Mitsubishi Electric MELSEC FX3U-232ADP-MB User manual

FX3U SERIES PROGRAMMABLE
CONTROLLERS
HARDWARE MANUAL
This manual describes the part names, dimensions, mounting,
cabling and specifications for the product. This manual is extracted
from FX3U Series User's Manual - Hardware Edition. Refer to FX3U
Series User's Manual - Hardware Edition for more details. Before
use, read this manual and manuals of relevant products fully to
acquire proficiency in the handling and operating the product. Make
sure to learn all the product information, safety information, and
precautions.
And, store this manual in a safe place so that you can take it out and
read it whenever necessary. Always forward it to the end user.
Registration
The company name and the product name to be described in this
manual are the registered trademarks or trademarks of each
company.
Effective May 2013
Specifications are subject to change without notice.
© 2013 Mitsubishi Electric Corporation
Safety Precaution (Read these precautions before use.)
This manual classifies the safety precautions into two categories:
and .
Depending on the circumstances, procedures indicated by
may also cause severe injury.
It is important to follow all precautions for personal safety.
Manual Number JY997D50301
Revision A
Date May 2013
Indicates that incorrect handling may cause
hazardous conditions, resulting in death or
severe injury.
Indicates that incorrect handling may cause
hazardous conditions, resulting in medium or
slight personal injury or physical damage.
STARTUP AND
MAINTENANCE
PRECAUTIONS
Do not touch any terminal while the PLC's power is on.
Doing so may cause electric shock or malfunctions.
Before cleaning or retightening terminals, cut off all phases of
the power supply externally.
Failure to do so may cause electric shock.
Before modifying or disrupting the program in operation or
running the PLC, carefully read through this manual and the
associated manuals and ensure the safety of the operation.
An operation error may damage the machinery or cause
accidents.
Do not change the program in the PLC from two or more
peripheral equipment devices at the same time. (i.e. from a
programming tool and a GOT)
Doing so may cause destruction or malfunction of the PLC
program.
Use the battery for memory backup correctly in FX3U Series
User's Manual - Hardware Edition.
- Use the battery only for the specified purpose.
- Connect the battery correctly.
- Do not charge, disassemble, heat, put in fire, short-circuit,
connect reversely, weld, swallow or burn the battery, or apply
excessive forces (vibration, impact, drop, etc.) to the battery.
- Do not store or use the battery at high temperatures or
expose to direct sunlight.
- Do not expose to water, bring near fire or touch liquid
leakage or other contents directly.
- Incorrect handling of the battery may cause heat excessive
generation, bursting, ignition, liquid leakage or deformation,
and lead to injury, fire or failures and malfunctions of facilities
and other equipment.
STARTUP AND
MAINTENANCE
PRECAUTIONS
Turn off the power to the PLC before attaching or detaching the
memory cassette. If the memory cassette is attached or
detached while the PLC's power is on, the data in the memory
may be destroyed, or the memory cassette may be damaged.
Do not disassemble or modify the PLC.
Doing so may cause fire, equipment failures, or malfunctions.
For repair, contact your local Mitsubishi Electric distributor.
Turn off the power to the PLC before connecting or
disconnecting any extension cable.
Failure to do so may cause equipment failures or malfunctions.
Turn off the power to the PLC before attaching or detaching the
following devices.
Failure to do so may cause equipment failures or malfunctions.
- Display module, peripheral devices, expansion boards, and
special adapters
- Connector conversion adapter, extension blocks, and FX
Series terminal blocks
- Battery and memory cassette
DISPOSAL
PRECAUTIONS
Please contact a certified electronic waste disposal company
for the environmentally safe recycling and disposal of your
device.
When disposing of batteries, separate them from other waste
according to local regulations.
(For details of the Battery Directive in EU countries, refer to
FX3U Series User's Manual - Hardware Edition.)
TRANSPORTATION
AND STORAGE
PRECAUTIONS
Before transporting the PLC, turn on the power to the PLC to
check that the BATT LED is off.
If the PLC is transported with the BATT LED on or the battery
exhausted, the battery-backed data may be unstable during
transportation.
STARTUP AND
MAINTENANCE
PRECAUTIONS
Associated manuals
Associated manuals
FX3U Series PLC (main unit) comes with this document (hardware
manual).
For a detailed explanation of the FX3U Series hardware and
information on instructions for PLC programming and special
extension unit/block, refer to the relevant documents.
Marine standard
Please consult with Mitsubishi Electric for the information on marine
standard practices and the corresponding types of equipment.
Certification of UL, cUL standards
FX3U series main units, FX3U series special adapters and FX2N
series input/output extension units/blocks supporting UL, cUL
standards are as follows:
UL, cUL file number: E95239
Models: MELSEC FX3U series manufactured
FX3U-MR/ES(-A) FX3U-MT/ES(-A)
FX3U-MT/ESS
Where  indicates: 16, 32, 48, 64, 80, 128
FX3U-MR/DS FX3U-MT/DS
FX3U-MT/DSS
Where  indicates: 16, 32, 48, 64, 80
FX3U-MR/UA1 FX3U-MS/ES
Where  indicates: 32, 64
FX3U-232ADP(-MB) FX3U-485ADP(-MB)
FX3U-4AD-ADP FX3U-4DA-ADP
FX3U-3A-ADP FX3U-4AD-PT-ADP
FX3U-4AD-PTW-ADP FX3U-4AD-PNK-ADP
FX3U-4AD-TC-ADP
FX3U-4HSX-ADP FX3U-2HSY-ADP
FX3U-CF-ADP FX3U-ENET-ADP
Models: MELSEC FX2N series manufactured
FX2N-ER-ES/UL FX2N-ET-ESS/UL
Where  indicates: 32, 48
FX2N-48ER-DS FX2N-48ET-DSS
FX2N-48ER-UA1/UL
FX2N-8ER-ES/UL FX2N-8EX-ES/UL
FX2N-8EYR-ES/UL FX2N-8EYR-S-ES/UL
FX2N-8EYT-ESS/UL FX2N-8EX-UA1/UL
FX2N-16EX-ES/UL FX2N-16EYR-ES/UL
FX2N-16EYT-ESS/UL FX2N-16EYS
Compliance with EC directive (CE Marking)
This document does not guarantee that a mechanical system
including this product will comply with the following standards.
Compliance to EMC directive and LVD directive of the entire
mechanical system should be checked by the user/manufacturer.
For more details please contact the local Mitsubishi Electric sales
site.
Requirement for Compliance with EMC directive
The following products have shown compliance through direct
testing (of the identified standards below) and design analysis
(through the creation of a technical construction file) to the European
Directive for Electromagnetic Compatibility (2004/108/EC) when
used as directed by the appropriate documentation.
Attention
This product is designed for use in industrial applications.
The PLC is a precision instrument. During transportation, avoid
impacts larger than those specified in Section 2.1. Failure to do
so may cause failures in the PLC.
