We have an Okuma LC-40, OSP 5000L-G control. For about a month now we continue to get the same alarm 201-5 servo amp XB axis. In the back cabinet the drive has the IOCM led illuminated. We’ve changed out the motor, the drive and card, and cabling. Megged the cables on all four axis. 1000 M Ohms on all twelve cables(u v w for all four axis) Raised feed rate in program. Changed out encoder with a proven, used, encoder twice. We’ve had service techs come out twice to no avail. I am completely at a loss.
The alarm only happens while in the threading cycle. Ran just the groove part of the program and was fine. Any and all help would be greatly appreciated