External Display Device Connection Example - Omron CJ2 CPU UNIT User Manual

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5 Installation

External Display Device Connection Example

The alarm output (replacement notification output) is an NC contact. Therefore, wire the alarm out-
put using an NC contact or other means to turn ON an error indicator or LED display as shown in the
following diagram.
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.
5-26
CJ1W-PA205C
POWER
TEST
L
24-VDC power supply
Power
supply
Relay
OL
(NC contacts)
CJ2 CPU Unit Hardware User's Manual

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