Frequency Output Problems - Emerson Micro Motion 5700 Configuration And Use Manual

Troubleshooting
June 2019
4. Zero the meter.
5. Check the grounding of all components.
6. Check for two-phase flow.
7. Verify the receiving device, and the wiring between the transmitter and the receiving device.
8. Check the sensor coils for electrical shorts. If you find problems, replace the sensor
9. Replace the core processor or transmitter.

16.8 Frequency Output problems

16.8.1 No FO
Cause
• Stopped totalizer
• Process condition below cutoff
• Fault condition if Fault Action is set to Internal Zero or Downscale
• Two-phase flow
• Flow in reverse direction from configured flow direction parameter
• Frequency Output Direction not set correctly
• Bad frequency receiving device
• Output level not compatible with receiving device
• Bad output circuit
• Output not powered
• Wiring problem
• Channel not configured for desired output
• Channel not licensed
Recommended actions
1. Verify that the process conditions are below the low-flow cutoff. Reconfigure the low-flow cutoff if
necessary.
2. Check the Fault Action settings.
3. Verify that the totalizers are not stopped. A stopped totalizer will cause the Frequency Output to be
locked.
4. Check for two-phase flow.
5. Check flow direction.
6. Check the direction parameters.
7. Verify the receiving device, and the wiring between the transmitter and the receiving device.
8. Verify that the channel is wired and configured as a Frequency Output.
9. Purchase a license for the channel and upgrade the transmitter firmware.
10. Perform a loop test.
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Configuration and Use Manual
Micro Motion 5700 Transmitters with Intrinsically Safe Outputs
MMI-20039472