n descending order see Figure 21 2 Date Lists the date the maintenance task was performed Time Lists the time the maintenance task was performed User Lists the operator name who performed the mainte nance task Maintenance Performed Lists the maintenance task that was performed Run Hours Lists the run hours at which the maintenance task was performed Chart This chart is the original maintenance cha...

Page 135: ...21 3 Vission 20 20 Operation and Service Manual Vilter Emerson 35391SC 2 0 Section 21 Maintenance Figure 21 3 Maintenance Screen Chart ...

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Page 137: ...his level of access Level 2 This is a supervisor level of access Setpoints that require a higher level of knowledge such as cali brating instrument will be available to an operator with this level of access Level 3 This is considered a contractor level of ac cess The setpoints available at this level have the most potential of causing damage to the compressor Therefore this access is restricted to...

Page 138: ...s username The operator can either select the username from the op erators window or enter the username manually by touching the entry box and entering the name via the pop up keyboard Operator Password This entry box is for the operator s password The password can be entered by touching the password entry box and entering the password via the pop up keyboard Manage Accounts This tab allows the ad...

Page 139: ...ed by touching the password entry box and entering the password via the pop up keyboard Verify Password This entry box is to verify the operator s password Verifying the password can be entered by touching the Verify Password entry box and entering the password via the pop up keyboard Security Level Select a security level for the account being added or modified Only levels that are equal to or le...

Page 140: ...ure 22 3 Change VNC Password New Password The operator will add the password by touching the entry box and typing the password via the pop up keyboard Verify New Password The operator will re enter the password by touching the entry box and typing the password via the pop up keyboard Update Pressing this button will initiate the modification of the VNC account Change VNC Port Number Port Number Th...

Page 141: ... there are any PDF type documents on a connected USB drive the names will be listed in this section The operator will have to navigate through the file structure of the USB drive to find the documents The top box in the USB drive will display any USB drives mounted to the Vission 20 20 OS Touching one of the listed USB devices will select that device and list any files or PDF documents contained o...

Page 142: ...ndow to fit the entire screen Page Enter the page number the operator wishes to be dis played in the display window Previous Changes the page in the display window one page less then what was showing Next Changes the page in the display window one page more then what was showing Version Pressing the Version button displays a pop up screen that gives the operator information of the version of softw...

Page 143: ...x labeled Operation Type will appear directly be low the Compressor drop down box You should also notice that the oil pump control becomes grayed out because the oil pump operation is now deter mined by the type of compressor that is select from the Type drop down box Standard Selects the oil pump operation as Full Time Stal Selects the oil pump control as No pump Menu Changes When selecting the t...

Page 144: ...tical information and control parameters related to the capacity slide actuator The cap display shows the actual value in percent of the capacity slide without any conditioning that might be applied to the other capacity position displays In addi tion this section displays the value of the actuator sig nals in millivolts in the input Value display box see Figure 24 2 Button When the operator press...

Page 145: ...stops which could result in a number of undesirable consequences By default the soft ware limits are set to 150mV from either end point The position percentage is calculated from the soft ware limits Therefore it is possible to read a value greater than 100 or less than 0 if inertial carries the slides after these limits are reached Position Signal Type Position signals can be 0 5 VDC or 4 20mA to...

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Page 147: ...an initial pressure drop in the suc tion chamber of the compressor and a corresponding increase in pressure on the discharge of the compres sor This creates a pressure differential that forces the oil and liquid ammonia mixture through the suction oil injection line into the suction chamber of the compres sor This oil and liquid provides lubrication and cooling until full pressure differential lub...

Page 148: ...ing Valve Settings Auto Load Auto load operation will force the compressor to load to a minimum value once the compressor has started By loading the compressor to a minimum value and maintaining this capacity a pressure ratio is created across the compressor to ensure adequate lubrication of the compressor and also that the com pressor does not experience high discharge super heat conditions Since...

Page 149: ...and reaches a value of 8 F or more then the compressor will be unloaded until the superheat drops below 8 F or the capacity has reached the SOI Load Limit setting Using a Positioning Valve for Liquid Ammonia Level Control A level probe inserted in the oil separator detects liquid ammonia level Based on the level of the am monia 0 100 the level probe sends a directly pro portional 4 20 mA signal to...

Page 150: ...quid ammonia level changes Low high Pressure Oil Injection ports control as Pressure Ratio and Superheat temperature changes Supplemental Oil Cooling Solenoids Some cool compression units will have supplemental oil cooling solenoids One is called the suction liquid injection solenoid and is controlled via discharge su perheat When the discharge superheat reaches 5 F the solenoid is turned on When ...

Page 151: ...needed the next fan or pump is brought on The VFD will modulate down and then back up to 100 again then the next fan or pump is brought on This method allows the smoothest Remote Oil Cooler control by spacing the VFD between the fan and pump steps while maintaining a Remote Oil Cooler Temperature pressure that matches the setpoint Remote Oil Cooler Setpoint Run Mode Run Mode allows the selection o...

Page 152: ...e removed once VFD has reached its minimum speed setpoint and the delay timers are satisfied Step Delay acts as ON timer while loading and acts as OFF timer while unloading for the same step Low Speed Fan Allows steps to have option for time delay in case of fan spin down Any of Out 1 to Out 4 can be se lected as Low Speed Fan through combo box E g Let s say Out 2 is selected as Low Speed Fan in S...

Page 153: ...an be set as 100 which is when analog output at which Remote Oil Cooler VFD fan is connected reaches to 20mA in its normal range of 4 20mA Minimum Speed This setpoint defines the minimum speed in percent age for Remote Oil Cooler VFD Fan at which it should run for continuous step delay time to decrease Remote Oil Cooler steps E g let s say setpoint is kept at5 ThenRemoteOilCoolerVFDfanwillhavetoru...

