Rockwell Automation 7000A PowerFlex Medium Voltage AC Drive - Air-Cooled (A Frame) - Manual (Page 215)

Commissioning 4-61
7000 “A” Frame 7000A-RM001A-EN-P – January 2011
L Input High - indicates that the measured L Input is greater
than 0.5 pu. The L Input must be tuned using the manual
method described below.
T DC Link Low - indicates that the measured dc link time
constant is less than 0.020 second. The step response of the current
regulator should be checked using the manual method described
below.
T DC Link High - indicates that the measured dc link time
constant is greater than 0.150 second. The step response of the
current regulator should be checked using the manual method
described below.
NOTE: The display screens are given as an example. The
actual screen data may differ.
Input Impedance Manual Tuning
1.
Set parameter Operating Mode in Feature Select to DC Current
to enter dc current test mode.
2.
If not already at default value, set parameter Input Impedance in
“Current Control” to an initial value of 0.05 pu.
Current Control Parameter Screen
3.
Energize the drive by closing the input contactor.
4.
Record the value of the rectifier input voltage by looking at
parameter Rec Input Voltage (P696). Let this value be V
in0
.
5.
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. Let this value be I
dc
6.
Start the drive and wait for a few seconds for steady state
conditions to be established.