5-4-8
Wiring to the CPU Unit Terminal Block
This section describes how to connect wires to the screwless clamping terminal block on the CPU
Unit, the installation and removing methods, and functions for preventing incorrect attachment.
Y
ou can connect ferrules that are attached to the twisted wires to the screwless clamping terminal
block. Y
ou can also connect the twisted wires or the solid wires to the screwless clamping terminal
block. If you connect the ferrules, all you need to do to connect the wires is to insert the ferrules into
the terminal holes.
WARNING
Make sure that the voltages and currents that are input to the slaves and Units are
within the specified ranges.
Inputting voltages or currents that are outside of the specified ranges may cause acci-
dents or fire.
Precautions for Safe Use
Use the correct wiring parts and tools when you wire the system. Otherwise, cables may be dis-
connected to cause short-circuit or wire breakage.
Applicable Wires
The wires that you can connect to the screwless clamping terminal block are twisted wires, solid wires,
and ferrules that are attached to the twisted wires. The following section describes the dimensions and
processed methods for applicable wires.
l
Dimensions of Wires Connected to the Terminal Block
The dimensions of wires that you can connect into the terminal holes of the screwless clamping
terminal block are as in the figure below.
Process the applicable wires that are specified in the following description to apply the dimensions.
1.6 mm max.(Terminals other than ground terminals)
2
.0 mm max.(Ground terminals)
2.4 mm max.(Terminals other than ground terminals)
2
.7 mm max.(Ground terminals)
l
Using Ferrules
If you use ferrules, attach the twisted wires to them.
Observe the application instructions for your ferrules for the wire stripping length when attaching
ferrules.
Always use plated one-pin ferrules. Do not use unplated ferrules or two-pin ferrules.
The applicable ferrules, wires, and crimping tools are listed in the following table.
5 Installation and Wiring
5-42
NX-series NX502 CPU Unit Hardware User's Manual (W629)
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