Issued Mar-06 Troubleshooting | Emerson ROC827 guide

ROC827 Instruction Manual

4.Verify the thermocouples have the correct construction (ungrounded) and are not grounded by other means.

5.Verify you are using the correct thermocouple wire all the way from the thermocouple to the ROC827 with minimal connections.

6.Verify the wiring run is adequately protected from noise.

7.Test the thermocouple reading from the thermocouple to a meter, and then generate a signal into the ROC827 as described previously.

8.Finally, connect a thermocouple of the same type directly to the ROC827. If it reads correctly, the problem is likely to be in the wiring to the field or may be related to a ground loop.

Issued Mar-06

Troubleshooting

6-12

Image 124

Emerson ROC827 instruction manual Issued Mar-06 Troubleshooting

Contents

Flow Computer Division Part Number D301217X012 March Issued Mar-06 Initial issue Mar-06Revision Contents Switched Auxiliary Output AUXSW+ and Auxsw Wiring the DC Power Input ModuleReplacing the Internal Battery K Type Thermocouple Input Modules Troubleshooting Troubleshooting J and K Type Thermocouple Input Modules Issued Mar-06 Scope of Manual Proportional, Integral, and Derivative PID Issued Mar-06 General Information Hardware Power Supply Module Module 1 ROC827 Base Unit without Expanded Backplane ROC827 with One Expanded Backplane Central Processor Unit CPU ƒ Local Operator Interface LOI Local Port EIA-232RS-232D Processor and Memory Real-Time Clock RTC Diagnostic Monitoring OptionsSystem Analog Inputs System AI Function Normal Range Point Number FCC Information Firmware Issued Mar-06 General Information Issued Mar-06 General Information Point vs -Point Addressing Historical Database and Event & Alarm LogSlot Number Logicals 16 pt Logicals 8 pt Meter Runs and Stations Flow Calculations Low Power Modes Automatic Self Tests Proportional, Integral, and Derivative PID Function Sequence Table FST Roclink 800 Configuration Software DS800 Development Suite Software Expanded Backplane Related Specification Sheets Issued Mar-06 Installation and Use Installation RequirementsRemoving the ROC827 from the DIN Rail Environmental Requirements Site Requirements Compliance with Hazardous Area Standards Power Installation Requirements Grounding Installation Requirements Housing 6 I/O Wiring RequirementsRequired Tools Removing and Installing Wire Channel Covers Removing and Replacing End Caps Removing and Installing Module Covers To install a module coverMounting the ROC827 on a DIN Rail To remove a module cover Side View of the ROC827 Securing the ROC827 on the DIN Rail Installing the DIN RailDIN Rail Catch DIN Rail Mount Removing the ROC827 from the DIN Rail ROC800-Series Expanded Backplane EXP Power connector on the EXP Backplane Attaching an Expandable Backplane Removing an Expandable Backplane Locking clips and tabs Central Processor Unit CPU CPU Front View CPU Connector Locations Status LED Color Definitions SolutionStatus LED Functions CPU Number Definitions Removing the CPU Module Installing the CPU ModuleElectronic components, resulting in interrupted operations License Keys License Key Installing a License Key Incorrect Correct Startup and Operation Removing a License KeyTo remove a license key Operation StartupIncorrect polarity can damage the ROC827 1 12-Volt DC Power Input Module PM-12 Power Input Module DescriptionsIssued Mar-06 Power Connections Volt dc Power Input Module 2 24-Volt DC Power Input Module PM-24 Volt dc Power Input Terminal Block ConnectionsVolt DC Power Input LED Fault Indicators Terminal Blocks Definition Volts DC Volt dc Power Input LED Indicators Green LED on when voltage is provided to backplaneGreen LED on when voltage is provided to CPU Auxiliary Output AUX+ and AUX Volt dc Auxiliary Power Wiring Other Equipment Switched Auxiliary Output AUXSW+ and Auxsw Determining Power Consumption Process Issued Mar-06 Power Connections Estimated Power Consumption Tuning the Configuration Power Consumption of the Analog Input Modules Used CycleChannel Channel’s mA current Draw from +T * 1.25 Jumper set for +T @ 24 volts dc Power Consumption of the Analog Output Modules Used Cycle AO Module Base100 mA @ 12 volts dc 1200 mW Channel Channel’s mA current Draw from +T Power Consumption of the Discrete Input Modules Used Cycle DI Module Base Power Consumption of the Discrete Output Modules Used Cycle Do Module 10. Power Consumption of the Discrete Output Relay Modules DOR Module PI Module Channel Per Active LED Maximum 12. Power Consumption of the MVS Modules MVS Module 13. Power Consumption of the RTD Modules 14. Power Consumption of the Thermocouple Modules15. Power Consumption of the Hart Modules Used Cycle RTD Module 65 mA @ 13.25 volts dc Table Total 16. Power Consumption of Other Devices Removing a Power Input ModuleTotal Connecting the ROC827 to Wiring Installing a Power Input ModuleProperty damage Wiring the DC Power Input Module Volts dc Power Supply and