Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) Commissioning - ForGe Control - Manual (Page 98)

98 Rockwell Automation Publication 7000-IN012B-EN-P - June 2014
Chapter 4 Commissioning the Drive
Figure 76 - Current regulator tuned incorrectly
Figure 77 - Current regulator tuned correctly
10. Set the CurReg Bandwidth parameter to the normal value of 200 rad/s.
Confirm that the rise time of the current feedback is now approximately
5 ms and that the overshoot is not excessive.
11. Set the Idc Ref Step parameter to zero. The dc link current will return to a
steady level given by Idc Test Command.
12. Stop the drive. Set the Operating Mode to Normal, and Idc Test
Command to 0.000 pu.
Motor Impedance
The motor impedance tuning function calculates stator resistance R Stator
(P#129) and total leakage inductance L Total Leakage (P#130) in the Motor
Model Group. Use these parameters to reconstruct the rotor flux. If you adjust
these parameters incorrectly, the resulting distortion in the flux feedback may
cause speed feedback or motor synchronization errors.
Idc Reference
Idc Feedback
63%
0%
Idc Reference
Idc Feedback
63%
0%