Omron CJ1W-SCU22, Руководство по эксплуатации, Страница: 113 / 478

3-3
3 Installation and Wiring
CJ-series Serial Communications Units Operation Manual for NJ-series CPU Unit(W494)
3-1 In
stallin
g Serial Co
mm
u
n
icat
ion
s
Unit
s
3
3-1-3 U
nit H
andling Precau
tions
Precautions for Safe Use
If the sliders are not locked properly, the Serial Communications Units may not function correctly.
To remove the Unit, move the sliders to the release position and then pull the Units gently apart.
• Always turn OFF the NJ-series before you mount or remove a Serial Communications Unit or you
connect or disconnect cables to/from the Serial Communications Unit.
• Place the port connecting cables in a different duct from those for high-voltage lines or power lines to
prevent the effects of electrical noise from these lines.
• Prevent wire clippings, cutting chips or other materials from getting inside the Unit. They could cause
scorching, failure, and malfunction. Pay particular attention to this during installation and take mea-
sures such as covering with a cover.
• If the Unit was shipped from the factory with the dust protection label on top of the unit, be sure to
remove that label before switching ON the power. The label prevents heat dissipation and could
cause a malfunction.
• If a serial port is not used, leave the port cover on the port to prevent the entrance of dust.
3-1-3 Unit Handling Precautions
2
ON
4
TERM
RD2 SD2
RDY
NO.
UNIT
ERH
OFF
WIRE
01
23
4567
8
9A
BCD EF
ERC RUN
SCU41
RD1
TER1
SD1
PORT1
(RS422
/485)
PORT2
Remove label after wiring.
Port cover