Re: [CAD_CAM_EDM_DRO] Better servo performance: Ameteks at 60V, 80V ?

> >
> >
> Generally, the voltage rating of these motors is the softest of limits.
> The one
> place it may be critical is if the motor vendor assumed unlimited current
> from the diver, and is using the motor's resistance to prevent magnet
> damage.

I kind of thought so, but I don't have much experience with this sort of
motor.

> In that case, you need to know (or infer) the motor's peak current
> limit, and
> set the servo driver to not exceed this. I believe this is the case for
> these Ametek
> motors. They have about 4 Ohms resistance, and the 40 V spec. If you set
> the driver for a 10 Amp limit,

We've got the current limit turned way down and we are running them with
4A fuses. The only time we blow one is if we crash the tool.

> you should be safe to turn the supply voltage
> up. If the motors are running cool now, I don't think you'll have any
> problem.

Thanks, Jon.

> Jon
>
>
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--
Kim Lux <lux@...>