Forum

Share:
Notifications
Clear all

Fault 121 in allen bradley PowerFlex 700 drive

1 Posts
1 Users
0 Reactions
383 Views
Posts: 19833
Admin
Topic starter
(@click2electro)
Member
Joined: 4 years ago

Cause : I/O Comm Loss comes when I/O Board lost communications with the Main Control Board. Check connector. Check for induced noise. Replace I/O board or Main Control Board.

Share: