
84
Rockwell Automation Publication 750-PM101B-EN-P - April 2022
Chapter 3 PowerFlex 755T Control Block Diagrams
Figure 63 - Inverter Overload IT
1
2
3
4
5
6
B
A
D
C
FH
EG
I
In
vert
er Ov
e
rloa
d
IT
(In
v
ert
IT)
He
a
ts
ink
a
n
d
Ju
nc
ti
o
n
De
gr
e
e
Ca
lc
u
lat
or
In
ver
ter
Ov
er
lo
a
d
(
IT
)
NTC
Ou
tp
u
t Cu
rre
n
t
3
Dut
y C
y
cle
/ Ra
tin
g
PWM Fr
e
q
u
ency
Po
w
e
r
F
rame Re
adin
g
Dat
a
425
0:
3
Dri
v
e O
L
Mode
220
Cu
rre
n
t Lm
t S
e
l
22
1
22
2
22
3
Ot
he
r Re
f Sou
rce
s
Cur
ren
t Lim
it 1
Cur
ren
t Lim
it 2
3
5
7
D
ri
ve
O
L
C
o
unt
35
9
IGBT
Temp
P
ct
36
0
IGB
T
T
e
m
p
36
2
He
atsn
k
T
e
mp
Pc
t
36
3
He
atsn
k
T
e
mp
22
4
A
c
ti
v
e Cur Li
m
Alar
m St
at
us
B
IG
B
T
O
T
96
0
0
1
4
5
6
H
ea
ts
ink
O
T
Dri
v
e
O
L
Cu
rL
mt R
e
d
u
c
P
W
M
F
rq R
edu
c
Fa
u
lt St
at
us
B
Dri
v
e
O
L
95
3
2
3
4
5
6
H
ea
ts
ink
O
T
Tr
an
si
st
or O
T
Si
nkU
n
de
rT
m
p
Ex
c
e
ss
Lo
a
d
Para
m
e
te
r
S
e
le
c
tio
n
Cu
r IM [H5
]
42
6
P
W
M
Fre
q A
c
t
306
V
o
lt
a
g
e
Cl
a
ss
305
DC
Bus Volts
Bu
s R
e
g
u
la
to
r
dc
b
us
Bu
s Reg
Mod
e A
Bu
s Reg
Mod
e B
116
117
Bu
s R
e
g
L
v
l
Cfg
118
Bu
s Reg
L
ev
el
119
Bu
s Reg
K
i
121
Bu
s Reg
K
p
120
Bu
s L
imi
t K
p
12
2
Bu
s L
imi
t K
d
12
3
B
us
Li
m
it
AC
R
Ki
12
5
B
us
Li
m
it
AC
R
Kp
12
4
* No
te
: P
a
ra
m
e
te
rs
a
re
no
t fu
nc
ti
on
al whe
n any
of
t
he
F
V
m
o
to
r co
nt
ro
l
mode
s a
re
s
e
le
c
ted
13
DC
B
u
s Memory
*
Bus
M
e
m
o
ry
0
1
2
Li
ne
Si
deR
ef
13
:50
DC
B
u
s C
o
mmand
B
u
sR
e
g
Lev
el
Co
nver
te
r Co
ntr
o
l
B
u
s V
o
lt
ag
e
Refe
ren
c
e
trl
s
ef
y
trl
l
ilt
s
l
el
In
ve
rt