After transportation, verify the operations of the PLC.
When transporting lithium batteries, follow required
transportation regulations.
(For details of the regulated products, refer to FX3U Series
User's Manual - Hardware Edition.)
How to obtain manuals
For the necessary product manuals or documents, consult with
your local Mitsubishi Electric representative.
Manual name Manual No. Description
FX3U Series
User's Manual
- Hardware Edition
JY997D16501
MODEL CODE:
09R516
Explains FX3U Series
PLC specification details
for I/O, wiring, installation,
and maintenance.
FX3S/FX3G/FX3GC/
FX3U/FX3UC Series
Programming Manual
- Basic & Applied
Instruction Edition
JY997D16601
MODEL CODE:
09R517
Describes PLC
programming for basic/
applied instructions STL/
SFC programming and
devices.
MELSEC-Q/L/F
Structured
Programming Manual
(Fundamentals)
SH-080782
MODEL CODE:
13JW06
Programming methods,
specifications, functions,
etc. required to create
structured programs.
FXCPU Structured
Programming Manual
[Device & Common]
JY997D26001
MODEL CODE:
09R925
Devices, parameters, etc.
provided in structured
projects of GX Works2.
FXCPU Structured
Programming Manual
[Basic & Applied
Instruction]
JY997D34701
MODEL CODE:
09R926
Sequence instructions
provided in structured
projects of GX Works2.
FXCPU Structured
Programming Manual
[Application
Functions]
JY997D34801
MODEL CODE:
09R927
Application functions
provided in structured
projects of GX Works2.
FX Series User’s
Manual - Data
Communication
Edition
JY997D16901
MODEL CODE:
09R715
Explains N:N link, parallel
link, computer link, no
protocol communication
by RS instructions/FX2N-
232IF.
FX3S/FX3G/FX3GC/
FX3U/FX3UC Series
User's Manual
- Analog Control
Edition
JY997D16701
MODEL CODE:
09R619
Describes specifications
for analog control and
programming methods for
FX 3S /FX 3G /FX 3GC /FX 3U /
FX 3UC Series PLC.
TRANSPORTATION
AND STORAGE
PRECAUTIONS FX3S/FX3G/FX3GC/
FX3U/FX3UC Series
User's Manual
- Positioning Control
Edition
JY997D16801
MODEL CODE:
09R620
Explains the specifications
for positioning control of
FX 3S /FX 3G /FX 3GC /FX 3U /
FX 3UC Series and
programming procedures
Manual name Manual No. Description
JY997D50301A
Side
B
Side
A
Side
BJAPANESE ENGLISH

Note
Manufactured by:
Mitsubishi Electric Corporation
2-7-3 Marunouchi, Chiyoda-ku, Tokyo, 100-8310 Japan
Manufactured at:
Mitsubishi Electric Corporation Himeji Works
840 Chiyoda-machi, Himeji, Hyogo, 670-8677 Japan
Authorized Representative in the European Community:
Mitsubishi Electric Europe B.V.
Gothaer Str. 8, 40880 Ratingen, Germany
Type: Programmable Controller (Open Type Equipment)
Models: MELSEC FX3U series manufactured
from May 1st, 2005 FX3U-MR/ES(-A)
Where  indicates: 16, 32, 48, 64, 80
FX3U-4HSX-ADP FX3U-2HSY-ADP
FX3U-FLROM-16 FX3U-FLROM-64L
FX3U-7DM
from June 1st, 2005 FX3U-232ADP FX3U-485ADP
FX3U-4AD-ADP FX3U-4DA-ADP
FX3U-4AD-PT-ADP FX3U-4AD-TC-ADP
FX3U-232-BD FX3U-422-BD
FX3U-485-BD FX3U-USB-BD
FX3U-FLROM-64 FX3U-CNV-BD
from November 1st, 2005 FX3U-MT/ES(-A)
FX3U-MT/ESS
Where  indicates: 16, 32, 48, 64, 80
from February 1st, 2006 FX 3U -128MR/ES(-A) FX 3U -128MT/ES(-A)
FX3U-128MT/ESS
FX 3U -  MR/DS FX 3U -  MT/DS
FX3U-MT/DSS
Where  indicates: 16, 32, 48, 64, 80
from April 1st, 2007 FX 3U -232ADP-MB FX 3U -485ADP-MB
from December 1st, 2007 FX3U-4AD-PTW-ADP
FX3U-4AD-PNK-ADP
from June 1st, 2009 FX3U-3A-ADP FX3U-CF-ADP
from August 1st, 2010 FX3U-8AV-BD
from September 1st, 2010 FX3U-MR/UA1 FX3U-MS/ES
Where  indicates: 32, 64
from May 1st, 2011 FX3U-FLROM-1M
from February 1st, 2012 FX3U-ENET-ADP
Models: MELSEC FX2N series manufactured
from July 1st, 1997 FX2N-ER-ES/UL FX2N-ET-ESS/UL
Where  indicates: 32, 48
FX2N-16EX-ES/UL FX2N-16EYR-ES/UL
FX2N-16EYT-ESS/UL
from April 1st, 1998 FX2N-48ER-DS FX2N-48ET-DSS
from August 1st, 1998 FX2N-48ER-UA1/UL
from August 1st, 2005 FX2N-8ER-ES/UL FX2N-8EX-ES/UL
FX2N-8EYR-ES/UL FX2N-8EYT-ESS/UL
from September 1st, 2010 FX2N-8EYR-S-ES/UL
For the products above, PLCs manufactured
before March 31st, 2002 are compliant with EN50081-2 (EN61000-
6-4) and EN50082-2
from April 1st, 2002 to April 30th, 2006 are compliant with EN50081-
2 (EN61000-6-4) and EN61131-2: 1994 +A11: 1996 +A12: 2000
after May 1st, 2006 are compliant with EN61131-2: 2007
Requirement for Compliance with LVD directive
The following products have shown compliance through direct
testing (of the identified standards below) and design analysis
(through the creation of a technical construction file) to the European
Directive for Low Voltage (2006/95/EC) when used as directed by
the appropriate documentation.
Type: Programmable Controller (Open Type Equipment)
Models: MELSEC FX3U series manufactured
from May 1st, 2005 FX3U-MR/ES(-A)
Where  indicates: 16, 32, 48, 64, 80
from November 1st, 2005 FX3U-MT/ES(-A)
FX3U-MT/ESS
Where  indicates: 16, 32, 48, 64, 80
from February 1st, 2006 FX3U-128MR/ES(-A)
FX3U-128MT/ES(-A)
FX3U-128MT/ESS
FX3U-MR/DS
Where  indicates: 16, 32, 48, 64, 80
from September 1st, 2010 FX3U-MR/UA1
FX3U-MS/ES
Where  indicates: 32, 64
Standard Remark
EN61131-2: 2007
Programmable controllers
- Equipment
requirements and tests
Compliance with all relevant aspects
of the standard.
