Hello.

I own a hsd atc spindle es929 9kw .

Fitted on a cnc router.

Yesterday the spindle shaft not turrning but the running sound is coming from inside the spindle the
Sound was not bad.

While troubleshooting i several times start the spindle for 2 to 5 sec and stop.

In the end i find that the power connector on the spindle top a phase contact not good thats why the single phasing happens.

Question is as i mention i start and stop the spindle sevral times does this effect or damage the motor beacuse the spindle is not getting all three phases.

Other thing is if due to single phasing the spindle shaft not turning whats inside which is running and make sound.

Does the hsd atc spindle es929 9kw has some protection in this scenario.

Kindly give your expert advice.