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  1. Home
  2. Fault Codes
  3. Yaskawa SGDH
  4. A.30
A.30Alarm · Power sectionUsually repairable

Yaskawa SGDH A.30: Regeneration Error Detected

What A.30 means

The SERVOPACK detected a fault in its regenerative (braking) circuit.

Symptoms

Alarm at power-on or while braking.

Is it repairable?

Yes: regenerative transistor faults are repairable.

Common causes

  • Regenerative resistor disconnected or burnt out
  • Failed regenerative transistor
  • Wrong resistor setting

Safe checks

  1. 1Check the regenerative resistor and its jumper or wiring
  2. 2Measure its resistance with power off

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.10Overcurrent or Heat Sink Overheated
  • A.40Overvoltage
  • A.41Undervoltage
  • A.71Overload: High Load
  • A.81Encoder Backup Error
  • A.C9Encoder Communications Error
All 49 Yaskawa SGDH codes

Still showing A.30?

SGDH SERVOPACK showing an alarm?

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Fault codes
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