EMI
Radiated Emission
Conducted Emission
EMS
Radiated electromagnetic field
Fast transient burst
Electrostatic discharge
High-energy surge
Voltage drops and interruptions
Conducted RF
Power frequency magnetic field
Standard Remark
EN61000-6-4: 2007
- Generic emission
standard
Industrial environment
EN50081-2: 1993
Electromagnetic
compatibility
Compliance with all relevant aspects
of the standard.
Emission-Enclosure port
Emission-Low voltage AC mains
port
Emission-Telecommunications/
network port
EN50082-2: 1995
Electromagnetic
compatibility
- Generic immunity
standard
Industrial environment
Compliance with all relevant aspects
of the standard.
RF immunity
Fast transients
ESD
Conducted
Power magnetic fields
EN61131-2: 1994
/A11: 1996
/A12: 2000
Programmable controllers
-Equipment
requirements and tests
Compliance with all relevant aspects
of the standard.
Radiated electromagnetic field
Fast transient burst
Electrostatic discharge
Damped oscillatory wave
EN61131-2: 2007
Programmable controllers
-Equipment
requirements and tests
Compliance with all relevant aspects
of the standard.
EMI
Radiated Emission
Conducted Emission
EMS
Radiated electromagnetic field
Fast transient burst
Electrostatic discharge
High-energy surge
Voltage drops and interruptions
Conducted RF
Power frequency magnetic field
Standard Remark
EN61131-2: 2007
Programmable controllers
-Equipment
requirements and tests
The equipment has been assessed
as a component for fitting in a
suitable enclosure which meets the
requirements of EN61131-2: 2007
Models: MELSEC FX2N series manufactured
from July 1st, 1997 FX2N-ER-ES/UL FX2N-ET-ESS/UL
Where  indicates: 32, 48
FX2N-16EYR-ES/UL
from April 1st, 1998 FX2N-48ER-DS
from August 1st, 1998 FX2N-48ER-UA1/UL
from August 1st, 2005 FX2N-8ER-ES/UL FX2N-8EYR-ES/UL
from September 1st, 2010 FX2N-8EYR-S-ES/UL
For the products above, PLCs manufactured
before March 31st, 2002 are compliant with IEC1010-1
from April 1st, 2002 to April 30th, 2006 are compliant with EN61131-
2: 1994 +A11: 1996 +A12: 2000
after May 1st, 2006 are compliant with EN61131-2: 2007
Caution for compliance with EC Directive
Installation in Enclosure
Programmable logic controllers are open-type devices that must be
installed and used within conductive control boxes. Please use the
FX3U Series programmable logic controllers while installed in
conductive shielded control boxes. Please secure the control box lid
to the control box (for conduction). Installation within a control box
greatly affects the safety of the system and aids in shielding noise
from the programmable logic controller.
Caution for Analog Products in use
The analog special adapters have been found to be compliant to the
European standards in the aforesaid manual and directive. However,
for the very best performance from what are in fact delicate
measuring and controlled output device Mitsubishi Electric would like
to make the following points;
As analog devices are sensitive by nature, their use should be
considered carefully. For users of proprietary cables (integral with
sensors or actuators), these users should follow those
manufacturers installation requirements.
Mitsubishi Electric recommend that shielded cables should be used.
If NO other EMC protection is provided, then users may experience
temporary induced errors not exceeding +10 %/-10 % in very heavy
industrial areas.
However, Mitsubishi Electric suggest that if adequate EMC
precautions are followed with general good EMC practice for the
users complete control system, users should expect normal errors
as specified in this manual.
- Sensitive analog cable should not be laid in the same trunking
or cable conduit as high voltage cabling. Where possible users
should run analog cables separately.
- Good cable shielding should be used. When terminating the
shield at Earth - ensure that no earth loops are accidentally
created.
- When reading analog values, EMC induced errors can be
smoothed out by averaging the readings. This can be achieved
either through functions on the analog special adapter/block or
through a users program in the FX3U Series PLC main unit.
Incorporated Items
Check if the following product and items are included in the package:
(*1) The FX3U-M/ES-A becomes Chinese version.
1. Outline
1.1 Part names
Standard Remark
IEC1010-1: 1990
/A1: 1992
Safety requirements for
electrical equipment for
measurement, control, and
laboratory use
- General requirements
The equipment has been assessed
as a component for fitting in a
suitable enclosure which meets the
requirements of IEC 1010-1:
1990 +A1: 1992
EN61131-2: 1994 : 2007
/A12: 2000
/A11: 1996
Programmable controllers
- Equipment
requirements and tests
The equipment has been assessed
as a component for fitting in a
suitable enclosure which meets the
requirements of EN61131-2:
1994 +A11: 1996 +A12: 2000,
: 2007
Included Items
Main units
FX3U-16Mto
FX3U-128M
Product 1 unit
Dust proof protection sheet 1 sheet
Manuals [Japanese (*1)/English] 1 manual
Input/output extension units
FX2N-32E,
FX2N-48E
Product 1 unit
Extension cable 1 cable
Input/output number label 1 sheet
Input/output extension blocks
FX2N-8E,
FX2N-16E
Product 1 unit
Input/output number label 1 sheet
No. Name
[1] Top cover
[2] Battery cover
[3] Special adapter connecting hooks (2 places)
[4] Expansion board dummy cover
[5] RUN/STOP switch
[6] Peripheral device connecting connector
[7] DIN rail mounting hooks
[8] Model name (abbreviation)
[9] Input display LEDs (Red)
[10] Terminal block covers
[11] Extension device connecting connector cover
[12]
Operation status display LEDs
POWER Green On while power is on the PLC.
RUN Green On while the PLC is running.
BATT Red Lights when the battery voltage drops.
ERROR Red Flashing when a program error occurs.
Red Lights when a CPU error occurs.
[13] Output display LEDs (Red)
[1]
[2]
[3]
[9]
[10]
[11]
[12]
[13]
[8]
[4]
[5]
[6]
[7]

With terminal cover open
1.2 External dimensions and weight
(*1) 2- 4.5-diam mounting holes: FX3U-16M, FX3U-32M
(except FX3U-32MR/UA1)
4- 4.5-diam mounting holes: FX3U-48M, FX3U-64M,
FX3U-80M, FX3U-128M,
FX3U-32MR/UA1
FX3U-16Mand FX3U-32M(except FX3U-32MR/UA1) do
not have the (*)-marked mounting holes.
(*2) FX3U-32MR/UA1 is equivalent to FX3U-48M.
(*3) FX3U-64MR/UA1 is equivalent to FX3U-80M.
Installation
35-mm-wide DIN rail or Direct (screw) mounting (M4)
2. Installation (general specifications)
As for installation of the input/output extension units/blocks, special
adapters and expansion boards, refer to FX3U Series User's Manual
- Hardware Edition.
