E-12
3 Wiring
3.3 Power Supply Line
FX
3U
/FX
3UC
Series PLC User's Manual - Analog Control Edition
FX
3U
-4AD-PT-ADP (4-channel Platinum Resistance Thermometer Data Input)
3.3 Power Supply Line
Connect the 24V DC power supply line of PT-ADP to the 24+ and 24- terminals of the terminal block.
3.3.1 To connect to FX3U Series PLC
Caution regarding connection of power supply line:
• Ground the " " terminal to the class-D grounding power supply line (100Ω or less) together with the
ground terminal of the PLC main unit.
3.3.2 To Connect To The FX3UC Series PLC
Caution regarding connection of power supply line:
• For the 24V DC power supply line, be sure to use the same power as the FX
3UC Series PLC.
• Ground the " " terminal to the class-D grounding power supply line (100Ω or less) together with the
grounding terminal of the PLC main unit.
24V DC
Class-D
grounding
Terminal
block
PT-ADP
FX
3U
Series PLC
(Main unit)
+5V
24+24-
1. To use the external power
Class-D
grounding
Terminal
block
PT-ADP
FX
3U
Series PLC
(Main unit)
+5V
24+24-
24V0V
2. To use 24V DC power of PLC
24V DC
Class-D
grounding
Terminal
block
PT-ADP
GreenRedBlack
FX
3UC
Series PLC
(Main unit)
Power
connector
24+24-
24+24- 24+24-
Power
connector
Power
crossover
connector
RedBlack
FX
2NC
Series PLC
(Input extension
block)
+5V
24+24-