Handling Of Transistor Output - Mitsubishi Electric MELSEC-F FX3G Series User Manual

FX Series Programmable Controllers
3G
User's Manual - Hardware Edition

12.2.2 Handling of transistor output

1. Output terminals
One, 4 or 8 transistor output points are covered by one common terminal.
Sink output
Connect each COM
the load power supply.
The COM terminals are not connected internally.
Source output
Connect each +V
load power supply.
The +V terminals are not connected internally.
2. External power supply
For driving the load, use a smoothing power supply of 5-30 V DC that can output current two or more times
the rated current of the fuse connected to the load circuit.
3. Insulation of circuit
The internal circuit of the PLC and the output transistor are insulated with a photocoupler.
The common blocks are separated from one another.
4. Display of operation
Operation indicator LEDs are built into the main unit and output extension blocks, and turn ON when
photocouplers are actuated.
(number) terminal to the minus side of
(number) terminal to the plus side of the
12.2 External Wiring of Transistor Output (Sink/Source) Type
Load
DC power
Fuse
supply
Load
DC power
Fuse
supply
Load
DC power
Fuse
supply
Load
DC power
Fuse
supply
12 Output Wiring Procedures
Sink output type
Y 0
Y 1
COM1
Y 4
Y 5
COM2
PLC
Source output type
Y 0
Y 1
+V0
Y 4
Y 5
+V1
PLC
179
11
12
13
14
15
16
17
18
19
20