FX3U Series Programmable Controllers
User’s Manual - Hardware Edition
167
10 Input Wiring Procedures (Input Interruption and Pulse Catch)
10.2 24V DC Input Type (Common to Sink/Source Input)
1
Introduction
2
Features and
Part Names
3
Product
Introduction
4
Specifications
5
Version and
Peripheral
Devices
6
System
Configuration
7
Input/Output
Nos., Unit Nos.
8
Installation
9
Preparation and
Power Supply
Wiring
10
Input Wiring
10.2 24V DC Input Type (Common to Sink/Source Input)
The input specifications for the main unit, cautions in wiring the unit and examples of wiring are given below.
10.2.1 Input specifications (main unit)
The input numbers in the table indicate the main unit terminal numbers. "X010 or more" means the numbers
from X010 to the largest number that the main unit has.
(The input numbers of FX
3U-16M are X000 to X007.)
→ For details on sink/source input, refer to Subsection 10.1.1.
*2. FX3U-128M does not have DC power supply type.
*3. Do not connect with (0V) and (24V) terminals.
Item
Specifications
FX
3U
-16M
FX
3U
-32M
FX
3U
-48M
FX
3U
-64M
FX
3U
-80M
FX
3U
-128M
*2
Number of input points 8 points 16 points 24 points 32 points 40 points 64 points
Input connecting type
Fixed terminal
block
(M3 screw)
Removable terminal block (M3 screw)
Input form sink/source
Input signal voltage AC power type: 24V DC ±10% DC power type: 16.8 to 28.8V DC
Input
impedance
X000 to X005
3.9 kΩ
X006, X007
3.3 kΩ
X010 or more
− 4.3 kΩ
Input signal
current
X000 to X005
6 mA/24V DC
X006, X007
7 mA/24V DC
X010 or more
− 5 mA/24V DC
ON input
sensitivity
current
X000 to X005
3.5 mA or more
X006, X007
4.5 mA or more
X010 or more
− 3.5 mA or more
OFF input sensitivity
current
1.5 mA or less
Input response time Approx. 10 ms
Input signal form
No-voltage contact input
Sink input: NPN open collector transistor
Source input: PNP open collector transistor
Input circuit insulation Photocoupler insulation
Input operation display LED on panel lights when photocoupler is driven.
Input circuit configuration
*1 Input impedance
• AC power supply type
• DC power supply type
24V
N
L
100 to 240V AC
Fuse
X
S/S
* 1
0V
Source input wiring
24V
N
L
100 to 240V AC
Fuse
X
S/S
* 1
0V
Sink input wiring
(24V)
Fuse
X
S/S
*1
(0V)
Source input wiring
(24V)
24V
DC
Fuse
X
S/S
*1
(0V)
Sink input wiring
24V
DC
*3
*3