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Ramsey Oretronic IV Tramp Metal Detector REC 4479C 

Page 45 

 

Covers over the electronics and rotating parts must always remain in place during normal 
operation. Remove only for maintenance, with the 

machine’s power OFF. Replace all covers 

before resuming operation. 

 

During maintenance, a safety tag (not supplied by the factory) must be displayed in the ON/OFF 
switch areas instructing others not to operate the unit (ANSI:B157.1). 

False Tripping

 

False tripping means that something other than the metal the TMD IV is set up to detect is causing it to trip.  
The most common problem is a sensitivity setting that is too high for the amount of background noise present.  
This makes it difficult for the TMD IV to distinguish between the signal produced by tramp metal and the 
background signal.  Another common problem is coil imbalance, which can cause the receiver coil to generate 
output signals when there is no tramp metal passing. 
 
If your TMD IV is false tripping, use the procedures in this section to help determine the cause.  The procedures 
are written for a user familiar with the operator interface.  The Operating the TMD IV section of this manual 
describes the operator interface in detail. 

Correct the Coil Imbalance

 

Coil imbalance can result from the transmitter and receiving coils not being aligned well.  It can also result 
from different amounts of metal in the conveyor structure on each side of the coils. 
 
Use this procedure to balance the coils.  Always perform this procedure first, before trying to determine any 
other cause of false tripping. 
 

WARNING.

  Keep hands and clothing away from all moving or rotating parts. 

 

1.

 

Stop the conveyor belt 

2.

 

Clear the burden off the belt for four feet on each side of the coil structure 
Also, check the immediate area around the support structure and on the coils and remove any loose 
metal objects. 

3.

 

Go to the Settings menu from the Run screen. 
 

 

Figure 4-1.  Selecting the Material Code 

 

Summary of Contents for Ramsey Oretronic IV

Page 1: ...Thermo Fisher Scientific Ramsey Oretronic IV Tramp Metal Detector User Manual Thermo Scientific Ramsey Oretronic IV Tramp Metal Detector...

Page 2: ...entific also may seek to protect this work as an unpublished copyright In the event of either inadvertent or deliberate publication Thermo Fisher Scientific intends to enforce its rights to this work...

Page 3: ...nual 10 Introduction 11 Overview 11 Theory of Operation 11 System Components 13 Support Structure Coils 14 Control Unit 15 Features and Options 16 Simplified Operator Interface 16 Increased Detection...

Page 4: ...ructure Coils for Dual Coil TMD IV 22 Installing Coil Support Structure Coils for Under Belt Single Coil TMD IV 22 Installing System Devices 23 Mounting the Control Unit 23 Field Wiring the TMD IV 26...

Page 5: ...nput 38 Bar Rod Detect 38 Clip Detect 38 Speed Sensor 38 External Comms 38 Language 38 Units 38 Line Frequency 38 Password Protection 39 Settings Menu 39 Belt Speed 40 Material Code 40 Operating Frequ...

Page 6: ...ing for High Product Noise Mineral Ores 49 Adjusting for Clip Belt Splice Detection 50 Passing Tramp Undetected 51 Changing Material Code to Adjust Sensitivity 52 Testing for Coil or Junction Box Dama...

Page 7: ...nsitivity 61 Clip Length 61 Clip Coarse Sensitivity Delta 61 Clip Coarse Sensitivity 62 Alarm Status Bit String 62 Belt Direction Reversed 62 Clip Detection Enabled 63 Bar Rod Detection Enabled 63 Bar...

Page 8: ...Ramsey Oretronic IV Tramp Metal Detector REC 4479C Page 8 Contacting Thermo Fisher Scientific 68 Appendix A Engineering Drawings 69...

Page 9: ...this manual and the distinction between the two is as follows CAUTION Failure to observe may cause minor injury or damage to the equipment WARNING Failure to observe could result in death or serious...

Page 10: ...les There are voltages in excess of 115 230 V in these areas even with the main door open WARNING Use only the procedures and new parts specifically referenced in this manual to ensure specification p...

