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FX

3UC

 (D, DS, DSS) SERIES 

PROGRAMMABLE CONTROLLERS

HARDWARE MANUAL

This manual describes the part names, dimensions, mounting,
cabling and specifications for the product. This manual is extracted
from FX

3UC

 (D,DS,DSS) Series User's Manual - Hardware Edition.

Refer to FX

3UC

 Series User's Manual - Hardware Edition 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 it can be taken out and
read 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 December 2017
Specifications are subject to change without notice.

© 2013 Mitsubishi Electric Corporation

Safety Precaution

 (Read these precautions before use.)

If the equipment is used in a manner not specified by the manufacturer,
the protection provided by the equipment may be impaired.
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

JY997D50501

Revision

E

Date

December 2017

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.

STARTUP AND 

MAINTENANCE 

PRECAUTIONS

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 FX

3UC

 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.

- When replacing the battery, make sure to use our specified 

product (FX

3U

-32BL).

- When a battery error occurs ("BAT" LED is lit in red), follow the 

description in FX

3UC

 Series User's Manual - Hardware Edition.

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 representative.

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.

- Peripheral devices, extension units/blocks, connector 

conversion adapter, extension power supply units, special 

adapters, and FX Series terminal blocks.

- Battery and memory cassettes

Do not use the chemicals for cleaning.

If there is the possibility of touching the PLC inside a control

panel in maintenance, make sure to discharge to avoid the

influence of static electricity.

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

FX

3UC

 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 BAT LED is off, and check the battery life.
If the PLC is transported with the BAT LED on or the battery
exhausted, the battery-backed data may be unstable during
transportation.

Associated manuals

Associated manuals

FX

3UC

 (D, DS, DSS) Series PLC (main unit) comes with this 

document (hardware manual).
For a detailed explanation of the FX

3UC

 Series hardware and

information on instructions for PLC programming and special
extension unit/block, refer to the relevant documents.

Certification of UL, cUL standards

FX

3UC 

series main units, FX

3U 

series special adapter, extension

power supply unit and FX

2N

/FX

2NC 

series input/output extension

blocks supporting UL, cUL standards are as follows:

UL, cUL file number: E95239
Models:

MELSEC FX

3U(C)

 series manufactured

FX

3UC

-



MT/D

FX

3UC

-



MT/DSS

Where 



 indicates: 16, 32, 64, 96

FX

3UC

-16MR/D-T

FX

3UC

-16MR/DS-T

FX

3U

-232ADP(-MB)

FX

3U

-485ADP(-MB)

FX

3U

-CF-ADP

FX

3U

-ENET-ADP

FX

3U

-4AD-ADP

FX

3U

-4DA-ADP

FX

3U

-3A-ADP

FX

3U

-4AD-PT-ADP

FX

3U

-4AD-PTW-ADP FX

3U

-4AD-PNK-ADP

FX

3U

-4AD-TC-ADP

FX

3UC

-1PS-5V

Models:

MELSEC FX

2NC

 series manufactured

FX

2NC

-16EX(-DS)

FX

2NC

-32EX(-DS)

FX

2NC

-16EYT(-DSS) FX

2NC

-32EYT(-DSS)

FX

2NC

-16EX-T(-DS)

FX

2NC

-16EYR-T(-DS)

Models:

MELSEC FX

2N

 series manufactured

FX

2N

-8ER-ES/UL

FX

2N

-8EX-ES/UL

FX

2N

-8EYR-ES/UL

FX

2N

-8EYR-S-ES/UL

FX

2N

-8EYT-ESS/UL

FX

2N

-8EX-UA1/UL

FX

2N

-16EX-ES/UL

FX

2N

-16EYR-ES/UL

FX

2N

-16EYT-ESS/UL FX

2N

-16EYS

Compliance with EC directive (CE Marking)

This product complies with EC directive, however, this document
does not guarantee that a mechanical system including this product
will comply with EC directive.
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.

Caution for Compliance with EC directive

Please use the FX

3UC

 (D, DS, DSS) Series programmable 

controllers while installed in conductive shielded control panels 
under a general industrial environment.

Programmable controllers are open-type devices that must be 

installed and used within conductive control panels. Please secure 
the control panel lid to the control panel (for conduction). Installation 
within a control panel greatly affects the safety of the system and 

aids in shielding noise from the programmable controller.

For the control panel, use the product having sufficient strength, fire 

protectiveness and shielding property to an installation environment.

24 V DC of the power supply must be supplied from the circuit 
double/reinforced insulated from the main power supply (MAINS).

Caution for compliance with the LVD directive 
(EN61010-2-201:2013) (*1)

To an external connection port other than AC power supply terminal 
and AC input/output terminal, connect the circuit separated from a 

dangerous voltage by a double/reinforced insulation.

