Allen-Bradley 23PFC, Руководство по обслуживанию оборудования

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16 Rockwell Automation Publication 23PFC-TG001A-EN-P - March 2018
Chapter 2 Component Test Procedures
For a flow chart version of the remaining steps, see Troubleshooting
Flow Chart on page
143 .
5. If any of the signals in Table 1 is incorrect or missing, verify that either
115V AC or 230V AC voltage is present at terminals U2 and V2
(control circuit power input).
• If the voltage is present and correct, continue with step
6 .
• 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 device is still inoperable, continue with step
6 .
6. Remove AC control power from terminals U2 and V2 and remove and
test the fuse F1 and F2 (if present) at the top of the device.
• If a fuse is open, continue with step
7 .
• If a fuse is not open, replace the switching power supply board.
7. Replace the fuse/fuses on the switching power supply board.
8. Disconnect the cable at connector XA on the control board. See
Control Board Layout on page 141 for location of connector XA.
9. Apply AC control power to the device.
• If a fuse is open, continue with Test the Switching Power Supply and
Pulse Transformer Boards on page 17 .
• If a fuse does not open, use an ohmmeter to check all input and
output wiring on terminals 1…40 on control board terminal blocks
TB1 and TB2 for a possible short circuit condition. Repair any short
circuit conditions if found.
GNDV XY9 Figure 1 on page 18 XA-15 +24V terminal block
ground
+5VEXP +5VEXP Figure 2 on page 19 XP3-1 / XP3-2 / XP3-3 +5V for DPI expansion
+12VEXP +12VEXP Figure 2 on page 19 XP3-4 / XP3-5 +12V for DPI expansion
0VEXP 0VEXP Figure 2 on page 19 XP3-7 / XP3-8 / XP3-9 DPI expansion ground
Table 1 - Control Circuit Board Testpoints
Name Testpoint For Testpoint Location
See Associated Connector-
pin Description