Rockwell Automation 21G PowerFlex 750-Series AC Drives Programming Manual - Manual (Page 383)

Rockwell Automation Publication 750-PM001J-EN-P - October 2014 383
PowerFlex 753 Control Block Diagrams Appendix A
Figure 19 - Torque Control - Current (IM)
1 2 3 4 5 6
B
A
D
C
F
E
H
G
I
Torque Control –
C
urrent
Induction Motor (IM)
Power
Un
it
Thermal Protection
Ca
lc
Is
,Id
Iq
Pos Torque Limit
{Trq N
eg Lmt
}
Neg Torque Limit
{Trq P
os Lmt}
Regen Power Lmt
{Regen
PwrLm
t}
Bus
Re
gula
to
r
Calc Pwr
Te
Active Vel Fdbk
A
ctive P
os
T
orque Limit
A
ctive N
eg
Tor
que Lim
it
Limit
Max Mi
n
Filtered Trq
Ref
Lim
ited Trq Re
f
Motor Ctrl Mode
Flux Current
Fdbk
Calc
Iq,Id
Is
Active Cur Lmt
Lim
it
Calc Te
Iq
Rate Li
m
Motor Power Lmt
{M
trng P
w
rLmt
}
Torque Current
Ref
Cur
ren
t Ra
te
L
m
t
Min
P
k Torq
ue Iq C
urrent L
imit
V
oltage R
ef/
Li
mit
Generat
ion
Cur
rent Lmt 1
Current Lmt Sel
Current Lmt 2
Activ
e Iq Cu
rrent Li
mit
Th
ermal M
gr Cu
rrent Li
mit
424
421 42
2
423
425
69
0
689
+
+
35
131 42
6
427 671 67
0
N
eg
Lim
it
Pos Limit
VF or
SV
(0-2,7,
8)
F
lux Vec
tor
(3
)
945
21
At Limit Status
22
Trq P
os Lmt
Trq
Neg Lm
t
94
5
17
At Limit Status
18
T
rqCurP
osLmt
T
rqCurN
egLmt
Flux Vector
Param
eter
Selec
tion
Fr
om Fdbk
[3
F2]
[30D2]
From Torq
Ctrl
[17H2]
[3
C6]
1
Flux
1
Flux
-1
Flux
-1
Flux
23 24
M
trng Pw
rLmt
Reg
en Pwr
Lmt
25 26
Cur Lm
t FV
T
herm RegLm
t
27 28
BusVlt
gFVLm
t
Mtr V
ltg Lkg Flux
{Bu
sVltgFV
Lmt}
{Mtr V
ltg Lkg
}
{Cur Lm
t FV}
{The
rm Re
gLmt}
PF753
Rev_10.
a
Page 18
a