Description
In drive module arg, the rectifier unit at drive unit position arg detects a deenergization of phase arg.
Consequences
The system may stop due to low DC link voltage.
Possible causes
- Input supply voltage phase lost.
- There is some fault in the wiring or internal three-phase components.
- Rectifier unit failure.
Recommended actions
- Check all input power phases to the cabinet.
- Check all three-phase components (main switch, mains filter, fuses, contactors) and wiring inside the drive module.