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12 Output Wiring Procedures
113
FX3S Series Programmable Controllers
User's Manual - Hardware Edition
11
Built-in Analog
12
Output Wiring
13
Wiring for
Various Uses
14
Test Run,
Maintenance,
Troubleshooting
15
Other Extension
Units and
Options
16
Display Module
(FX
3S
-5DM)
17
Memory
Cassette
A
Special Devices
(M8000-, D8000-)
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Instruction List
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Discontinued
models
12.2 External Wiring of Transistor Output (Sink/Source) Type
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".
For the transistor output specifications, refer to Subsection 4.4.2.
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.
Load
Y
Fuse
DC power
supply
COM
+V
Load
Y
Fuse
DC power
supply
Load
Fuse
DC power
supply
Load
Fuse
DC power
supply
COM0
COM2
Sink output type
Y002
Y003
Y000
Main unit
+V0
+V2
Y002
Y003
Y000
Load
Fuse
DC power
supply
Load
Fuse
DC power
supply
Source output type
Main unit