Rockwell Automation Liqui-Flo AC GP Vector Drive Version 6.4 - Manual (Page 171)

Programming Reference 4-89
.
If U.048 = ON, a gain block scales the outer control loop output proportional to the
speed reference signal at the output of the S/Ramp block (normalized to top speed).
See figure 4.14. See Appendix G for the complete outer control loop block diagram.
This parameter limits the control the outer control loop has on the speed reference
during line start.
U.048 Outer Control Loop Proportional Trim Enable
This parameter
enables the gain
block on the output of
the outer control loop
PI block. Parameter Range: OFF = Disable proportional trim
ON = Enable proportional trim
Default Setting: OFF
Parameter Type: Configurable
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.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
Figure 4.14 – Outer Control Loop Proportional Trim
PI
Rst
G
OCL trim range
(U.047)
Top_spd
Mult
G
OCL Prop Trim
Enable (U.048)
|x|
Speed ref S-curve
block output
Off
On
D iv
O C L o utp ut (to
sp ee d loo p bloc k
diag ra m , se e
A p pe n dix G )