Mitsubishi Electric MELSEC FX3U-485ADP-MB Hardware Manual page 6

Item Input specification(24V DC)
LED on panel turns ON when photocoupler is
Operation display
driven.
*1 Does not apply to FX -16MT/ .
3UC
*2 X000 to X017 use adjustable digital filter values.
When setting the input filter for X000 to X005 to 5µs or
capturing pulses of a 50 to 100kHz response frequency with a
high speed counter, wire the terminals as stated below.
- The wiring length should be 5m (16'4") or less.
- Connect a bleeder resistor of 1.5kΩ (1W or more) to the
input terminal, so that the sum of the load current of the
open collector transistor output on the connected device
and the input current of the main body is 20mA or more.
3.3.2 Handling of input terminal
1) FX - MT/D, FX - EX(-T)
3UC 2NC
Inputs turn ON when the input terminal and COM terminal are
electrically connected with a no-voltage contact or NPN open
collector transistor
2) FX - MT/DSS, FX - EX(-T)-DS
3UC 2NC
• sink input
Inputs turn ON when the 24V DC + terminal and COM
-
are connected, and the input terminal and 24V DC terminal are
electrically connected with a no-voltage contact or NPN open
collector transistor.
• source input
-
Inputs turn ON when the 24V DC terminal and COM
are connected, and the input terminal and 24V DC + terminal are
electrically connected with a no-voltage contact or PNP open
collector transistor.
Where indicates:0 to 2
3.3.3 Example of input wiring
1. Examples of input wiring (FX - MT/D)
3UC
Breaker, Circuit protector,
Fuse, etc.
24V DC
Fuse
FX -
3UC
MT/D +
-
Class D
grounding
COM
COM
X000
X001
X002
FX -
2NC
EX(-T) +
-
COM
COM
X000
*1 The grounding resistance should be 100Ω or less.
2. Examples of sink input wiring (FX
Breaker, Circuit protector,
Fuse, etc.
24V DC
FX -
3UC
MT/DSS +
-
*2
COM0
*2
COM0
X000
X001
X002
FX -
2NC
EX(-T)-DS
COM0
COM0
terminal
X000
*1 The grounding resistance should be 100Ω or less.
terminal
*2 In FX -64MT/DSS or FX -96MT/DSS units, the COM0,
3UC 3UC
COM1 and COM2 terminals are not connected internally. Wire
the COM0, COM1 and COM2 terminals respectively.
3. Examples of source input wiring (FX
Breaker, Circuit protector,
Fuse, etc.
24V DC
FX -
3UC
MT/DSS +
-
*2
COM0
*2
COM0
*1
X000
X001
X002
Three
FX -
wire 2NC
EX(-T)-DS
sensor COM0
NPN
COM0
X000
*1 The grounding resistance should be 100Ω or less.
*2 In FX 3UC -64MT/DSS or FX 3UC -96MT/DSS units, the COM0,
COM1 and COM2 terminals are not connected internally. Wire
the COM0, COM1 and COM2 terminals respectively.
- MT/DSS) 3.4 Output specifications and example of external
3UC
wiring
→For more details, refer to the FX
Fuse
3.4.1 Transistor output specifications
Item
Class D
grounding *1
Number of output points
Three
wire
sensor
Output connecting type
NPN
FX
FX
FX
Output form
DSS
FX
-DSS
External power supply
Main
Resis-
units
tance
- MT/DSS)
3UC load
FX
(-DSS)
Max.
load
Fuse
Main
Induc-
units
tive
load
FX
(-DSS)
Class D
Open circuit leakage current
grounding *1
Main
Three
units
OFF→
wire
sensor ON
PNP
FX
Resp
(-DSS)
onse
time
Main
units
ON→
OFF
FX
(-DSS)
Circuit insulation
Display of output operation
*1 When using an instruction related to pulse train output or
positioning, make sure to set the load current to 10 to 100mA
(5 to 24V DC).
Series User's Manual -
3UC
Hardware Edition
Output specification
(Transistor)
FX -16MT/D(SS) 8 points
3UC
FX -32MT/D(SS) 16 points
3UC
FX -64MT/D(SS) 32 points
3UC
FX -96MT/D(SS) 48 points
3UC
FX -16EYT(-DSS) 16 points
2NC
FX -32EYT(-DSS) 32 points
2NC
connector
- MT/D
3UC
Sink
- EYT
2NC
3UC - MT/
Source
- EYT
2NC
5 to 30V DC
Y000 to
0.3A/point
Y003
Make sure that the
total load current
Y004 or
0.1A/point of 8 resistance
more
load points is 0.8A
or less.
- EYT
2NC
0.1A/point
Y000 to 7.2W/point Make sure that the
Y003 (24V DC) total load of 16
inductive load
Y004 or 2.4W/point
points is 38.4W/
more (24V DC)
24V DC or less.
- EYT
2NC
2.4W/point (24V DC)
0.1mA or less/30V DC
5µs or less/10mA or more
Y000 to
*1
Y002
(5 to 24V DC)
0.2ms or less/100mA or more
Y003
or more *2
(at 24V DC)
2NC - EYT 0.2ms or less/100mA or more
(at 24V DC)
5µs or less/10mA or more
Y000 to
*1
Y002
(5 to 24V DC)
0.2ms or less/100mA or more
Y003
or more *2
(at 24V DC)
2NC - EYT 0.2ms or less/100mA or more
(at 24V DC)
Photocoupler insulation
LED on panel turns ON when
photocoupler is driven.
*2 The transistor OFF time is longer under lighter loads.
For example, under a load of 24V DC 40mA, the response time
is approx. 0.3ms. When response performance is required
under light loads, provide a dummy resistor to increase the load
current.
3.4.2 Handling of transistor output circuit
Output terminal:
The main unit and FX input/output extension block have 16
2NC
transistor output points per common.
Two COM or +V terminals connected to each other inside the
PLC are provided for outputs.
Connect two COM or +V terminals outside the PLC so that the
load applied to each COM or +V terminal is smaller.
Where indicates:1 to 3
Where indicates:0 to 2
Output current
The ON voltage of the output transistor is approx. 1.5V. When
driving a semiconductor element, carefully check the input voltage
characteristics of the applied element.
3.4.3 Example of transistor output wiring
1. Examples of sink output wiring
FX - MT/D
3UC
FX - EYT
2NC
COM1 COM1 Y000 Y001 Y002
Load Load Load
Emergency
stop
24V
DC
Fuse
2. Examples of source output wiring
FX - MT/DSS
3UC
FX - EYT-DSS
2NC
+ + Y000 Y001 Y002
V0 V0
Load Load Load
Emergency
stop
24V
Fuse
DC