Z axis playing silly buggers

[cropwell]

Curious bit: What caused the Z traverse in the first place?, it's not an obvious single point of failure with the resultant loss of Z control.

Yes - that is the strange bit, as earlier in the day I had drilled 4 plates with 388 holes in each one. without any glitch. Anyway, I have done some lead swapping in the control box and it seems to be the driver. The offending driver has been removed and the case opened, but no sniff of magic smoke. I have ordered a new driver, but will do some testing to make sure it is not the BoB.

My system runs at 48v and the drivers are M542H with a VDC input of 24-80V. Looking on AliExpress, most of the M542H drivers seem to be 12-32 or 24-50V. Anyway I have found one that says 24-100V input. I would go for better drivers, but the system isn't worth it.

Cheers,

Rob

[cropwell]

Problem found ! Two broken wires in the stepper cable at the top of the Z axis. I was caused by the cable chain end working loose and so flapping the wires on the back of the connector.

[Neale]

What did the man say? "To lose one stepper wire is a misfortune. To lose two stepper wires looks like carelessness!"

But these things happen. I'll be checking all my cable supports to make sure that nothing flexes where it ain't supposed to flex

[Boyan Silyavski]

"To lose one stepper wire is a misfortune. To lose two stepper wires looks like carelessness!"

I have to prepare a special notebook to write down things like that

[Neale]

Not original - it's based on a very well-known quotation from Oscar Wilde's "The Importance of Being Earnest". It's a good line, though!