3. Check the wiring between the sensor and the transmitter.
4. Check for tube erosion, especially if the process fluid is abrasive.
5. Perform Smart Meter Verification.
15.7 Discrete Output problems
15.7.1 No Discrete Output
Cause
• Output not powered
• Wiring problem
• Channel not configured for desired output
• Channel not licensed
• Circuit failure
Recommended actions
1. Check the power supply and power supply wiring.
2. Verify the output wiring.
3. Verify that the channel is wired and configured as a Discrete Output.
4. Purchase a license for the channel and upgrade the transmitter firmware.
5. Contact customer service.
15.7.2 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.
3. Contact customer service.
15.7.3 Discrete Output readings reversed
Cause
• Wiring problem
• Configuration does not match wiring
Troubleshooting Configuration and Use Manual
April 2019 MMI-20048166
178 Micro Motion 4200 Transmitters
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