Delta ALC31 fault code meaning
Delta / ALC31
Series: ASDA-A3
Motor power cable open detection
servo drive
Meaning: The motor power cable (U, V, W) and ground wire (GND) are open.
Possible causes
- Condition: The motor power cable (U, V, W) and ground wire (GND) are open. Cause: The motor power cable (U, V, W) and ground wire (GND) are open. The open-circuit detection protection function is enabled or disabled using parameter P2.065 [Bit 9] and is enabled by default.
Source: ASDA-A3 User Manual (DELTA_IA-ASD_ASDA-A3_UM_SC_20230515) P1195
Series: ASDA-B3, ASDA-E3C-E, ASDA-E3C-L
Motor power cable open detection
servo drive
Meaning: The motor power cable (U, V, W) and ground wire (GND) wiring is open.
Possible causes
- Condition: The motor power cable (U, V, W) and ground wire (GND) wiring is open. Cause: The motor power cable (U, V, W) and ground wire (GND) wiring is open. Open-circuit detection protection is enabled or disabled using parameter P2.065 [Bit 9] and is enabled by default.
Source: ASDA-B3 User Manual (DELTA_IA-ASD_ASDA-B3_UM_SC_20250108) P919; ASDA-E3C-E Application Technical Manual (DELTA_IA-ASD_ASDA-E3C-E_UM_SC_20260612) P567; ASDA-E3C-L Application Technical Manual (DELTA_IA-ASD_ASDA-E3C-L_UM_SC_20260612) P425
Series: ASDA-H3
Motor power cable open detection
servo drive
Meaning:
Possible causes
- The motor power cables (U, V, W) and ground wire (GND) are open. The open-circuit detection protection function is enabled or disabled using parameter P2.065[Bit 9] and is enabled by default.
Source: ASDA-H3 User Manual (DELTA_IA-ASD_ASDA-H3_UM_SC_20260428) P815
Series: ASDA-W3
Motor power cable open detection
servo drive
Meaning: During normal operation, the motor power cable (U, V, W) is loose or open. This detection function is configured by parameter P2.065 [Bit 9] and is enabled by default. During the initial motor identification stage of the identification process using the motor parameter identification wizard, the motor current percentage is < 50% of the current command percentage.
Possible causes
- Condition: During normal operation, the motor power cable (U, V, W) is loose or open. This detection function is configured by parameter P2.065 [Bit 9] and is enabled by default. During the initial motor identification stage of the identification process using the motor parameter identification wizard, the motor current percentage is < 50% of the current command percentage. Cause: During normal operation, the motor power cable (U, V, W) is loose or open. During the identification process using the motor parameter identification wizard
- The motor power cable (U, V, W) is loose or open.
- Insufficient initial internal current loop bandwidth.
Source: ASDA-W3 Series Servo System Application Technical Manual (DELTA_IA-ASD_ASDA-W3_UM_SC_20251226) P776