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B-14
3 Wiring
3.3 Examples of Power Supply Circuit
FX
3G
/FX
3U
/FX
3UC
PLC User's Manual - Analog Control Edition
FX3U-4AD/FX3UC-4AD (4-channel Analog Input)
3.3 Examples of Power Supply Circuit
3.3.1 FX3U-4AD
Below are shown examples of circuits for using the 24V DC service power supply of the FX3G/FX3U Series
PLC.
1) Sink input [- common] wiring
2) Source input [+ common] wiring
Class-D
grounding
L N
FX
3G
/FX
3U
Series PLC
(main unit)
24+ 24-S/S 0V 24V
+15V
-15V
FX
3U
-4AD
AC power
100 to 240 V
Connect the "S/S" terminal of the main unit to the "24V" terminal.
Class-D
grounding
L N
(main unit)
24+ 24-S/S 0V 24V
+15V
-15V
FX
3U
-4AD
AC power
100 to 240 V
Connect the "S/S" terminal of the main unit to the "0V" terminal.
FX
3G
/FX
3U
Series PLC