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Wiring Section 5-3
• The terminals have screws with self-raising pressure plates. Connect the
lead wires to the terminals as shown below.
Terminal Blocks The I/O Units are equipped with removable terminal blocks. The lead wires do
not have to be removed from the terminal block to remove it from an I/O Unit.
5-3-3 Wiring I/O Units with Connectors
This section describes wiring for the following Units:
• CJ-series Basic I/O Units with Connectors (32- and 64-point Units)
CJ-series Basic I/O Units with connectors use special connectors to connec-
tor to external I/O devices. The user can combine a special connector with
cable or use a preassembled OMRON cable to connect to a terminal block or
I/O Terminal. The available OMRON cables are described later in this section.
• Be sure not to apply a voltage that exceeds the input voltage for Input
Units or the maximum switching capacity for Output Units.
• When the power supply has positive and negative terminals, be sure to
wire them correctly. Loads connected to Output Units may malfunction if
the polarity is reversed.
• Use reinforced insulation or double insulation on the DC power supply
connected to DC I/O Units when required by EC Directives (low voltage).
• When connecting the connector to the I/O Unit, tighten the connector
screws to a torque of 0.2 N·m.
• Turn on the power after checking the connector’s wiring. Do not pull the
cable. Doing so will damage the cable.
• Bending the cable too sharply can damage or break wiring in the cable.
17.5 mm
Screw (M3 screw with
self-raising pressure plate)
O
D
21
1
Terminal block leve
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