No. Name
[1] Protective terminal covers (FX3U-M/-A is excluded)
[2] Power supply, Input (X) terminals
[3] Terminal block mounting screws
(FX3U-16Mterminal block cannot be installed/removed)
[4] Terminal names
[5] Output (Y) terminals
Model name W:
mm (inches)
W1:
mm (inches)
Direct mounting
hole pitches
MASS
(Weight) :
kg (lbs)
FX3U-16M130 (5.12”) 103 (4.06”) 0.6 (1.32lbs)
FX3U-32M(*2) 150 (5.91”) 123 (4.85”) 0.65 (1.43lbs)
FX3U-48M182 (7.17”) 155 (6.11”) 0.85 (1.87lbs)
FX3U-64M(*3) 220 (8.67”) 193 (7.6”) 1.00 (2.2lbs)
FX3U-80M285 (11.23”) 258 (10.16”) 1.20 (2.64lbs)
FX3U-128M350 (13.78”) 323 (12.72”) 1.80 (3.96lbs)
[2]
[5]
[3]
[3]
[1]
[4]
W
W1
22
(0.87")
Unit: mm (inches)
90 (3.55")
80 (3.15")
86 (3.39")
(*1)
9 (0.36")
Mounting hole pitches
*
*
INSTALLATION
PRECAUTIONS
Use the product within the generic environment specifications
described in section 2.1 of this manual.
Never use the product in areas with excessive dust, oily smoke,
conductive dusts, corrosive gas (salt air, Cl2, H2S, SO2or
NO2), flammable gas, vibration or impacts, or expose it to high
temperature, condensation, or rain and wind.
If the product is used in such conditions, electric shock, fire,
malfunctions, deterioration or damage may occur.
Do not touch the conductive parts of the product directly. Doing
so may cause device failure or malfunctions.
Install the product securely using a DIN rail or mounting screws.
Install the product on a flat surface.
If the mounting surface is rough, undue force will be applied to
the PC board, thereby causing nonconformities.
When drilling screw holes or wiring, make sure cutting or wire
debris does not enter the ventilation slits.
Failure to do so may cause fire, equipment failures or
malfunctions.
Be sure to remove the dust proof sheet from the PLC's
ventilation port when installation work is completed. Failure to
do so may cause fire, equipment failures or malfunctions.
Connect the extension cables, peripheral device cables, input/
output cables and battery connecting cable securely to their
designated connectors.
Loose connections may cause malfunctions.
Turn off the power to the PLC before attaching or detaching the
following devices.
Failure to do so may cause device failures or malfunctions.
- Peripheral devices, display modules, expansion boards and
special adapters
- Extension units/blocks and the FX Series terminal block
- Battery and memory cassette
Notes
When a dust proof sheet is supplied with an unit, keep the
sheet applied to the ventilation slits during installation and
wiring work.
To prevent temperature rise, do not install the PLC on a floor, a
ceiling or a vertical surface.
Install it horizontally on a wall as shown in section 2.2.
Keep a space of 50 mm (1.97”) or more between the unit main
body and another device or structure (part A). Install the unit as
far away as possible from high-voltage lines, high-voltage
devices and power equipment.
WIRING
PRECAUTIONS
Cut off all phases of the power supply externally before
installation or wiring work in order to avoid damage to the
product or electric shock.
2.1 Generic specifications
(*1) The criterion is shown in IEC61131-2.
(*2) Dielectric withstand voltage and insulation resistance are
shown in the following table.
For dielectric with stand voltage test and insulation resistance
test of each product, refer to the following manual.
Refer to FX3U Series User's Manual - Hardware Edition.
(*3) For common grounding, refer to section 3.3.
(*4) The PLC cannot be used at a pressure higher than the
atmospheric pressure to avoid damage.
Item Specification
Ambient
temperature
0 to 55 C (32 to 131 F) when operating and -25 to
75 C (-13 to 167 F) when stored
Ambient
humidity 5 to 95 %RH (no condensation) when operating
Vibration
resistance
(*1)
Fre-
quency
(Hz)
Accele-
ration
(m/s2)
Half
amplitude
(mm) Sweep Count
for X, Y, Z: 10
times
(80 min in
each
direction)
When
installed
on DIN
rail
10 to 57 - 0.035
57 to
150 4.9 -
When
installed
directly
10 to 57 - 0.075
57 to
150 9.8 -
Shock
resistance
(*1)
147 m/s2Acceleration, Action time: 11 ms, 3 times by
half-sine pulse in each direction X, Y, and Z
Noise
resistance
By noise simulator at noise voltage of 1,000 Vp-p,
noise width of 1 s, rise time of 1 ns and period of 30
to 100 Hz
Dielectric
withstand
voltage (*2)
1.5 kV AC for one
minute
Between each terminals and
ground terminal
500 V AC for one
minute
Insulation
resistance
(*2)
5 Mor more by
500 V DC megger
Grounding
Class D grounding (grounding resistance: 100 or
less) <Common grounding with a heavy electrical
system is not allowed.> (*3)
Working
atmosphere
Free from corrosive or flammable gas and excessive
conductive dusts
Working
altitude <2000 m (*4)
Terminal Dielectric
strength
Insulation
resistance
Main units, Input/output extension units/blocks
Between power supply terminal
(AC power) and ground
terminal
1.5 kV AC for
one minute
5 Mor more by
500 V DC megger
Between power supply terminal
(DC power) and ground
terminal
500 V AC for
one minute
Between 24 V DC service
power supply connected to
input terminal (24 V DC) and
ground terminal
500 V AC for
one minute
Between input terminal (100 V
AC) and ground terminal
1.5 kV AC for
one minute
Between output terminal (relay)
and ground terminal
1.5 kV AC for
one minute
Between output terminal
(transistor) and ground terminal
500 V AC for
one minute
Between output terminal (triac)
and ground terminal
1.5 kV AC for
one minute
Expansion boards, Special adapters,
Special function units/blocks
Between terminal of expansion
board and ground terminal Not allowed Not allowed
Between terminal of special
adapter and ground terminal
500 V AC for
1 min
5 Mor more by
500 V DC megger
Special function unit/block Each manual

2.2 Installation location
Install the PLC in an environment conforming to the generic
specifications (section 2.1), installation precautions and notes.
For more details, refer to FX 3U Series User's Manual - Hardware
Edition.
Installation location in enclosure
Space in enclosure
Extension devices can be connected on the left and right sides of the
main unit of the PLC.
If you intend to add extension devices in the future, keep necessary
spaces on the left and right sides.
2.2.1 Affixing the dust proof sheet
The dust proof sheet should be affixed to the ventilation port before
beginning the installation and wiring work.
For the affixing procedure, refer to the instructions on the
dust proof sheet.
Be sure to remove the dust proof sheet when the installation and
wiring work is completed.
