Rockwell Automation Publication 7000L-UM301F-EN-P - March 2020 209
Commissioning Chapter 4
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 in the Disconnect Switch
prior to attempting to change the control transformer tap setting.
AC/DC Converter (PS1)
Every PowerFlex 7000 “C” Frame drive will be supplied with at least one AC/DC
power supply. As the number of devices increases OR to provide a redundant
power supply, the number of AC/DC power supplies installed may be more than
one. The electrical schematics provided by Rockwell Automation will identify
how many AC/DC power supplies have been installed in the application being
commissioned.
Ensure the output of the AC/DC power supply is 56V DC. If any adjustment
is required, refer to
Component Definition and Maintenance on page 265
(Chapter 5) of the drive User Manual.
Input Control Voltage (V
L-L
)U-VV
V-W V
W-U V
Control Power Transformer Installed? Yes
□ No □
CPT Secondary Voltage (V
L-L
)U-VV
V-W V
W-U V
CPT Secondary Voltage (V
L-N
)
or, if no CPT:
Input Control Voltage (V
L-N
)
U-N V
V-N V
W-N V
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