Allen-Bradley 23PFC, Hardware Service Manual

Page: 87 / 150

Rockwell Automation Publication 23PFC-TG001A-EN-P - March 2018 87
Frame B Field Controller Part Replacement Procedures Chapter 4
115V AC to 24V DC I/O
Converter Circuit Board
Replacement Remove the 115V AC to 24V DC I/O Converter Circuit Board
1. Read the General Safety Precautions on page 10 .
2. Remove power from the device (see page 79 ).
3. Remove the protective covers from the device (see page 80 ).
4. Remove the plug-in I/O terminal blocks with the wiring kept in place.
5. Remove the two M3 x 6 mm screws and washers that secure the I/O
converter board to the stand-offs on the control board and remove the
I/O converter board.
6. Remove the two stand-offs from the control board.
IMPORTANT Mark all connections and wires before removal to avoid incorrect
wiring during reassembly.
=
5
Torque Specification:
1.0 N•m (8.9 lb•in)
6
Torque Specification:
1.0 N•m (8.9 lb•in)