140
FX
3UC
Series Programmable Controllers
User’s Manual - Hardware Edition
5 Input Specifications and External wiring
5.2 24V DC Input Type
5.2.3
Handling of 24V DC input
1. Input terminals
When an input turns ON, the input indicator LED turns ON in the FX
3UC
-
MT/D, FX
3UC
-
MT/DSS or
input extension block for FX
0N
/FX
2N
/FX
2NC
. In the FX
3UC
-32MT-LT, the ON/OFF status can be checked with
the display module.
In the FX
3UC
-64MT/DSS and FX
3UC
-96MT/DSS, the COM0, COM1 and COM2 terminals are not connected
inside the PLC. Wire each COM terminal respectively.
In all models except the FX
3UC
-64MT/DSS and FX
3UC
-96MT/DSS, multiple input COM terminals are
connected inside the PLC.
One of the input terminals X000 to X017
*1
of the main unit can be used as a RUN input terminal by a
parameter setting.
*1.
X000 to X007 in the FX
3UC
-16M .
• Dedicated to sink input types only
When a no-voltage contact or NPN open collector
transistor output is connected between an input (X)
terminal and the COM terminal and the circuit is closed,
the input (X) turns on. Then, the input display LED
lights.
• Common to both sink and source input types
For sink input in the sink/source common input type, connect the 24V DC+ terminal and COM terminal
*1
,
and electrically connect an input terminal and 24V DC with a no-voltage contact or NPN open collector
transistor to turn ON the input. For source input, connect the 24V DC- terminal and COM terminal
*1
, and
electrically connect an input terminal and 24V DC with a no-voltage contact or PNP open collector
transistor to turn ON the input.
*1.
S/S terminal in FX
2N
Series extension blocks
*2.Input impedance
*2
24V DC
Fuse
X
X
COM
*2.Input impedance
*2
24V DC
Fuse
X
X
COM
Sink input wiring
*2.Input impedance
*2
Source input wiring
24V DC
Fuse
X
X
COM
Содержание FX3UC Series
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