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  1. Home
  2. Fault Codes
  3. Yaskawa SGDH
  4. A.10
A.10Alarm · Power sectionUsually repairable

Yaskawa SGDH A.10: Overcurrent Or Heat Sink Overheated

What A.10 means

Overcurrent flowed through the SERVOPACK's power transistors (IGBT), or its heat sink overheated.

Symptoms

Alarm at servo ON or during acceleration; may not reset.

Is it repairable?

Yes: IGBT and power stage repair is common on SGDH units.

Common causes

  • Short or ground fault in the motor or cable
  • Failed IGBT
  • Heat sink overheating from a failed fan or blocked airflow
  • Wrong motor connection

Safe checks

  1. 1With power off, megger the motor and cable
  2. 2Check the U, V, W wiring
  3. 3Check the fan and airflow

Drives hold dangerous voltage after power-off. Checks should only be done by qualified personnel, with power isolated and the DC link discharged.

Reviewed by AutomIQ repair technicians. Code and name from the Yaskawa SGDH SERVOPACK manual.

Related Yaskawa SGDH faults

  • A.30Regeneration Error Detected
  • A.40Overvoltage
  • A.41Undervoltage
  • A.71Overload: High Load
  • A.81Encoder Backup Error
  • A.C9Encoder Communications Error
All 49 Yaskawa SGDH codes

Still showing A.10?

SGDH SERVOPACK showing an alarm?

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Related services: Servo drive repair · Servo motor repair

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