Mitsubishi Electric FX3U-128M series - 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)

3.4.2 Examples of 24 V DC input wiring [AC power type]
3.4.3 Examples of 24 V DC input wiring [DC power type]
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
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.
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.
L
N
S/S
0V
24V
X000
X001
X002
X003
L
N
S/S
0V
24V
X000
X001
X002
X003
1. Sink input type 2. Source input type
S/S
X000
S/S
X000
(
*
)(
*
)
100 to 240 V AC
Fuse
3-wire type
sensor
100 to 240 V AC
Fuse
3-wire type
sensor
(
*
)
Class D grounding
See section 3.3 for details.
[1] [1]
[2] [2]
[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)
X000
X001
X002
X003
3-wire type
sensor
Fuse
(
*
1)
(
*
1) (
*
1)
Class D grounding
See section 3.3 for details.
S/S
X000
X001
X002
X003
3-wire type
sensor
1. Sink input type 2. Source input type
S/S
X000
S/S
X000
[1] [1]
[2] [2]
[2]: Input/output extension block
(Common to both sink and source inputs)
[1]: Main unit, Input/output extension unit
(Common to both sink and source inputs)
S/S
Fuse
(
*
2)
(
*
2) (
*
2)
24 V DC24 V DC
Do not connect the (0V), (24V) terminals with others,
since they are not available.
(0V)
(24V)
(0V)
(24V)
Type
Model
name
Type Model name
Microswitch
Models Z, V
and D2RV
Operation
switch
Model A3P
Proximity
switch
Model TL
Photoelectric
switch
Model E3S
X
0V
LED
24V
S/S
Sink input
X
24V
LED
0V
S/S
Source input
X
24V
0V
S/S
Source input
Rp
Rb
X
0V
24V
S/S
Rp
Rb
Sink input
15 kΩ
or more
15 kΩ
or more
Rb
4Rp
15-Rp
(kΩ)
4) In the case of 2-wire proximity switch:
Use a two-wire proximity switch whose leakage current, , is
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.
3.4.5 Input specifications (100 V AC input type)
3.4.6 Examples of 100V AC input wiring
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 FX3U Series User's Manual - Hardware Edition.
3.5.1 Relay output specifications
Item Specification
Number of
input
points
FX2N-8EX-UA1/UL 8 points
FX3U-32MR/UA1 16 points
FX2N-48ER-UA1/UL 24 points
FX3U-64MR/UA1 32 points
Input connecting type
Refer to FX3U Series User's
Manual - Hardware Edition
Input form
Input signal voltage
100 to 120 V AC
+10 %, -15 % 50/60 Hz
Input impedance
Approx. 21 k/50 Hz
Approx. 18 k/60 Hz
Input signal current
4.7 mA/100 V AC 50 Hz
6.2 mA/110 V AC 60 Hz
(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
Input response time
Approx. 25 to 30 ms
(A high speed receiving is
improper)
Input signal form Contact input
Input circuit insulation Photocoupler insulation
Input operation display
LED on panel lights when
photocoupler is driven.
Ι
X
24V
0V
S/S
Source input
Rb
X
0V
24V
S/S
Rb
Sink input
2-wire
proximity
sensor
2-wire
proximity
sensor
Ι
Ι
Rb
6
Ι
-1.5
(kΩ)
Item Specification
Number
of output
points
FX2N-8ER
4 points (8 points) (
*
1)
FX3U-16MR,
FX2N-8EYR
8 points
FX3U-32MR/,
FX2N-32ER,
FX2N-16EYR
16 points
FX3U-48MR,
FX2N-48ER
24 points
FX3U-64MR/ 32 points
FX3U-80MR 40 points
FX3U-128MR/ES 64 points
Output connecting type
Refer to FX3U Series User's Manual
- Hardware Edition
Output form Relay
External power supply
30 V DC or less
240 V AC or less ("250 V AC or less"
if not a CE, UL, cUL compliant item)
Max. load
Resistance load
2 A/point (
*
2)
Inductive load 80 VA
Min. load 5 V DC, 2 mA (reference value)
Open circuit leakage current -
Response
time
OFFON Approx. 10 ms
ONOFF Approx. 10 ms
Output circuit insulation Mechanical insulation
Output operation display
LED on panel lights when power is
applied to relay coil.
*
1
*
1 Class D grounding See section 3.3 for details.
*
2 Do not take input signals from loads generating surge.
L
N
COM
X000
X001
X002
100 to 240 V AC
100 to 120 V AC
COM
X000
X001
MC
*
2
Fuse
Fuse
Fuse
[1]
[2]
[1]: Main unit, Input/output extension unit
(100 V AC input type)
[2]: Input extension block
(100 V AC input type)