Omron SYSMAC CP Series, User Manual

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17-11
17 Analog Input/Output Option Board
CP2E CPU Unit Software User’s Manual(W614)
17-5 A
n
alo
g
Inp
u
t Op
tio
n
Bo
ar
d
17
17-5-
3
Wir
ing
To prevent noise, 2-core shielded twisted-pair cable should be used.
Note 1 When an input is not being used, short the V IN, I IN and COM terminals.
2 Separate wiring from power lines (AC power supply lines, high-voltage lines, etc.)
3 When there is noise in the power supply line, install a noise filter on the input section and the power supply.
Precautions for Correct Use Precautions for Correct Use
When connecting the analog option board to an outside analog device, either ground the 0 V
side of the PLC
’ s external power supply or do not ground the PLC ’ s external power supply at all.
Otherwise the PLC ’ s external power supply may be shorted depending on the connection meth-
ods of the outside analog device. DO NOT ground the 24 V side of the PLC ’ s external power
supply, as shown in the following diagram.
Wiring for Analog Inputs
V I N
COM
I I N
V I N
COM
I I N
Analog
de
v ice w ith
v oltage
o u tp u t
Analog
Inp
u t
Option
Board
+
−
+
−
Analog
de
v ice w ith
c u rrent
o u tp u t
Analog
Inp
u t
Option
Board
2-core shielded
t w isted-pair ca b le
2-core shielded
t w isted-pair ca b le
FG FG
24 V
0 V 0 V
N on-ins u lated DC po w er s u pply
0 V
Analog De v ice
FG
FG
T w isted-pair
ca b le
CPU Unit + Analog Option Board