I have two cards (IB8S/B) on which safety input channel goes to fault about once per day (point status goes to 0).
Inputs are related to two estops (one of double NC contact) and only one contact per estop goes to fault.
I have to either open fuses or actually hit an estop to return point status to 1, after which I read 1 on NC of estop (as is always, I don't believe we actually lose 24V).
Right now machine is not running so I can easily do this but soon I won't be able to do that.
What might be causing this, what should we check for? Anyone had similar issue?
Inputs are related to two estops (one of double NC contact) and only one contact per estop goes to fault.
I have to either open fuses or actually hit an estop to return point status to 1, after which I read 1 on NC of estop (as is always, I don't believe we actually lose 24V).
Right now machine is not running so I can easily do this but soon I won't be able to do that.
What might be causing this, what should we check for? Anyone had similar issue?