Datasheet

REMOVING THE COVER:
1.) Remove the two 2-56 Phillips-head screws on the bottom of the drive.
2.) Slide the cover backwards while lifting until it clears the drive.
REPLACING THE COVER:
1.) Slide the cover forward over the drive until the holes in the cover line up with the holes in the bottom plate.
2.) Replace the screws on the bottom of the drive.
When the motor is critically damped you should see a graph very similar to the “Critically Damped” portion of the chart below.
The manner in which the motor returns to its command position is called damping. At one extreme, called over damped
response, the motor returns to position after a long, drawn out delay. At the other extreme, called under damped response, the
motor returns to its position too rapidly, overshoots, returns and undershoots and so on until it finally settles at its command
position. This is also called ringing; when extreme, the over/undershoot builds in amplitude until the motor enters violent
oscillation. Between the two extremes is the optimal response called critical damping. Here the motor rapidly returns to its
position with little or no overshoot in the minimal amount of time.
TRIMPOT SETTINGS
There are four user-settable trimpots on the G320X. Each one is a single turn trimpot with a range of motion from about the 8
o’clock position to the 4 o’clock position. A drawing is below:
SETTING THE “P”, “I”, “D” TRIMPOTS
“P” and “D” settings generally track each other. If you increase “P” for greater stiffness, an increase in “D” is needed as well to
restore critical damping. Be careful, increasing “P” without increasing “D” may cause the motor to break out into violent
oscillation.