Fanuc Alpha Power Supply Alarms and Error Codes

Fanuc Alpha Power Supply Alarms for 200VAC and 400VAC PS modules with codes PSM, PSM-R, PSM HV. Included series are: A06B-6077,  A06B-6081, A06B-6087, A06B-6091

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Alarm CodeDescription of Alarm/Error
1Overcurrent flowed into the input of the main circuit.
2A cooling fan for the control circuit has stopped.
3The temperature of the main circuit heat sink has risen abnormally.
4In the main circuit the DC voltage (DC link) has dropped.
5The main circuit capacitor was not charged with the specific time.
6The control power supply voltage decreases.
7In the main circuit the DC voltage at the DC link is abnormally high.
8There is excessive short-term regenerative power
AA cooling fan of external cooling has stopped.
EThe input power supply is abnormal (open phase)
HThe temperature of the regenerative resistor has risen abnormally.