Rockwell Automation 20G PowerFlex 750-Series AC Drives - Manual (Page 219)

Rockwell Automation Publication 750-RM002B-EN-P - September 2013 219
Motor Control Chapter 4
Figure 24 - Flux Up Current versus Flux Up Time
Once rated flux is reached in the motor, normal operation begins and the desired
acceleration profile is achieved.
Rated Flux Reached
Once rated flux is reached in the motor, normal operation begins and the desired
acceleration profile is achieved.
0
Flux Up Current = Maximum DC Current
Rated Motor Flux
Motor Flux
Rated Flux
Current
Flux Up Time
T1
T2
T3
T4
Fl
ux
U
p C
ur
re
nt
Stator Voltage
Rotor Speed
Motor Flux
Stator Freq
Flux Up
Voltage
Time
Flux Up Normal Operation
IR Voltage - SVC
Greater of IR Voltage or
Voltage Boost - V/Hz