Details
A communication error has occurred between controller and drive unit.
Remedy
- Take measures against noise.
- Check for any failure of the communication cable connectors between controller and drive
unit or between two drive units.
- Check for any failure of the communication cables between controller and drive unit or
between two drive units.
- A drive unit may be faulty. Take a note of the 7-segment LED contents of each drive unit
and contact the Service Center.
- Update the drive unit software version.
(Note) When two or more "Y02 System alarms" occur at the same time, only the alarm which
has occurred first is displayed.