Re: [CAD_CAM_EDM_DRO] need advice on servo drive please

Be careful with brushless motors. Every manufacturer uses a different
encoder/hall effect sensor system. Very few are interchangeable. Contact
the drive supplier and make sure the drive is compatible with your motor.

Have you checked the brushes and commutator on the Fanuc motor? If the
commutator is dirty, clean it with 600 grit or finer abrasive paper. A
dirty commutator or worn out brushes will make a motor very hard to tune.

Les

skykotech wrote:

>I am getting a bit frustrated with the Fanuc OM DC brush motor on my
>cnc mill (it growls and is very hard to tune in both directions, even
>on the bench) and am thinking of replacing it with a brushless motor I
>have on hand. I currently use Gecko G340 drives for all three axis,
>which work fairly well. I am not sure what drive to get to go with
>the brushless motor...I was thinking about the Accelus digital drive
>made by Copley. It takes step/dir or +/-10V, does sinusoidal
>commutation via encoder feedback, has RS232 setup..sounds pretty
>sweet, and is about $450. Do any of you have experience with this
>drive, or can you recommend another sinusoidal drive?
>
>Thanks for any input
>
>Rick
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