Rockwell Automation 20B PowerFlex 70, PowerFlex 700 Reference Manual - Manual (Page 55)

Block Diagrams
Rockwell Automation Publication PFLEX-RM001H-EN-P - June 2013 55
Figure 12 PowerFlex 700VC Block Diagrams (12)
Mtr Ov
er Load (I
2
T)
60 (Hot)
Motor Current
Motor Current
ri
ght of cur
v
e
1.0 - 2.0
(1.025 T
yp)
time (sec) Motor Speed (Hz)
DB resistor
dc b
u
s
243
F
ault x Code
(Motor Ov
er
load)
47
Motor OL Her
tz
In
v
e
rter Ov
er
load IT
Heat sink and
J
unction deg
ree
Calculator
In
v
e
rter Ov
er Load (IT)
NTC
Pwr EE Data
Output Current
(see torque b
loc
k)
235/7 235/7 235/7
Activ
e Cur Limit
Heatsink T
e
mp
Activ
e PWM F
req
3
Duty Cycle
DC Bus
V
oltage
PWM F
requency
P
o
w
er De
vice
Char
acter
istics
X
42
Motor NP FLA
180 (Cold)
102% 150%
48
Motor OL F
actor
220
Motor OL Count
257 255 253 251 249 247 245
50%
151 12
Dr
iv
e OL Mode
150
Current Limit
V
alue
148
234/6 234/6 234/6
243
Alar
m x Code
(In
v OL Le
v
el 1)
257 255 253 251 249 247 245
243
F
ault x Code
(Dr
iv
e
Ov
er
load)
257 255 253 251 249 247 245
(In
v OL Le
v el 2)
(Heatsink OvrT
emp)
161
Bus Reg Mode A
162
Bus Reg Mode B
243
Alar
m x Code
257 255 253 251 249 247 245
243
F
ault x Code
(DB Resistance)
257 255 253 251 249 247 245
(IntDBRes OvrHeat)
03 02 04