2.3 Procedures for installing to and detaching from
DIN rail
The products can be installed on a DIN46277 rail [35 mm (1.38”)
wide]. This section explains the installations of the main units.
For the input/output extension units/blocks and special adapters,
refer to the following manual.
Refer to FX3U Series User’s Manual - Hardware Edition.
2.3.1 Installation
1) Connect the expansion boards and special adapters to the main
unit.
2) Push out all DIN rail mounting hooks (below fig.A)
3) Fit the upper edge of the DIN rail
mounting groove (right fig.B)
onto the DIN rail.
4) Lock the DIN rail mounting hooks (below fig.C) while pressing the
PLC against the DIN rail.
2.4 Procedures for installing directly (with M4
screws)
The product can be installed directly on the panel (with screws).
This section explains the installation of the main units.
As for the details of the installation/detaching for input extension
units/blocks and special adapters, refer to the following manual.
Refer to FX3U Series User's Manual - Hardware Edition.
2.4.1 Mounting hole pitches
Refer to the External Dimensions (section 1.2) for the product's
mounting hole pitch information.
As for the details of the mounting hole pitches for extension unit/
block and special adapters, refer to the following manual.
Refer to FX3U Series User's Manual - Hardware Edition.
≥50 mm (1.97")
A
A
AA
A
FX 3U
Series
main
unit
FX
2N
-16EX
-ES/UL
FX
2N
-16EYT
-ESS/UL
Configuration without extension cable
Another equipment
Another
equipment
Extension
cable
·FX
0N-65EC
·FX0N-30EC
Another
equipment
A
A
A
A
A
A
A
A≥50 mm (1.97")
Configuration in 2 stages with extension cable
FX2N-CNV-BC
Input/output
powered
extension
unit
FX2N-16EX
-ES/UL
FX2N-10PG FX2N-8AD
FX3U Series
main unit
FX2N-16EX-ES/UL FX2N-16EYT-ESS/UL FX2N-4AD FX2N-16EYR-ES/UL FX3U-4AD-ADP
A2)2)
2)
A
2)
B
B
C4) C4)
2.4.2 Installation
1) Make mounting holes in the
mounting surface referring to
the external dimensions
diagram.
2) Fit the main unit (A in the right
figure) based on the holes, and
secure it with M4 screws (B in
the right figure).
The mounting hole pitches and
number of screws depend on
the product. Refer to the
external dimensions diagram.
3. Power supply/input/output specifications
and examples of external wiring
As for the details of the power supply wiring and input/output wiring,
refer to FX3U Series User's Manual - Hardware Edition.
DESIGN
PRECAUTIONS
Make sure to have the following safety circuits outside of the
PLC to ensure safe system operation even during external
power supply problems or PLC failure.
Otherwise, malfunctions may cause serious accidents.
1) Most importantly, have the following: an emergency stop
circuit, a protection circuit, an interlock circuit for opposite
movements (such as normal vs. reverse rotation), and an
interlock circuit (to prevent damage to the equipment at the
upper and lower positioning limits).
2) Note that when the PLC CPU detects an error, such as a
watchdog timer error, during self-diagnosis, all outputs are
turned off. Also, when an error that cannot be detected by
the PLC CPU occurs in an input/output control block,
output control may be disabled.
External circuits and mechanisms should be designed to
ensure safe machinery operation in such a case.
3) Note that the output current of the 24 V DC service power
supply varies depending on the model and the absence/
presence of extension blocks. If an overload occurs, the
voltage automatically drops, inputs in the PLC are
disabled, and all outputs are turned off.
External circuits and mechanisms should be designed to
ensure safe machinery operation in such a case.
4) Note that when an error occurs in a relay, triac or transistor
output device, the output could be held either on or off.
For output signals that may lead to serious accidents,
external circuits and mechanisms should be designed to
ensure safe machinery operation in such a case.
DESIGN
PRECAUTIONS
Do not bundle the control line together with or lay it close to the
main circuit or power line. As a guideline, lay the control line at
least 100 mm (3.94") or more away from the main circuit or
power line.
Noise may cause malfunctions.
Install module so that excessive force will not be applied to
peripheral device connectors.
Failure to do so may result in wire damage/breakage or PLC
failure.
B
A
B
Notes
Simultaneously turn on and off the power supplies of the main
unit and extension devices.
Even if the AC power supply causes an instantaneous power
failure for less than 10 ms, the PLC can continue to operate.
Even if the DC power supply causes an instantaneous power
failure for less than 5ms, the PLC can continue to operate.
If a long-time power failure or an abnormal voltage drop occurs,
the PLC stops, and output is turned off. When the power
supply is restored, it will automatically restart (when the RUN
input is on).
WIRING
PRECAUTIONS
Make sure to cut off all phases of the power supply externally
before installation or wiring work.
Failure to do so may cause electric shock or damage to the
product.
WIRING
PRECAUTIONS
Connect the AC power supply to the dedicated terminals
described in this manual.
If an AC power supply is connected to a DC input/output
terminal or DC power supply terminal, the PLC will burn out.
Do not wire vacant terminals externally.
Doing so may damage the product.
Perform class D grounding (grounding resistance: 100 or
less) to the grounding terminal on the FX3U PLC main unit with
a wire 2 mm2or thicker.
Do not use common grounding with heavy electrical systems
(refer to section 3.3).
When drilling screw holes or wiring, make sure cutting or wire
debris does not enter the ventilation slits.
Failure to do so may cause fire, equipment failures or
malfunctions.
Make sure to properly wire to the terminal in accordance with
the following precautions.
Failure to do so may cause electric shock, equipment failures, a
short-circuit, wire breakage, malfunctions, or damage to the
product.
- The disposal size of the cable end should follow the
dimensions described in the manual.
- Tightening torque should follow the specifications in the
manual.
Notes
Input/output wiring 50 to 100 m (164’1” to 328’1”) long will
cause almost no problems of noise, but, generally, the wiring
length should be less than 20 m (65’7”) to ensure the safety.
Extension cables are easily affected by noise. Lay the cables
at a distance of at least 30 to 50 mm (1.19” to 1.97”) away from
the PLC output and other power lines.

3.1 Wiring
3.1.1 Cable end treatment and tightening torque
For the terminals of FX3U series PLC, M3 screws are used.
The electric wire ends should be treated as shown below.
Tighten the screws to a torque of 0.5 to 0.8 Nm.
Do not tighten terminal screws exceeding the specified torque.
Failure to do so may cause equipment failures or malfunctions.
When one wire is connected to one terminal
<Reference>
When two wires are connected to one terminal
<Reference>
3.1.2 Removal and installation of quick-release terminal
block
Removal Unscrew the terminal block mounting screw [both right
and left screws] evenly, and remove the terminal block.
Installation Place the terminal block in the specified position, and
tighten the terminal block mounting screw evenly [both
right and left screws].
