Fanuc ALPHA Servo Unit Alarms
ALPHA Servo amplifier unit alarm
On either of the ALPHA SVU or SVUC they have a single seven segment LED display. Which when illuminated with any of the characters below is a fault condition. The following servo unit alarms correspond to different states.
| Alarm Type | LED | Description of Alarm |
| HV | 1 | Over-voltage alarm (DC voltage abnormally high) |
| LV | 2 | Low control power voltage alarm |
| LVDC | 3 | Low DC link voltage alarm (DC voltage low or trips) |
| DCSW | 4 | Regenerative dischage control circuit alarm |
| DCOH | 5 | Over-regenerative discharge alarm |
| DBRLY | 7 | Dynamic brake circuit failure alarm |
| HCL | 8 | L axis over current alarm |
| HCM | 9 | M axis over current alarm |
| HCM | b | L and M axis over current alarms |
| IPML | 8. | L axis IPM alarm |
| IPMML | 9. | M axis IPM alarm |
| IPMLM | b. | L and M axis IPM alarms |
| Circuit Breaker | Trips | Circuit breaker on the side has tripped due to excessive current. |
Fanuc ALPHA SVU e series use LED indicators and the alarm is displayed on the control system CRT or LCD screen.