SRVO- 018 Brake Abnormal Fanuc R-J2 Controller NEED HELP PLEASE!!!!

[BrightTech]

One of our Fanuc R-J2 gave us the srvo 18 brake abnormal error. It only turns on after you jog the robot for a couple of seconds. And if you shut the cabinet off, the svro resets itself. I looked in the Maintenance Manual book and it says to check the RM1 Cable, so I replaced it and it still gives us the error. The book says if that doesn't solve it, then replace the Servo Amplifier..... so I replaced the Servo Amplifier with a good one, but we still have the error.......  Any ideas or advice would be greatly appreciated!

Thanks

[BrightTech]

We solved one of our robots by replacing the redundant e stop.

[cunaf]

It may be time to neuter the robot.  I have seen this alarm many times due to shorted MOV's (surge suppressors)  in the base of the robot.  Open the base, locate the fried MOV where it parallels into the brake harness and simply cut it off. The robot will run fine without besides it's an R-J2 and this is 2012 lol

[BrightTech]

Ok thanks cunaf!! I will try that next time we have the error!!

[Sevastopol1]

I've seen this caused by one of the brakes itself, was very intermittent and nearly every other component was swapped before the faulty brake/motor was replaced.

[roboteacher]

We deal in strickly re-manufactured arms and this error is very typical.  Shipping or even robot vibration causes the cables on the "safety card" to come loose.  We've recently had to replace the entire card on a 4 axis 410 (what a pain in the ass that was).  I'd bet money it's card or safety related and not the actual brake.