Emerson 2700, 1700 installation manual Output Wiring Intrinsically Safe

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Chapter 5

Output Wiring – Model 1700/2700 Intrinsically

Safe Transmitters

5.1Overview

This chapter explains how to wire outputs for Model 1700 or 2700 transmitters with the intrinsically safe outputs option board (output option code D).

Note: If you do not know what outputs option board is in your transmitter, see Section 1.4.

Intrinsically safe outputs require external power. “External power” means that the terminals must be connected to an independent power supply. The output wiring instructions include power setup and power wiring.

Note: The term “passive” is sometimes used to describe externally powered outputs.

Output wiring requirements depend on whether the transmitter will be installed in a safe area or a hazardous area. This chapter describes several possible configurations:

•Section 5.3 describes wiring requirements for the outputs if the transmitter will be installed in a safe area.

•Section 5.4 describes wiring requirements for the outputs if the transmitter will be installed in a hazardous area.

It is the user’s responsibility to verify that the specific installation meets the local and national safety requirements and electrical codes.

5.2Output terminals and output types

Table 5-1describes the outputs and communication protocols available for the Model 1700 or 2700 intrinsically safe transmitter.

Table 5-1Terminals and output types

Terminals	Model 1700 output type	Model 2700 output type	Communication

1 & 2	Milliamp/Bell 202(1)	Milliamp/Bell 202(1)	HART

3 & 4	Frequency	• Frequency (default)	None
		• Discrete

5 & 6	Not used	Milliamp	None

(1) The Bell 202 signal is superimposed on the mA output.

Note: If you will configure the transmitter to poll an external temperature or pressure device, you must wire the mA output to support HART communications. You may use either HART/analog single-loop wiring or HART multidrop wiring.

Output Wiring – Intrinsically Safe

Output Wiring – Configurable I/O Output Wiring – Fieldbus/PROFIBUS

Specifications

Installation Manual

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Contents Micro Motion Model 1700 Model 2700 Transmitters Page Contents Index Before You Begin SafetyOverview Flowmeter components Flowmeter documentation 1Flowmeter documentation resources Transmitter installation proceduresMicro Motion customer service Installation architecture Installing the Transmitter1Installation types Power source Temperature limitsAC power requirements Determining an appropriate location1Typical power cable resistances at 68 F 20 C DC power requirementsMaximum cable lengths Accessibility for maintenance2Maximum cable lengths Mounting the transmitter2Rotating the transmitter Integral installations34-wire remote Wall mount or pipe mount 59-wire remote Wall mount or pipe mount 3 9-wire remote installationsMounting the remote core processor 6Transmitter/core processor assembly Exploded view7Remote core processor Wall mount or pipe mount 3Grounding methods for flowmeter components Grounding the flowmeter componentsRotating the display Supplying powerInstalling the Transmitter 10Display components Cable types Wiring the Transmitter to the Sensor2 9-wire cable 1 4-wire cableWiring for 4-wire remote installations 3Wiring to the mating connector Core processor on transmitter Wiring for 9-wire remote installationsSubtask 1 Wire the remote core processor to the transmitter 5Cable glands 7Wrapping the shield drain wires 10Gland body and core processor housing 129-wire cable between sensor and core processor Subtask 2 Wiring the sensor to the remote core processorWiring the Transmitter to the Sensor Output wiring Output Wiring Model 1700/2700 Analog TransmittersOutput terminals and output types 1Terminals and output types1Basic analog wiring 2HART/analog single-loop wiring Smart Family Output Wiring Intrinsically Safe Safe area mA output wiring Safe area output wiring2Safe area mA output load resistance values 5Safe area frequency/discrete output wiring Safe area frequency/discrete output wiringHazardous area safety parameters Hazardous area output wiringHazardous area voltage 2Safety parametersHazardous area current Hazardous area capacitanceHazardous area frequency/discrete output wiring Hazardous area mA output wiringHazardous area Channel configuration Output Wiring Model 2700 Configurable I/O TransmittersMA output wiring 1Channel configuration2Basic mA wiring Frequency output wiring 5Frequency output Terminals 3 & 4 Channel B Internal power 7Frequency output Terminals 5 & 6 Channel C Internal power 9Discrete output 1 Terminals 3 & 4 Channel B Internal power Discrete output wiring11Discrete output 2 Terminals 5 & 6 Channel C Internal power Volts Voltage Output Level High 2Input voltage ranges for external power Discrete input wiring16Discrete input Terminals 5 & 6 Channel C Internal power Micro Motion Model 1700 and 2700 Transmitters 1Connecting the fieldbus communication wires Foundation fieldbus wiring2Connecting the PROFIBUS-PA communication wires PROFIBUS-PA wiringFunctional specifications SpecificationsPower connection Service port connectionCore processor connection Input/output signals Input signal from sensorFisco and Fnico approval Specifications Operating Absolute minimum = 100 Ohms for V supply 25.6 volts Specifications Digital communication Service portHART/Bell202 Foundation fieldbus or PROFIBUS-PA transmittersEnvironmental requirements Ambient temperature limits Power supplyAmbient temperature effect EMC complianceTransmitter UL and CSAOutputs Atex and IECExPhysical specifications Performance specificationsHousing MountingDimensions WeightInterface/display Dimensions in inchesmm Inches Dimensions in mm Or M20 × 11/16 160 13/16 139 ″-14 NPT 158 182 × Ø3/8 13/16 148 15/16 × 1/2″-14 NPT Figure A-5Dimensions Remote core processor Atex IndexRemote core processor with remote Index Micro Motion Model 1700 and 2700 Transmitters Page 20001700