
Rockwell Automation Publication 23PFC-TG001A-EN-P - March 2018
17
Component Test Procedures
Chapter 2
Test the Switching Power Supply and Pulse Transformer Boards
Complete these steps to test the switching power supply and pulse transformer
circuit boards.
1. Replace the fuse/fuses on the switching power supply board.
• For frame A devices, see page
• For frame B devices, see page
2. Remove the switching power supply board from the pulse transformer
board.
• For frame A devices, see page
• For frame B devices, see page
3. Reapply power to the switching power supply board only.
• If a fuse does not open, continue with step
• If a fuse opens, replace the switching power supply board.
4. Remove all incoming AC voltage from the device.
5. Check all external wiring that is 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.
6. If no short circuit conditions exist, replace the pulse transformer board.
Содержание 23PFC
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