Check For Radio Frequency Interference (Rfi); Check Frequency Output Scaling Method; Check Frequency Output Fault Action - Emerson Micro Motion 2700 Configuration And Use Manual

Troubleshooting
3.
10.20

Check for radio frequency interference (RFI)

The transmitter's Frequency Output or Discrete Output can be affected by radio frequency
interference (RFI). Possible sources of RFI include a source of radio emissions, or a large
transformer, pump, or motor that can generate a strong electromagnetic field. Several
methods to reduce RFI are available. Use one or more of the following suggestions, as
appropriate to your installation.
Procedure
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•
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10.21

Check Frequency Output Scaling Method

If Frequency Output Scaling Method is set incorrectly, the Frequency Output may report an
incorrect value.
1.
2.
10.22

Check Frequency Output Fault Action

The Frequency Output Fault Action controls the behavior of the Frequency Output if the
transmitter encounters an internal fault condition. If the Frequency Output is reporting a
constant value, the transmitter may be in a fault condition.
1.
2.
198
Restriction
For some status alerts, Alert Severity is not configurable.
If there are no active fault conditions, continue troubleshooting.
Use shielded cable between the output and the receiving device.
- Terminate the shielding at the receiving device. If this is impossible, terminate
the shielding at the cable gland or conduit fitting.
- Do not terminate the shielding inside the wiring compartment.
- 360-degree termination of shielding is unnecessary.
Eliminate the RFI source.
Move the transmitter.
Verify the configuration of the Frequency Output.
If you changed the setting of Frequency Output Scaling Method, check the settings
of all other Frequency Output parameters.
Check the status alerts for active fault conditions.
If there are active fault conditions, the transmitter is performing correctly. If you
want to change its behavior, consider the following options:
• Change the setting of Frequency Output Fault Action.
• For the relevant status alerts, change the setting of Alert Severity to Ignore.
Micro Motion Model 2700 Transmitters with Intrinsically Safe Outputs