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Page 155: ...oved from the board before physical inspection Visually check cable connections located on the LCD inverter board This board is located inside the door on the LCD touch screen back plane next to the single board computer Physically inspect board to insure that all cable connectors are connected tightly to the board connectors If these are inserted correctly the problem could be a bad LCD inverter ...

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Page 157: ...abase Backup Procedure B 19 Flashcard Replacement Procedure B 21 Danfoss Liquid Injection Valve Setup B 23 User Access Menu B 25 Remote Control and Monitoring of Vission 20 20 Control Panel B 27 Phoenix Contact PSM ME RS485 RS485 P Isolator B 49 Vessel Level Control Setup for Vission 20 20 Control Panel B 51 VPLUS AC Motor Setup Procedure for Vission 20 20 Panel B 59 VPLUS DC Motor Setup Procedure...

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Page 159: ...onal safety the Low Suction Pressure Alarm and Trip setpoints should also be set so that the suction pressure will not reach a point that can cause building damage due to water freeze SETUP The Pulldown section in the Compressor Control Menu provides Selection to enable disable the Pulldown process Selection to initiate the Pulldown process at the next compressor start Step pressure defines the st...

Page 160: ...d to get to setpoint is 10 days 240 hours of Pulldown time Suction pressure change allowed for each step is 5 psig Figure B 1 Pulldown Setpoints So for the first 20 hours the compressor runs at 75 psig then for the next 20 hours at 70 psig then for the next 20 hours at 65 psig and so forth After the 12th step running at 25 psig 240 hours will have elapsed and the new setpoint changes to 20 psig Af...

Page 161: ...setpoint The Pulldown setpoints are immediately calculated Initial Pulldown setpoint Current Suction Pressure 80 psig minus Step Pressure 5 psig 75 psig Auto Cycle Start Pressure Pulldown setpoint 75 psig plus Auto Cycle Differential 4 psig 79 psig Auto cycle Stop Pressure Pulldown setpoint 75 psig minus Auto Cycle Differential 4 psig 71 psig The compressor will maintain the suction pressure at 75...

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Page 163: ...e setpoint SETUP The configuration screen must first be setup to enable two setpoints see Figure B 2 To enable the two setpoint operation do the following In the section Compressor Control enter 2 for each control in the Controllers box COMPRESSOR CONTROL SETPOINTS Navigate to the Compressor Control screen and enter in the desired control setpoints for both Setpoint 1 and Setpoint 2 Log in to set ...

Page 164: ...B 8 Vission 20 20 Operation and Service Manual Vilter Emerson 35391SC 2 0 Appendix B Vission 20 20 Application Procedures Figure B 3 Compressor Control Setpoint 1 and Setpoint 2 Setup ...

Page 165: ...soon as you make the switch depending upon the setting of the new active setpoint SAFETY SETPOINTS In Figure B 5 the Alarm and Trip Safety setpoints also have Setpoint 1 and Setpoint 2 settings These should be set up for proper operation when operating DIRECT I O OPERATION AND SETPOINT 1 AND SETPOINT 2 SELECTION If the compressor is being operated in Direct I O mode then selection of the active se...

Page 166: ...C 2 0 Appendix B Vission 20 20 Application Procedures Figure B 5 Alarm and Trip Safety Setpoints for Setpoint 1 and Setpoint 2 SERIAL OR ETHERNET OPERATION AND SETPOINT 1 AND SETPOINT 2 SELECTION Refer to Table B 4 for register information for setting the active setpoint ...

Page 167: ...rol parameter changes value it will make deci sions to start stop load and unload slave compressors as needed to maintain the control setpoint which is de fined in the master compressor Sequencing screen NOTE The master compressor will ALWAYS be priority 1 compressor andactasthetrimcompressor Sothis must be taken into account when deciding which compressor is to act as the master compressor The fo...

Page 168: ...mpressors then revert to Local control When the panels revert to Local control then the Auto cycle setpoints would become active SETUP OF MASTER COMPRESSOR FOR SEQUENCING SLAVE COMPRESSORS Logon to the Master Compressor and navigate to the Compressor Sequencing screen page 2 Wait until all slaves names show up under Equipment List on the last page of the Compressor Sequencing menu Use the Refresh ...

Page 169: ...etpoint offset to monitor compressor load If suction pres sure process temperature surpasses the control setpoint load rate 1 offset and goes beyond the control setpoint load rate 2 offset then sequencing decisions are made according to load rate 2 timer Load Rate 1 Offset Inner Defines the inner pressure temp setpoint offset to monitor compressor load If suction pressure proc temp surpasses the C...

Page 170: ... Equipment Options of this combo box are updated automatically This contains names of all the com pressors in the network communicating with the Master compressor Operator can select Equipment name from drop down list Operator should make sure that same equipment name is not repeated in the table If it is rename the offending slave s Examples of acceptable unique names master slave no 1 slave no 2...

Page 171: ...es preference on first step value Maximum capacity value takes prefer ence over last step value Example Configured step 5 Configured min cap 10 Configured max cap 80 Program starts loading compressor in steps of 5 so every interval values will be Interval 1 10 min cap Interval 2 10 5 15 Interval 3 15 5 20 Interval 4 20 5 25 Last Interval 75 5 80 max cap MIN CAP MAX CAP master compressor Defines th...

Page 172: ...mpressors one by one and enable the sequencing in slave mode from the Configuration screen then put each slave in Remote mode Then log onto the master compressor and wait until all slave names show up in the Equipment List table CONFIGURING SEQUENCING TABLE ON MASTER COMPRESSOR 1 Select correct compressor name from Equipment drop down list 2 Assign Priority for the slave compressor 3 Assign Step s...

