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Rockwell Automation Publication 23PFC-TG001A-EN-P - March 2018
Appendix C
Troubleshooting Flow Chart
Control Power Supply Failure
Flow Chart
Measure the
voltage at
terminals U2, V2.
Is the correct
voltage present at
U2, V2?
Verify the wiring and
power source to U2,
V2 and correct any
problems.
No
Remove AC control
power and remove
and test the fuses F1
the top of the drive.
Is a fuse blown?
Replace the switching
power supply board
and apply AC control
power.
No
Yes
Yes
Replace the fuse/fuses,
disconnect the cable
from connector XA on
the control board, and
apply AC control
power.
Is the fuse blown?
No
Is the drive
operational?
No
Yes
Use an ohmmeter to
verify that all terminals
on the control board
I/O terminal blocks
are not short circuited.
Are terminals
short circuited?
No
Yes
Remove cable from
connector XR on
control board and
ohmmeter all voltage
testpoints and
commons to verify no
short circuits (values
should be > 200
kohm).
Repair short circuits.
Any values lower
than 200 kohm?
Replace the
control board
Yes
No
Remove power from
the drive and replace
the fuse on the
switching power
supply board.
Remove the switching
power supply board
from the drive.
Apply power to the
switching power
supply board only.
Is the fuse blown?
No
Yes
Replace the
switching power
supply board.
Remove all power
from the drive.
Check all external
wiring to the pulse
transformer board,
including the motor
PTC if used for a short
circuit condition.
Any short circuits?
No
Yes
Replace the pulse
transformer board.
Replace the
control board.
Repair the short
circuits.
and F2 (if present) at
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Страница 130: ...130 Rockwell Automation Publication 23PFC TG001A EN P March 2018 Appendix A Schematics Notes ...
Страница 142: ...142 Rockwell Automation Publication 23PFC TG001A EN P March 2018 Appendix B Circuit Board Layouts and Connections Notes ...
Страница 148: ...148 Rockwell Automation Publication 23PFC TG001A EN P March 2018 Index Notes ...
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