[Cause]
The DC voltage (DC link voltage) of the main circuit power supply of the additional axis amplifier (iSV) of the group and axis displayed in the drive alarm message dropped abnormally.
[Countermeasures]
1. Check whether the wiring of the additional axis amplifier (iSV) of the axis where the alarm occurred is correct.
2. Replace the additional axis amplifier (iSV) for the axis in which the alarm has occurred.
3. In a system with additional axes, this alarm may be issued if a reset signal is input simultaneously with SVOFF and an emergency stop signal such as guardrail opening. After inputting the emergency stop signal, please be careful not to input the reset signal within 2 seconds.
Note To clear this alarm, power needs to be cycled.