Tightening torque 0.4 to 0.5 Nm
Do not tighten the terminal block mounting screws
exceeding the specified torque.
Failure to do so may cause equipment failures or
malfunctions.
(*) Pay attention so that the center of the terminal block
is not lifted.
3.2 Power supply specifications and example of
external wiring
As for the details of the power supply specifications and example of
external wiring, refer to the following manual.
Refer to FX3U Series User's Manual - Hardware Edition.
3.2.1 Power supply specifications
[Main unit, Input/output extension units]
Terminal
Manufacturer Type No. Certification Pressure Bonding Tool
JAPAN
SOLDERLESS
TERMINAL MFG
CO LTD (JST)
FV1.25-B3A
UL Listed YA-1 (JST)
FV2-MS3
Terminal
Manufacturer Type No. Certification Pressure Bonding Tool
JAPAN
SOLDERLESS
TERMINAL MFG
CO LTD (JST)
FV1.25-B3A UL Listed YA-1 (JST)
φ3.2 (0.13")
6.2 mm (0.24")
or less
Terminal
screw
Solderless
terminal
6.2 mm (0.24")
or less
φ3.2 (0.13")
Terminal
6.3 mm (0.25")
or more
6.3 mm (0.25")
or more
6.2 mm (0.24")
or less
6.2 mm (0.24")
or less
φ3.2 (0.13")
φ3.2 (0.13")
Terminal
Terminal
screw
Solderless
terminal
Item
Specification
AC power type DC power type
(*6)
Supply voltage 100 - 240 V AC 24 V DC
Allowable
supply
voltage
range
Main unit
85 to 264 V AC
16.8 to 28.8 V DC
(*5)
FX2N-32E,
FX2N-48E
24 V DC +20 %,
-30 %
Rated frequency 50/60 Hz -
Allowable instantaneous
power failure time
Operation can be
continued upon
occurrence of
instantaneous
power failure for
10 ms or less.
(*4)
Operation can be
continued upon
occurrence of
instantaneous
power failure for 5
ms or less.
Power
fuse
FX3U-16Mto
32M(*7) 250 V 3.15 A
FX3U-48Mto
128M250 V 5 A
FX2N-32E250 V 3.15 A -
FX2N-48E250 V 5 A 250 V 5 A
Rush
current
Main unit
30 A max. 5 ms
or less/100 V AC
65 A max. 5 ms
or less/200 V AC
35 A max. 0.5 ms
or less/24 V DC
FX2N-32E,
FX2N-48E
40 A max. 5 ms
or less/100 V AC
60 A max. 5 ms
or less/200 V AC
-
Power
consumption
(*1)
FX3U-16M30 W 25 W
FX3U-32M35 W 30 W
FX3U-48M40 W 35 W
FX3U-64M45 W 40 W
FX3U-80M50 W 45 W
FX3U-128M65 W -
FX2N-32E30 W -
FX2N-48E35 W 30 W
24 V DC
service
power
supply (*2)
FX3U-16Mto
32M400 mA or less -
FX3U-48Mto
128M600 mA or less -
FX2N-32E250 mA -
FX2N-48E460 mA -
5 V DC
builtin
power
supply (*3)
Main unit 500 mA or less
FX2N-32E
690 mA or less
FX2N-48E
(*1) Does not include the power consumption of extension units/
special extension units, and of the extension blocks/special
extension blocks connected to those units.
For the power (current) consumed by the extension units/
blocks for input/output, refer to FX3U Series User's Manual -
Hardware Edition.
For the power consumed by the special extension units/
blocks, refer to the appropriate manual.
(*2) When input/output extension blocks are connected, the 24 V
DC service power supply is consumed by the blocks, and the
current value to be used by the main unit is reduced.
The AC power (AC input) type and DC power type do not have
a service power supply.
(*3) Cannot be used to supply power to an external destination.
The power is supplied to input/output extension blocks,
special extension blocks, special adapters and expansion
boards.
The following manual shows further information.
Refer to FX3U Series User’s Manual - Hardware Edition.
(*4) When the supply voltage is 200 V AC, the time can be
changed to 10 to 100 ms by editing the user program.
(*5) When supply voltage is DC 16.8 to 19.2 V, the connectable
extension equipment decreases. The following manual shows
further information.
Refer to FX3U Series User’s Manual - Hardware Edition.
(*6) When attaching high-speed input/output special adapter
(FX3U-4HSX-ADP, FX3U-2HSY-ADP) and special function
block (FX0N-3A, FX2N-2AD, FX2N-2DA), the number of
connectable modules to the main unit is limited, due to the
current consumption (internal 24 V DC) at startup. The
following manual shows further information.
Refer to FX3U Series User’s Manual - Hardware Edition.
(*7) 250 V 5 A is specified for the power fuse of FX3U-32MR/UA1.
3.2.2 Example of external wiring (AC power type)
100 to 240 V AC power is supplied to the main unit and input/output
extension units. For the details of wiring work, refer to section 3.1.
3.2.3 Example of external wiring (DC power type)
24 V DC power is supplied to the main unit and input/output
extension unit. For the details of wiring work, refer to section 3.1.
3.3 Grounding
Ground the PLC as stated below.
Perform class D grounding. (Grounding resistance: 100 or
less)
Ground the PLC independently if possible.
If it cannot be grounded independently, ground it jointly as shown
below.
Use ground wires thicker than AWG14 (2 mm2).
Position the grounding point as close to the PLC as possible to
decrease the length of the ground wire.
3.4 Input specifications and external wiring
As for the details of the input specifications and external wiring, refer
to the following manual.
Refer to FX3U Series User's Manual - Hardware Edition.
3.4.1 Input specifications (24 V DC input type)
Power on
100 to 240 V AC
PL
MC
MC
DC AC
MCMC
Breaker
(
*
)
L
N
PLC
L
N
Main unit
Input/output
extension
unit
Emer-
gency
DC
power
supply
Power supply for loads connected
to PLC output terminals
Fuse
(
*
)Class D grounding
See section 3.3 for
details.
Item Specification
Number of
input
points
FX2N-8ER4 points (8 points) (*1)
FX3U-16M,
FX2N-8EX8 points
FX3U-32M,
FX2N-16EX,
FX2N-32E
16 points
FX3U-48M,
FX2N-48E24 points
FX3U-64M32 points
FX3U-80M40 points
FX3U-128M64 points
24 V DC
PL
Power on
Emer-
gency
MC
MC
Power supply for loads connected
to PLC output terminals
MCMC
(*)Class D grounding
See section 3.3 for
details.
Circuit protector
Fuse
(*)
PLC
Main unit
Input/output
extension
unit
PLC Another
equipment PLC Another equipment PLC Another equipment
Shared grounding
(Good condition)
Common grounding
(Not allowed)
Independent grounding
(Best condition)

(*1) Each value inside ( ) indicates the number of occupied points.
