Compliance with Hazardous Area Standards | Emerson ROC827 specification

ROC827 Instruction Manual

Choose a location for the ROC827 away from heavy traffic areas to reduce the risk of being damaged by vehicles. However, provide adequate vehicle access to aid monitoring and maintenance.

The site must comply with class limits of Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) The device may not cause harmful interference, and (2) the device must accept any interference received, including interference that may cause undesired operation.

2.1.3Compliance with Hazardous Area Standards

The ROC hazardous location approval is for Class I, Division 2, Groups

A, B, C, and D. The Class, Division, and Group terms include:

Class defines the general nature of the hazardous material in the surrounding atmosphere. Class I is for locations where flammable gases or vapors may be present in the air in quantities sufficient to produce explosive or ignitable mixtures.

Division defines the probability of hazardous material being present in an ignitable concentration in the surrounding atmosphere. Division 2 locations are locations that are presumed to be hazardous only in an abnormal situation.

Group defines the hazardous material in the surrounding atmosphere. Groups A to D are:

o Group A: Atmosphere containing acetylene.

o Group B: Atmosphere containing hydrogen, gases, or vapors of equivalent nature.

o Group C: Atmosphere containing ethylene, gases, or vapors of equivalent nature.

oGroup D: Atmosphere containing propane, gases, or vapors of equivalent nature.

For the ROC827 to be approved for hazardous locations, it must be installed in accordance with the National Electrical Code (NEC) guidelines or other applicable codes.

Caution	When working on units located in a hazardous area (where explosive
Caution	gases may be present), make sure the area is in a non-hazardous state
	before performing procedures. Performing these procedures in a
	hazardous area could result in personal injury or property damage.

