Configuration and Use Manual
00809-0100-1600
Troubleshooting
November 2022
17.10.4 FO goes in and out of fault conditions
Cause
There is a problem with the interaction between the Output Saturated alert and the fault action configured for the output.
Recommended actions
1. Change the severity of the Output Saturated alert from Fault to another option.
2. Configure the transmitter to ignore the Output Saturated alert or the relevant conditions.
3. Change the configuration of Fault Action from Downscale to another option.
17.11 mA Output troubleshooting
17.11.1 No mAO
Cause
• Output not powered
• Power supply problem
• Wiring problem
• Circuit failure
Recommended actions
1. If applicable, check the output wiring to verify that the output is powered.
2. Check the power supply and power supply wiring.
3. Verify the output wiring.
4. Check the Fault Action settings.
5. Verify channel configuration for the affected mA Output.
6. Measure DC voltage across output terminals to verify that the output is active.
7. Contact customer service.
17.11.2 Loop test failed
Cause
• Output not powered
• Power supply problem
• Wiring problem
• Circuit failure
Recommended actions
1. Check the power supply and power supply wiring.
2. Verify the output wiring.
Configuration and Use Manual 185
Troubleshooting
November 2022
Configuration and Use Manual
00809-0100-1600
3. Check the Fault Action settings.
4. Verify channel configuration for the affected mA Output.
5. Contact customer service.
17.11.3 mAO below 4 mA
Cause
• Output not powered
• Open in wiring
• Bad output circuit
• Process condition below LRV
• LRV and URV are not set correctly
• Fault condition if Fault Action is set to Internal Zero or Downscale
• Bad mA receiving device
Recommended actions
1. Check your process conditions against the values reported by the device.
2. Verify the receiving device, and the wiring between the transmitter and the receiving device.
3. Check the settings of Upper Range Value and Lower Range Value .
4. Check the Fault Action settings.
5. Verify channel configuration for the affected mA Output.
17.11.4 Constant mAO
Cause
• Incorrect process variable assigned to the output
• Fault condition exists
• A loop test is in progress
• Zero calibration failure
• mA Output Direction not set correctly
Recommended actions
1. Verify the output variable assignments.
2. View and resolve any existing alert conditions.
3. Check the direction parameters.
4. Check to see if a loop test is in process (the output is fixed).
5. If related to a zero calibration failure, reboot or power-cycle the transmitter and retry the zeroing procedure.
186 Micro Motion 1600 with Ethernet Transmitters
Configuration and Use Manual
00809-0100-1600
Troubleshooting
November 2022
17.11.5 mAO consistently out of range
Cause
• Incorrect process variable or units assigned to output
• Fault condition if Fault Action is set to Upscale or Downscale
• LRV and URV are not set correctly
Recommended actions
1. Verify the output variable assignments.
2. Verify the measurement units configured for the output.
3. Check the Fault Action settings.
4. Check the settings of Upper Range Value and Lower Range Value .
5. Check the mA Output trim.
17.11.6 Consistently incorrect mA measurement
Cause
• Loop problem
• Output not trimmed correctly
• Incorrect measurement unit configured for process variable
• Incorrect process variable configured
• LRV and URV are not set correctly
• mA Output Direction not set correctly
Recommended actions
1. Check the mA Output trim.
2. Verify the measurement units configured for the output.
3. Verify the process variable assigned to the mA Output.
4. Check the direction parameters.
5. Check the settings of Upper Range Value and Lower Range Value .
17.11.7 mAO correct at lower current, but incorrect at higher current
Cause
The mA loop resistance may be set too high.
Recommended actions
Verify that the mA Output load resistance is below the maximum supported load.
See the installation manual for your transmitter.
Configuration and Use Manual 187
