Fanuc alarm
The DC bus voltage in the power supply module dropped too low.
The DC bus voltage in the power supply module dropped too low. The amplifiers can't run the motors without it.
Lock out the machine before reaching into it. Never bypass a door switch or interlock to clear an alarm.
Call an electrician or tech if the incoming power is fine and the alarm keeps returning. The power supply module may need repair.
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The DC bus voltage in the power supply module dropped too low. The amplifiers can't run the motors without it.
Dip or loss of incoming three-phase power. A blown fuse or loose wire on the input power. Failing power supply module. Contactor or breaker problem.
Ask if other machines in the building blinked at the same time. Check the main disconnect and breakers. Write down the code on the power supply display. Call an electrician or tech if the incoming power is fine and the alarm keeps returning. The power supply module may need repair.
Alarm numbers and text can differ by control model, software version and machine builder. This page is a starting point from people who have worked on these machines, not a replacement for your machine builder's manual.
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