Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) Commissioning - ForGe Control - Manual (Page 96)

96 Rockwell Automation Publication 7000-IN012B-EN-P - June 2014
Chapter 4 Commissioning the Drive
Figure 75 - Current Control Group in Service Level Access
5. Energize the drive by closing the input contactor.
6. Record the value of the rectifier input voltage by looking at parameter Rec
Input Voltage (P#696); for example,
V
in0
.
7. For SCR drives, set parameter Idc Command Test in Current Control to
0.800 pu. For AFE drives set the parameter to 0.300 pu; for example, I
dc
.
8. Start the drive and wait for a few seconds for steady state conditions to be
established.
9. Record the value of the rectifier input voltage by looking at parameter Rec
Input Voltage (P#696); for example, V
in1
.
10. Calculate the value of input impedance for AFE drives.
C
in
is the value of input filter capacitor given by Line Filter Cap (P#133).
11. Calculate the value of input impedance for SCR drives.
12. Stop the drive. Set the Operating Mode parameter to Normal and Idc
Command Test to zero.
L
in
V
in0
V
in1
–
I
dc
C
in
V
in0
V
in1
–
 
+
----------------------------------------------------- =
L
in
3 V
in0
V
in1
–
 
I
dc
----------------------------------- =