Delta AL422 fault code meaning
Delta / AL422
Series: ASDA-A3
Write failure due to loss of control power
servo drive
Meaning: When the indexing coordinate overflow prevention function is enabled (P2.069.Z = 1) and control power is lost, the motor fails to save its current position.
Possible causes
- Condition: When the indexing coordinate overflow prevention function is enabled (P2.069.Z = 1) and control power is lost, the motor fails to save its current position. Cause:
- Continuous operation above the drive's rated load.
- Drive hardware EEPROM error.
- Short circuit in the drive hardware circuit.
- AL520 occurred, causing a drive fault.
Source: ASDA-A3 User Manual (DELTA_IA-ASD_ASDA-A3_UM_SC_20230515) P1193
Series: ASDA-B3
Write failure due to loss of control power
servo drive
Meaning: When the indexing coordinate overflow prevention function is enabled (P2.069.Z = 1) and control power is lost, the motor fails to save the current position.
Possible causes
- Condition: When the indexing coordinate overflow prevention function is enabled (P2.069.Z = 1) and control power is lost, the motor fails to save the current position. Cause:
- Continuous operation above the drive's rated load.
- Drive hardware EEPROM error.
- Short circuit in the drive hardware circuit.
- AL520 occurred, causing a drive fault.
Source: ASDA-B3 User Manual (DELTA_IA-ASD_ASDA-B3_UM_SC_20250108) P917
Series: ASDA-E3
Write failure at control power loss
servo drive
Meaning: When the indexing coordinate overflow prevention function is enabled (P2.069.Z = 1) and control power is lost, the motor fails to save its current position.
Possible causes
- Condition: When the indexing coordinate overflow prevention function is enabled (P2.069.Z = 1) and control power is lost, the motor fails to save its current position. Cause:
- Continuous operation above the rated load of the drive.
- Drive hardware EEPROM error.
- Short circuit in the drive hardware circuit.
- AL520 occurred, causing a drive fault.
Source: ASDA-E3 (DELTA_IA-ASD_ASDA-E3_UM_SC_20260313) P642
Series: ASDA-E3C-E
Write failure at control power loss
servo drive
Meaning: When the indexing coordinate overflow prevention function is enabled (P2.069.Z = 1) and control power is lost, the motor fails to save the current position.
Possible causes
- Condition: When the indexing coordinate overflow prevention function is enabled (P2.069.Z = 1) and control power is lost, the motor fails to save the current position. Cause:
- Continuous operation above the rated load of the drive.
- Drive hardware EEPROM error.
- Short circuit in the drive hardware circuit.
- AL520 occurred, causing a drive fault.
Source: ASDA-E3C-E Application Technical Manual (DELTA_IA-ASD_ASDA-E3C-E_UM_SC_20260612) P565
Series: ASDA-H3
Write failure due to loss of control power
servo drive
Meaning: The motor failed to save its current position when control power was lost with the indexing coordinate overflow prevention function (P2.069.Z) enabled.
Possible causes
- Condition: The motor failed to save its current position when control power was lost with the indexing coordinate overflow prevention function (P2.069.Z) enabled. Cause:
- Continuous operation above the drive's rated load.
- Drive hardware EEPROM error.
- Short circuit in the drive hardware circuit.
- AL520 occurred, causing a drive fault.
Source: ASDA-H3 User Manual (DELTA_IA-ASD_ASDA-H3_UM_SC_20260428) P809