Re: [CAD_CAM_EDM_DRO] High Voltage servo cards

Mark Vaughan wrote:

> Hi Guys
>
> I'd like to ask what other HIGH VOLTAGE servo cards are some of you are
> using.
>
> I've just lost another Rutex which has gone noisy, grunchy motor control,
> and gaining steps, change the card and it's OK so must be a bad card.
>
> The PID control on the Rutex is brilliant, but they suffer from noise, which
> I've just about got a handle on, and seems have a few other weaknesses.

Well, please excuse me for tooting my own horn here, but my PWM
servo amplifiers can run at voltages well above what a Gecko can
handle. I haven't run them much over 120 V yet, but the design
was made for up to 160 V with plenty of margin left. What
voltage and current do you need?

My servo amps have output filters in them, so the motor wires do
not radiate interference that could contaminate encoder signals.
That has never been a problem when using my amps. These filters
also reduce circulating high-frequency currents, allowing the
motors and the amps themselves to run a lot cooler.

See <http://jelinux.pico-systems.com/pwmservo.html> for more info.

These are not step/direction servos like Gecko and Rutex, so
they need a controller capable of generating the PWM signals.
See <http://jelinux.pico-systems.com/univpwm.html> for info on
my controller for these amps.

Jon