Emerson 2700, 1700 Hazardous area output wiring, Hazardous area safety parameters

Page 41

Output Wiring – Model 1700/2700 Intrinsically Safe Transmitters

Figure 5-6Safe area frequency/discrete output load resistance values

Rmax = (Vsupply – 4)/0.003

Rmin = (Vsupply – 25)/0.006

Absolute minimum = 100 ohms for supply voltage less than 25.6 Volts

 

10000

 

 

 

 

 

 

 

 

 

 

 

 

 

9000

 

 

 

 

 

 

 

 

 

 

 

 

(Ohms)

8000

 

 

 

 

 

 

 

 

 

 

 

 

7000

 

 

 

 

 

 

 

 

 

 

 

 

range

 

 

 

 

 

 

 

 

 

 

 

 

6000

 

 

 

 

 

 

 

 

 

 

 

 

load

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R

5000

 

 

 

 

 

 

 

 

 

 

 

 

-up resistor

 

 

 

 

 

 

 

 

 

 

 

 

4000

 

 

 

 

 

 

 

 

 

 

 

 

3000

 

 

 

 

 

 

OPERATING REGION

 

 

pull

2000

 

 

 

 

 

 

 

 

 

 

 

 

External

 

 

 

 

 

 

 

 

 

 

 

 

1000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

5

7

9

11

13

15

17

19

21

23

25

27

29

Supply voltage VDC (Volts)

5.4Hazardous area output wiring

The following notes and diagrams are designed to be used as a guide for wiring the Model 1700 or Model 2700 outputs for hazardous area applications.

5.4.1Hazardous area safety parameters

The proper barrier selection will depend on what output is desired, which approval is applicable, and many installation-specific parameters. The information that is provided about I.S. barrier selection is intended as an overview. Refer to barrier manufacturers for more detailed information regarding the use of their products. Application-specific questions should be addressed to the barrier manufacturer or to Micro Motion.

WARNING

Hazardous voltage can cause severe injury or death.

To reduce the risk of hazardous voltage, shut off the power before wiring the transmitter outputs.

Output Wiring – Intrinsically Safe

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

Specifications

Installation Manual

37

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Contents Micro Motion Model 1700 Model 2700 Transmitters Page Contents Index Overview SafetyBefore You Begin 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 SensorWiring for 4-wire remote installations 1 4-wire cable2 9-wire cable 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 connectionFisco and Fnico approval Input/output signals Input signal from sensorCore processor connection 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 MountingInterface/display WeightDimensions 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
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