Delta AL428 fault code meaning
Delta / AL428
Series: ASDA-W3
Battery voltage error or auxiliary encoder internal error
servo drive
Meaning: Battery voltage exceeds the specification (> 3.8V), or an encoder signal error occurred.
Possible causes
- Condition: Battery voltage exceeds the specification (> 3.8V), or an encoder signal error occurred. Cause:
- Battery voltage too high.
- Internal encoder error.
- Caused by interference.
Source: ASDA-W3 Series Servo System Application Technical Manual (DELTA_IA-ASD_ASDA-W3_UM_SC_20251226) P766