Line voltage fault

What does F383 mean?

The DIAX04 SSE-03VRS power supply unit detected that the incoming AC mains voltage is outside its permissible operating range (either too high or too low). Operating with incorrect line voltage can lead to unstable DC bus voltage, overheating, or component damage. The unit faults to protect itself and connected equipment.

• Incoming AC mains voltage is consistently too high or too low for the DIAX04 SSE-03VRS power supply unit's specification.
• Voltage sag or swell events on the utility power grid.
• Incorrect tap settings on an isolation or step-down transformer feeding the power supply unit.
• Faulty voltage measurement circuit within the DIAX04 SSE-03VRS power supply unit.
• Misconfiguration of line voltage monitoring parameters (e.g., S-0-0130) in the DIAX04 SSE-03VRS.

Click steps to track your progress.

1. 1

   Measure the incoming AC mains voltage at the input terminals of the DIAX04 SSE-03VRS power supply unit over time to check for stability and average value.

2. 2

   Confirm that the measured line voltage matches the specified operating range of the DIAX04 SSE-03VRS power supply unit.

3. 3

   If a transformer is used, verify its tap settings are correct for the actual incoming line voltage.

4. 4

   Check for any loose connections in the main power circuit that could cause voltage drops or spikes.

5. 5

   Review and verify the line voltage monitoring parameters (e.g., S-0-0130, S-0-0131) in the DIAX04 SSE-03VRS to ensure they are set appropriately.