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.
|Description of Alarm
|Over-voltage alarm (DC voltage abnormally high)
|Low control power voltage alarm
|Low DC link voltage alarm (DC voltage low or trips)
|Regenerative dischage control circuit alarm
|Over-regenerative discharge alarm
|Dynamic brake circuit failure alarm
|L axis over current alarm
|M axis over current alarm
|L and M axis over current alarms
|L axis IPM alarm
|M axis IPM alarm
|L and M axis IPM alarms
|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.