Instructions For Connecting Input Devices - Mitsubishi Electric MELSEC-F FX3G Series User Manual

FX Series Programmable Controllers
3G
User's Manual - Hardware Edition
3. Input sensitivity
The PLC input current and input sensitivity are shown in the following table.
When there is a series diode or resistance at the input contact or there is a parallel resistance or leakage
current at the input contact, wire the terminals in accordance with the following table.
Item
Input voltage
Input current
Input sensitivity current

10.2.2 Instructions for connecting input devices

1. In the case of no-voltage contact
The input current of this PLC is 7mA/24V DC. (5mA/24V DC in X010 or later)
Use input devices applicable to this minute current.
If no-voltage contacts (switches) for large current are used, contact failure may occur.
Input number
X000 to X007
X010 or more
<Example> Products of OMRON
Type
Microswitch
Proximity switch
2. In the case of input device with built-in series diode
The voltage drop of the series diode should be approx. 4V or less.
For example, when lead switches with a series LED are used, up to two switches can be connected in series.
Also make sure that the input current is over the input-sensing level while the switches are ON.
24V
S/S
PLC
(sink input)
0V
*1 In the case of a type only for sink input,
connect the device to the COM terminal.
→ For the instructions for connecting input devices, refer to Subsection 10.2.2.
X000 to X007
AC power supply type: 24V DC 10% DC power supply type: 20.4-28.8 V DC
7mA
ON 4.5mA or more
OFF 1.5mA or less
Input current
7mA/24V DC
5mA/24V DC
Model name
Models Z, V and D2RV
Model TL
LED
X
*1
10.2 24V DC input (Sink and source input type)
X010 to max input number of the main unit
5mA
3.5mA or more
1.5mA or less
Type
Operation switch Model A3P
Photoelectric switch Model E3S
0V
S/S
LED
PLC
X
(source input)
24V
10 Input Wiring Procedures
Model name
145
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