4-9
Wiring the Terminals
This section describes how to wire the terminals on the System Units.
WARNING
Make sure that the voltages and currents that are input to the Units and slaves are
within the specified ranges. Inputting voltages or currents that are outside of the speci-
fied ranges may cause accidents or fire.
4-9-1
Wiring to the Screwless Clamping Terminal Blocks
This section describes how to connect wires to the screwless clamping terminal blocks, the installation
and removing methods, and functions for preventing incorrect attachment.
You 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.
Wiring Terminals
The terminals to be wired are as follows.
• Unit power supply terminals
• I/O power supply terminals
• SHLD terminal
• Functional ground terminals
Applicable Wires
You can connect twisted wires, solid wires, or ferrules attached to twisted wires to the screwless
clamping terminal block. The applicable wire dimensions and preparation methods are given below.
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.
4 Installation and Wiring
4-45
NX-series System Units User's Manual (W523)
4-9 Wiring the Terminals
4
4-9-1 Wiring to the Screwless Clamping Terminal Blocks
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