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18
Rockwell Automation Publication 20P-TG004C-EN-P - September 2021
Chapter 2
Component Test Procedures
4.
If any of the signals in the table above is incorrect or missing, verify that
either 115 VAC or 230 VAC voltage is present at terminals U2 and V2
(control circuit power input).
•
If the voltage is present and correct, continue with step 5 below.
•
If the voltage is incorrect or missing, remove control power and verify
the wiring and power source to U2, V2 and correct any problems. Test
the voltage level again to verify that it is correct. If the voltage is correct,
but the drive is still inoperable, continue with step 5 below.
5.
Remove AC control power from terminals U2 and V2 and remove and test
the fuse (F1) at the top of the drive. See Switching Power Supply Fuse
Removal and Installation on page
for fuse location.
•
If the fuse is blown, continue with step 6.
•
If the fuse is not blown, replace the switching power supply board.
6.
Replace the fuse on the switching power supply board. See Switching
Power Supply Fuse Removal and Installation on page
7.
Disconnect the cable at connector XA on the control board. See
on page
for location of connector XA.
8.
Apply AC control power to the drive.
•
If the fuse blows, continue with Testing the Switching Power Supply
and Pulse Transformer Boards on page
below.
•
If the fuse does not blow, continue with Testing the Control and Field
Board Connections on page
Testing the Switching Power Supply and Pulse Transformer Boards
1.
Remove power from the drive.
2.
Replace the fuse on the switching power supply board. See Switching
Power Supply Fuse Removal and Installation on page
3.
Remove the switching power supply board from the drive. See Remove the
Pulse Transformer Circuit Board on page
.
4.
Reapply power to the switching power supply board only.
•
If the power supply fuse does not blow, continue with step 5 below.
•
If the power supply fuse blows, replace the switching power supply
board.
5.
Remove all incoming AC voltage from the drive.
6.
Check all external wiring connected to the pulse transformer board,
including the motor PTC if used, for a possible short circuit condition.
Repair any short circuit conditions if found.
7.
If no short circuit conditions exist, replace the pulse transformer board.