Page 173: ...till it reaches its Max Cap value Once slave 1 starts running at Max Cap value and suction pres sure is still not within deadband i e load rate 1 offset value of 20 2 22 psig then program starts machine start timer 120 sec for next priority compressor slave 2 Thisprocessiscontinuedtilleithersetpointisachieved or all compressors are running at their Max Cap values OVERVIEW OF COMPRESSOR UNLOADING T...

Page 174: ...k into the sequencing routine The slave compressor can be put back into remote mode for sequencing by pressing Auto Start Remote again on the slave compressor It will resume its set priority order and any future com mand to increase capacity of a slave compressor will re sult in the compressor being restarted 1 Master experiencing a Failure When the master compressor experiences an operation al fa...

Page 175: ...32MB 1 With the original flashcard installed into the 20 20 SBC insert the flashdrive into the USB port This port is located along the right side of the single board computer below the flashcard Please ref erence the picture in the section titled Flashcard Replacement Procedure Hardcopy 2 Logon using the Vilter username and password physics 3 Navigate to the Data Backup screen 4 Under Available De...

Page 176: ... to be re entered Early version programs actually saved two Alarm and Trip setpoints tables onto the old flash card and when saving the tables to the thumbdrive during the Database backup procedure the old pro gram backed up the wrong table to the thumbdrive When a database restore load procedure is done with the new program the new program recognizes that the Alarm and Trip tables are not correct...

Page 177: ...re discharge temperature oil separator tempera ture oil manifold temperature and process temperature 10 Instrument Calibration Misc page a Record current transformer ratio 11 Maintenance Notes all 12 Compressor Runtime REPLACE FLASH CARD Refer to Figure B 9 1 Remove power from Vission 20 20 panel 2 Remove old flashcard and install new flashcard and power panel back up RE ENTER OPERATING SETPOINTS ...

Page 178: ...B 22 Vission 20 20 Operation and Service Manual Vilter Emerson 35391SC 2 0 Appendix B Vission 20 20 Application Procedures Figure B 9 Flashcard Replacement ...

Page 179: ... Unit Manual for proper Danfoss ICM valve setup procedure Figure B 10 Configuration Screen Page 2 Oil Cooling section The Danfoss Liquid Injection valve is selected from the Configuration Screen Page 2 Under Oil Cooling Section The settings for the Danfoss Liquid Injection are setup in the Compressor Control Menu Page 4 Figure B 11 Compressor Control Menu Page 4 Liquid Injection settings ...

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Page 181: ... Apply button before exiting the Logon screen to make this change permanent Use the information below to determine the user level assignments Actions Note Level 0 elementary control No password associated with this level Allowed to view all screens that are enabled Level 1 operator level low level user Level 2 operator level advanced user Level 3 full access supervisor Level 0 user level no login ...

Page 182: ...pulse time level 1 Auto cycle setpoints level 1 Enable Disable and modify all setpoints Pumpdown setpoints level 1 Enable Disable and modify all setpoints Pulldown setpoints level 1 Enable Disable and modify all setpoints Constraints level 3 Configuration Page 1 level 2 Run hours needs to be level 3 Page 2 level 2 Page 3 level 3 Page 4 level 3 Page 5 level 3 Page 6 level 3 Set language level 2 Hel...

Page 183: ...munication links The cables listed below are all 24 gauge 7x32 stranded with 100 ohm nominal im pedance and a capacitance of 12 5 pF ft Select from the following four three and two pair cables depending on your application needs All will yield satisfactory results It is recommended that you choose a cable with one more pair than your application requires Use one of the extra wires rather than the ...

Page 184: ... The first option is connector P12 which uses tradi tional serial UART hardware The second option uses the USB ports P14 or P18 These ports require the use of an inexpensive industrial USB to RS422 RS485 convertor Vilter can supply these or you can purchase your own For serial communications we recommend using the USB ports first because of the robustness of the USB ports They also offer increased...

Page 185: ...nvertor VPN3485C on USB port P18 The above photo shows a typical connection for using one of the USB ports in this case P18 for Modbus RTU serial communications The USB port has a USB to RS422 RS485 convertor attached to it VPN 3485C One side of the convertor attaches to the USB port The green plug of the convertor would then be connected to the RS422 or RS485 network network wiring is not shown ...

Page 186: ...edures Figure B 14 Selecting USB Port for Serial Communication The Vission 20 20 panel allows designating the USB port to be used for serial Modbus RTU communication from the Configuration screen A USB device must be plugged into one of the USB ports in order for the Serial USB option to appear from the drop down box ...

Page 187: ...r can be used to pro vide a device on the serial network with isolation The isolator repeater suppresses surges that may be present on the network wires and optically isolates and converts unbalanced lines to balanced lines It can also act as an RS422 to RS485 convertor while providing the same network isolation Vilter stocks a network repeater iso lator for the 20 20 panels VPN 3485MS USING VPN34...

Page 188: ...G THE DEVICE AS A NETWORK ISOLATOR REPEATER Reference Figure B 17 1 A DC power supply is required to power the device 10vDC to 30vDC 2 Dip switches on each side of the device must be configured for the baud rate of the network Figure B 17 Wiring Diagram VPN3485MS Device as Network Isolator Repeater Table B 2 Baud Rate Selection ...

Page 189: ...B 33 Vission 20 20 Operation and Service Manual Vilter Emerson 35391SC 2 0 Appendix B Vission 20 20 Application Procedures Table B 3 RS422 485 Switch Settings Figure B 18 VPN3485MS DIN Rail Mounted ...

Page 190: ...work might be dictated by the plant IT department One com mon configuration is the star type topology where a master device will connect to a switch and all devices Figure B 19 Ethernet Network Topology participating on the network Vission 20 20 panels will also be connected to the switch All Vission 20 20 pan els would have unique static IP addresses and the master would communicate to each ...

