Wiring Cj-Series Basic I/O Units With Terminal Blocks - Omron CJ2 User Manual

AC100-240V
INPUT
L1
L2/N
ALARM OUTPUT
DC30V, 50mA
NORMAL:ON
ALARM OFF
NC
NC
Note The OL display will also light if the PLC's power supply fails.
Precautions for Safe Use
• Separate the alarm output cables from power lines and high-voltage lines.
• Do not apply a voltage or connect a load to the alarm output that exceeds the rated voltage or
load.
5-3-2

Wiring CJ-series Basic I/O Units with Terminal Blocks

Precautions for Wiring I/O Units
I/O Unit Specifications
Double-check the specifications for the I/O Units. In particular, do not apply a voltage that exceeds
the input voltage for Input Units or the maximum switching capacity for Output Units. Doing so may
result in breakdown, damage, or fire.
When the power supply has positive and negative terminals, be sure to wire them correctly.
Electric Wires
• The following wire gauges are recommended.
Terminal Block Connector
18-terminal
• The current capacity of electric wire depends on factors such as the ambient temperature and
insulation thickness as well as the gauge of the conductor.
Crimp Terminals
The terminals on the I/O Unit are M3, self-raising terminals with screws.
Precautions for Correct Use Precautions for Correct Use
• Use crimp terminals for wiring.
• Do not connect bare stranded wires directly to terminals.
• Tighten the terminal block screws to the torque of 0.5 N·m.
• Use crimp terminals (M3) having the dimensions shown below.
6.2 mm max.
CJ2 CPU Unit Hardware User's Manual
CJ1W-PA205C
POWER
TEST
L
24-VDC power supply
Wire Size
AWG 22 to 18 (0.32 to 0.82 mm
6.2 mm max.
Power
supply
Relay
OL
(NC contacts)
2
)
5 Installation
5
5-25