Input Specifications And External Wiring; Instructions For Connecting Input Devices; Relay Output Specifications - Mitsubishi MELSEC-F FX 3U Series Hardware Manual

3.4

Input specifications and external wiring

→
Refer to FX Series User's Manual - Hardware Edition.
3U
Input specifications
Item Specification
FX -16M 8 points
3U
FX -32M 16 points
3U
Number of
input FX -48M 24 points
3U
points
FX -64M 32 points
3U
FX -80M 40 points
3U
Input connecting type
Removable terminal block (M3 screw)*
Input form Sink/source
24V DC +10%, -10%
Input signal voltage
X000 to
3.9kΩ
X005
Input
X006, X007 3.3kΩ
impedance
X010 or 4.3kΩ
more (Does not apply to FX -16M .)
3U
X000 to
6mA/DC24V
X005
Input signal
X006, X007 7mA/DC24V
current
X010 or 5mA/DC24V
more (Does not apply to FX -16M .)
3U
X000 to
3.5 mA or more
X005
ON input
sensitivity X006, X007 4.5 mA or more
current
X010 or 3.5 mA or more
more (Does not apply to FX -16M .)
3U
OFF input sensitivity
1.5 mA or less
current
Input response time Approx. 10 ms
• Sink input:
No-voltage contact input
NPN open collector transistor
Input signal form
• Source input:
No-voltage contact input
PNP open collector transistor
Input circuit insulation Photocoupler insulation
LED on panel lights when photocoupler
Input operation display
is driven.
*1 FX -16M cannot be installed/removed
3U
3.4.1 Examples of input wiring
(sink input)PLC (source input)PLC
Fuse Fuse
L L
*
N N
100 to 240V AC 100 to 240V AC
S/S S/S
0V 0V
24V 24V
X000 X000
1
X001 X001
3-wire type
X002 X002
sencer
X003 X003
*Class D grounding
See section 3.3 for details.
3.4.2

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 VDC.
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
name
Models Z, V Operation
Microswitch
and D2RV switch
Proximity Photoelectric
Model TL
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.
(sink input)PLC (source input)PLC
24V 0V
S/S S/S
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 kΩ or more.
When the resistance is less than 15 kΩ, connect a bleeder
resistance, Rb, obtained from the formula as shown in the
following figure.
*
4Rp
Rb (kΩ)
15-Rp
(sink input)PLC
24V
S/S Rb
3-wire type X
sencer
15 kΩ
Rp
or more
0V
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 1.5 mA or more, connect a bleeder
resistance, Rb, obtained from formula as shown in the following
figure.
6
(kΩ)
Rb
I -1.5
Model name
(sink input)PLC
Model A3P
24V
Rb
2-wire
Model E3S S/S
proximity
sensor
X
I
0V
3.5 Output specifications and example of external
wiring
LED
→ Refer to FX Series User's Manual - Hardware Edition.
3U
3.5.1

Relay output specifications

Item
FX
3U
FX
Number 3U
of
FX 3U
output
points
FX
3U
(source input)PLC
FX
3U
0V
Output connecting type
S/S Rb
Output form
X
External power supply
15 kΩ
Rp
or more
24V
Resistance load
Max.
, is
I
load
Inductive load
Min. load
Open circuit leakage current
(source input)PLC
→
OFF
Respon
se time
0V →
ON
Rb
2-wire
Circuit insulation
S/S
proximity
sensor
Display of output operation
X
I
*1 FX -16M
3U
Number of output points per common terminal
• On FX
24V -16M , one common terminal is used for 1 output point.
3U
• On models other than FX
for 4 or 8 output points.
3.5.2 Life of relay output contact
The standard life of the contact used for Inductive loads, such as
contactors and solenoid valves, is 500 thousand times at 20 VA.
The following table shows the approximate life of the relay based on
the results of our life test.
Load capacity
0.2A/100V AC
20VA
0.1A/200V AC
0.35A/100V AC
35VA
0.17A/200V AC
0.8A/100V AC
80VA
0.4A/200V AC
Specification
-16MR/ 8 points
-32MR/ 16 points
-48MR/ 24 points
-64MR/ 32 points
-80MR/ 40 points
Removable terminal block (M3
1
screw)*
Relay
30 VDC or less
240 VAC or less ("250 VAC or less"
if not a CE, UL, cUL compliant item)
The total load current of
resistance loads per
common terminal should be
the following value or less.
• 1 output point/common
2 A
/point terminal: 2 A
• 4 output point/common
terminal: 8 A
• 8 output point/common
terminal: 8 A
80VA
5 V DC, 2 mA (reference value)
-
ON Approx. 10 ms
OFF Approx. 10 ms
Mechanical insulation
LED lights when power is applied to
relay coil.
cannot be installed/removed
-16M , 1 common terminal is used
3U
Example of applicable
Contact
loads (magnetic
life
switches made by us)
3 million
S-K10 to S-K95
times
1 million
S-K100 to S-K150
times
2 hundred
thousand S-K180,S-K400
times