Page 191: ...s It is recommended to work with them to setup an acceptable network The configurations below are examples only Setup and support of these networks are beyond the ability of Vilter Example 1 InFigureB 20 thisexampleshowsaPCconnectedtothe internet running a program which accesses a PC within a plant Both computers would have a Remote Desktop program running on them that allows the off sight PC to c...

Page 192: ...ned to a company router There would be a separate IP address for each 20 20 panel in the plant Figure B 21 Network Configuration for Access via Internet Example 2 Example 3 In Figure B 22 this example shows a PC connected to the internet running a VNC client program which accesses the Vission 20 20 panels by specifying an IP ad dress along with a router port designation Each Vission 20 20 panel ha...

Page 193: ...NC client application connect ing to the internet The VNC client connects to the remote site router which has an outside accessible IP address The Vission 20 20 boxes have built in VNC servers The Ethernet ports on the Vission 20 20 panels would be setup for Modbus TCP protocol When the connection is made Figure B 23 Network Configuration for Access via Internet Example 4 the VNC client applicatio...

Page 194: ...0 20 panel does not have a separate processor to handle communications from a computer or PLC All tasks that the panel needs to accomplish are done by a single processor So when a device communicates to the panel the polling rate to the 20 20 panel can t be unlim ited it needs to be governed A typical compressor control scheme might look like this For communication register information refer Table...

Page 195: ...B 39 Vission 20 20 Operation and Service Manual Vilter Emerson 35391SC 2 0 Appendix B Vission 20 20 Application Procedures Figure B 24 Typical Block Diagram of a Multi Compressor Control Scheme 2 of 4 ...

Page 196: ...B 40 Vission 20 20 Operation and Service Manual Vilter Emerson 35391SC 2 0 Appendix B Vission 20 20 Application Procedures Figure B 24 Typical Block Diagram of a Multi Compressor Control Scheme 3 of 4 ...

Page 197: ...erson 35391SC 2 0 Appendix B Vission 20 20 Application Procedures Figure B 24 Typical Block Diagram of a Multi Compressor Control Scheme 4 of 4 The actual control scheme that you use will depend upon the response of the process that you are trying to control ...

Page 198: ...baud rate data bits stop bits parity and panel ID number which is node number for Modbus RTU Once the port is setup properly communication can be established You will be able to read from and write see note to registers NOTE In order to write to a register in the Control Block region of Modbus registers 40500 through 40513 the Vission 20 20 panel must be placed into Remote mode by pressing the gre...

Page 199: ...pressor Command register region until someone walks up to the panel and presses Unit Start Remote 3 Timed The compressor WILL attempt a restart after power is restored and the Max Restart After Power Failure timer has timed out The Remote Lock will be ON after power is restored which means it will not accept any writes via communication within the Compressor Command register region until someone w...

Page 200: ... compressor can be changed The capacity slide actuators can only turn so fast The proportional change to the compressor capacity occurs at a fixed rate Caphold and Operation with VFD Using a VFD with a compressor requires considering the VFD capacity as part of the entire capacity of the compressor Typically a VFD is operated from 50 to 100 speed therefore the VFD is considered the total capacity ...

Page 201: ...B 24 For Direct I O control Configure Active Remote Control drop down box to Direct I O This selection activates the Remote Start Stop digital input This is the ONLY selection that activates the Remote Start Stop digital input Below Active Remote Control selection box check the Direct I O box A popup Direct I O Control Type box now appears From the popup Direct I O Control Type box select desired ...

Page 202: ...compressor For most purposes however assuming a linear relationship is adequate The rate at which the capacity slide moves from 0 100 and the rate at which the VFD increases speed from min imum to maximum is not the same So there are two different capacity profiles that the integrator needs to consider Remote Enable Output When the compressor is off and in Remote mode a REnable output will provide...

Page 203: ...irect I O The Vission 20 20 panel will boot up with the Remote Lock OFF and be placed into REMOTE mode which will allow the panel to accept Direct I O com mands immediately after power is restored to the panel REMOTE MONITORING It should be noted that while the compressor is being controlled starting stopping and capacity control via hard wired inputs monitoring of com pressor operating parameters...

Page 204: ...B 48 Blank Vission 20 20 Operation and Service Manual Vilter Emerson 35391SC 2 0 ...

Page 205: ...ce will not be passed through the device onto the network The following test shown in Figure B 25 was setup and performed to measure the benefits of the isolator on an RS485 serial network run ning Modbus RTU protocol NOTE ThePhoenixContactPSM MErepeaterwaspowered from the 24vDC supply from the Vission 20 20 panel in this test t TERMINATION RESISTORS FOR A B ARE ON t SELECT BAUD RATE SWITCHES TO M...

Page 206: ...to the Vission 20 20 RS485 serial port The follow ing screen capture from the scope shows the amount of noise on the network signals see Figure B 27 Figure B 27 Network Noise Test 2 The second test measured the noise on the active net work with the Phoenix Contact PSM ME isolator installed in the network The following screen capture from the scopeshowstheamountofnoiseonthenetworksignals The noise ...

Page 207: ...RE An additional analog input card is required to sense the 4 20ma signal from the level probe An analog output card is required to output a 4 20ma signal to the positioning valve thereby increasing and decreasing the amount of liquid being fed to the vessel If a level switch is installed in or on the vessel for an alarm or trip function then an additional digital input card will be required as we...

Page 208: ... provide a name for the analog output s You ll need to refer ence your wiring diagram to determine which analog output s need to be enabled In the example in Figure B 30 Auxiliary 1 Analog Output was renamed to Chiller Level 4 20 Out and Auxiliary 2 Analog Output was renamed to Condenser Level 4 20 Out Referencing the wiring diagram please note that Aux 1 Analog Output corresponds to AO 5 on the w...

