Omron CJ - 08-2008 - Page 309

261
Wiring Section 5-3
PLC Input Unit Wiring
Example
Connect the positive terminals of the 24-VDC power supply to the Input Unit
common (COM) terminals.
Connect the negative terminal of the 24-VDC power supply to the Input Unit
common (COM) terminal.
External Display Device
Connection Example
The alarm output (replacement notification output) is an NC contact. There-
fore, wire the alarm output using an NC contact or other means to turn ON an
error indicator or LED display as shown in the following diagram.
Note 1. The OL display will also light if the PLC's power supply fails.
2. Separate the alarm output cables from power lines and high-voltage lines.
3. Do not apply a voltage or connect a load to the alarm output that exceeds
the rated voltage or load.
NC
NC
L1
L2/ N
CJ1W-PA205C
CJ1W-PA205C
PO
PO
WER
TES
TES
T
ALARM OUTPUT
DC30V, 50mA
NORMAL:ON
ALARM OFF
L
L
IN0
IN(N)
IN(N+1)
COM
CPU UnitCJ1W-PA205C
IN Unit
CJ1W-ID2**
24 VDC power supply
100 to 240 VAC
INPUT
IN0
IN(N)
IN(N+1)
COM
AC100-240V
INPUT
NC
NC
L1
L2/ N
CJ1W-PA205C
CJ1W-PA205C
PO
PO
WER
TES
TES
T
ALARM OUTPUT
DC30V, 50mA
NORMAL:ON
ALARM OFF
L
L
CJ1W-PA205C CPU Unit
IN Unit
CJ1W-ID2**
24 VDC power supply
AC100- 240V
INPUT
NC
NC
L1
L2/N
CJ1W-PA205C
CJ1W-PA205C
PO
PO
WER
TES
TES
T
ALARM OUTPUT
DC30V, 50mA
NORMAL:ON
ALARM OFF
L
L
OL
24 VDC power supply
Relay
(NC contact)
Power
supply