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5 Installation and Wiring
NX-series Safety Control Unit User’s Manual (Z930)
5-3 Wiring the Terminals
5
5-3-1 Wiring to the Screwless Clamping Terminal Block
Securing Wires
It is necessary to secure wires to the screwless clamping terminal block depending on the wire types
that are used or the current flows on the wires.
The following table gives the necessity for securing wires.
Use the following procedure to secure the wires.
1 Prepare a cable tie.
A cable tie can be used with a width of 4 mm or less and a thickness of 1.5 mm or less.
Select a cable tie correctly for the operating environment.
2 Pass a cable tie through the hole for securing wires on the bottom of the screwless clamping ter-
minal block
Terminals Wire type
Classifica-
tion
Current
capacity
Ferrule
Twisted wires Solid wire
Plated Unplated Plated Unplated
All terminals
except ground
terminals
2 A max. No No No No No
Greater than 2 A
and 4 A or less
Not
possible
Yes Not
possible
Greater than 4 A Yes Not
possible
Ground termi-
nals
--- No No No No
1.5 mm or less
4.0 mm or less
Hole for securing wires
Cable tie