Issued Mar-06

Installation and Use

2-3

Image 27

Emerson ROC827 instruction manual Compliance with Hazardous Area Standards

Contents

Part Number D301217X012 March Flow Computer Division Initial issue Mar-06 Issued Mar-06Revision Contents K Type Thermocouple Input Modules Switched Auxiliary Output AUXSW+ and AuxswWiring the DC Power Input Module Replacing the Internal Battery Troubleshooting J and K Type Thermocouple Input Modules Troubleshooting Issued Mar-06 Proportional, Integral, and Derivative PID Scope of Manual Hardware Issued Mar-06 General Information ROC827 Base Unit without Expanded Backplane Power Supply Module Module 1 ROC827 with One Expanded Backplane ƒ Local Operator Interface LOI Local Port EIA-232RS-232D Central Processor Unit CPU Real-Time Clock RTC Processor and Memory System AI Function Normal Range Point Number Diagnostic MonitoringOptions System Analog Inputs Firmware FCC Information Issued Mar-06 General Information Issued Mar-06 General Information Historical Database and Event & Alarm Log Point vs -Point AddressingSlot Number Logicals 16 pt Logicals 8 pt Flow Calculations Meter Runs and Stations Automatic Self Tests Low Power Modes Function Sequence Table FST Proportional, Integral, and Derivative PID Roclink 800 Configuration Software DS800 Development Suite Software Expanded Backplane Related Specification Sheets Installation Requirements Issued Mar-06 Installation and UseRemoving the ROC827 from the DIN Rail Site Requirements Environmental Requirements Compliance with Hazardous Area Standards Grounding Installation Requirements Power Installation Requirements 6 I/O Wiring Requirements HousingRequired Tools Removing and Replacing End Caps Removing and Installing Wire Channel Covers To remove a module cover Removing and Installing Module CoversTo install a module cover Mounting the ROC827 on a DIN Rail Side View of the ROC827 Installing the DIN Rail Securing the ROC827 on the DIN RailDIN Rail Catch DIN Rail Mount ROC800-Series Expanded Backplane EXP Removing the ROC827 from the DIN Rail Attaching an Expandable Backplane Power connector on the EXP Backplane Locking clips and tabs Removing an Expandable Backplane Central Processor Unit CPU CPU Front View CPU Number Definitions CPU Connector LocationsStatus LED Color Definitions Solution Status LED Functions Installing the CPU Module Removing the CPU ModuleElectronic components, resulting in interrupted operations License Key License Keys Incorrect Correct Installing a License Key Removing a License Key Startup and OperationTo remove a license key Startup OperationIncorrect polarity can damage the ROC827 Power Input Module Descriptions 1 12-Volt DC Power Input Module PM-12Issued Mar-06 Power Connections Volt dc Power Input Module Terminal Blocks Definition Volts DC 2 24-Volt DC Power Input Module PM-24Volt dc Power Input Terminal Block Connections Volt DC Power Input LED Fault Indicators Auxiliary Output AUX+ and AUX Volt dc Power Input LED IndicatorsGreen LED on when voltage is provided to backplane Green LED on when voltage is provided to CPU Other Equipment Volt dc Auxiliary Power Wiring Switched Auxiliary Output AUXSW+ and Auxsw Determining Power Consumption Process Issued Mar-06 Power Connections Estimated Power Consumption Tuning the Configuration Jumper set for +T @ 24 volts dc Power Consumption of the Analog Input ModulesUsed Cycle Channel Channel’s mA current Draw from +T * 1.25 Channel Channel’s mA current Draw from +T Power Consumption of the Analog Output ModulesUsed Cycle AO Module Base 100 mA @ 12 volts dc 1200 mW Used Cycle DI Module Base Power Consumption of the Discrete Input Modules Used Cycle Do Module Power Consumption of the Discrete Output Modules DOR Module 10. Power Consumption of the Discrete Output Relay Modules Channel Per Active LED Maximum PI Module MVS Module 12. Power Consumption of the MVS Modules Used Cycle RTD Module 65 mA @ 13.25 volts dc Table Total 13. Power Consumption of the RTD Modules14. Power Consumption of the Thermocouple Modules 15. Power Consumption of the Hart Modules Removing a Power Input Module 16. Power Consumption of Other DevicesTotal Installing a Power Input Module Connecting the ROC827 to WiringProperty damage Volts dc Power Supply and BAT+ / BAT- Wiring Wiring the DC Power Input Module Amp Fuse Wiring the External BatteriesPower Supply Terminal Block Solar Regulator Panel Batteries Issued Mar-06 Power Connections 17. Replacement Battery Types Replacing the Internal Battery Name Form Number Part Number 18. Power Input Module Specification Sheets I/O Module Overview Issued Mar-06 Input/Output Modules Slot #2 or Front View Side ViewSlot #1 or Comm Installation Installing an I/O Module Earth ground Removing an I/O Module Analog Input Modules Wiring I/O Modules Current Loop Device 4-20mA Precision +T 12 / 24 V dc Jumper Resistor +T 12 / 24 V dc Jumper Analog Output Modules Field Wiring Discrete Input ModulesRepresentative Internal Circuit Discrete Output Modules Discrete Input Module Field Wiring With powered devices may cause improper operation or damage Representative Internal Circuit Field WiringDiscrete Output Relay Modules Pulse Input Modules 10. Discrete Output Relay Module Field Wiring 11. Pulse Input J4 Jumper Set to +12 RTD Input Modules Representative Field Wiring Internal Circuit CH 1 REF Constant Current + CH 1 + Connecting the RTD WiringRTD Signal Routing Signal Terminal Designation K Type Thermocouple Input Modules RTD WiringWire RTD Red Jumper Red Terminal Wire RTD De-calibration 15. Type J and K Thermocouple Wiring Wiring United States Color Coding SheathedModule to ground Supported I/O Module Specification Sheets Issued Mar-06 Input/Output Modules Communications Built-in on CPU Optional Module Issued Mar-06 CommunicationsCommunications Ports and Modules Overview Built-in Communications and Optional Communication Modules Signals Action Communication LED Indicator Definitions Example RS-485 Communications Module Installing Communication Modules Removing a Communications Module Local Operator Interface LOI Wiring Communications Modules Ground Common Receive Built-in LOI EIA-232 Signal RoutingRJ-45 to EIA-232 RS-232 Null-modem Cable Signal Routing EIA-232 ROC800 RJ-45 Pins RS-232 On ROC800 Series Brown Gray Using the LOIEthernet Communications Red Green Signal Function Ethernet Signal LEDs BASE-T Crossover Cable EIA-232 RS-232 Serial Communications Lit when Comm2 data terminal ready is active Built-in EIA-232 RS-232 Signal Routing Comm2Signal LED Function Lit when Comm2 ready to send is not active Signal RS-485 Function Terminal EIA-422 RS-422 Signal Routing Comm3, Comm4, and Comm510. EIA-485 RS-485 Signal Routing Comm3, Comm4, and Comm5 Signal RS-422 Function Terminal Dial-up Modem Communications Module 12. EIA-485 RS-485 ModuleJumper Terminated Not Terminated TER Out Half Full Tip Ring 14. Modem Signal Routing Comm3, Comm4, and Comm5Signal Pin 13. RJ-11 Field Connections Multi-Variable Sensor MVS Interface Modules 15. MVS TerminationTerminated Not Terminated Jumper MVS Jumper J4 Shown Not Terminated 16. MVS Signal Routing Comm3, Comm4, and Comm5 Hart Interface Module Issued Mar-06 Communications Hart Channels 1 and 3 back side of board Hart Interface Module Field Wiring Hart Channels 2 and 4 front side of board CH2 I/O Switch CH4 I/O Switch D301213X012 17. Related Documentation Troubleshooting J & K Type Thermocouple Input Modules Issued Mar-06 TroubleshootingGuidelines Checklists Serial Communications2 I/O Point Powering Up SoftwareMVS Module Procedures Preserving Configuration and Log DataRestarting the ROC827 Damage Troubleshooting Analog Input ModulesAnalog Input Module Typical Configuration Values Select File Download Value = Vmultimeter 1 ⎟ 4 * Span + Low Reading EU Select Configuration I/O AI Points Select Scanning Enabled and click Apply Troubleshooting Analog Output ModulesTroubleshooting Discrete Input Modules Select Configuration I/O AO Points Troubleshooting Discrete Output Modules Troubleshooting Discrete Output Relay ModulesSelect Configuration I/O DI Points Equipment Required Troubleshooting Pulse Input ModulesTroubleshooting RTD Input Modules Select Configuration I/O PI Points Select Configuration I/O RTD Point Troubleshooting J and K Type Thermocouple Input Modules To test the thermocouple To test the thermocouple module Issued Mar-06 Troubleshooting Issued Mar-06 Calibration CalibrationPreparing for Calibration Issued Mar-06 Calibration Built-in I/O AnalogArea Attribute Crosstalk ConfigurationComm Module Tree Firmware EIA-232EIA-422 RS-422 EIA-485 Local Port Highway Addressable Remote TransducerInput Input Register Msec Manual modeMAC Address Modbus Protocol PresetPoint Point Type System RX or RXDScript Soft Points Issued Mar-06 Glossary Issued Mar-06 Index Battery +12 V dcAlarming Diagnostic Discrete Output Relay Dc Power Supply and BAT+ / BATWiring Dc Power Supply and CHG+ and CHG Function Sequence Table FST Issued Mar-06 Index Local Operator Interface InstallingFuse EIA-422/485 RS-422/485 Communications Specifications Power Input modulesPublic Switched Telephone Networks Setup Wiring MVS Signal Routing Comm3, Comm4Analog Input Module Typical Configuration Using Emerson Process Management Flow Computer Division