Delta AL04C fault code meaning

Delta / AL04C

Series: ASDA-W3

Excessive movement of the absolute linear motor after the drive is powered off causes an electrical angle error.

servo drive

Meaning: After the drive is powered off, the absolute linear motor moves beyond the range allowed by the servo, causing this alarm to appear immediately at power-on.

Possible causes

Condition: After the drive is powered off, the absolute linear motor moves beyond the range allowed by the servo, causing this alarm to appear immediately at power-on. Cause:
Absolute linear encoder signal error.
The linear encoder is being used for the first time.

Source: ASDA-W3 Series Servo System Application Technical Manual (DELTA_IA-ASD_ASDA-W3_UM_SC_20251226) P733