Check The Scaling Of The Frequency Output; Check Grounding; Check Hart Burst Mode; Check Hart Communications - Emerson Micro Motion 5700 Configuration And Use Manual

Troubleshooting
June 2019

16.21 Check the scaling of the Frequency Output

If the process variable assigned to the Frequency Output goes to a value that would set the Frequency Output
to a signal below 0 Hz or above 12500 Hz, the meter will post an Output Saturated alert for the affected
output, then perform the configured fault action.
Procedure
1. Record your current process conditions.
2. Adjust the scaling of the Frequency Output.

16.22 Check grounding

A sensor and the transmitter must be grounded. If the core processor is installed as part of the transmitter or
the sensor, it is grounded automatically. If the core processor is installed separately, it must be grounded
separately.
Prerequisites
You will need an:
• Installation manual for your sensor
• Installation manual for your transmitter (remote-mount installations only)
Procedure
Refer to the sensor and transmitter installation manuals for grounding requirements and instructions.

16.23 Check HART burst mode

HART burst mode is normally disabled, and should be enabled only if a HART Triloop is being used.
Procedure
1. Check to see if burst mode is enabled or disabled.
2. If burst mode is enabled, disable it.

16.24 Check HART communications

If you cannot establish or maintain HART communications, or if the primary mA output is producing a fixed
value, you may have a wiring problem or a HART configuration problem.
Prerequisites
You may need one or more of the following:
• The installation manual for your transmitter
• A Field Communicator
• A voltmeter
• Optional: The HART Application Guide, available at
256
www.hartcomm.org
Micro Motion 5700 Transmitters with Intrinsically Safe Outputs
Configuration and Use Manual
MMI-20039472