Hold the Reset Button and the OT Release at the same time, if the estop clears, release the reset while still holding the OT Release button. Jog or handle x and z axis minus direction a couple inches while still holding the OT button, and then release. If this has been tried then disregard. HTH
I could see this being a possibility from just homing from the HOME position already.
Seems like it would say OT alarm instead of E-STOP, but it is older, and the OT and E-STOP could very likely all be in one circuit.
FYI Rockfish, a short starter lesson in CNC:
OT = OverTravel
In this case it will be a "hardware" OT as opposed to a "software" OT.
Once the machine is HOMED it has a "zone" that it is allowed to run inside of via some values entered in the parameters that tell the control the allowable travel limits.
Once you git to the software OT it should stop moving and alarm out - and usually allow you to manually jog the machine back into the zone only. And NOT allow you to continue in the wrong direction.
Once you git very far past the Software OT point lives a limit switch. (Hardware) Usually about .1 to 1/8"..... If you trip the limit switch - the machine goes down.
Generally all the OT limit switches are wired in one long circuit and they ALL need to be made to allow power to engage the servo amps and such. If you have tripped a Hard OT switch, you don't have power to the amps to allow you to move back off of it. On many machines you need to access the lead screw in the offending axis and turn it by hand to get off the switch. On some tho - there is an auxilary loop to ENABLE contactor that is Normally Open. This will be a momentary pushbutton that the opperator can push to ENABLE the servos/hydro to facilitate moving off the switch in JOG mode. Once you are of the switch, you can leave off the pushbutton and the servos should stay running.
Now the answer to the $64K question:
"If I have a Software OT zone, how would I have gotten to the Hardware OT switch in the first bloody place?"
The answer here is that untill you have the machine HOMED, it doesn't have a clue where that zone is. If you are near a limit switch upon enabling the machine (HOME position for any axis generally - but could be the opposite end as well) and you jog the axis the wrong way - you could trip the switch. And there you are - not exactly sure what on Earth is wrong with your machine!
I hope LeeLund is right!
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