UTC Fire and Security Det-Tronics R8471B, Instructions Manual

Page 1: ...Instructions 95 8401 H2S Controller R8471B 2 1 8 07 95 8401 ...

Page 2: ...TALLATION CHECKLIST 16 Section III System Startup STARTUP PROCEDURE 16 SETPOINT ADJUSTMENT 17 Setpoint Display Mode 17 Setpoint Adjustment Procedure 17 CALIBRATION 18 Calibration Procedure 18 Current Output Calibration 20 Section IV System Maintenance ROUTINE MAINTENANCE 20 Manual Check of Output Devices 20 Checkout in Normal Mode 20 Hydrophobic Filter 20 Sensing Element Replacement 21 TROUBLESHOO...

Page 3: ... controller is easily field pro grammable Base model is furnished with solid state alarm and fault outputs Premium model is furnished with relay outputs and a 4 to 20 ma dc output Current output is selectable for isolated non isolated operation Rack compatible with Det Tronics R7400 series flame controllers Variety of racks available in 4U or 3U height configu ration APPLICATION INFORMATION Hydrog...

Page 4: ... volts dc maximum RELAY CONTACTS Premium model only Selectable normally open normally closed contacts rated 5 amperes at 30 vdc 250 vac CURRENT OUTPUT Premium model only 4 to 20 milliamperes dc current with a maximum external loop resistance of 600 ohms at 20 to 32 vdc DIMENSIONS See Figure 1 SHIPPING WEIGHT approximate 2 0 pounds 0 9 kilogram SYSTEM APPROVAL The R8471B Controller base and premium...

Page 5: ...sically safe is CSA certified and FM approved for Class I Division 1 Groups A B C and D DIMENSIONS See Figure 2 for dimensions of the C7064E Sensor and Figure 3 for dimensions of the junction box SHIPPING WEIGHT Approximate 2 5 pounds 1 1 kilograms SYSTEM OPERATION SENSOR The C7064C intrinsically safe and C7064E explosion proof H2S Sensors use an electrochemical sensing element to detect the prese...

Page 6: ...r special transmitter features such as relay contacts or visible annunciators a variety of Det Tronics transmitters are available for use with either electrochemical or solid state H2S sensors Refer to the Ordering Information section of this manual for more information CONTROLLER Faceplate Description The controller faceplate provides LEDs for identifying status conditions a digital display and b...

Page 7: ...hecked by pressing the RESET pushbutton located on the front panel of the controller See Setpoint Adjustment and Calibration sections of this manual for additional information Outputs The R8471B Controller is available in a Base version and a Premium version The differences between the two models are the output configuration and programming options BASE MODEL The base controller is furnished with ...

Page 8: ...current output drops to less than 1 ma NOTE The fault code will be shown for about 2 seconds out of every 5 seconds The gas concentration at the sensor will be displayed during the remaining time If more than one fault should occur the highest priority fault will be displayed Table 4 lists the faults in order of priority Table 3 Selectable Relay Options Relay Selectable Selectable Selectable Norma...

Page 9: ...tep by step programming and calibration procedures refer to the corresponding sections in this manual The controller can operate in any of the following modes Operating modes other than Normal are selected by pressing the appropriate pushbutton s located on the controller front panel See Figure 5 NORMAL In the Normal operating mode with no alarm condition Digital display is on and indicates the se...

Page 10: ...SPLAY MODE If the RESET button is held for approximately one second the controller enters the Setpoint Display mode In this mode the digital display sequentially shows the programmed alarm setpoints and calibration gas concentration Each value is displayed for approximately 2 seconds After completing the sequence the controller automatically returns to the Normal operating mode if the RESET button...

Page 11: ...shes Finally the current output level during calibration is generated while the CAL LED flashes The microprocessor automatically returns to the normal operating mode at the end of the sequence Adjustments to the current output level are made by pressing the RESET increase or SET decrease button This procedure requires a dc current meter to monitor the actual controller dc milliampere output Sectio...

Page 12: ...should never be poured in temperatures that are below freezing since the water in the sealing compound will freeze and the compound will not dry properly Contamination problems can then result when temperatures rise above the freezing point and the compound thaws The shielding of the cable should be stripped back to permit the seal to form around the individual leads rather than around the outside...

Page 13: ... installation however do not over tighten NOTE Coat the sensor threads with an appropriate grease to ease installation and also lubricate the junction box cover threads to ensure a water tight enclosure The recommended lubricant is a silicone free polyalphaolefin grease part number 005003 001 available from Detector Electronics 8 Connect the sensor wires to the terminal block marked to sensor See ...

Page 14: ... R8471B H2S Controller Terminals 1 and 2 4 to 20 ma dc output Non Isolated Current Output If the 4 to 20 ma current loop is to be non isolated wire the current loop as shown in Figure 12 Note that terminal 2 is not used with a non isolated current loop Program the controller for a non isolated current loop as described in the Controller Programming section of this manual Isolated Current Output If...

