
134
Micro Motion
®
Model 2400S Transmitters with Analog Outputs
Troubleshooting
Table 11-2
I/O problems and remedies
Symptom
Possible cause
Possible remedy
No output
Loop test failed
Power supply problem
• Check power supply and power supply wiring.
See Section 11.14.1.
Channel not configured for desired
output
• Verify channel configuration for associated
output terminals. See Section 6.3.
Incorrect internal/external power
configuration
• 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, and
verify configuration (see Section 6.3).
Output not powered
• Check transmitter wiring. See the transmitter
installation manual.
mA output < 4 mA
Process condition below LRV
• Verify process.
• Change the LRV. See Section 6.5.2.
Fault condition if fault indicator is set to
internal zero or downscale
• Check the fault indicator settings to verify
whether or not the transmitter is in a fault
condition. See Section 6.5.5.
• If a fault condition is present, see Section 11.7.
Open in wiring
• Verify all connections.
Bad mA receiving device
• Check the mA receiving device or try another
mA receiving device. See Section 11.16.
• Perform output simulation to locate the
problem. See Section 11.10
Bad output circuit
• Measure DC voltage across output to verify
that output is active.
• Perform output simulation to locate the
problem. See Section 11.10
Incorrect internal/external power
configuration
• 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, and
verify configuration (see Section 6.3).
Output not powered
• Check transmitter wiring. See the transmitter
installation manual.
Summary of Contents for Micro-Motion 2400S
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