Rockwell Automation 21G PowerFlex 750-Series AC Drives Programming Manual - Manual (Page 401)

Rockwell Automation Publication 750-PM001J-EN-P - October 2014 401
PowerFlex 755 Control Block Diagrams Appendix A
Figure 35 - VF, SV Overview
PowerFlex 755
VF (V/Hz), SV Overview
PI Regulator
Speed Contol –
Trim R
egulator (page: 9)
663 664
VHzSV Spd Reg Kp VHzSV Spd Reg Ki
131
Act
ive Vel Fdbk
Final Speed Ref
597
623
VHzSV
SpdTrimReg
PID Regulator
Process Control (pages: 26,27)
108
6
108
7
PID Prop Gain
PID In
t Time
108
8
PID Deriv Time
10
91
PID F
d
bk Meter
PID Ref
M
e
te
r
10
90
1084
PI
D
L
P
Fil
ter BW
109
3
PID Output Meter
1067
PID Ref Sel
1072
PID Fdbk Sel
PID
R
eference Selec
tion
PID
F
eedback Selec
tion
Limit
( PID Output Meter )
Speed Ref Se
le
ct
ion
&
Limi
ts
54
5
55
0
572 573 574 575 577 576
Speed Ref A
Sel
Speed Ref B
Sel
Pr
es
et Speed
2
Pr
es
et Speed
3
Pr
es
et Speed
4
Pr
es
et Speed
5
Pr
es
et Speed
6
Pr
es
et Speed
7
571
Pr
es
et Speed
1
60
8
TrmPct RefA Sel
61
2
TrmPct RefB Sel
60
0
Trim Ref A Sel
60
4
Trim Ref B Sel
592
Selected Spd Ref
PID Output Sel
10
79
PID S
peed
Ex
clusive
S
election
Jogging Select
ion
556
Jog Speed 1
55
7
Jog Speed 2
Lin
ear
Ramp & S Curve
PID Ou
tp
ut
Sel
1079
P
ID Spe
ed
Tr
im
Sele
ction
59
4
Ramped S
p
d Ref
Speed Control –
R
eference (p
ages: 4-6,8,9)
x
+
Sp
ee
d
Ref
Tr
imPct Re
f
Tr
im
Re
f
+
+
V/Hz
Current
Processing
Mo
to
r
( Motor Speed Ref )
S
lip
Comp
S
peed
Trim
Reg
Sele
ction
Limit
+
+
Bus/Current
Limiter
(F
re
q Ramp)
+
+
( Freq Adder )
( Ramp Input Ref )
( Ra
mp Rate )
1
O
utput
Fre
que
ncy
621
Slip RPM at FLA
+
-
Dr
oop
62
0
Dro
op RPM at
FLA
Limit
520
M
a
x Fwd
Speed
521
Max Rev Speed
524
Ove
rspee
d Limit
PF
755 Re
v_10.a
P
age 2
1 2 3 4 5 6
B
A
D
C
F
E
H
G
I