Fanuc servo amplifier Alarm Code 5 meaning
Alarm Code 5 means “overcurrent (Overcurrent)”, that is, the servo amplifier detects the current flowing through the motor exceeds the allowable range. This alarm usually means that there is an abnormality in the current control of the servo system, which may be caused by an excessive load on the motor, an internal short circuit in the drive, or a cable failure.
1. Effects of overcurrent phenomenon
Motor stops running: The system will automatically cut off the drive signal to protect the equipment.
Servo drive may be damaged: If the problem persists, it may cause the internal power modules (e.g. IGBT, IPM) to burn out.
Impact on the production schedule: A machine stoppage may lead to interruptions in the production line, affecting the delivery cycle.
2. Which Fanuc servo systems are applicable?
Fanuc’s α series, β series servo drives may appear Alarm Code 5, the specific models involved include:
αiSV series (αiSV 20/40/80, etc.)
βiSV series (βiSV 10/20, etc.)
α/β servo motor drive system
Different series of servo amplifiers may have different parameter settings and protection mechanisms, but their alarm codes and troubleshooting logic are basically the same.