Yaskawa E7, G7, GA800 & GA500 Drive
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Mar 19, 2024 5:20 am
Cause : Undervoltage 3 (Soft-Charge Bypass Relay Fault) comes when the soft-charge bypass relay failed or the relay or contactor on the soft-charge bypass relay is damaged.
• Cycle power to the drive and see if the fault reoccurs.
• Check monitor U4-06 for the performance life of the soft-charge bypass relay.
• Replace either the control board.
