External Wiring Of Transistor Output (Sink/Source) Type; Transistor Output Sink And Source; Handling Of Transistor Output - Mitsubishi Electric MELSEQ FX3S Series User Manual

FX Series Programmable Controllers
3S
User's Manual - Hardware Edition
12.2

External Wiring of Transistor Output (Sink/Source) Type

This section explains "handling of transistor output", "external wiring precautions" and "example of external
wiring".

12.2.1 Transistor Output Sink and Source

There is a product of a sink output and source output in the transistor output of the main units.
• Sink output [-common]
Output to make load current flow into the output (Y) terminal is
called sink output.
• Source output [+common]
Output to make load current flow out of the output (Y) terminal is
called source output.

12.2.2 Handling of transistor output

1. Output terminals
One common terminal is used for 1 or 4 transistor output points.
Sink output
Connect each COM (number) terminal to the minus side of the load power supply.
The COM terminals are not connected internally.
Source output
Connect each +V (number) terminal to the plus side of the load power supply.
The +V terminals are not connected internally.
12.2 External Wiring of Transistor Output (Sink/Source) Type
→ For the transistor output specifications, refer to Subsection 4.4.2.
12 Output Wiring Procedures
Load
Y
COM
Fuse
DC power
supply
Load
Y
+V
Fuse
DC power
supply
Sink output type
Load
Y000
DC power
Fuse
supply
COM0
Load
Y002
Y003
DC power
Fuse supply
COM2
Main unit
Source output type
Load
Y000
DC power
Fuse
supply
+V0
Load
Y002
Y003
DC power
Fuse supply
+V2
Main unit
11
12
13
14
15
16
17
A
B
C
113