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Fanuc - parts catcher turning off control?

metal-ica

Aluminum
Joined
Jan 19, 2019
I have a KIA 15lms with a fanuc OiTB control.

When the parts catcher goes into the up position and before the unclamp of the sub-spindle the whole control turns off.

I need to manually get the parts catcher down to turn on the control and re-home the machine. During this process if I don't do the "O/P - Can" button trick on startup the machine will get an x over-travel alarm during the home process.

Can a faulty limit switch or something cause the control to just shut itself off? No alarm...just turns off

Any ideas?
 

DouglasJRizzo

Titanium
Joined
Jun 7, 2011
Location
Ramsey, NJ.
A few things.
There could be a part counter somewhere in the control that's tripped, turning the machine off when the catcher is activated.
There could also be a bad ice cube relay in the back cabinet.
Lastly, wiring chafing against the chassis of the machine.
 

Ox

Diamond
Joined
Aug 27, 2002
Location
West Unity, Ohio
My guess would be a rubbed wire taking 24VDC to ground.

Are you sure that it is the catcher, and not possibly the turret coming in to make the cut-off?
The loom to the moving turret is a swell place to rub a wire the wrong way! (very common)

To test:

1) Cycle the catcher in and out with a G99 for a while to see if that ever trips it.

If not:

2) Run the part without the catcher for a while and see if it does it.


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Think Snow Eh!
Ox
 








 
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