Page 209: ...diagram to determine which ana log inputs need to be enabled In the example in Figure B 31 Auxiliary 5 Analog Input was renamed to Chiller Level 4 20 Input and Auxiliary 6 Analog Input was renamed to Condenser Level 4 20 Inputs Referencing the wiring diagram please note that Aux 5 Analog Input corresponds to Channel 21 on the wiring diagram and Aux 6 Analog Input corre sponds to Channel 22 on the ...

Page 210: ...xiliary analog input s These inputs are 4 20ma signals and the scaling will be setup so that a The units of this signal are in percent b 4 ma signal corresponds to 0 level c 20 ma signal corresponds to a 100 level The setup example shown in Figure B 32 Auxiliary 5 Analog Input was setup so that the units of the input will readout in percent At 4 0ma input the level percent age is equal to 0 0 At 2...

Page 211: ...ompressor from starting if the analog input falls below the Low Alarm setpoint or above the Hi Alarm setpoint If the compressor is running while this occurs it will not shutdown if the Alarm Only func tion were selected as shown below In the example in Figure B 33 Auxiliary 5 and 6 Analog Inputs were setup to function as Alarm Only The alarm points have been set to 0 and 75 level These values woul...

Page 212: ...ompressor is running For the setup in Figure B 34 the Auxiliary 1 analog out put signal which is the 4 20 ma signal to the chiller Level positioning valve is controlled by the Auxiliary Input Chiller Level 4 20 input which was configured in Steps 3 4 and 5 above PID Control has been selected with a 50 setpoint The Trigger Input is enabled and the trigger setpoint is set at 50 same as the setpoint ...

Page 213: ... the setup for the condenser PID control The setup is almost the same with the exception that the trigger condition is selected so that it goes true when the chiller level rises above the setpoint only then will the auxiliary analog output control be enabled In the above example when the chiller level is below 50 the positioning valve will be fully closed As it rises above 50 then the position ing...

Page 214: ...B 58 Vission 20 20 Operation and Service Manual Vilter Emerson 35391SC 2 0 Appendix B Vission 20 20 Application Procedures Figure B 35 Proportional Level Control Auxiliary I O Page 6 ...

Page 215: ...ed on discharge temperature As the discharge temperature varies from the liquid injection control setpoint a modu lating 4 20ma signal wired to the AC motor VFD will ad just the speed of the motor This document provides instructions to help setup the Vission 20 20 for VPLUS control ADDITIONAL HARDWARE In order to control the VPLUS pump motor VFD an ana log output card is required The 4 20ma signal...

Page 216: ...nual Vilter Emerson 35391SC 2 0 Appendix B Vission 20 20 Application Procedures Figure B 37 Digital Output Card Wiring to VPLUS Liquid Injection Solenoid The liquid injection solenoid needs to be wired to Digital Output board 2 output location 5 ...

Page 217: ...ection of Installed Boards Log on and navigate to the Configuration screen page number 6 Insure that all boards that are physically installed into the Vission 20 20 panel have been selected or checked You should have the additional board 10 installed analog output board and selected Continue to Step 2 Figure B 38 Selection of Installed Analog Output Board Configuration Screen Page 6 ...

Page 218: ...s is the same one that is used to control the oil cooling motorized positioning valve Navigate to page 2 of the Configuration screen In the middle column towards the bottom of page 2 are the Oil Cooling selections see Figure B 39 Select Liquid Injection method and then select the Motorized Valve selection Note that by se lecting the positioning valve algorithm the speed of the VPLUS motor is being...

Page 219: ...sor Control settings page Setup the Motorized Control Valve setting as show below in Figure B 40 Setpoint 135 deg F Motorized Valve Control P 25 0 I 1 0 D 4 0 Minimum Valve Open Percent De selected Avg with Oil Manifold Temperature De selected Oil Separator Temp Override 100 deg F Depending upon the size of the oil separator the P term may have to be adjusted to give proper response of the 4 20ma ...

Page 220: ...B 64 Blank Vission 20 20 Operation and Service Manual Vilter Emerson 35391SC 2 0 ...

Page 221: ... and compares the average to a setpoint Based on the error from the setpoint the temperature controller then sends a varying 4 20ma signal to a Dart speed con trol board which varies the speed of a DC motor The speed of the motor controls the amount of liquid refrig erant that is injected into the compressor to provide oil cooling The Vission 20 20 has oil cooling controller algorithms built into ...

Page 222: ...Service Manual Vilter Emerson 35391SC 2 0 Appendix B Vission 20 20 Application Procedures Figure B 42 Temperature Controller Wiring Removed After removing the temperature controller wiring the wiring diagram will look like Figure B 42 ...

Page 223: ... card must be wired to the Dart speed controller board The ana log output that is used for this is AO 4 see Figure B 43 Wires from AO 4 will land on wires 106 and 107 see Figure B 42 3 Finally the VPLUS relay CRV shown in Figure B 42 must also be wired to the Vission 20 20 This relay will be controlled by the Vission 20 20 digital out put board 2 output 5 the liquid injection so lenoid output Run ...

Page 224: ...B 68 Vission 20 20 Operation and Service Manual Vilter Emerson 35391SC 2 0 Appendix B Vission 20 20 Application Procedures Figure B 44 Digital Output Card Wiring to VPLUS CRV Relay Terminal 104 ...

Page 225: ... Screen Selection of Installed Boards Logon and navigate to the Configuration screen page number 6 Insure that all boards that are physically installed into the 20 20 panel have been selected or checked You should have the additional board 10 installed analog output board and selected Continue to step 2 Figure B 45 Selection of Installed Boards Configuration Screen Page 6 ...

Page 226: ...screen In the middle column towards the bottom of page 2 are the Oil Cooling selections see Figure B 46 Select Liquid Injection method and then select the Motorized Valve selection Note that by selecting the positioning valve algorithm the speed of the VPLUS motor is being controlled based on the dis charge temperature only The original VPLUS tempera ture controller had thermocouples that sensed b...