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]
Input connecting type Refer to FX3U Series User's
Manual -
Hardware Edition
Input form
Input
signal
voltage
Main units
AC power
Type 24 V DC 10 %, -10 %
DC power
Type 24 V DC 20 %, -30 %
Input/
output
extension
unit
AC power
Type 24 V DC 10 %, -10 %
DC power
Type 24 V DC 20 %, -30 %
Input
impedance
Main units
X000 to
X005 3.9 k
X006,
X007 3.3 k
X010 or
more
4.3 k
(Does not apply to FX3U-
16M  .)
Input/output
extension unit/block 4.3 k
Input
signal
current
Main units
X000 to
X005 6 mA/24 V DC
X006,
X007 7 mA/24 V DC
X010 or
more
5 mA/24 V DC
(Does not apply to FX3U-
16M.)
Input/output
extension unit/block 5 mA/24 V DC
ON input
sensitivity
current
Main units
X000 to
X005 3.5 mA or more
X006,
X007 4.5 mA or more
X010 or
more
3.5 mA or more
(Does not apply to FX3U-
16M  .)
Input/output
extension unit/block 3.5 mA or more/24 V DC
OFF input sensitivity current 1.5 mA or less
Input response time Approx. 10 ms
Input signal form
Sink input:
No-voltage contact input
NPN open
collector transistor
Source input:
No-voltage contact input
PNP open
collector transistor
Input circuit insulation Photocoupler insulation
Input operation display LED on panel lights when
photocoupler is driven.
Item Specification
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)
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.
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 1.5 mA or more, connect a bleeder
resistance, Rb, obtained from formula as shown in the following
figure.
3.4.5 Input specifications (100 V AC input type)
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)
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 V AC to 120 V
+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
ΙΙ
Rb 6
Ι
-1.5 (kΩ)

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
(*1) Each value inside ( ) indicates the number of occupied points.
(*2) The total load current of resistance loads per common
terminal should be the following value.
- 1 output points/common terminal: 2 A or less
- 4 output points/common terminal: 8 A or less
- 8 output points/common terminal: 8 A or less
As for the number of outputs per common terminal, refer to
“Chapter 4 interpretation of partition” and the following manual.
Refer to FX3U Series User's Manual - Hardware Edition.
3.5.2 Life of relay output contact
The product life of relay contacts considerably varies depending on
the load type used. Take care that loads generating reverse
electromotive force or rush current may cause poor contact or
deposition of contacts which may lead to considerable reduction of
the contact product life.
1) Inductive load
Inductive loads generate large reverse electromotive force
between contacts at shutdown which may cause arcing. At a
fixed current consumption, as the power factor (phase between
current and voltage) gets smaller, the arc energy gets larger.
The standard life of the contact used for Inductive loads, such as
contactors and solenoid valves, is 500 thousand operations at
20 VA.
The following table shows the approximate life of the relay based
on the results of our operation life test.
Test condition: 1 sec.ON / 1 sec.OFF.
The product life of relay contacts becomes considerably shorter
than the above conditions when the rush overcurrent is shut
down.
For countermeasures while using inductive loads,
refer to Subsection 3.5.4.
Some types of inductive loads generate rush current 5 to 15 times
the stationary current at activation. Make sure that the rush
current does not exceed the current corresponding to the
maximum specified resistance load.
2) Lamp load
Lamp loads generally generate rush current 10 to 15 times the
stationary current. Make sure that the rush current does not
exceed the current corresponding to the maximum specified
resistance load.
3) Capacitive load
Capacitive loads can generate rush current 20 to 40 times the
stationary current. Make sure that the rush current does not
exceed the current corresponding to the maximum specified
resistance load. Capacitive loads such as capacitors may be
present in electronic circuit loads including inverters.
For the maximum specified resistance load,
refer to Subsection 3.5.1.
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)
Load capacity Contact life
20 VA 0.2 A/100 V AC 3 million times
0.1 A/200 V AC
35 VA 0.35 A/100 V AC 1 million times
0.17 A/200 V AC
80 VA 0.8 A/100 V AC 2 hundred thousand
times
0.4 A/200 V AC
3.5.3 Example of relay output wiring
3.5.4 Cautions in external wiring
For cautions in external wiring, refer to the following manual.
Refer to FX3U Series User's Manual - Hardware Edition.
Protection circuit for load short-circuiting
When a load connected to the output terminal short-circuits, the
printed circuit board may be burnt out. Fit a protective fuse on the
output circuit.
Protection circuit of contact when inductive load is used
An internal protection circuit for the relays is not provided for the
relay output circuit. 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.
1) DC circuit
Connect a diode in parallel with the load.
Use a diode (for commutation) having the following
specifications.
2) 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.
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.
Common mode
Use output contacts of the PLC in the common mode.
3.6 Transistor output specifications and example of
external wiring
As for the details of the transistor output specifications and external
wiring, refer to the following manual.
Refer to FX3U Series User's Manual - Hardware Edition.
3.6.1 Transistor output specifications
Item Standard
Reverse voltage 5 to 10 times the load voltage
Forward current Load current or more
Item Standard
Electrostatic capacity Approx. 0.1 F
Resistance value Approx. 100 to 200 
PLC
24 V DC
Fuse
Y000
100 V AC
COM1
Y001
Load
Fuse
Y010
COM2
Y011
Load
Item Specification
Number
of
output
points
FX3U-16MT/,
FX2N-8EYT8 points
FX3U-32MT/,
FX2N-32ET,
FX2N-16EYT
16 points
FX3U-48MT/,
FX2N-48ET24 points
FX3U-64MT/32 points
FX3U-80MT/40 points
FX3U-128MT/ES(S) 64 points
Output connecting type
Refer to FX3U Series
User's Manual -
Hardware Edition
Output
form
FX3U-MT/S(-A),
FX2N-ET,
FX2N-48ET-D,
FX2N-EYT,
FX2N-8EYT-H
Transistor (Sink)
FX3U-MT/SS,
FX2N-ET-ESS/UL,
FX2N-48ET-DSS,
FX2N-EYT-ESS/UL
Transistor (Source)
External power supply 5 to 30 V DC
Max.
load
Resis
tance
load
FX3U-MT/,
FX2N-ET,
FX2N-ET-,
FX2N-EYT,
FX2N-EYT-ESS/UL
0.5 A/point (*1)
FX2N-8EYT-H 1 A/point (*2)
FX2N-16EYT-C 0.3 A/point (*3)
Induc
tive
load
FX3U-MT/,
FX2N-ET,
FX2N-ET-,
FX2N-EYT,
FX2N-EYT-ESS/UL
12 W/24 V DC (*4)
FX2N-8EYT-H 24 W/24 V DC (*5)
FX2N-16EYT-C 7.2 W/24 V DC (*6)
Min. load -
Open circuit leakage current 0.1 mA or less/30 V DC
ON voltage 1.5 V or less

(*1) The total load current of resistance loads per common
terminal should be the following value.
