Rockwell Automation 21G PowerFlex 750-Series AC Drives Programming Manual - Manual (Page 437)

Rockwell Automation Publication 750-PM001J-EN-P - October 2014 437
PowerFlex 755 Control Block Diagrams Appendix A
Figure 71 - Inverter Overload IT
1 2 3 4 5 6
B
A
D
C
F
E
H
G
I
Inverter Overload IT
DB resistor
dc
bus
Bus Reg Mode A Bus Reg Mode B
37
2
37
3
Bus Reg Lv
l Cnfg
37
4
Bus R
eg
Le
vel
37
5
Bu
s Re
g Ki
38
0
Bus Reg Kp
38
1
Bus Limit Kp
376
Bus Limit Kd
377
Bus
Limit ACR Ki
378
Bus Limi
t ACR Kp
379
DB Resistor
Type
382
DB Ext
Ohms
38
3
DB Ext Watts
38
4
DB Ex
tPulseWa
tts
38
5
*
No
te
: Para
me
te
rs
a
re
not functional when any of the FV
motor control
mod
es a
re
se
le
ct
ed
12
DC Bus Memory
Heatsink and
Junction Degree
Calculator
Inverter Overload (IT)
NTC
Pw
r EE Da
ta
Output Current
7
Duty Cycl
e / Rating
DC Bus Vol
tage
PW
M Fre
que
ncy
Pow
er Device
Characteristics
38 11
Dr
ive OL Mode
42
0
Current Limit
Sel
42
1
422 423
Other Ref Sources
Cur
ren
t Limit 1
Current Limit 2
940
D
rive OL Count
941
IGBT Temp Pct
94
2
IGBT Temp C
943
D
riv
e
Temp Pct
944
D
rive Temp C
424
A
ctive Cur Lmt
Alarm Status B
IGBT
OT
96
0
0 1 4 5 6
Heat
sink OT
Driv
e OL
CurL
mt Red
uc
PW
MFrq R
educ
Fault Status B
Driv
e OL
953
2 3 4 5 6
Heat
sink OT
Tran
sistor O
T
SinkU
nderT
m
p
Exce
ss Load
Mtr Over Load (I
2
T)
60 (Hot)
Motor Curre
nt
Mo
to
r
Cur
rent
right of curve
1.
0 -
2.0
(1.025 T
yp)
time (sec) Motor Speed (Hz)
414
Mt
r OL
He
rt
z
X
26
Motor NP Am
ps
18
0
(C
ol
d)
10
2%
15
0%
41
3
Motor OL Factor
41
6
MtrOL Reset Time
50
%
Mtr OL
Actv
410
Mtr OL
a
t Pwr Up
411
Mtr OL
Alarm Lvl
412
Mtr OL Reset Lvl
415
418
Mtr OL Counts
41
9
Motor OL Trip Time
Alarm
Status A
M
otor OL
95
9
2
Fault Status A 95
2
2
Motor O
L
*
Param
eter
Select
ion
[24a
G
5]
d14
A
ctive PWM Freq
‘d’ Prefix Refer
s to Diagnostic Item Numb
er
(ex.
d33) –
R
ef
er
ence Symbol Legend
PF
755 Rev
_10.a
Pag
e 36
[24b G5]
306
Vo
lta
ge Cla
ss
305