We are getting 609 Alarm B at powerup. Also OL2 led (The power board is overheated) on both sides of drive. The Alarm points to the drive being bad.
This is a BLIID 30/30D drive that controls the ATC.
The drive was sent to Okuma and the drive test good.
Both motors have been megged and each leg tested at greater than 550 mega ohm to ground at 500v.
We need some ideas.
Thanks
Okuma Model MC50VA
OPS5020M
