• Power supply problem
• Wiring problem
• Circuit failure
• Channel not configured for desired output or input
• Incorrect internal/external power configuration
Recommended actions
1. Check the power supply and power supply wiring.
2. Verify the output wiring.
3. Check the Fault Action settings.
4. Verify channel configuration for the affected mA output.
5. Contact customer service.
17.12.3 mAO below 4 mA
Cause
• Incorrect internal/external power configuration
• 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.
17.12.4 Constant mAO
Cause
• Incorrect process variable assigned to the output
• Fault condition exists
• Non-zero HART address (mA Output 1)
• A loop test is in progress
Configuration and Use Manual Troubleshooting
MMI-20025166 March 2019
Configuration and Use Manual 259
To Next Page
Loading...
