Drive Error List - Yaskawa
| Display | Name | Cause | Investigative Actions | Corrective Actions |
| A.020 | Parameter Checksum Error 1 (The parameter data in the SERVOPACK is incorrect.) |
The power supply voltage suddenly dropped. | Measure the power supply voltage. | Set the power supply voltage within the specified range, and set Fn005 to initialize the parameter. |
| The power supply went OFF while changing a parameter setting. | Check the circumstances when the power supply went OFF. | Set Fn005 to initialize the parameter and then set the parameter again. | ||
| The number of times that parameters were written exceeded the limit. | Check to see if the parameters were frequently changed through the host controller. | The SERVOPACK may be faulty. Repair or replace the SERVOPACK. Reconsider the method of writing parameters. | ||
| Malfunction caused by noise from the AC power supply or grounding line, static electricity noise, etc. | Turn the power supply ON and OFF several times. If the alarm still occurs, there may be noise interference. | Take countermeasures against noise. | ||
| Gas, water drops, or cutting oil entered the SERVOPACK and caused failure of the internal components. | Check the installation conditions. | The SERVOPACK may be faulty. Replace the SERVOPACK. | ||
| A SERVOPACK fault occurred. | Turn the power supply ON and OFF several times. If the alarm still occurs, the SERVOPACK may be faulty. | The SERVOPACK may be faulty. Replace the SERVOPACK. | ||
| A.021 | Parameter Format Error 1 (The parameter data in the SERVOPACK is incorrect.) |
The software version of SERVOPACK that caused the alarm is older than that of the written parameter. | Check Fn012 to see if the set software version agrees with that of the SERVOPACK. If not, an alarm may occur. | Write the parameter of another SERVOPACK of the same model with the same software version. Then turn the power OFF and then ON again. |
| A SERVOPACK fault occurred. | -- | The SERVOPACK may be faulty. Replace the SERVOPACK. | ||
| A.022 | System Checksum Error 1 (The parameter data in the SERVOPACK is incorrect.) | The power supply voltage suddenly dropped. | Measure the power supply voltage. | The SERVOPACK may be faulty. Replace the SERVOPACK. |
| The power supply went OFF while setting an utility function. | Check the circumstances when the power supply went OFF. | The SERVOPACK may be faulty. Replace the SERVOPACK. | ||
| A SERVOPACK fault occurred. | Turn the power supply ON and OFF several times. If the alarm still occurs, the SERVOPACK may be faulty. | The SERVOPACK may be faulty. Replace the SERVOPACK. | ||
| Display | Name | Cause | Investigative Actions | Corrective Actions |
| A.030 | Main Circuit Detector Error | A SERVOPACK fault occurred. | -- | The SERVOPACK may be faulty. Replace the SERVOPACK. |
| A.040 | Parameter Setting Error 1 (The parameter setting was out of the setting range.) |
The SERVOPACK and servomotor capacities do not match each other. | Check the combination of SERVOPACK and servomotor capacities. | Select the proper combination of SERVOPACK and servomotor capacities. |
| A SERVOPACK fault occurred. | -- | The SERVOPACK may be faulty. Replace the SERVOPACK. | ||
| The parameter setting is out of the setting range. | Check the setting ranges of the parameters that have been changed. | Set the parameter to a value within the setting range. | ||
| The electronic gear ratio is out of the setting range. | Check the electronic gear ratio. The ratio must satisfy: 0.001< (Pn20E/Pn210) < 4000. | Set the electronic gear ratio in the range: 0.001< (Pn20E/Pn210) < 4000. | ||
| A.041 | Encoder Output Pulse Setting Error | The encoder output pulse (Pn212) is out of the setting range and does not satisfy the setting conditions. | Check the parameter Pn212. | Set Pn212 to a correct value. |
| A.042 | Parameter Combination Error | The speed of program JOG operation (Fn004) is lower than the setting range after having changed the electronic gear ratio (Pn20E/Pn210) or the servomotor. | Check that the detection conditions are satisfied. | Decrease the setting of the electronic gear ratio (Pn20E/Pn210). |
| The speed of program JOG operation (Fn004) is lower than the setting range after having changed the setting of the program JOG movement speed (Pn533). | Check that the detection conditions are satisfied. | Increase the setting of the program JOG movement speed (Pn533). | ||
| The moving speed of advanced autotuning is lower than the setting range after having changed the electronic gear ratio (Pn20E/Pn210) or the servomotor. | Check that the detection conditions are satisfied. | Decrease the setting of the electronic gear ratio (Pn20E/Pn210). | ||
| A.044 | Semi-closed/Fullyclosed Loop Control Parameter Setting Error | The setting of the fully-closed module does not match with that of Pn002.3. | Check the settings of Pn002.3. | The setting of fully-closed module must be compatible with the setting of Pn002.3. |