RE: [CAD_CAM_EDM_DRO] If I have a Gecko G201 what's my shopping list?

The voltage I was suggesting is specifically for current limiting drives
like the Gecko G2XX series. They actually monitor the current and
rapidly switch the drive on and off to maintain the current that is
selected in the drive. This type of drive is commonly called a chopper
drive. With a non-current controlled drive if you want to increase the
max speed you have to use large resistors to limit the current in
combination with a voltage increase.

While I am not familiar with your setup my experience has been that if
you are driving a stepper at the plate voltage you can do without the
resistors as in your case the motor will only draw 1 A at 12 V.

Tim
[Denver, CO]

> Tim,
> I'm new at this so I may be misunderstanding something, but
> are you saying you would use a 60 vdc power supply for these
> motors marked 4v? I have been using unipolar steppers marked 12v 1A
> and
> I am running them with 10 ohm ballast resistors with a 12 v
> supply. Is the high voltage only used while stepping, then a
> lower voltage used for holding?
>
> Thanks,
> Art