Rockwell Automation 8520-ARM2 9/Series CNC AMP Reference Manual Documentation Set - Manual (Page 184)

Servo Parameters
Chapter 7
7-38
Function
Specifies the ratio by which the control reduces position loop gain when
the following error reaches the value entered for the Gain Break Point
parameter. A value of one entered here results in no gain break.
A value of .5 reduces the gain by half at gain break.
This parameter is not used for a ZFE Closed--loop axis.
Axis Parameter
Number
Axis Parameter
Number
(1) [1720] (7) [7720]
(2) [2720] (8) [8720]
(3) [3720] (9) [9720]
(4) [4720] (10) [10720]
(5) [5720] (11) [11720]
(6) [6720] (12) [12720]
Range
0 to 1.000000
Notes
Refer to Figure 7.19 on page 7-33 for examples.
This parameter must be set independently for each servo.
7.2.9
Position Loop Gain Break
Ratio