3.4.4
Relay output specifications
→
For more details, refer to the FX
3UC
Series User's Manual -
Hardware Edition
3.4.5
Handling of relay output circuit
Output terminal:
The FX
2NC
-16EYR-T(-DS) has 8 relay output points per common.
Two COM terminals connected to each other inside the PLC are
provided for outputs.
Connect two COM terminals outside the PLC so that the load
applied to each COM terminal is smaller.
Where indicates:1 or 2
3.4.6
Example of relay output wiring
3.5
Cautions in input and output wiring
3.5.1
Instructions for input devices
The input current of this PLC is 5 to 7mA/24V DC. Use input devices
applicable to this minute current. If switches for larger current are
being used, contact failure may occur.
→
For more details, refer to FX
3UC
Series User's Manual
- Hardware Edition
1) In the case of input devices with built-in series diodes:
The voltage drop of the series diode should be approx. 4V 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.
(ex.) Lead switches with a series LED
2) In the case of input device with built-in parallel resistance:
Use a device with a parallel resistance of 15 k
Ω
or more. When
the resistance is less than 15 k
Ω
, connect a bleeder resistor.
3) In the case of 2-wire proximity switch:
Use a two-wire proximity switch whose leakage current is 1.5mA
or less when the switch is off. When the current is 1.5mA or more,
connect a bleeder resistor.
3.5.2
Cautions on transistor output wiring
→
For more details, refer to FX
3UC
Series User's Manual
- Hardware Edition
1) Protection circuit for load short-circuits
A short-circuit at a load connected to an output terminal could
cause burnout at the output element or the PC board. To prevent
this, a protection fuse should be included at the output.
Use a load power supply capacity that is two times or more the
total rated capacity of the fuses connected to the load circuit.
2) Contact protection circuit for inductive loads
When an inductive load is connected, connect a diode (for
commutation) in parallel with the load as necessary.
The diode (for commutation) must comply with the following
specifications.
3) Interlock
Loads, such as contactors for normal and reverse rotations, that
must not be turned on simultaneously should have an interlock in
the PLC program and an external interlock.
Item
Output specification (Relay)
Number of output points
FX
2NC
-16EYR-T(-DS) 16
points
Output connecting type
Terminal block
External power supply
30V DC or less or 240V AC or less
(250V AC or less when the unit
does not comply with CE, UL or
cUL standards)
Max. load
Resistance load
2A/point
Make sure that the total
load current of 8
resistance load points is
0.8A or less.
Inductive load
80VA
→
For the product life of relay
contacts, refer to the
FX
3UC
Series User's Manual
- Hardware Edition.
Minimum load
5V DC, 2 mA (reference value)
Open circuit leakage current
-
Response
time
OFF
→
ON
Approx. 10 ms
ON
→
OFF
Approx. 10 ms
Circuit insulation
Mechanical insulation
Display of output operation
LED on panel lights when power is
applied to relay coil.
COM1
COM1
Y000
Y001
Y002
FX
2NC
-16EYR-T
(-DS)
100V
AC
Fuse
Load
Load
Load
Emergency
stop
Notes
•
The derating curve below shows the simultaneous ON ratio of
available PLC inputs or outputs with respect to the ambient
temperature. Use the PLC within the simultaneous input or
output ON ratio range shown in the figure.
Reverse voltage
5 to 10 times of the load voltage
Forward current
Load current or more
Derating curve
simultaneous ON ratio
80%
55°C Ambient temperature
applicable
20%
45°C
When extension blocks/
units are connected
Supply voltage:24V DC
40°C
60%
65%
When only the main unit
is used (without
extension blocks/units)
3.5.3
Cautions on relay output wiring
→
For more details, refer to FX
3UC
Series User's Manual
- Hardware Edition
1) Protection circuit for load short-circuits
A short-circuit at a load connected to an output terminal could
cause burnout at the output element or the PC board. To prevent
this, a protection fuse should be included at the output.
2) Protection circuit of contact when inductive load is used
An internal protection circuit for the relays is not provided for the
relay output circuit in the extension block. It is recommended to
use inductive loads with built-in protection circuits. When using
loads without built-in protection circuits, insert an external contact
protection circuit, etc. to reduce noise and extend the product life.
a) DC circuit
Connect a diode in parallel with the load.
Use a diode (for commutat ion) having the following
specifications.
b) AC circuit
Connect the surge absorber (combined CR components such
as a surge killer and spark killer, etc.) parallel to the load.
Select the rated voltage of the surge absorber suitable to the
output used. Refer to the table below for other specifications.
3) Interlock
Loads, such as contactors for normal and reverse rotations, that
must not be turned on simultaneously should have an interlock in
the PLC program and an external interlock.