Page 11: ...ns and tools The bulk material or burden can be product such as iron pellets minerals aggregates coal or coke The TMD IV can be installed on conveyors with speeds up to 1 800 ft min 9 m s In addition...

Page 12: ...ty Effects Decay Time Coal aggregate and mineral ores have conductivity characteristics considerably poorer than tramp metal which means their magnetic field decays more quickly see Figure 1 3 Figure...

Page 13: ...1 5 Figure 1 5 Signal Sensitivity Measurement Timing Adjustment System Components The TMD IV comes in two configurations a dual coil system and an under the belt single coil system The dual coil TMD...

Page 14: ...igure 1 6 TMD IV System Components Dual Coil Figure 1 7 TMD IV System Components Under Belt Single Coil Support Structure Coils The coils or coil are mounted on a rugged support structure made of non...

Page 15: ...the transmitter coil accepts receiver coil signals and annunciates the presence of tramp metal The circuitry is housed in a NEMA 4X IP66 P N 147797 fiberglass enclosure or a NEMA 4 IP66 P N 147800 pa...

Page 16: ...n sensitivity the TMD IV can detect similar sized tramp at higher belt speeds than its predecessor or smaller tramp at the same belt speed Field Upgradeable Software System updates can be installed by...

Page 17: ...e of impact the display will show hi pile indicating that the coils may no longer be balanced If the transmitter coil does not swing back into position in four seconds the alarm relays of the control...

Page 18: ...e Degrees 30 C to 70 C 22 F to 158 F Enclosure rating IP NEMA NEMA 4X IP66 Fiberglass encl P N 147797 NEMA 4 IP66 Painted Steel encl P N 147800 Humidity 10 to 95 non condensing Altitude Max altitude m...

Page 19: ...cing procedures could result in death or serious injury Make sure only qualified personnel perform installation and maintenance procedures in accordance with the instructions in this manual Allow only...

Page 20: ...s 98 253 VAC for the TMD IV Controller 115 VAC or 230 VAC for the 115V and 230V heaters respectively 0 9A for the standard models and 2 8A for the low temperature models Customer Supplied Fusing Requi...

Page 21: ...se stated in the original order Equipment Handling The TMD IV coil support structure and coil s are normally packaged on a wooden skid and may be lifted with a forklift or crane Do not lift the equipm...

Page 22: ...ween the two idlers 6 Idler spacing at the coil location must be greater than 4 ft 1 2 m If for mechanical reasons this spacing is not possible the distance may be reduced by using rubber impact type...

Page 23: ...drawings and Final Assembly drawings show where optional devices are to be placed on your conveyor Mounting the Control Unit The TMD IV control comes in a fiberglass enclosure Figure 2 1 shows the mo...

Page 24: ...Ramsey Oretronic IV Tramp Metal Detector REC 4479C Page 24 Figure 2 1A Control Unit Mounting fiberglass enclosure...

Page 25: ...move the power cover to allow access to the line power terminals 3 Bolt the enclosure to a flat vertical surface using the 2 position mounting feet on the back of the enclosure see Figure 2 1A or 2 1B...

Page 26: ...be routed through different areas of the control unit enclosure see Figure 2 1 Earth ground all enclosures and conduit A ground connection between all conduits is required Stranded rather than solid...

Page 27: ...the board to be moved without having to disconnect wires Connect all alarm and indicator output wiring to the appropriate terminals see Figure 2 2 2 Connect all alarm and indicator output wiring to t...

Page 28: ...r wire Maintain a gap of at least in from low voltage wires Leave enough loose wiring to allow the board to be moved without having to disconnect wires Generally 8 in or 20 cm is sufficient 3 Connect...

Page 29: ...n is enabled a Speed Sensor Calibration screen becomes available in the Calibration menu External Communication The TMD IV can communicate with external devices through a Modbus interface via an RS 48...

