Mitsubishi Electric MELSEC-FX3S Series - Power Supply Line

K-15
3 Wiring
3.3 Power Supply Line
FX 3S /FX 3G /FX 3GC /FX 3U /FX 3UC PLC User's Manual - Analog Control Edition
FX3U-4AD-PNK-ADP (4-channel Resistance Thermometer 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 24 V DC power supply line of the PNK-ADP to the 24+ and 24- terminals of the terminal block.
3.3.1 To connect to the FX3S/FX3G/FX3U Series PLC
Caution regarding connection of the power supply line:
• Ground the " " terminal to a class-D grounding power supply line (100 Ω or less) together with the
grounding terminal of the PLC main unit.
• When using an external power supply, turn it ON at the same time with the main unit or earlier than the
main unit. When turning OFF the power, confirm the safety of the system, and then turn OFF the power of
the PLC (including special adapter) at the same time.
3.3.2 To connect to the FX3GC/FX3UC Series PLC
Example of wiring of FX3UC Series PLC
For example of wiring of FX
3GC Series PLC, refer to the following manual.
→ Refer to the FX
3GC Series User’s Manual - Hardware Edition
"Section 4.2 Example External Wiring".
Cautions regarding connection of the power supply line:
• For the 24 V DC power supply line, be sure to use the same power as the FX
3GC/FX3UC Series PLC.
• Ground the " " terminal to a class-D grounding power supply line (100 Ω or less) together with the
ground terminal of the PLC main unit.
24V DC
Class-D
grounding
Terminal
block
PNK-ADP FX 3S /FX 3G /FX 3U
Series PLC
(Main unit)
+5V
24-24+
1. To use an external power
Fuse
Class-D
grounding
Terminal
block
PNK-ADP FX 3S /FX 3G /FX 3U
Series PLC
(Main unit)
+5V
24-24+
0V24V
2. To use the 24 V DC power of the PLC
24V DC
Class-D
grounding
Terminal
block
PNK-ADP
GreenRed
Black
(Main unit)
Power
connector
24-24+
+5V
24-24+
Series PLC
FX
3UC
Fuse