4) Common mode
Use output contacts of the PLC in the common mode.
4.
Terminal Layout (Input/output connector)
4.1
Main units
4.1.1
FX
3UC
-
MT/D
The I/O wiring is different in the FX
3UC
-
MT/DSS. Refer to
Sections 3.3 and 3.4 for the details.
4.1.2
FX
3UC
-
MT/DSS
The I/O wiring is different in the FX
3UC
-
MT/D. Refer to Sections
3.3 and 3.4 for the details.
Reverse voltage
5 to 10 times of the load voltage
Forward current
Load current or more
Electrostatic capacity
Approx. 0.1
µ
F
Resistance value
Approx. 100 to 200
Ω
FX
3UC
-16MT/D
FX
3UC
-32MT/D
X7 X17
X6 X16
X5 X15
X4 X14
X3 X13
X2 X12
X1 X11
X0 X10
x
x
IN
Y7 Y17
Y6 Y16
Y5 Y15
Y4 Y14
Y3 Y13
Y2 Y12
Y1 Y11
Y0 Y10
x
x
OUT
Notch
IN
Y7
x
Y6
x
Y5
x
Y4
x
Y3
x
Y2
x
Y1
x
Y0
x
x
x
OUT
Notch
X7
X6
X5
X4
X3
X2
X1
X0
x
x
x
x
x
x
x
x
x
x
COM COM
COM COM
COM1 COM1
COM1 COM1
FX
3UC
-64MT/D
FX
3UC
-96MT/D
FX
3UC
-16MT/DSS
FX
3UC
-32MT/DSS
FX
3UC
-64MT/DSS
X27 X37
X26 X36
X25 X35
X24 X34
X23 X33
X22 X32
X21 X31
X20 X30
x
x
Y27 Y37
Y26 Y36
Y25 Y35
Y24 Y34
Y23 Y33
Y22 Y32
Y21 Y31
Y20 Y30
x
x
COM
X7 X17
X6 X16
X5 X15
X4 X14
X3 X13
X2 X12
X1 X11
X0 X10
x
x
Y7 Y17
Y6 Y16
Y5 Y15
Y4 Y14
Y3 Y13
Y2 Y12
Y1 Y11
Y0 Y10
x
x
COM1 COM1
COM
COM COM
COM2 COM2
IN
OUT
IN
OUT
Notch
X27 X37
X26 X36
X25 X35
X24 X34
X23 X33
X22 X32
X21 X31
X20 X30
x
x
Y27 Y37
Y26 Y36
Y25 Y35
Y24 Y34
Y23 Y33
Y22 Y32
Y21 Y31
Y20 Y30
x
x
COM
X7 X17
X6 X16
X5 X15
X4 X14
X3 X13
X2 X12
X1 X11
X0 X10
x
x
Y7 Y17
Y6 Y16
Y5 Y15
Y4 Y14
Y3 Y13
Y2 Y12
Y1 Y11
Y0 Y10
x
x
X47 X57
X46 X56
X45 X55
X44 X54
X43 X53
X42 X52
X41 X51
X40 X50
x
x
Y47 Y57
Y46 Y56
Y45 Y55
Y44 Y54
Y43 Y53
Y42 Y52
Y41 Y51
Y40 Y50
x
x
COM1 COM1
COM2 COM2
COM
COM COM
COMCOM
COM3 COM3
IN
OUT
IN
OUT
Notch
IN
OUT
Notch
X0
X1
X2
X3
X4
X5
X6
X7
x
x
x
x
x
x
x
x
x
x
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
+V0
x
+V0
x
x
x
x
x
x
x
x
x
COM0
COM0
IN
OUT
Notch
X0
X1
X2
X3
X4
X5
X6
X7
x
x
X10
X11
X12
X13
X14
X15
X16
X17
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
+V0
x
+V0
x
Y10
Y11
Y12
Y13
Y14
Y15
Y16
Y17
COM0 COM0
IN
OUT
Notch
x
X10
X11
X12
X13
X14
X15
X16
X17
X0
X1
X2
X3
X4
X5
X6
X7
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
+V0
x
+V0
x
Y10
Y11
Y12
Y13
Y14
Y15
Y16
Y17
X20
X21
X22
X23
X24
X25
X26
X27
x
x
X30
X31
X32
X33
X34
X35
X36
X37
Y20
Y21
Y22
Y23
Y24
Y25
Y26
Y27
+V1
x
+V1
x
Y30
Y31
Y32
Y33
Y34
Y35
Y36
Y37
COM1
COM0 COM0
COM1
x
IN
OUT
IN
OUT
Notch