Page 30: ...es a speed sensor use this procedure to calibrate it In order to complete this step you will need to have a measured belt speed see previous section 1 Make sure that the speed sensor is enabled in the...

Page 31: ...entering the speed use the Cancel button to clear the edit field and start over To exit the screen without saving press Cancel if it s visible and then press Back Calibrating Sensitivity 1 Set Coarse...

Page 32: ...842 7 62 1500 0 701 3 30 650 0 830 7 87 1550 0 698 3 56 700 0 819 8 13 1600 0 695 3 81 750 0 808 8 38 1650 0 692 4 06 800 0 798 8 64 1700 0 690 4 31 850 0 788 8 89 1750 0 688 4 57 900 0 778 9 14 1800...

Page 33: ...lue by 1 see Figure 2 5 Note that this may allow some tramp to go undetected if it is small enough and is within the vicinity of a clip External Communication With the installation of the optional RS...

Page 34: ...me and Alarm Reset keys Figure 3 1 shows the front panel In addition to operating from the operator interface panel the TMD IV can communicate through the Modbus communications protocol if the optiona...

Page 35: ...r of pieces of tramp detected since the system tripped or while the belt was coasting to a stop if any Pressing the RESET bell key sets the coast counter to zero and resets the display to the normal m...

Page 36: ...reset since the detection This LED will also be on if a fault or error is present It is never on when the NORMAL LED is on The BYPASS LED yellow indicates that the alarm output relay is disabled Alar...

Page 37: ...Options Screen lower section in selection mode To change the currently selected option press the Select soft key this will change the display of the option value rightmost column to white text on a bl...

Page 38: ...option controls the use of an external speed sensor Speed sensor input is used in detection calculations as well as for marker timing and clip desensitization If the speed sensor input is enabled the...

Page 39: ...s can be entered for the system parameters Some of the fields are for numeric entry others are limited to a set of selection When navigating between the settings leftmost soft key will read Select for...

Page 40: ...in Figure 1 5 in order to optimize the detection for different materials The selection range is 1 through 7 Operating Frequency This setting changes the scanning frequency A or B to improve detection...

Page 41: ...n this will be seen as noise by the TMD IV Allowed range is 1 to 50 feet 0 3 to 15 24 meters Modbus Address This setting is only displayed if the External Comm option is enabled Allowable range is 0 t...

Page 42: ...hese screens allow the user to change system options change settings calibrate the TMD IV and perform various service operations In order to select an option use the up and down soft keys to highlight...

Page 43: ...an be wiped clean with a damp cloth and if necessary a mild detergent Never use abrasive cleaners especially on the display windows Keep the enclosure door tightly closed to prevent dirt infiltration...

Page 44: ...e belt running loaded You should observe the TMD IV for a day or two before changing the device setup or calibration settings There are two basic types of problems you could be having with the TMD IV...

Page 45: ...generate output signals when there is no tramp metal passing If your TMD IV is false tripping use the procedures in this section to help determine the cause The procedures are written for a user fami...

Page 46: ...of the center the triangular markers The bars may be going off and changing sides but if five or more bars are dark you will need to manually balance the coils Figure 4 3 Checking coil balance 7 Adjus...

Page 47: ...This is because the sensitivity is set higher 10 Repeat Steps 7 and 8 increasing the coarse sensitivity value each time 11 When you are satisfied with the coil balance navigate to the Coarse Sensitivi...

Page 48: ...t vibrate There should be no conveyor idlers or other moving conveyor parts in the area of the coils The minimum distances for moving components are given in the system installation drawings There sho...

Page 49: ...rs has decreased this is a better operating frequency for the TMD IV If the number of bars has not decreased set the operating frequency back to the original value and continue on Adjusting for High P...

Page 50: ...existing system conditions 6 Navigate back to the Settings screen and set the Material Code back to 3 You may want to try the procedure from section Finding the Source of Mechanical or Electrical Noi...

