Dynomotion Forum

Hi Tom,
i had to move some of the cabling on my CNC machine and wired A+ to B+ and A- to B- on J5, my Z axis. When I powered up, the Z axis didn't work obviously. When I found the wiring error I rewired to fix the problem but the Z Axis still didn't work. There are zero volts between A+ to A- and B+ to B- on J5. Did I fry my Kstep? Is there a fuse? Any hope for recovery or do I need to order a new Kstep?

Sometimes it's better to leave well enough alone.

Jack

Hi Jack,

Sorry to hear this. Yes crossing the coils is one of the worst things. Current limits are applied to the wrong FETs. It is likely damaged.

Fuses are normally too slow to protect against this. KStep doesn't have any fuses.

We don't find it cost effect to repair. You will likely need to replace the KStep.