Delta AL50B fault code meaning
Delta / AL50B
Series: ASDA-W3
The STO hardware version of the control module (CM) is too old
servo drive
Meaning:
Possible causes
- The internal hardware of control module STO is an old version.
Source: ASDA-W3 Series Servo System Application Technical Manual (DELTA_IA-ASD_ASDA-W3_UM_SC_20251226) P772