Instruction Manual

2-9

IM MW100-01E

Installation and Wiring

App

Index

2.4 Connecting Signal Wires

General Precautions When Wiring the Input/Output Signal Wires

WARNING

• To prevent the possibility of electric shock when wiring, confirm that the power

supply source and signal source are turned OFF. After making the connections,

secure the terminal cover and do not touch the terminals with your hands.

•

For signal wires on which voltage exceeding 30 VAC / 60 VDC is applied relative

to the ground potential or between signals, use reinforced (double) insulation

wires. For all other signal wires, use basic insulation wires. For the withstand

voltage of insulation wires, see the table below.

Applied Voltage (Vrms or VDC) Basic Insulation Double (reinforced) insulation

30 (60 VDC) to 100 620 Vrms 1000 Vrms

101 to 150 840 Vrms 1400 Vrms

151 to 300 1390 Vrms 2300 Vrms

301 to 600 2210 Vrms 3700 Vrms

• To avoid electric shock when removing the terminal plate or block and wiring the

terminals, attach the terminal block or plate to the input output module before

inputting or outputting signals. Electric shock or fire can result if signals are

applied to the terminals if the terminal block is removed from the input/output

modules.

•

When wiring to screw terminals, use round, insulation coated crimp-on lugs on

the terminals (4 mm screws on the screw terminal block, and 3 mm screws on

the screw terminals and screw terminal plate) that do not come out when loose.

• To prevent fire, use signal wires of the following temperature ratings.

Module Type Temp. Rating

Screw terminal block 75°C

Universal input module, DCV/TC/DI input module, 4-wire RTD 80°C

resistance input module, Strain input module, Pulse input module,

Digital input module, Digital output module

Analog output module, PWM output module 85°C