Rockwell Automation GV3000/SE 230VAC 1-20 HP GP & Vector Drive Ver. 6.04 Software Start-Up and Ref. - Manual (Page 175)

4-89 Programming Reference
U.042 Outer Control Loop Lead/Lag Low Frequency
This parameter
specifies the lead/lag
low break frequency
of the outer control
loop feedback. Parameter Range: 0.01 to 34.90 radians/second
Default Setting: 1.0
Parameter Type: Tunable
Refer also to parameters: U.040 Outer Control Loop Feedback Source
U.041 Outer Control Loop Lead/Lag Select
U.043 Outer Control Loop Lead/Lag Ratio
U.044 Outer Control Loop Reference Gain
U.045 Outer Control Loop Proportional Gain
U.046 Outer Control Loop Integral Gain
U.047 Outer Control Loop Trim Range Percentage
U.048 Outer Control Loop Proportional Trim Enable
This parameter sets the lead break frequency if U.041 (Outer Control Loop
Lead/Lag Select) = 1 (lead/lag) or the lag break frequency if U.041 = 2 (lag/lead).
The upper limit may be restricted by the lead/lag ratio setting (U.043).
See Appendix G for the outer control loop block diagram.
U.043 Outer Control Loop Lead/Lag Ratio
This parameter
specifies the ratio
between the lead/lag
low break frequency
and high break
frequency of the
outer control loop
feedback lead/lag
block. Parameter Range: 2 to 20
Default Setting: 10
Parameter Type: Tunable
Refer also to parameters: U.040 Outer Control Loop Feedback Source
U.041 Outer Control Loop Lead/Lag Select
U.042 Outer Control Loop Lead/Lag Low Frequency
U.044 Outer Control Loop Reference Gain
U.045 Outer Control Loop Proportional Gain
U.046 Outer Control Loop Integral Gain
U.047 Outer Control Loop Trim Range Percentage
U.048 Outer Control Loop Proportional Trim Enable
The high break frequency is determined by the value in parameters U.042 (Outer
Control Loop Lead/Lag Low Frequency) and U.043 as shown:
High break frequency = Low frequency x ratio = U.042 x U.043
See Appendix G for the outer control loop block diagram.