- 1 output point/common terminal: 0.5 A or less
- 4 output point/common terminal: 0.8 A or less
- 8 output point/common terminal: 1.6 A or less
As for the number of outputs per common terminal, refer to
“Chapter 4 interpretation of partition” and the following manual.
Refer to FX3U Series User's Manual - Hardware Edition.
(*2) The total load current of resistance loads per common
terminal should be the following value.
- 4 output points/common terminal: 2 A or less
As for the number of outputs per common terminal, refer to the
following manual.
Refer to FX3U Series User's Manual - Hardware Edition.
(*3) The total load current of resistance loads per common
terminal should be the following value.
- 16 output point/common terminal: 1.6 A or less
As for the number of outputs per common terminal, refer to the
following manual.
Refer to FX3U Series User's Manual - Hardware Edition.
(*4) The total of inductive loads per common terminal should be
the following value.
- 1 output point/common terminal: 12 W or less/24 V DC
- 4 output points/common terminal: 19.2 W or less/24 V DC
- 8 output points/common terminal: 38.4 W or less/24 V DC
As for the number of outputs per common terminal, refer to
“Chapter 4 interpretation of partition” and the following manual.
Refer to FX3U Series User's Manual - Hardware Edition.
(*5) The total of inductive loads per common terminal should be
the following value.
- 4 output points/common terminal: 48 W or less/24 V DC
As for the number of outputs per common terminal, refer to the
following manual.
Refer to FX3U Series User's Manual - Hardware Edition.
(*6) The total of inductive loads per common terminal should be
the following value.
- 16 output points/common terminal: 38.4 W or less
As for the number of outputs per common terminal, refer to the
following manual.
Refer to FX3U Series User's Manual - Hardware Edition.
(*7) The response time is as follows in the FX2N-8EYT-H.
-OFFON: 0.2 ms or less/1 A
-ONOFF: 0.4 ms or less/1 A
3.6.2 External wiring of transistor output
1. External wiring of sink output type
2. External wiring of source output type
3.6.3 Cautions in external wiring
For cautions in external wiring, refer to the following manual.
Refer to FX3U Series User's Manual - Hardware Edition.
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 PCB. To prevent this, a
protection fuse should be inserted at the output.
Use a load power supply capacity that is at least 2 times larger than
the total rated fuse capacity.
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.
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.
3.7 Triac output specifications and example of
external wiring
As for the details of the triac output specifications and external
wiring, refer to the following manual.
Refer to FX3U Series User's Manual - Hardware Edition.
Response
time
OFF

ON
Main unit
Y000 to
Y002
5 s or less/10 mA
or more (5 to 24 V DC)
Y003 or
more
0.2 ms or less/200 mA
or more (at 24 V DC)
Input/output extension
units/blocks (*7)
0.2 ms or less/200 mA
or more (at 24 V DC)
ON

OFF
Main unit
Y000 to
Y002
5 s or less/10 mA
or more (5 to 24 V DC)
Y003 or
more
0.2 ms or less/200 mA
or more (at 24 V DC)
Input/output extension
units/blocks (*7)
0.2 ms or less/200 mA
or more (at 24 V DC)
Output circuit insulation Photocoupler insulation
Output operation display LED on panel lights when
photocoupler is driven.
Item Specification
Item Guide
Reverse voltage 5 to 10 times of the load voltage
Forward current Load current or more
PLC
Load
24 V DC
Fuse
Y000
Y001
COM1
Load
24 V DC
Fuse
Y004
Y005
COM2
PLC
Load
24 V DC
Fuse
Y000
Y001
+V0
Load
24 V DC
Fuse
Y004
Y005
+V1
3.7.1 Triac output specifications
(*1) The total load current of resistance loads per common
terminal should be the following value.
- 4 output points/common terminal: 0.8 A or less
- 8 output points/common terminal: 0.8 A or less
As for the number of outputs per common terminal, refer to
“Chapter 4 interpretation of partition” and the following manual.
Refer to FX3U Series User's Manual - Hardware Edition.
3.7.2 External wiring of triac output
3.7.3 Cautions in external wiring
For cautions in external wiring, refer to the following manual.
Refer to FX3U Series User's Manual - Hardware Edition.
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 PCB. To prevent this, a
protection fuse should be inserted at the output.
Micro current load
The PLC's internal Triac output circuit is equipped with a turn-off C-R
absorber. When connecting a very low current load of "0.4 VA/100 V
AC or less, or 1.6 VA/200 V AC or less", please connect a surge
absorber parallel to the load.
Select the rated voltage of a surge absorber that is suitable for the
load being used. Refer to the table below for other specifications.
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. Terminal block layouts
For details on the terminal block layout, refer to the following manual.
Refer to FX3U Series User's Manual - Hardware Edition.
Interpretation of partition
The partition of the output terminals (see following figure) indicates
the range of the output connected to the same common.
Item Specification
Number
of output
points
FX3U-32MS/ES ,
FX2N-16EYS ,
FX2N-32ES
16 points
FX3U-64MS/ES 32 points
Output connecting type
Refer to FX3U Series
User's Manual - Hardware
Edition
Output form Triac (SSR)
External power supply 85 to 242 V AC
Max. load
Resistance load 0.3 A/point (*1)
Inductive load 15 VA/100 V AC,
30 VA/200 V AC
Min. load 0.4 VA/100 V AC,
1.6 VA/200 V AC
Open circuit leakage current 1 mA/100 V AC,
2 mA/200 V AC
Response
time
OFFON 1 ms or less
ONOFF 10 ms or less
Output circuit insulation Photo-thyristor insulation
Output operation display LED on panel lights when
photo-thyristor is driven.
PLC
U
U
Load
Fuse AC power
supply
Fuse
Load
AC power
supply
Y000
Y001
COM1
Y005
Y004
COM2
Item Guide
Static electricity capacity Approx. 0.1 F
Resistance value Approx. 100 to 200 
Y0
Partition
Output terminal
Example: FX
3U -48MT/ES
Y2
COM1 Y1 COM2Y3
Y4
This manual confers no industrial property rights or any rights of any
other kind, nor does it confer any patent licenses. Mitsubishi Electric
Corporation cannot be held responsible for any problems involving
industrial property rights which may occur as a result of using the
contents noted in this manual.
Warranty
Mitsubishi will not be held liable for damage caused by factors found
not to be the cause of Mitsubishi; opportunity loss or lost profits
caused by faults in the Mitsubishi products; damage, secondary
damage, accident compensation caused by special factors
unpredictable by Mitsubishi; damages to products other than
Mitsubishi products; and to other duties.
HEAD OFFICE
HIMEJI WORKS
: TOKYO BUILDING, 2-7-3 MARUNOUCHI,
CHIYODA-KU, TOKYO 100-8310, JAPAN
: 840, CHIYODA CHO, HIMEJI, JAPAN