Re: 20 Amp 80 V $99 DC Servodrive

The PID circuit of the G320 is an analog implementation. The
proportional and derivative co-efficients are set via two screwdriver
adjustable trimpots marked "GAIN" and "DAMPING" respectively.

Command the motor to turn about 60 RPM and toggle the direction 1 to
2 times a second. This will place an impulse load on the motor.
You set the "GAIN" to the desired stiffness and then adjust
the "DAMPING" until there is no "ringing" or oscillation.

This is easy to do with the G320. It is tolerant of misadjustment.

Mariss

--- In CAD_CAM_EDM_DRO@egroups.com, "Charles VanLeeuwen"
<cavlon@n...> wrote:

> How does one "tune" the servodrive? With the early Kerr units, you

sent

> serial instructions over the RS485 computer link.
>
> cvl