Delta ASDA-A+ Plus Servo Drive

Delta ASDA-A+ Plus Servo Drive Fault Codes:

Fault Code and MeaningCause and Remedy
ALE01

Overcurrent
Cause:

  • Short-circuit at drive output (U, V, W).

  • Motor wiring error.

  • IGBT error (Heat sink overheated).

  • Control parameter setting error.

  • Control command setting error (unstable input).




Remedy:



  • Check wiring connections; repair short-circuited wires and avoid exposed metal.

  • Follow the wiring steps in the user manual to reconnect wiring.

  • Contact your distributor for assistance or contact Delta.

  • Set settings back to factory default and re-adjust.

  • Ensure input command frequency is stable; activate filter function.
ALE02

Overvoltage
Cause:

  • The main circuit voltage has exceeded its maximum allowable value.

  • Input power error (Incorrect power input).




Remedy:



  • Use voltmeter to check input voltage; use correct power supply or stabilizing power.
ALE03

Undervoltage
Cause:

  • The main circuit voltage is below its minimum specified value.

  • No input voltage at main circuit.

  • Input power error (Incorrect power input).




Remedy:



  • Reconfirm voltage wiring.

  • Reconfirm power switch.

  • Use correct power supply or serial stabilizing power.
ALE05

Regeneration error
Cause:

  • Regenerative resistor is not connected.

  • Regenerative switch transistor fault.

  • Parameter setting is in error.




Remedy:



  • Reconnect regenerative resistor.

  • Contact your distributor for assistance or contact Delta.

  • Confirm specifications and correctly reset parameter again.
ALE06

Overload
Cause:

  • The drive has exceeded its rated load during continuous operation.

  • Control system parameter setting is incorrect (mechanical vibration or Accel/Decel too fast).

  • The wiring of drive and encoder is in error.




Remedy:



  • Increase motor capacity or reduce load.

  • Adjust gain value of control circuit; Decrease Accel/Decel time setting.

  • Ensure all wiring is correct (Check U, V, W and encoder).
ALE07

Overspeed
Cause:

  • Speed input command is not stable (too much fluctuation).

  • Over-speed parameter setting is defective (value too low).




Remedy:



  • Ensure input command frequency is stable and activate filter function (P1-06, P1-07, P1-08).

  • Correctly set over-speed parameter setting (P2-34).
ALE08

Abnormal pulse control command
Cause:

  • Pulse command frequency is higher than rated input frequency.




Remedy:



  • Correctly set the input pulse frequency.
ALE09

Excessive deviation
Cause:

  • Maximum deviation parameter setting is too small.

  • Gain value is too small.

  • Torque limit is too low.

  • There is an overload.




Remedy:



  • Increase the parameter setting value of P2-35.

  • Correctly adjust gain value.

  • Correctly adjust torque limit value.

  • Reduce external applied load or re-estimate the motor capacity.
ALE10

Watch dog execution time out
Cause:

  • Watch dog execution error.




Remedy:



  • Check and reset the power supply.

  • If abnormal conditions persist after reset, contact distributor or Delta.
ALE11

Encoder error (Position detector fault)
Cause:

  • The wiring of encoder is in error.

  • Encoder is loose.

  • The wiring of encoder is defective (connections not tight).

  • Encoder is damaged.

  • The circuit (loop) of Encoder is in error.




Remedy:



  • Ensure all wiring is correct according to user manual.

  • Install the motor again.

  • Conduct the wiring again.

  • Repair or replace the motor.

  • Repair or replace the drive.
ALE12

Adjustment error
Cause:

  • The setting value of drift adjustment has exceeded its maximum allowable value.




Remedy:



  • Remove CN1 wiring.

  • Execute the drift adjustment again (Set P2-08 to 20 first, and then set P4-10 to 5).

  • If error persists, contact distributor or Delta.
ALE13

Emergency stop activated
Cause:

  • Emergency stop switch is activated.




Remedy:



  • Activate (reset) emergency stop switch.
ALE14

Reverse (CWL) limit switch error
Cause:

  • Reverse limit switch is activated.

  • Servo system is not stable.




Remedy:



  • Activate (reset) reverse limit switch.

  • Modify parameter setting and re-estimate motor capacity.
ALE15

Forward (CCWL) limit switch error
Cause:


  • Forward limit switch is activated.

  • Servo system is not stable.




Remedy:


  • Activate forward limit switch.

  • Modify parameter setting and re-estimate motor capacity.
ALE16

IGBT temperature error
Cause:


  • The drive has exceeded its rated load during continuous operation.

  • Short-circuit at drive output.




Remedy:


  • Increase motor capacity or reduce load.

  • Ensure all wiring is correct.
ALE17

Memory error
Cause:

Data error in Memory read-out / write-in.



Remedy:

If the error does not clear after resetting the power supply, please contact your distributor for assistance or contact with Delta.
ALE18

DSP communication error
Cause:

Control power is in error.



Remedy:

If the error does not clear after resetting the power supply, please contact your distributor for assistance or contact with Delta.
ALE19

Serial communication error
Cause:


  • Communication parameter setting is defective.

  • Communication address is incorrect.

  • Communication value is incorrect.




Remedy:


  • Correctly set parameter setting.

  • Correctly set communication address.

  • Correctly set communication value.
ALE20

Serial communication time out
Cause:


  • Setting value in time out parameter is not correct.

  • Not receiving communication command for a long time.




Remedy:


  • Correctly set P3-07.

  • Tighten the communication cable, make sure the communication cable is not damaged and ensure all wiring is correct.
ALE21

Command write-in error
Cause:

Control power is in error.



Remedy:

If the error does not clear after resetting the power supply, please contact your distributor for assistance or contact with Delta.
ALE22

Input power phase loss
Cause:

Control power supply is in error.



Remedy:

If the fault does not clear even when the three-phase power is connected correctly, please contact your distributor for assistance or contact with Delta.
ALE23

Pre-overload warning
Cause:

The drive is going to overload.



Remedy:


  1. Please refer to the correction actions of ALE06.

  2. Increase the setting value of P1-56 or set P1-56 to 100 and above.
ALE97

Internal command execution time out
Cause:

An error occurs when internal command is executing.



Remedy:

If the error does not clear after resetting the power supply, please contact your distributor for assistance or contact with Delta.
ALE98

DSP communication error
Cause:

Maybe the hardware is damaged.



Remedy:

If the error does not clear after resetting the power supply, please contact your distributor for assistance or contact with Delta.
ALE99

DSP communication error
Cause:

Maybe the hardware is damaged.



Remedy:

If the error does not clear after resetting the power supply, please contact your distributor for assistance or contact with Delta.
ALE04

“Mismatch” error
Cause:

The type of the servo motor is incorrect.



Remedy:

Repair or replace the servo drive or the servo motor.
ALE24

Encoder error (Position detector fault)
Cause:

Maybe the Encoder is damaged.



Remedy:

If the error does not clear after resetting the power supply, please contact your distributor for assistance or contact with Delta.
ALE25

Encoder error (Position detector fault)
Cause:

The servo drive automatically detect the servo motor is in error.



Remedy:


  1. Please connect the grounding (green color) of U, V, W terminal to the heatsink of the servo drive.

  2. Ensure that the encoder signal cables are placed in separate conduits from the cables connected to R, S, T and U, V, W terminals to prevent the interference.

  3. Please use shielded cables for Encoder wiring.