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3-4 Wiring and Connections
This section provides basic information on wiring the Power Supply Unit and
Expansion I/O Units, and on connecting Peripheral Devices.
3-4-1 General Precautions for Wiring
Caution With pre-V1 Units, attach the dustproof label provided before wiring. With V1
Units, leave the dustproof label in place while wiring. If scraps of wire get inside
the Unit, malfunction will result. After completing wiring be sure to remove the
label to avoid overheating.
Dustproof label
I/O Line Noise Do not run CPM1A I/O lines in the same duct or conduit as power lines.
Hanging Ducts
Leave at least 300 mm between the power cables and the I/O or control wiring,
as shown in the following diagram.
CPM1A I/O lines
Control cables and
CPM1A power lines
Power cables
300 mm min.
300 mm min.
Wiring and Connections
Section 3-4
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