Rockwell Automation 20B PowerFlex 70, PowerFlex 700 Reference Manual - Manual (Page 48)

Block Diagrams
48 Rockwell Automation Publication PFLEX-RM001H-EN-P - June 2013
Figure 5 PowerFlex 700VC Block Diagrams (5)
447
446 445
+
121
416
152
Speed Control - Regulator
(1.0 ms)
Droop
23
25
621
P Gain
kp
I Gain
ki s
Limit
Kp Speed Loop Ki Speed Loop
Slip RPM @ FLA
F
eedFwd
kf
Speed F
eedbac
k
Speed Ref
erence
Kf Speed Loop
Droop RPM @FLA
Fdbk Filter Sel
from Speed Cntr
l Ref [4H4]
T
o
T
orque Control Ref
[6A1]
T
estpoint 621
+ -
+ - + -
Lead Lag
620
T
estpoint 620
Lead Lag
416
Fdbk Filter Sel
2 nd
Order
LP
ass
Filter
ks + s +
2
s 2
+ 2
s +
2
ks + s +
ω
ω
ω ω
ω ω