[phat]

Hi Everyone,

We've had a CNC 88HS for nearly six months or so - bought at an auction - and have had intermittent issues with the spindle inconsistently losing RPM during operation making the machine unreliable. We contacted Fadal who sent out their "best guy" - he recommended an (expensive) encoder change - we did and it didn't help the issue. Whenever the spindle RPM starts to wander, the "Spindle Load" meter reports excessively high load.

This morning we turned on the machine and the "Spindle Load" meter shot up to ~90% without any spindle motion at all (see the attached photo.) I'm assuming the problem is related to our previous RPM issues.

One suggestion has been made internally (here) that perhaps we should clean up all the PCBs (ex. contacts to the back plane inside the control panel) to see if that helps resolve the problem.

Does anyone have another suggestion? Any help would be greatly appreciated.

BTW, we're located in Fremont (Bay Area.)

Thanks.

- Phat