
Rockwell Automation Publication 750-PM101B-EN-P - April 2022
71
Chapter 3 PowerFlex 755T Control Block Diagrams
Figure 50 - Torque Control – Current, for Permanent Magnet Motor
1
2
3
4
5
6
B
A
D
C
FH
EG
I
Torq
ue
Con
trol - Cu
rre
nt, for
P
e
rman
e
n
t
M
a
g
n
e
t Mo
to
r (Cu
r PM
)
Po
w
e
r
Unit
T
her
mal
Pr
ot
ec
ti
on
To
rque Limit
Pos
To
rque Limit
N
e
g
Re
gen P
o
w
e
r Li
m
{Re
g
en
Pw
rL
mt
}
Bu
s
Re
gula
to
r
Ca
lc
Pwr
Te
Ve
lF
b
Ac
ti
v
e
Ac
ti
ve Po
s
To
rq
ue L
im
it
Ac
ti
ve
N
e
g
To
rq
ue L
im
it
Li
mi
t
Max
Min
Trq
R
e
f
F
ilt
er
ed
Trq
Re
f Lim
ited
Ac
ti
v
e
Cur Lim
Li
mi
t
Ra
te L
im
Mot
o
r P
o
we
r Li
m
{M
tr
ng P
w
rLm
t}
To
rq
ue
Cur
rent
Ref
Cur
ren
t Ra
te
Lim
P
k
T
o
rqu
e
Iq
Curre
n
t
Li
mi
t
V
o
lt
age
Ref
/
Li
mi
t
G
en
er
ati
on
Curre
n
t Lim
it
1
Cu
rr
e
n
t Lm
t
Sel
Curren
t Lim
it
2
T
h
er
m
a
l Mg
r C
u
rr
en
t Li
mi
t
224
22
1
22
2
22
3
227
20
87
20
80
+
+
10
42
22
9
230
208
4
20
83
Ne
g
Li
mi
t
Pos
Li
mi
t
36
5
21
A
t Li
m
it Sta
tu
s
22
T
rq
Pos
L
m
t
Tr
q N
e
g L
m
t
365
17
A
t Li
m
it Sta
tu
s
18
Tr
qCu
rPo
sL
m
t
T
rq
C
ur
N
e
gL
m
t
Fl
u
x Vecto
r
Para
m
e
te
r
S
e
le
c
tio
n
F
dbk
[G
2]
In
ve
rt IT
[D2]
Tr
q
F
il
t
[H
2
]
Fd
b
k
[
C
6
]
Cu
r I
P
M
[
E2]
-1
23
24
Mt
rn
g
P
w
rL
mt
Re
gen
Pw
rL
m
t
25
26
Cu
r L
m
t
FV
Th
e
rm
R
e
gL
mt
27
28
Bus
V
lt
g
F
VL
m
t
M
tr V
ltg
Lk
g
{B
u
sV
lt
g
F
VLm
t}
{M
tr Vl
tg
Lk
g}
{Cu
r Lm
t
FV
}
{Th
e
rm
R
e
gLmt
}
10
1
Ld
O
bs
[
C
2]
52
T
rq
R
e
fPo
sLimAc
tv
T
rq
R
e
fNegL
im
A
c
tv
51
Iq
sR
efLm
td
A
c
tv
Cu
rL
im
Te
Id
Calc
Vo
lt
a
ge
Li
m
it
Te
Iq
Calc
Id
Li
mi
t
Id
Curr
ent
Ref
25
5
Sc
ale
RMS
16
42
0
0
1
Z
-2
Mt
r Cf
g O
p
ti
ons
(Iq
D
el
ay)
Ca
lc
I
T
,Id
Iq
trl
s
ef
y
trl
l
ilt
s
l
el
Cur IPM