Emerson Micro Motion 1000 Series Configuration And Use Manual page 142

Troubleshooting
Table 12-2 I/O problems and remedies continued
Symptom
mA output < 4 mA
No frequency output
132
Possible cause
Process condition below LRV
Fault condition if fault indicator is set to
internal zero
Open in wiring
Bad mA receiving device
Channel not configured for mA
operation (CIO transmitters only)
Bad output circuit
Output not powered (IS transmitters
only)
Process condition below cutoff
Fault condition if fault indicator is set to
downscale or internal zero
Slug flow
Flow in reverse direction from
configured flow direction parameter
Bad frequency receiving device
Incorrect terminal configuration
Output level not compatible with
receiving device
Bad output circuit
Incorrect internal/external power
configuration
Incorrect pulse width configuration
Output not powered (IS transmitters
only)
Possible remedy
Verify process.
Change the LRV.
Check the fault indicator settings to verify
whether or not the transmitter is in a fault
condition.
If a fault condition is present, see Section 12.7.
Verify all connections.
Check the mA receiving device or try another
mA receiving device. See Section 12.16.
Verify channel configuration.
Measure DC voltage across output to verify that
output is active.
Check transmitter wiring. See the installation
manual for your transmitter.
Verify process.
Change the cutoff. See Section 8.7.
Check the fault indicator settings to verify
whether or not the transmitter is in a fault
condition.
If a fault condition is present, see Section 12.7.
See Section 12.17.
Verify process.
Check flow direction parameter. See
Section 8.10.
Verify sensor orientation. Ensure that flow
direction arrow on sensor case matches process
flow.
Check the frequency receiving device or try
another frequency receiving device. See
Section 12.16.
FO can be configured on different terminals.
Verify configuration.
See your transmitter installation manual. Verify
that the output level and the required receiving
input level are compatible.
Perform loop test. See Section 5.3.
Internal means that the transmitter will supply
power. External means that an external pull-up
resistor and source are required. Refer to your
transmitter installation manual for wiring. Verify
configuration is correct for desired application
(see Chapter 6).
Verify pulse width setting.
Check transmitter wiring. See the installation
manual for your transmitter.
Micro Motion Series 1000 and Series 2000 Transmitters