Originally Posted by MarcL  No evidence of a damaged or failed board. Right now it sounds like power is not getting through your E-stop contactor, either because the contactor is not closing or because the contact points inside are burnt or damaged.
When you press and release emergency stop on the console, do you see and/or hear the contactor clicking in and out?
The UV and USV lights on the servo drive indicate the presence of the motor power supply (ca. 120 VDC on terminals 9 and 10, "Gnd" and VM). This power comes through the E-stop contactor, so the UV and USV lights should go out when you press E-stop, and should come back on when you release E-stop and allow the contactor to close.
If the contactor clicks in when you release E-stop, but the UV and USV lights stay out, but you can make them come on by pressing on the contactor with a dowel, then you probably have burnt contacts inside.
If the contactor does not click in when you release E-stop, then you need to continue looking at the 24VAC loop. |
this might sound funny but on some of the Semians - Irion controlers we have in our machines I have found that the crimp on the wire terminal was bad and recrimping to get a good connect worked , as far as the 24 volts in the contactor I have found the coil can't take much load at dead stops and get fried for some reason- so I always have a replacement till I can determine if the unit is bad , to keep me up and running. I feel the back BEMF spike takes them out in the hard shut down. just a thought. PS is the contactor in 2 parts the relay and the coil the coil part has a built in current limiter and that can be replaced the contactor is a seprate part and that can be replaced too if you have a gren lite that shows the cuirct is good and the coil has no voltage to pull contactor , I would check the coil and there is an adjustment to incress the current , is it a 2.6 or lower contactor ?