Check Sensor-To-Transmitter Wiring - Emerson Micro Motion 5700 Configuration And Use Manual

Model 5700 with ethernet
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Prerequisites
Procedure
1.
2.
3.
4.
5.
6.
7.
15.15

Check sensor-to-transmitter wiring

A number of power-supply and output problems may occur if the wiring between the
sensor and the transmitter is improperly connected, or if the wiring becomes damaged.
Be sure to check all wiring segments:
Configuration and Use Manual
You will need the installation manual for your transmitter.
When using DC power, a minimum of 1.5 amps of startup current is required.
Use a voltmeter to test the voltage at the transmitter's power supply terminals.
If the voltage is within the specified range, you do not have a power supply
problem.
If the voltage is low, ensure that the power supply is adequate at the source, the
power cable is sized correctly, there is no damage to the power cable, and an
appropriate fuse is installed.
If there is no power, continue with this procedure.
Before inspecting the power supply wiring, disconnect the power source.
CAUTION!
If the transmitter is in a hazardous area, wait five minutes after disconnecting the
power.
Ensure that the terminals, wires, and wiring compartment are clean and dry.
Ensure that the power supply wires are connected to the correct terminals.
Ensure that the power supply wires are making good contact, and are not clamped
to the wire insulation.
Reapply power to the transmitter.
CAUTION!
If the transmitter is in a hazardous area, do not reapply power to the transmitter with
the housing cover removed. Reapplying power to the transmitter while the housing
cover is removed could cause an explosion.
Test the voltage at the terminals.
If there is no power, contact customer service.
If you have a 4-wire transmitter, check the wiring between the transmitter and the
core processor.
If you have a 9-wire transmitter, check the wiring between the transmitter and the
sensor junction box.
Troubleshooting
229

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