Rockwell Automation GMLC Reference Manual - Manual (Page 149)

Publication GMLC-5.2 - November 1999
112 Configuring Axis Use
You make all changes to gain with the up and down arrows on each field’s
value list. A change to a gain value is made in small increments
(thousandths or ten-thousandths of a unit) to protect material and
machinery from sudden and potentially harmful jolts. When you make a
change to any gain value, the new value immediately becomes the new
working value for that gain.
To adjust gain values:
1. Select Adjust Gains from the Gains page of the Configure Axis Use
dialog box. A dialog box similar to the following appears:
2. In the Position Loop area, make entries in the following fields:
• Proportional Gain – select the up or down arrows to change the
response times to increase the stiffness of the servo system.
Note: If the proportional gain is too high, the system is unstable. If the
proportional gain is too low, the system is loose or sloppy.
• Integral Gain – Select the up or down arrows to improve the
steady-state positioning performance of the system.