Hello, Im having an issue with a Fanuc ArcMate 100iB Robot with a R-J3 controller.
Upon Teach Pendant activation, the arm drops until I depress shift + deadman. All axis brakes are disengaged and I can move any axis around freely including J1, this also occurs if I pop the safety gate open and the robot is in hold. Other than that everything works fine, its more of an annoyance issue, especially when trying to stop the robot in a specific location.
I can hear the brakes engage when shift+deadman has been held in for a few seconds and the servos are ready but I often have to jog the robot out of whatever position the arm fell into.
Also, if I release deadman or shift while the TP is on the arm instantly releases brakes.
I have seen this issue on 3 different ArcMate 100iBs so I'm guessing its fairly common but I have been unable to find anything on this forum or any documentation online.
Any help or ideas would be greatly appreciated. Thank you.