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L24v alarm fault code in yaskawa GA500 drive

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Cause : Loss of External Power 24 Supply comes when the voltage of the backup 24 V power supply has decreased. The main circuit power supply is operating correctly.

  1. Examine the external 24 V power supply for disconnected wires and wiring errors and repair the problems. 
  2. Examine the external 24 V power supply for problems.
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