Page 227: ...n In the middle column towards the bottom of page 2 are the Oil Cooling selections ref erence Figure 6 below Select Liquid Injection meth od and then select the Motorized Valve selection Note that by selecting the positioning valve algorithm the speed of the VPLUS motor is being controlled based on the discharge temperature only The original VPLUS temperature controller had thermocouples that sens...

Page 228: ...ettings page Setup the Motorized Control Valve setting as show in Figure B 47 Setpoint 135 deg F Motorized Valve Control P 25 0 I 1 0 D 4 0 Minimum Valve Open Percent De selected Avg with Oil Manifold Temperature De selected Oil Separator Temp Override 100 deg F Depending upon the size of the oil separator the P term may have to be adjusted to give proper response of the 4 20ma signal to the Dart ...

Page 229: ...uxiliary 6 INT 0 OFF 1 ON Read 14 N50 14 40015 Auxiliary 7 INT 0 OFF 1 ON Read 15 N50 15 40016 Auxiliary 8 INT 0 OFF 1 ON Read Digital Outputs 16 N51 0 40051 Compressor Start INT 0 OFF 1 ON Read Table B 4 Vission 20 20 Communication Table Vission 20 20 Communication Table All ENUM variables are of INT type ALL F INT data types represent floating point values as INT types multiplied by 10 All Press...

Page 230: ... 1 ON Read 32 N51 16 40067 Condenser Step 1 INT 0 OFF 1 ON Read 33 N51 17 40068 Condenser Step 2 INT 0 OFF 1 ON Read 34 N51 18 40069 Condenser Step 3 INT 0 OFF 1 ON Read 35 N51 19 40070 Condenser Step 4 INT 0 OFF 1 ON Read 36 N51 20 40071 Auxiliary Output 1 INT 0 OFF 1 ON Read 37 N51 21 40072 Auxiliary Output 2 INT 0 OFF 1 ON Read 38 N51 22 40073 Auxiliary Output 3 INT 0 OFF 1 ON Read 39 N51 23 40...

Page 231: ...1 F INT Read 67 N52 27 40127 Auxiliary 12 F INT Read 68 N52 28 40128 Auxiliary 13 F INT Read 69 N52 29 40129 Auxiliary 14 F INT Read 70 N52 30 40130 Auxiliary 15 F INT Read 71 N52 31 40131 Auxiliary 16 F INT Read Analog Outputs 72 N53 0 40200 Compressor VFD mA F INT Read 73 N53 1 40201 Condenser VFD F INT Read 74 N53 2 40202 Slide Valve Output F INT Read 75 N53 3 40203 Liquid Injection Motorized V...

Page 232: ... N55 0 40400 Anti Recycle Time Minutes INT Read 90 N55 1 40401 Compressor Status ENUM 0 Stop 1 Stop Remote Ready 2 Running 3 Starting 4 Waiting Read 91 N55 2 40402 Alarm Status Word 1 WORD Read See Notes 92 N55 3 40403 Alarm Status Word 2 WORD Read See Notes 93 N55 4 40404 Alarm Status Word 3 WORD Currently Unused Read See Notes 94 N55 5 40405 Alarm Status Word 4 WORD Currently Unused Read See Not...

Page 233: ...Unload 7 Remote Capacity Hold 8 Remote Ready Idle 9 Direct I O Auto Capacity 10 Direct I O Manual Capacity Read 100 N55 11 40411 Load Limiting Condition WORD Bit 0 High Motor Amps Bit 1 High Discharge Pressure Bit 2 Low Suction Pressure Bit 3 High Discharge Superheat Read 101 N55 12 40412 Oil Pump Status INT 0 OFF 1 ON Read 102 N55 13 40413 Oil Pump Operation ENUM 0 None 1 Cycling 2 Full Time 3 Co...

Page 234: ...2 16 R771 17 R1270 Propylene 18 Natural Gas 19 Other Read 105 N55 16 40416 Runtime Hours x1000 INT Read 106 N55 17 40417 Runtime Hours 1 999 INT Read 107 N55 18 40418 Remote Lock Mode INT 0 OFF 1 ON Read Commands 108 N56 0 40500 Alarm Reset INT 1 Perform Reset Read Write 109 N56 1 40501 Active Remote Control ENUM 0 None Local 1 Direct I O 2 Serial 3 Ethernet Read Write 110 N56 2 40502 Remote Capac...

Page 235: ...lse 20 2 Second Pulse 145 14 5 Second Pulse 150 15 Second Pulse Read Write 113 N56 5 40505 Remote Pulse Unload F INT 0 Stop Pulse 10 1 Second Pulse 15 1 5 Second Pulse 20 2 Second Pulse 145 14 5 Second Pulse 150 15 Second Pulse Read Write 114 N56 6 40506 Capacity Hold INT 0 100 Read Write 115 N56 7 40507 Active Setpoint ENUM 1 Setpoint 1 2 Setpoint 2 if enabled Read Write 116 N56 8 40508 Start Com...

Page 236: ...57 5 40555 Setpoint 2 Pressure Temp F INT Read Write 15 0 100 0 200 0 150 0 128 N57 6 40556 Cap Inc Time Interval Setpoint 2 F INT Read Write 0 5 5 5 129 N57 7 40557 Cap Inc Proportional Band Setpoint 2 F INT Read Write 0 5 20 0 130 N57 8 40558 Cap Dec Time Interval Setpoint 2 F INT Read Write 0 5 5 5 131 N57 9 40559 Cap Dec Proportional Band Setpoint 2 F INT Read Write 0 5 20 0 132 N57 10 40560 C...

