Rockwell Automation 7000A PowerFlex Medium Voltage AC Drive - Air-Cooled (A Frame) - Manual (Page 191)

Commissioning 4-37
7000 “A” Frame 7000A-RM001A-EN-P – January 2011
Failure of LED to illuminate indicates a problem with the power-up
self-test. Refer to Publication 7000-TD002_-EN-P for information
on troubleshooting.
Control Power Transformer (CPT)
A control power transformer is supplied only in certain drive
configurations. If there is no control transformer supplied in the drive
being commissioned, please disregard the following information on
setting the control voltage output level.
Measure the control voltage level at the secondary of the control
power transformer located in the DC link low voltage cabinet of the
drive. Ensure that the output of the transformer matches the
specification on the electrical schematics.
The value of the output can be adjusted by changing the taps on the
control transformer. Ensure that the power is disconnected at the
Disconnect Switch prior to attempting to change the control
transformer tap setting.
U-V V
V-W V Input Control Voltage (V L-L )
W-U V
Control Power Transformer Installed? Yes No
U-V V
V-W V CPT Secondary Voltage (V L-L )
W-U V
U-N V
V-N V
CPT Secondary Voltage (V L-N )
or, if no CPT:
Input Control Voltage (V L-N ) W-N V