Mains failure

What does F381 mean?

The DIAX04 SSE-03VRS power supply unit has detected a complete loss of its incoming AC mains voltage. This typically means the entire facility power is out, or the circuit supplying the drive has failed. The unit shuts down due to insufficient input power to operate.

• Complete loss of utility power or facility-wide power outage.
• Blown fuses or tripped circuit breaker in the mains supply circuit feeding the DIAX04 SSE-03VRS power supply unit.
• Disconnected or damaged incoming AC mains power cable to the power supply unit.
• Faulty main contactor or switch upstream of the DIAX04 SSE-03VRS power supply unit.
• Internal fault in the rectifier section of the DIAX04 SSE-03VRS power supply unit.

Click steps to track your progress.

1. 1

   Verify the incoming AC mains voltage at the main disconnect or circuit breaker feeding the DIAX04 SSE-03VRS power supply unit.

2. 2

   Check all fuses and circuit breakers upstream of the power supply unit. Reset any tripped breakers or replace blown fuses.

3. 3

   Inspect the incoming AC mains power cable for any physical damage or loose connections at both ends.

4. 4

   Ensure any main contactors or switches are properly closed and supplying power to the DIAX04 SSE-03VRS power supply unit.

5. 5

   If incoming power is present and stable, and the fault persists, inspect the rectifier section of the DIAX04 SSE-03VRS power supply unit (requires skilled personnel).