[c131fr]

I read the post below about tuning the G320X, but I have the older G320. Instead of trimpots PID (and T), I have "Limit, Damp, Gain".

So Do I just substitute P for Limit, I for Damp, and D for Gain in the following instructions?

2) Turn the "I" trimpot fully off (CCW).

3) The "D" term setting HAS to lead the "P" term. Turn "D" up first, then "P", turn "P" down first before turning "D" down. You can get violent motor oscillations if you don't follow this rule.

Set "P" and "D" to 1/4 full scale. The "D" term is what causes all the noise. Turning it down decreases motor humming, turning it up increases motor humming.

Turning "P" increases servo stiffness, turning "P" down decreases it.

Adjust "D" and "P" until you have OK servo stiffness. Try to turn the motor using your thumb and index finger. A stiff servo will resist a lot, a loose servo will resist very little.

Make the settings where the servo is reasonably stiff while making little or no noise.

4) Now adjust the "I" term CW. It will greatly increase servo stiffness. Once it's adequate, let it be. You are done. The motor will be very quiet and it will be very stiff (resist being moved).

[morestuff]

The old style G320 (no X) does not have an adjustment for the I term.

The Gain is the P term.

The Damp is the D term.

The Limit is the maximum current limit.

Steve Stallings
www.PMDX.com

[c131fr]

Ok, thanks. What I did was to turn the damp off and then the gain on until the motor went completely silent (about 5 o'clock). It was vibrating slightly both before and after 5 o'clock. Then I turned the damp on to about 5 o'clock also, then made very very small adjustments to the gain to remove the tiny vibration that was intermittent. Is that a correct procedure? Thanks!