Check Power Supply Wiring - Emerson Micro Motion 2700 Configuration And Use Manual

Troubleshooting
9.5

Check power supply wiring

If the power supply wiring is damaged or improperly connected, the transmitter may not
receive enough power to operate properly.
Prerequisites
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Procedure
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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.
Inspect the voltage label inside the wiring compartment.
The voltage supplied to the transmitter should match the voltage specified on the
label.
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.
Micro Motion Model 2700 Transmitters with FOUNDATION Fieldbus