Between the commons having the adjacent relay output 

terminals, if an external power supply is higher than 120 V AC, 
the insulation is basic. Therefore, when using 120 V AC or higher 
external power supply and 30 V DC/AC or lower external power 

supply between the adjacent commons, do not handle 30 V DC/
AC or lower external power supply as a touchable part, (When 
handling 30 V DC/AC or lower external power supply as a 

touchable part, add a basic insulation.)

TRANSPORTATION 
AND STORAGE 
PRECAUTIONS

The PLC is a precision instrument. During transportation, avoid

impacts larger than those specified in Section 2.1 by using

dedicated packaging boxes and shock-absorbing palettes.

Failure to do so may cause failures in the PLC.

After transportation, verify operation of the PLC and check for

damage of the mounting part, etc.

When transporting lithium batteries, follow required

transportation regulations.

(For details of the regulated products, refer to FX

3UC

 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

FX

3UC

 Series 

User's Manual 

- Hardware Edition

JY997D28701

MODEL CODE:

09R519

Explains FX

3UC

 Series 

PLC specification details 

for I/O, wiring, installation, 

and maintenance.

FX

3S

/FX

3G

/FX

3GC

/

FX

3U

/FX

3UC

 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/FX

2N

-

232IF.

FX

3S

/FX

3G

/FX

3GC

/

FX

3U

/FX

3UC

 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.

FX

3S

/FX

3G

/FX

3GC

/

FX

3U

/FX

3UC

 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

Side

B

Side

A

Side

B

JAPANESE

ENGLISH

JY997D50501E

Summary of Contents for FX2NC-16EX-DS

Page 1: ...are manual For a detailed explanation of the FX3UC Series hardware and information on instructions for PLC programming and special extension unit block refer to the relevant documents Certification of UL cUL standards FX3UC series main units FX3U series special adapter extension power supply unit and FX2N FX2NC series input output extension blocks supporting UL cUL standards are as follows UL cUL ...

Page 2: ...nector cover 14 Power connector for main unit 15 Battery cover 16 Nameplate printing is a mark that instructs to use the cable with an appropriate temperature rating 80 C or more for wiring Front panel 6 8 10 6 6 4 2 9 7 11 5 2 12 14 6 4 15 2 Under side 5 Display LED 4 13 16 6 6 3 2 4 1 2 Green Green Red Red Left side Right side 1 2 External dimensions weight Main units Connector type Main units T...

Page 3: ... 2NC 16EYT 50 mm 1 97 A A A A A Configuration with extension cable Other equipment Other equipment Other equipment FX 3U 4AD ADP FX 3UC Main unit FX 2NC 16EX FX 2NC CNV IF FX0N 65EC FX0N 30EC FX 2N 10PG FX2N CNV BC 50 mm 1 97 A A A A A A A A 2 3 Procedures for installing to and detaching from DIN rail The main unit can be installed on a DIN46277 rail 35 mm 1 38 wide For detail refer to the followi...

Page 4: ...hoose a wire with proper cable sheath referring to the above outside dimensions otherwise the wire cannot be inserted easily 2 6 2 Tightening Torque Tighten the terminals to a torque of 0 22 to 0 25 N m Do not tighten terminal screws with a torque outside the above mentioned range Failure to do so may cause equipment failures or malfunctions Tool To tighten terminals use a purchased small sized sc...

Page 5: ...MT D SS 14 W 5 V DC built in power supply 2 FX3UC 16MT D SS FX3UC 16MR D S T 600 mA FX3UC 32MT D SS 560 mA FX3UC 64MT D SS 480 mA FX3UC 96MT D SS 400 mA Model names Power consumption FX2NC 16EX T DS 2 2 W FX2NC 16EX DS 2 2 W FX2NC 32EX DS 4 2 W FX2NC 16EYR T DS 2 2 W FX2NC 16EYT DSS 0 35 W FX2NC 32EYT DSS 0 7 W 3 1 2 Example of external wiring power type Supply 24 V DC power to the main unit and F...

Page 6: ...o set the load current to 10 to 100 mA 5 24 V DC 3 The transistor OFF time is longer under lighter loads For example under a load of 24 V DC 40 mA the response time is approx 0 3 ms 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 FX2NC input output extension b...

Page 7: ...FF 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 COM1 COM1 Y000 Y001 Y002 FX3UC 16MR D S T FX2NC 16EYR T DS 100 V AC Fuse Load Load Load Emergency stop 1 1 Notes The derating curve below shows the simultaneous ON ratio of available PLC inputs or outputs with respect to the ambient...

Page 8: ...OM2 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 COM1 COM1 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 OUT OUT Lower Notch Upper Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 V0 V0 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 OUT Lower Notch Upper Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 V1 V1 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 V0 V0 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 OUT OUT Lower Notch Upper 4 2 3 FX2NC 16EX T DS FX2NC 16EYR T DS FX2NC 16EX T DS FX2NC 16EYR T DS X0 X1 ...

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