Allen Bradley PowerFlex 70, PowerFlex 700, PowerFlex 700L & PowerFlex 700S Drive
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Mar 12, 2024 5:41 am
Cause : HiHp Bus WtchDog comes when Bus Communication Watchdog Error - communication has halted in the communication bus, causing the watch dog timer to expire.
1. Check fiber-optic connections between the Power Interface Circuit Board and Voltage Feedback Circuit Board.
2. Check connections between the Main Control Board and the Power Interface Circuit Board.
3. Replace the Voltage Feedback Circuit Board.
4. Replace the Power Interface Circuit Board.
5. Replace the Main Control Board.
