Delta AL02F fault code meaning
Delta / AL02F
Series: ASDA-A3, ASDA-E3
Stall prevention protection
servo drive
Meaning: The motor speed remains at or below 10 rpm, or a locked rotor condition occurs, and the drive is overloaded.
Possible causes
- Condition: The motor speed remains at or below 10 rpm, or a locked rotor condition occurs, and the drive is overloaded. Cause:
- A fault in the motor or connected mechanism causes mechanical lockup, preventing rotation.
- Operation at extremely low speed or with a locked rotor has continued for too long.
Source: ASDA-A3 User Manual (DELTA_IA-ASD_ASDA-A3_UM_SC_20230515) P1155; ASDA-E3 (DELTA_IA-ASD_ASDA-E3_UM_SC_20260313) P617
Series: ASDA-B3, ASDA-E3C-E, ASDA-E3C-L, ASDA-H3
Stall prevention protection
servo drive
Meaning: The drive is overloaded, and the motor speed remains at or below 10 rpm, or the rotor is locked.
Possible causes
- Condition: The drive is overloaded, and the motor speed remains at or below 10 rpm, or the rotor is locked. Cause:
- A fault in the motor or connected mechanism causes mechanical lockup, preventing rotation.
- Operation at extremely low speed or with a locked rotor has continued for too long.
Source: ASDA-B3 User Manual (DELTA_IA-ASD_ASDA-B3_UM_SC_20250108) P892; ASDA-E3C-E Application Technical Manual (DELTA_IA-ASD_ASDA-E3C-E_UM_SC_20260612) P542; ASDA-E3C-L Application Technical Manual (DELTA_IA-ASD_ASDA-E3C-L_UM_SC_20260612) P413; ASDA-H3 User Manual (DELTA_IA-ASD_ASDA-H3_UM_SC_20260428) P776
Series: ASDA-W3
Stall prevention protection
servo drive
Meaning: When monitored variable -247 [Drive module (DM) overload (AL02C) current (0.1%)] > 100%, the drive module output exceeds the rated load continuously while the motor remains at a very low speed or in a locked rotor condition (at or below 10 rpm or at or below 10 mm/s).
Possible causes
- Condition: When monitored variable -247 [Drive module (DM) overload (AL02C) current (0.1%)] > 100%, the drive module output exceeds the rated load continuously while the motor remains at a very low speed or in a locked rotor condition (at or below 10 rpm or at or below 10 mm/s). Cause:
- The motor output torque cannot meet the mechanism's requirements.
- A mechanism error prevents the motor from running.
- Incorrect control gain parameter settings.
- Field establishment error.
- The pulse encoder is affected by interference.
- Motor and encoder wiring error.
Source: ASDA-W3 Series Servo System Application Technical Manual (DELTA_IA-ASD_ASDA-W3_UM_SC_20251226) P729