Page 237: ...ite 15 0 100 0 200 0 150 0 148 N58 8 40578 Stop Delay Time Setpoint 2 INT Read Write 0 300 149 N58 9 40579 Minimum Slide Position Setpoint 2 INT Read Write 0 100 Pumpdown 150 N59 0 40590 Stop Pressure Setpoint 1 F INT Read Write 15 0 200 0 151 N59 1 40591 Stop Delay Time Setpoint 1 seconds INT Read Write 0 60 152 N59 2 40592 Minimum Slide Position Setpoint 1 INT Read Write 0 50 153 N59 3 40593 Sto...

Page 238: ...igh Disch Press Stop Load Setpoint 2 F INT Read 171 N61 9 40619 High Disch Press Force Unload Setpoint 2 F INT Read 172 N61 10 40620 Low Suct Press Stop Load Setpoint 2 F INT Read 173 N61 11 40621 Low Suct Press Force Unload Setpoint 2 F INT Read 174 N61 12 40622 Liquid Inj Solenoid 1 Temp F INT Read 175 N61 13 40623 Liquid Inj Solenoid 2 Temp F INT Read 176 N61 14 40624 Liquid Inj Open F INT Read...

Page 239: ... 194 N62 7 40647 Volume Slide Adjustment INT Read 195 N62 8 40648 Soft Load INT Read 196 N62 9 40649 Capacity Range Min F INT Read 197 N62 10 40650 Capacity Range Max F INT Read 198 N62 11 40651 Rate Deadband F INT Read 199 N62 12 40652 Enable Load Anticipating Algorithm INT 0 Disabled 1 Enabled Read Compressor VFD 200 N70 0 40670 VFD Gain P INT Read 201 N70 1 40671 VFD Reset I INT Read 202 N70 2 ...

Page 240: ...ad 223 N71 11 40711 Max SP F INT Read 224 N71 12 40712 Start Level INT Read 225 N71 13 40713 Leakage INT Read 226 N71 14 40714 Overfill Leakage INT Read Alarms Trips Page 1 227 N63 0 40750 Low Suction Press Alarm Setpoint 1 F INT Read Write 15 0 300 0 228 N63 1 40751 Low Suction Press Trip Setpoint 1 F INT Read Write 15 0 300 0 229 N63 2 40752 High Disch Press Alarm Setpoint 1 F INT Read 230 N63 3...

Page 241: ...6 Low Oil Sep Run Temp Alarm F INT Read 248 N64 7 40807 Low Oil Sep Run Temp Trip F INT Read 249 N64 8 40808 Low Oil Inj Temp Alarm F INT Read 250 N64 9 40809 Low Oil Inj Temp Trip F INT Read 251 N64 10 40810 High Oil Inj Temp Alarm F INT Read 252 N64 11 40811 High Oil Inj Temp Trip F INT Read 253 N64 12 40812 High Oil Separator Temp Alarm F INT Read 254 N64 13 40813 High Oil Separator Temp Trip F...

Page 242: ...s Safety Changeover seconds INT Read 274 N66 3 40903 High Filter Diff Safety Changeover seconds INT Read 275 N66 4 40904 Compressor Interlock Bypass seconds INT Read 276 N66 5 40905 Low Oil Sep Temp Safety Changeover minutes INT Read 277 N66 6 40906 Low Oil Injection Safety Changeover minutes INT Read 278 N66 7 40907 High Motor Amps Safety Changeover seconds INT Read 279 N66 8 40908 Max Restart Ti...

Page 243: ...vent 1 Hour INT Read Write See Notes 0 23 291 N67 2 41002 Sunday Event 1 Minute INT Read Write See Notes 0 59 292 N67 3 41003 Sunday Event 2 Control Mode ENUM Read Write See Notes 0 6 293 N67 4 41004 Sunday Event 2 Hour INT Read Write See Notes 0 23 294 N67 5 41005 Sunday Event 2 Minute INT Read Write See Notes 0 59 295 N67 6 41006 Sunday Event 3 Control Mode ENUM Read Write See Notes 0 6 296 N67 ...

Page 244: ...ite See Notes 0 23 303 N67 14 41014 Monday Event 1 Minute INT Read Write See Notes 0 59 304 N67 15 41015 Monday Event 2 Control Mode ENUM Read Write See Notes 0 6 305 N67 16 41016 Monday Event 2 Hour INT Read Write See Notes 0 23 306 N67 17 41017 Monday Event 2 Minute INT Read Write See Notes 0 59 307 N67 18 41018 Monday Event 3 Control Mode ENUM Read Write See Notes 0 6 308 N67 19 41019 Monday Ev...

Page 245: ... See Notes 0 23 315 N67 26 41026 Tuesday Event 1 Minute INT Read Write See Notes 0 59 316 N67 27 41027 Tuesday Event 2 Control Mode ENUM Read Write See Notes 0 6 317 N67 28 41028 Tuesday Event 2 Hour INT Read Write See Notes 0 23 318 N67 29 41029 Tuesday Event 2 Minute INT Read Write See Notes 0 59 319 N67 30 41030 Tuesday Event 3 Control Mode ENUM Read Write See Notes 0 6 320 N67 31 41031 Tuesday...

Page 246: ...Notes 0 23 327 N67 38 41038 Wednesday Event 1 Minute INT Read Write See Notes 0 59 328 N67 39 41039 Wednesday Event 2 Control Mode ENUM Read Write See Notes 0 6 329 N67 40 41040 Wednesday Event 2 Hour INT Read Write See Notes 0 23 330 N67 41 41041 Wednesday Event 2 Minute INT Read Write See Notes 0 59 331 N67 42 41042 Wednesday Event 3 Control Mode ENUM Read Write See Notes 0 6 332 N67 43 41043 We...

