16 Rockwell Automation Publication 20P-TG002B-EN-P - February 2018
Chapter 2 Component Test Procedures
5. Remove AC control power from terminals U2 and V2 and remove and
test the fuse (F1) at the top of the drive. See Remove the Fuses on the
Switching Power Supply Circuit Board on page 60
for fuse location.
• If the fuse is blown, continue with step 6 below.
• If the fuse is not
blown, replace the switching power supply board
(see page 62
).
6. Replace the fuse on the switching power supply board (see page 61
).
7. Disconnect the cable at connector XA on the control board. See
Figure 27
on page 119 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.
• If the fuse does not
blow, continue with Testing the Control and
Field Board Connections on page 16
.
Testing the Switching Power Supply and Pulse Transformer Boards
1. Remove power from the drive (see page 42).
2. Replace the fuses on the switching power supply board (see page 61
).
3. Remove the switching power supply board from the drive (see page 62
).
4. Reapply power to the switching power supply board only.
• If the power supply fuses do not
blow, continue with step 5 below.
• If the power supply fuses blow, replace the switching power supply
board (see page 62
).
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
(see page 62
).
Testing the Control and Field Board Connections
1. Using an ohmmeter, check all input and output wiring on terminals
1…40 on terminal blocks TB1 and TB2 on the control board for a
possible short circuit condition. Repair any short circuit conditions if
found.
2. If an encoder and/or tachometer is used, use an ohmmeter to check all
wiring on the respective terminals for a possible short circuit condition.
Repair any short circuit conditions if found.
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