Page 51: ...rips stop occurring If the clip delay is too short the TMD IV will return to normal sensitivity before the clip has passed through the detection volume and a false detection will occur In the Settings...

Page 52: ...nce 7 Navigate to Coarse Sensitivity screen in the Calibration menu and enter the value recorded in Step 4 8 Navigate to the Fine Sensitivity screen in the Calibration menu and enter the value recorde...

Page 53: ...resistance is approximately 2 3 ohms the transmitter coil wires the transmitter coil its wiring and its portion of the CPU board are working correctly 5 If the Ohmmeter does not show 2 3 ohms on the...

Page 54: ...ice menu TMD IV Modbus Interface This section provides information about the Modbus protocol implemented for communication between the TMD IV and an intelligent host or PLC It deals only with the prot...

Page 55: ...s Get Set Yes Holding 881 Password Protection Enabled Get Set Yes Holding 897 Password Get Set Yes Holding 977 Normal Fine Sensitivity Get Set Yes Holding 993 Marker Distance Get Set Yes Holding 1009...

Page 56: ...manner The typical procedure for updating the TMD IV parameters is to write to one or more settings register and then invoke the Update Config service 2 Set Defaults Restore all parameters to their fa...

Page 57: ...nt No This register contains an integer code value giving the result of the last service invocation The encoding is given in the table below Value Meaning 0 Service Succeeded 1 Service Pending 2 Inval...

Page 58: ...ulse rate may eliminate this interference The exact pulse rate used depends on the power line frequency as specified by the table below The correct power line frequency must be specified using the Pow...

Page 59: ...hold is 1000 F where F is the value of this parameter It has units of signal counts Marker Distance Base Address H993 Type FLOAT32 Access Get Set Length N A Persistent Yes Min 1 5 Units Meters Max 100...

Page 60: ...ress H1281 Type UINT16 Access Get Set Length 1 Persistent Yes Min 0 Units N A Max 9999 A count of the total number of times tramp metal was detected during the life time of the detector This value wil...

Page 61: ...e in belt regions marked by a repair clip Clip Length Base Address H1425 Type FLOAT Access Get Set Length N A Persistent Yes Min 0 3 Units Meters Max 9 144 Default 0 3 This parameter specifies the len...

Page 62: ...vity value to be used in clip regions is specified by this register Alarm Status Bit String Base Address H1505 Type UNT16 Access Get Only Length N A Persistent No Min 0 Max 65535 This is a status vari...

Page 63: ...ion Enabled Base Address H1617 Type UINT16 Access Get Set Length N A Persistent Yes Min 0 Max 1 This parameter is a flag which turns the Bar Rod detection feature on and off Bar Rod Length Base Addres...

Page 64: ...the built in USB to serial converter Modbus Baud Rate Base Address H1681 Type UINT16 Access Get Set Length 1 Persistent Yes Min 0 Units N A Max 5 This parameter specifies the baud rate to be used wit...

Page 65: ...verter Sync Input Enabled Base Address H1729 Type BOOL Access Get Set Length N A Persistent Yes Min N A Units N A Max N A A boolean flag related to the external sync feature This feature allows two de...

Page 66: ...can be returned to the plant with the Return Material Authorization RMA form Contact our Repair and Returns department at 800 445 3503 to get an RMA form and number Note Have your machine model numbe...

Page 67: ...rawings provide part numbers and descriptions Contact your local office for a list of spare parts Disposal of Hazardous Waste All soldered printed circuit boards must be disposed of in accordance with...

Page 68: ...thermofisher com China 86 8008105118 sales bulk us thermofisher com Germany 49 0 208 824930 49 0 208 852310 fax sales oberhausen thermofisher com India 91 22 4157 8800 91 22 4157 8801 fax Italy 39 02...

Page 69: ...ting and Assembly Coil Stand D07328C A003 Outline Mounting Dimensions Clip Detector C07328C B003 Outline Mounting Dimensions Flag Drop Marker B07328C B004 Outline Mounting Dimensions Spray Marker D073...

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