Page 247: ... See Notes 0 23 339 N67 50 41050 Thursday Event 1 Minute INT Read Write See Notes 0 59 340 N67 51 41051 Thursday Event 2 Control Mode ENUM Read Write See Notes 0 6 341 N67 52 41052 Thursday Event 2 Hour INT Read Write See Notes 0 23 342 N67 53 41053 Thursday Event 2 Minute INT Read Write See Notes 0 59 343 N67 54 41054 Thursday Event 3 Control Mode ENUM Read Write See Notes 0 6 344 N67 55 41055 Th...

Page 248: ...Write See Notes 0 23 351 N67 62 41062 Friday Event 1 Minute INT Read Write See Notes 0 59 352 N67 63 41063 Friday Event 2 Control Mode ENUM Read Write See Notes 0 6 353 N67 64 41064 Friday Event 2 Hour INT Read Write See Notes 0 23 354 N67 65 41065 Friday Event 2 Minute INT Read Write See Notes 0 59 355 N67 66 41066 Friday Event 3 Control Mode ENUM Read Write See Notes 0 6 356 N67 67 41067 Friday ...

Page 249: ...e Notes 0 23 363 N67 74 41074 Saturday Event 1 Minute INT Read Write See Notes 0 59 364 N67 75 41075 Saturday Event 2 Control Mode ENUM Read Write See Notes 0 6 365 N67 76 41076 Saturday Event 2 Hour INT Read Write See Notes 0 23 366 N67 77 41077 Saturday Event 2 Minute INT Read Write See Notes 0 59 367 N67 78 41078 Saturday Event 3 Control Mode ENUM Read Write See Notes 0 6 368 N67 79 41079 Satur...

Page 250: ...100 0 377 N68 3 41103 Unload Rate 1 offset Pressure Temp F INT Read Write 0 0 100 0 378 N68 4 41104 Unload Rate 2 offset Pressure Temp F INT Read Write 0 0 100 0 379 N68 5 41105 Load Rate 1 Timer Pressure Temp seconds INT Read Write 0 10000 380 N68 6 41106 Load Rate 2 Timer Pressure Temp seconds INT Read Write 0 10000 381 N68 7 41107 Unload Rate 1 Timer Pressure Temp seconds INT Read Write 0 10000...

Page 251: ...tep 4 Enabled Summer Winter INT 0 Disabled 1 Enabled Read Write 399 N69 14 41184 Step 5 Enabled Summer Winter INT 0 Disabled 1 Enabled Read Write 400 N69 15 41185 Step 1 Out 1 Enabled Summer Winter INT 0 Disabled 1 Enabled Read Write 401 N69 16 41186 Step 2 Out 1 Enabled Summer Winter INT 0 Disabled 1 Enabled Read Write 402 N69 17 41187 Step 3 Out 1 Enabled Summer Winter INT 0 Disabled 1 Enabled R...

Page 252: ...Summer Winter INT 0 Disabled 1 Enabled Read Write 420 N69 35 41205 Step 1 VFD Enabled Summer Winter INT 0 Disabled 1 Enabled Read Write 421 N69 36 41206 Step 2 VFD Enabled Summer Winter INT 0 Disabled 1 Enabled Read Write 422 N69 37 41207 Step 3 VFD Enabled Summer Winter INT 0 Disabled 1 Enabled Read Write 423 N69 38 41208 Step 4 VFD Enabled Summer Winter INT 0 Disabled 1 Enabled Read Write 424 N6...

Page 253: ...9 51 41221 Condenser VFD Reset I F INT Read Write 0 0 10 0 437 N69 52 41222 Condenser VFD Rate D F INT Read Write 0 0 10 0 438 N69 53 41223 Condenser VFD Minimum Speed INT Read Write 0 20 439 N69 54 41224 Condenser VFD Maximum Speed INT Read Write 80 100 Configuration Time 440 N76 0 41330 Time Hours INT HH Read Write 0 23 441 N76 1 41331 Time Min INT MM Read Write 0 59 442 N76 2 41332 Time Secs IN...

Page 254: ...4 N77 8 41348 Compressor VFD INT 0 No 1 Yes Read 455 N77 9 41349 Compressor Sequencing INT 0 No 1 Yes Read 456 N77 10 41350 Superheat Monitor INT 0 No 1 Yes Read 457 N77 11 41351 Oil Pump Control Type ENUM 0 No Pump 1 Cycling 2 Full Time 3 Cool Compression Read 458 N77 12 41352 Oil Pumps INT Read 459 N77 13 41353 Condenser Control INT 0 No 1 Yes Read 460 N77 14 41354 Ambient Sensor INT 0 No 1 Yes ...

Page 255: ... Unused Bit 6 Low Suction Pressure Alarm Bit 6 Unused Bit 7 High Discharge Pressure Alarm Bit 7 Unused Bit 8 High Process Temp Alarm Bit 8 Unused Bit 9 Low Process Temp Alarm Bit 9 Unused Bit 10 Low Oil Separator Temp Alarm Bit 10 Unused Bit 11 High Oil Injection Temp Alarm Bit 11 Unused Bit 12 High Motor Current Alarm Bit 12 Unused Bit 13 Remote Comm Time out Bit 13 Unused Bit 14 High Superheat R...

Page 256: ...atio Trip Bit 6 Low Suction Temp Inhibit Bit 6 High Oil Injection Temp Trip Bit 6 High Oil Separator Temp Trip Bit 7 High Oil Injection Temp Inhibit Bit 7 High Motor Current Trip Bit 7 Unused Bit 8 Prelube Oil Pump Inhibit Bit 8 Capacity Position Trip Bit 8 Unused Bit 9 Compressor Interlock Inhibit Bit 9 Volume Position Trip Bit 9 Unused Bit 10 High Level Shutdown Trip Bit 10 False Start Bit 10 Un...

Page 257: ......

Page 258: ...35391SC 2 0 7 13 Emerson and Vilter are trademarks of Emerson Electric Co or one of its affiliated companies 2012 Emerson Climate Technologies Inc All rights reserved Printed in the USA ...

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