[gudgers leasure]

Good evening.
I have purchased a cnc machine & the stepper motors work O.K when moving all X.Y.Z. axis. but when the stepper motors are stationary there is no holding torque, & the ballscrews are able to be turned by hand.
HAS ANY BODY ANY IDEAS. in simple terms please.
Brian.

[Donkey Hotey]

Is it a Haas mill?

Edit: based on the thread move, I guess it's not a Haas. Good luck with it!

[gudgers leasure]

Hi thank you for your reply the machine is syil x3 machine.
Brian

[James Newton]

It's a feature, not a bug. Your driver or software is putting the drivers to sleep to keep from overheating the motors. There is probably a way to disable that. Contact the technical support at the company you purchased the unit from.

[gudgers leasure]

Hi James,
Thank you for your help, have sent an email to them but they are in China & on Holiday (year of the rabbit i think ),
In simple terms can any one tell me how the holding currant for these stepper motors works Please

Brian.

[canwong]

Change to AC servo motor and drivers

[James Newton]

Sorry I don't know anything about the specifics of those drivers so can't help. Another example of crap from China.