Troubleshooting guide

10
5.3.4 Input/Output Signal Wiring
Signal wiring is routed through the two unused conduit openings at the side of the MPC. All input/output
signals are connected to the terminal strips at the edge of the MPC circuit board. Use caution to observe
proper wire location and signal polarity. Always cap or plug unused openings. Wires should be routed
with in the enclosure in a manner that maintains separation between high voltage and low voltage
conductors. Ensure all low voltage wiring is installed as per any applicable local and national electrical
codes and regulations.
Utilize 20 or 22 AWG, 250 V, shielded cable, with a 105
o
C insulation rating (or better) for all signal
input and output wiring. Recommended strip length is 0.39” or 10 mm. Refer to Figure 4 below for
signal connection locations.
Unused conduit openings should be plugged as required to avoid ingress of moisture and
contaminants into the MPC enclosure. Do not remove the factory provided plug from openings that
are not required for field wiring.
IT IS RECOMMENDED THAT A WRIST STRAP BE WORN WHEN MAKING CONNECTIONS TO ANY
PRINTED CIRCUIT BOARD
.
AN00446-000
Figure 4 – Signal Connections
(note analog in 2 is not yet available