BAT+ / BAT- Wiring Wiring the External Batteries Power Supply Terminal BlockSolar Regulator Panel Batteries Amp Fuse Issued Mar-06 Power Connections Replacing the Internal Battery 17. Replacement Battery Types 18. Power Input Module Specification Sheets Name Form Number Part Number Issued Mar-06 Input/Output Modules I/O Module Overview Front View Side View Slot #1 orComm Slot #2 or Installation Installing an I/O Module Removing an I/O Module Earth ground Wiring I/O Modules Analog Input Modules Precision +T 12 / 24 V dc Jumper Resistor Current Loop Device 4-20mA Analog Output Modules +T 12 / 24 V dc Jumper Discrete Input Modules Field WiringRepresentative Internal Circuit Discrete Input Module Field Wiring Discrete Output Modules Representative Internal Circuit Field Wiring With powered devices may cause improper operation or damageDiscrete Output Relay Modules 10. Discrete Output Relay Module Field Wiring Pulse Input Modules 11. Pulse Input J4 Jumper Set to +12 Representative Field Wiring Internal Circuit RTD Input Modules Connecting the RTD Wiring RTD Signal RoutingSignal Terminal Designation CH 1 REF Constant Current + CH 1 + RTD Wiring Wire RTD Red Jumper RedTerminal Wire RTD K Type Thermocouple Input Modules De-calibration 15. Type J and K Thermocouple Wiring Sheathed Wiring United States Color CodingModule to ground Supported I/O Module Specification Sheets Issued Mar-06 Input/Output Modules Issued Mar-06 Communications Communications Ports and Modules OverviewBuilt-in Communications and Optional Communication Modules Communications Built-in on CPU Optional Module Communication LED Indicator Definitions Signals Action Installing Communication Modules Example RS-485 Communications Module Removing a Communications Module Wiring Communications Modules Local Operator Interface LOI Built-in LOI EIA-232 Signal Routing RJ-45 to EIA-232 RS-232 Null-modem Cable Signal RoutingEIA-232 ROC800 RJ-45 Pins RS-232 On ROC800 Series Ground Common Receive Using the LOI Ethernet CommunicationsRed Green Brown Gray Ethernet Signal LEDs Signal Function EIA-232 RS-232 Serial Communications BASE-T Crossover Cable Built-in EIA-232 RS-232 Signal Routing Comm2 Signal LED FunctionLit when Comm2 ready to send is not active Lit when Comm2 data terminal ready is active EIA-422 RS-422 Signal Routing Comm3, Comm4, and Comm5 10. EIA-485 RS-485 Signal Routing Comm3, Comm4, and Comm5Signal RS-422 Function Terminal Signal RS-485 Function Terminal 12. EIA-485 RS-485 Module Dial-up Modem Communications ModuleJumper Terminated Not Terminated TER Out Half Full 14. Modem Signal Routing Comm3, Comm4, and Comm5 Signal Pin13. RJ-11 Field Connections Tip Ring 15. MVS Termination Multi-Variable Sensor MVS Interface ModulesTerminated Not Terminated Jumper 16. MVS Signal Routing Comm3, Comm4, and Comm5 MVS Jumper J4 Shown Not Terminated Hart Interface Module Issued Mar-06 Communications Hart Interface Module Field Wiring Hart Channels 1 and 3 back side of board CH2 I/O Switch CH4 I/O Switch Hart Channels 2 and 4 front side of board 17. Related Documentation D301213X012 Issued Mar-06 Troubleshooting Troubleshooting J & K Type Thermocouple Input ModulesGuidelines Serial Communications Checklists2 I/O Point Software Powering UpMVS Module Preserving Configuration and Log Data ProceduresRestarting the ROC827 Troubleshooting Analog Input Modules Analog Input Module Typical Configuration ValuesSelect File Download Damage Select Configuration I/O AI Points Value = Vmultimeter 1 ⎟ 4 * Span + Low Reading EU Troubleshooting Analog Output Modules Troubleshooting Discrete Input ModulesSelect Configuration I/O AO Points Select Scanning Enabled and click Apply Troubleshooting Discrete Output Relay Modules Troubleshooting Discrete Output ModulesSelect Configuration I/O DI Points Troubleshooting Pulse Input Modules Troubleshooting RTD Input ModulesSelect Configuration I/O PI Points Equipment Required Troubleshooting J and K Type Thermocouple Input Modules Select Configuration I/O RTD Point To test the thermocouple module To test the thermocouple Issued Mar-06 Troubleshooting Calibration Issued Mar-06 CalibrationPreparing for Calibration Issued Mar-06 Calibration Analog AreaAttribute Built-in I/O Configuration Comm ModuleTree Crosstalk EIA-232 EIA-422RS-422 EIA-485 Firmware Highway Addressable Remote Transducer InputInput Register Local Port Manual mode MAC AddressModbus Msec Preset PointPoint Type Protocol RX or RXD ScriptSoft Points System Issued Mar-06 Glossary Battery +12 V dc AlarmingDiagnostic Issued Mar-06 Index Dc Power Supply and BAT+ / BAT Wiring Dc Power Supply and CHG+ and CHGFunction Sequence Table FST Issued Mar-06 Index Discrete Output Relay Installing FuseEIA-422/485 RS-422/485 Communications Local Operator Interface Power Input modules Public Switched Telephone NetworksSetup Specifications MVS Signal Routing Comm3, Comm4 Analog Input Module Typical ConfigurationUsing Wiring Emerson Process Management Flow Computer Division