User`s manual

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MELSEC-A
4 SETUP AND PREPARATION BEFORE OPERATION
4.8.2 Wiring of module with external equipment
(1) AJ65VBTCU-68ADV
500k
CH.1 V+
CH.1 V-
NC
SLD
CH.8 V+
CH.8 V-
NC
SLD
FG1
CON1 CH.1
+15V
-15V
CON8 CH.8
Signal souce 0 to 10V
AG
GND
1
2
3
4
1
2
3
4
GND
500k
500k
500k
3
3
4
1 Shield
1 Shield
(2) AJ65VBTCU-68ADI
FG1
+15V
-15V
Signal souce 0 to 20mA
AG
GND
CH.8 I+
CH.8 I-
NC
SLD
CON8 CH.8
1
2
3
4
GND
CH.1 I+
CH.1 I-
NC
SLD
CON1 CH.1
1
2
3
4
500k
500k
250k
500k
500k
250k
1 Shield
1 Shield
4
2
2
1 Use a two-core twisted shield line for the power cable.
2 Indicates the AJ65VBTCU-68ADI input resistor.
3 When noise or ripple occurs with the external cable, connect a condenser with about 0.1 to
0.47µF (25V or higher voltage-resistant product) between the terminal V+ and V-.
4 Always perform grounding for FG1. When there is a lot of noise, it may be better ground AG
as well.
If the grounding wiring (grounding yes/no) is changed after the offset and gain are set,
perform the setting of the offset/gain values again.
POINT
• A/D conversion values are fluctuated by self-heating within approx. 30 minutes
after power is turned ON.
• Do not insert the one-touch connector plug for I/O of the one-touch connector
type/connector type compact remote I/O unit into the one-touch connector for
analog I/O accidentally.
Doing so can cause the module to be damaged.