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Koh Young 3030VAL Failure on Homing

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#87751

Koh Young 3030VAL Failure on Homing | 24 March, 2022

My Koh Young 3030VAL errors on the homing routine.

The "DTool" "MCS" gives me an error "Before homing, X-AAxis already checked negative limit..." "Before Hoking, Y Axis already checked negative limit..." "Please turn off the control-power-switch, and release status "

When I check the IO page it says Y-, Y+, X-, X+ are all on.

When measuring the voltage it swings from -24v to +24v depending on which optical sensor is blocked. I've already replaced the motion controller board inside the gray PC. I am looking at the inner connect board that takes all of the individual sensors and connects them to the PCI1/2 cables but am not seeing anything wrong with it.

Any ideas?

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#87752

Koh Young 3030VAL Failure on Homing | 24 March, 2022

Another oddity, when I unplug the PCI1/2 cables and cycle power I still get the same error.

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#87761

Koh Young 3030VAL Failure on Homing | 28 March, 2022

Seemed to have fixed it. When reassembling the gray PC I noticed the motion controller card can be pushed into the PCI connector rather deep. once i raised it up and only pushed it as far as the washer would have it go in it started to work again.

I think the initial issue I was having (no comms with the motion controller) was relating to the network switch going bad. After I replaced that it would communicate fine.

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