Examples Of 24 V Dc Input Wiring [Ac Power Type]; Examples Of 24 V Dc Input Wiring [Dc Power Type]; Instructions For Connecting Input Devices; Input Specifications (100 V Ac Input Type) - Mitsubishi Electric FX3U-128M series Hardware Manual

3.4.2

Examples of 24 V DC input wiring [AC power type]

1. Sink input type 2. Source input type
[1] [1]
Fuse Fuse
L L
( * ) ( * )
N N
100 to 240 V AC 100 to 240 V AC
S/S S/S
0V 0V
24V 24V
X000 X000
X001 X001
3-wire type 3-wire type
X002 X002
sensor
sensor
X003 X003
[2] [2]
S/S S/S
X000 X000
( * ) Class D grounding
See section 3.3 for details.
[1]: Main unit, Input/output extension unit
(Common to both sink and source inputs)
[2]: Input/output extension block
(Common to both sink and source inputs)
3.4.3

Examples of 24 V DC input wiring [DC power type]

1. Sink input type 2. Source input type
[1] [1]
Fuse Fuse
( * 1) ( * 1)
24 V DC 24 V DC
S/S S/S
(0V) (0V)
* *
( 2) ( 2)
(24V) (24V)
X000 X000
X001 X001
3-wire type 3-wire type
X002 X002
sensor sensor
X003 X003
[2] [2]
S/S S/S
X000 X000
( * 1) Class D grounding
See section 3.3 for details.
( * 2) Do not connect the (0V), (24V) terminals with others,
since they are not available.
[1]: Main unit, Input/output extension unit
(Common to both sink and source inputs)
[2]: Input/output extension block
(Common to both sink and source inputs)
3.4.4

Instructions for connecting input devices

1) In the case of no-voltage contact:
The input current of this PLC is 5 to 7 mA/24 V DC.
Use input devices applicable to this minute current.
If no-voltage contacts (switches) for large current are used,
contact failure may occur.
<Example> Products of OMRON
Model
Type Type Model name
name
Models Z, V Operation
Microswitch Model A3P
and D2RV switch
Proximity Photoelectric
Model TL Model E3S
switch switch
2) In the case of input device with built-in series diode:
The voltage drop of the series diode should be approx. 4 V or
less.
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.
Sink input Source input
24V 0V
S/S S/S
LED LED
X X
0V 24V
3) In the case of input device with built-in parallel resistance:
Use a device having a parallel resistance, Rp, of 15 kor more.
When the resistance is less than 15 k, connect a bleeder
resistance, Rb, obtained from the formula as shown in the
following figure.
4Rp
(kΩ)
Rb
15-Rp
Sink input Source input
24V 0V
S/S Rb S/S Rb
X X
15 kΩ 15 kΩ
Rp
or more or more
0V 24V
4) In the case of 2-wire proximity switch:
Use a two-wire proximity switch whose leakage current,
1.5 mA or less when the switch is off.
When the current is larger than 1.5 mA, connect a bleeder
resistance, Rb, obtained from formula as shown in the following
figure.
6
(kΩ)
Rb
Ι -1.5
Sink input Source input
24V
Rb
2-wire
S/S
proximity
sensor
X
Ι
0V
3.4.5

Input specifications (100 V AC input type)

Item
FX -8EX-UA1/UL 8 points
2N
Number of
FX 3U -32MR/UA1 16 points
input
FX 2N -48ER-UA1/UL 24 points
points
FX 3U -64MR/UA1 32 points
Input connecting type
Refer to FX
Manual - Hardware Edition
Input form
100 to 120 V AC
Input signal voltage
+10 %, -15 % 50/60 Hz
Approx. 21 k/50 Hz
Input impedance
Approx. 18 k/60 Hz
4.7 mA/100 V AC 50 Hz
6.2 mA/110 V AC 60 Hz
Input signal current
(70 % or less when turned on
simultaneously)
ON input sensitivity current 3.8 mA or more
OFF input sensitivity current 1.7 mA or less
Approx. 25 to 30 ms
Input response time (A high speed receiving is
improper)
Input signal form Contact input
Input circuit insulation Photocoupler insulation
LED on panel lights when
Input operation display
Rp
photocoupler is driven.
3.4.6 Examples of 100V AC input wiring
Ι
, is
[1]
L
N
COM
X000
X001
X002
0V
Rb
2-wire
S/S
proximity [2]
COM
sensor
X000
X
X001
Ι
*
1 Class D grounding See section 3.3 for details.
*
2 Do not take input signals from loads generating surge.
24V
[1]: Main unit, Input/output extension unit
(100 V AC input type)
[2]: Input extension block
(100 V AC input type)
Specification
3.5 Relay output specifications and example of
external wiring
As for the details of Instructions for connecting input devices, refer to
the following manual.
Refer to FX
3U
3U Series User's
3.5.1 Relay output specifications
Item
FX -8ER
2N
FX -16MR,
3U
FX -8EYR
2N
FX -32MR/,
3U
FX -32ER,
2N
Number
FX -16EYR
2N
of output
points
FX -48MR,
3U
FX -48ER
2N
FX -64MR/
3U
FX 3U -80MR
FX -128MR/ES 64 points
3U
Output connecting type
Output form
External power supply
Resistance load
Max. load
Inductive load
Min. load
Open circuit leakage current
OFF  ON
Response
time
ON OFF

Output circuit insulation
Output operation display
Fuse
*
1
100 to 240 V AC
Fuse
100 to 120 V AC
Fuse
*
2
MC
Series User's Manual - Hardware Edition.
Specification
*
4 points (8 points) ( 1)
8 points
16 points
24 points
32 points
40 points
Refer to FX Series User's Manual
3U
- Hardware Edition
Relay
30 V DC or less
240 V AC or less ("250 V AC or less"
if not a CE, UL, cUL compliant item)
*
2 A/point ( 2)
80 VA
5 V DC, 2 mA (reference value)
-
Approx. 10 ms
Approx. 10 ms
Mechanical insulation
LED on panel lights when power is
applied to relay coil.