Page 15: ...IN THE TOP BRACKET IN LINE WITH THE CLIP IN THE BOTTOM BRACKET 3 GAS CONTROLLERS ARE APPROX ONE INCH WIDE AND REQUIRE ONE RAIL FOR INSERTION PLACE CLIPS IN LINE WITH GUIDE RAILS CAGES WILL ACCEPT AS MANY GAS CONTROLLERS AS RAILS PROVIDED CONTROLLER POSITIONS FOR HT DIM A DIM B DIM C DIM D DIM E FIRE GAS INCH MM INCH MM INCH MM INCH MM INCH MM 8 16 4U 19 00 482 6 18 30 464 8 17 36 440 9 4 00 101 6 ...

Page 16: ...Low Alarm Output Terminals 15 and 16 Fault Output Figure 12 A Typical System R8471B with Relay Outputs Non Isolated Current Output and C7064E Sensor CURRENT OUTPUT CHASSIS GROUND POWER SENSOR EXTERNAL RESET HIGH ALARM HIGH ALARM OC AUX ALARM AUX ALARM OC LOW ALARM LOW ALARM OC FAULT FAULT OC 1 3 4 5 6 7 8 9 10 11 12 13 14 15 16 18 TO 32 VDC POWER SIGNAL 2 OC OPEN COLLECTOR OUTPUT BASE MODEL ONLY B...

Page 17: ...lly Open or Normally Closed refers to the condition of the relay contacts when Normally de energized operation is selected Refer to the setting of SW1 2 below If the relays are Normally Energized the condition of the relay contacts will be reversed Latching Non Latching Relays The Low and Auxiliary alarm relays are programmable for latching or non latching operation The High alarm relay is always ...

Page 18: ...ack 10 Proper ventilation is provided to prevent over heating of the controller Proceed to System Startup Setpoint Adjustment and Calibration Section III System Startup STARTUP PROCEDURE 1 Output loads that are normally actuated by the system should be secured remove power from all output devices to prevent undesired activation 2 Check all external wiring for proper connection Be sure that the sen...

Page 19: ... mode without affecting the calibration settings 2 At the end of the two second interval the Low LED goes out the High LED begins to blink and the digital display shows the high alarm setpoint 3 Two seconds later the High LED goes out and the Auxiliary LED blinks The digital display now shows the programmed auxiliary alarm setpoint 4 Two seconds later the Auxiliary LED goes out and the CAL LED bli...

Page 20: ...tion the H2S detection system must be calibrated on a regularly scheduled basis Loss of sensitivity can be caused by various fac tors One common cause is by clogging of the hydrophobic filter by dirt oil paint etc Problems of this nature will not be detected by the system s diagnostic circuitry While performing detec tor calibration the operator should examine the hydrophobic filter of the sensor ...

Page 21: ...The FAULT LED comes on and the digital display stops flashing The con troller is now set for the factory default values 3 To exit the Sensor Replacement mode press the RESET button The controller returns to the nor mal operating mode after a time delay The above procedure does not need to be performed with each recalibration unless a controller calibration described below is performed For informat...

Page 22: ...button to obtain the desired current output level for the calibrate mode The default level is 4 0 ma 6 When no changes have been made for 7 sec onds the system automatically returns to the Normal operating mode and saves the data in non volatile memory 7 Remove the meter from the system output and reconnect the outputs for normal operating condi tions Section IV System Maintenance ROUTINE MAINTENA...

Page 23: ...y return to the Normal mode when power is restored after a time delay To prevent the possibility of alarms allow the system to warm up in the sensor replacement mode The sensor replacement mode can be entered during the power up time delay by holding the RESET button for 7 seconds If performing a transmitter calibration leaving the controller in the Sensor Replacement mode until after the calibrat...

Page 24: ...failure FAULT LED on 1 Power up time delay up to 5 minutes digital display blank 2 If condition continues after 5 minutes repeat power up If problem continues replace controller F91 to F98 Status 1 Initialization failure Repeat power up If successful re program and re calibrate If not replace controller F92 Status 1 Sensor failure during startup Current is over 35 ma or below 2 ma F94 Status 1 RAM...

Page 25: ...re used with gas controllers only 4U racks can house gas or flame controllers in any combina tion See Figures 9 and 10 Rack sizes are available to handle up to 8 flame controllers or up to 16 gas controllers SENSOR C7064C Sensor Housing C7064E Sensor Housing Electrochemical Sensing Element Sensor Junction Box ACCESSORIES Silicone Free Grease Open Frame Power Supply 3 6 amperes at 24 vdc Open Frame...

Page 26: ...95 8401 24 2 1 Recommended Test Form Detector Detector Date Date Date Number Location Installed Checked Calibrated Remarks ...

Page 27: ...95 8401 25 2 1 Fault Record Sheet Date Time Detector System Status Operator Comments Affected ...

Page 28: ...95 8401 26 2 1 ...

Page 29: ... IR Combustible Gas Detector Eagle Quantum Premier Safety System Eagle Logic Solver Safety System Det Tronics the DET TRONICS logo Eagle Quantum Premier and Eclipse are registered trademarks or trademarks of Detector Electronics Corporation in the United States other countries or both Other company product or service names may be trademarks or service marks of others Copyright Detector Electronics...