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L-13
3 Wiring
3.3 Power Supply Line
FX
3G
/FX
3U
/FX
3UC
PLC User's Manual - Analog Control Edition
FX3U-4AD-TC-ADP (4-channel Thermocouple Data Input)
K
FX
3U
-4AD-PNK
-ADP
L
FX
3U
-4AD-TC
-ADP
M
PID Instruction
(FNC 88)
3.3 Power Supply Line
Connect the 24V DC power supply line of the TC-ADP to the 24+ and 24- terminals of the terminal block.
3.3.1 To connect to FX3G, FX3U Series PLC
Caution regarding connection of the power supply line:
• Ground the " " terminal to a class-D grounding power supply line (100Ω or less) together with the
grounding terminal of the PLC main unit.
• For the timing of power-on/off when using an external power supply, see the following manual of the PLC
to be connected.
→ Refer to the FX
3G Series User's Manual - Hardware Edition.
→ Refer to the FX
3U Series User's Manual - Hardware Edition.
3.3.2 To connect to the FX3UC Series PLC
Cautions regarding connection of the 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 a class-D grounding power supply line (100Ω or less) together with the
ground terminal of the PLC main unit.
24V DC
Class-D
grounding
Terminal
block
TC-ADP
FX
3G/FX3U
Series PLC
(Main unit)
+5V
24+24-
1. To use an external power
Class-D
grounding
Terminal
block
TC-ADP
+5V
24+24-
24V0V
2. To use the 24V DC power of the PLC
FX
3G/FX3U
Series PLC
(Main unit)
24V DC
Class-D
grounding
Terminal
block
TC-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-