Allen-Bradley PowerFlex 70

Block Diagrams 2-45
Figure 2.12 PowerFlex 700VC Block Diagams (12)
Mtr Over Load (I
2
T)
60 (Hot)
Motor
Current
Motor
Current
right of curve
1.0 - 2.0
(1.025 Typ)
time (sec)
Motor Speed (Hz)
DB resistor
dc bus
243
Fault x Code
(Motor Overload)
47
Motor OL Hertz
Inverter Overload IT
Heat sink and
Junction degree
Calculator
Inverter Over Load (IT)
NTC
Pwr EE Data
Output Current
(see torque block)
235/7 235/7 235/7
Active Cur Limit
Heatsink Temp Active PWM Freq
3
Duty Cycle
DC Bus Voltage
PWM Frequency
Power Device
Characteristics
X
42
Motor NP FLA
180 (Cold)
102% 150%
48
Motor OL Factor
220
Motor OL Count
257 255 253 251 249 247 245
50%
151
12
Drive OL Mode
150
Current Limit
Value
148
234/6 234/6 234/6
243
Alarm x Code
(Inv OL Level 1)
257 255 253 251 249 247 245
243
Fault x Code
(Drive Overload)
257 255 253 251 249 247 245
(Inv OL Level 2)
(Heatsink OvrTemp)
161
Bus Reg Mode A
162
Bus Reg Mode B
243
Alarm x Code
257 255 253 251 249 247 245
243
Fault x Code
(DB Resistance)
257 255 253 251 249 247 245
(IntDBRes OvrHeat)
03 02 04