A06B-6114-H105 FANUC Servo amplifier Alpha iSV 1-80 FSSB

Common FANUC A06B-6114-H105 Alarm Codes and Troubleshooting Steps

• Alarm Code 1: Internal Cooling Fan Stopped
  • Check for foreign material in the fan.
  • Ensure the fan connector is attached correctly.
  • If the issue persists, replace the fan.
  • If the fan replacement does not resolve the issue, replace the SVM module.
• Alarm Code 2: Control Power Supply Under Voltage
  • Check the three-phase input voltage (must not be lower than 85% of the rated input voltage).
  • Verify the 24V power supply output from the PSM (normally above 22.8V).
  • Inspect the connector and cable (CXA2A/B).
  • Replace the SVM module if necessary.
• Alarm Code 5: DC Link Under Voltage
  • Ensure the screws for the DC link connection cable are tight.
  • If multiple modules experience this alarm, troubleshoot the power supply module.
  • If only one module is affected, replace the SVM module.
• Alarm Code 6: Overheat
  • Verify the motor is operating within its continuous rating.
  • Check the cabinet's cooling capacity (inspect fans and filters).
  • Ensure the ambient temperature is not too high.
  • Replace the SVM module if overheating persists.
• Alarm Code F: Cooling Fan Stopped (Radiator)
  • Inspect for foreign material in the fan.
  • Ensure the fan connector is properly attached.
  • Replace the fan if necessary.
  • If unresolved, replace the SVM module.
• Alarm Code P: Communication Error Between Amplifier and Module
  • Check the connector and cable (CXA2A/B).
  • Replace the control printed-circuit board if needed.
  • Replace the SVM module if the issue persists.
• Alarm Code 8: DC Link Current Alarm
  • Disconnect the motor power leads and release the SVM from emergency stop condition.
  • If insulation between PE and motor power leads is deteriorated, check the motor or power leads.
  • Replace the motor or power lead as necessary.
  • If unresolved, replace the SVM module.
• Alarm Code 8.9.A: IPM Alarm (OH)
  • Ensure the heat sink cooling fan is running.
  • Verify the motor is operating within its continuous rating.
  • Check the cabinet's cooling capacity (inspect fans and filters).
  • Ensure the ambient temperature is not too high.
  • Replace the SVM module if necessary.
• Alarm Code bcd: Abnormal Inverter Motor Current
  • Verify servo parameters as per the FANUC AC Servo Motor i series Parameter Manual.
  • If abnormal motor current occurs during rapid acceleration/deceleration, adjust the acceleration/deceleration time constant.
  • Check insulation between PE and motor power leads.
  • Replace the motor, power lead, or SVM module as necessary.

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