AXBB charge pump fault

[CharlieRam]

The charge pump fault is now fully sorted, the only thing I can assume that caused it was a 15pin dsub extension cable which I used on my pendant, it seems not all of the 15 pins were independent, not had an issue since and repaired it with the help of this forum

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[Ger21]

I use a safety relay because I got them for $10 for NOS on Ebay. If I had to pay the $200 they actually cost, I'd use Jazz's method.

[northbynate]

Thanks!! This is fairly similar to my original plan (minus the relay). I just got hung up on the wireless mpg part and the two types of estop (hard and soft). From what I understand the charge pump can be set to stop when UCCNC is on 'Reset' mode. In Jazz's case this would then be passed on to the safety relay which would in turn cut the contactor. In that case an estop from a wireless mpg could act like a hard wired estop - albiet passing through a layer of software first. Getting the contactor back on would then require both clearing 'Reset' mode in UCCNC and using the physical button to latch the coil of the contactor. I guess my question would be is it possible to have that same behavior from a wireless estop as it is from a hard wired one?

[JAZZCNC]

From what I understand the charge pump can be set to stop when UCCNC is on 'Reset' mode. In Jazz's case this would then be passed on to the safety relay which would in turn cut the contactor. In that case an estop from a wireless mpg could act like a hard wired estop - albiet passing through a layer of software first. Getting the contactor back on would then require both clearing 'Reset' mode in UCCNC and using the physical button to latch the coil of the contactor. I guess my question would be is it possible to have that same behavior from a wireless estop as it is from a hard wired one?

Don't think it works as you think, there is no setting in the software other than to keep the charge pump loaded at all times.

This is from the manual

"If the 'charge pump always on" checkbox is not set then the PWM signal is only active if the software is not in reset and inactive if in reset.

The charge pump signal can be used to enable an external electronics only if the UCCNC software is loaded or if it is not in reset making the operation of the electronics safe."

[northbynate]

"If the 'charge pump always on" checkbox is not set then the PWM signal is only active if the software is not in reset and inactive if in reset."

That's what I was getting at. In this case if UCCNC goes into reset then the charge pump signal stops right? So that can be used as a way to tell if an e-stop on a wireless mpg has been hit. Thanks again for your help!

[JAZZCNC]

"If the 'charge pump always on" checkbox is not set then the PWM signal is only active if the software is not in reset and inactive if in reset."

That's what I was getting at. In this case if UCCNC goes into reset then the charge pump signal stops right? So that can be used as a way to tell if an e-stop on a wireless mpg has been hit. Thanks again for your help!

Kind of but that then defeats the point of a Charge pump, you want the charge pump working all the time.

Also, not sure it will work, you could end up stuck in a loop, Master relay won't reset because don't see the charge pump signal and you can't activate the Charge pump without resetting the software which won't come out of reset without the master saying it's safe to do so.??? Give it a try.!