Mitsubishi Electric MELSEC FX2NC-16MT-D/UL User manual

D/UL
HARDWARE MANUAL
FX2NC (D/UL) SERIES PROGRAMMABLE CONTROLLERS

FX2NC Series Programmable Controllers
Foreword
• This manual contains text, diagrams and explanations which will guide the reader in the
correct installation and operation of the FX2NC and should be read and understood before
attempting to install or use the unit.
• If in doubt at any stage during the installation of the FX2NC always consult a professional
electrical engineer who is qualified and trained to the local and national standards. If in
doubt about the operation or use of the FX2NC please consult the nearest Mitsubishi Elec-
tric distributor.
• This manual is subject to change without notice.

i
FX2NC (D/UL) Series Programmable
Controllers
Hardware Manual
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.
FX2NC Series Programmable Controllers
Manual number : JY992D87201
Manual revision : D
Date : November 2008

FX2NC Series Programmable Controllers
ii
Guidelines for the safety of the user and protection of the FX2NC.
This manual provides information for the installation and use of the FX2NC. The manual has
been written to be used by trained and competent personnel. The definition of such a person
or persons is as follows;
a) Any engineer who is responsible for the planning, design and construction of automatic
equipment using the product associated with this manual should be of a competent
nature, (trained and qualified to the local and national standards required to fulfill that
role). These engineers should be fully aware of all aspects of safety with regards to auto-
mated equipment.
b) Any commissioning or service engineer must be of a competent nature, trained and qual-
ified to the local and national standards required to fulfill that job. These engineers
should also be trained in the use and maintenance of the completed product. This
includes being completely familiar with all associated documentation for the said product.
All maintenance should be carried out in accordance with established safety practices.
c) All operators of the completed product should be trained to use that product in a safe and
co-ordinated manner in compliance to established safety practices. The operators should
also be familiar with documentation which is connected with the actual operation of the
completed equipment.
Note : The term ‘completed equipment’ refers to a third party constructed device which con-
tains or uses the product associated with this manual.

FX2NC Series Programmable Controllers
iii
Note’s on the symbology used in this manual
At various times through out this manual certain symbols will be used to highlight points of
information which are intended to ensure the users personal safety and protect the integrity of
the equipment. Whenever any of the following symbols are encountered, its associated note
must be read and understood. Each of the symbols used will now be listed with a brief descrip-
tion of its meaning.
Hardware warnings
Software warning
1) Indicates that the identified danger WILL cause physical and property damage.
2) Indicates that the identified danger could POSSIBLY cause physical and property damage.
3) Indicates a point of further interest or further explanation.
4) Indicates special care must be taken when using this element of software.
5) Indicates a special point which the user of the associate software element should be aware
of.
6) Indicates a point of interest or further explanation.

FX2NC Series Programmable Controllers
iv
• Under no circumstances will Mitsubishi Electric be liable responsible for any consequential
damage that may arise as a result of the installation or use of this equipment.
• All examples and diagrams shown in this manual are intended only as an aid to
understanding the text, not to guarantee operation. Mitsubishi Electric will accept no
responsibility for actual use of the product based on these illustrative examples.
• Please contact a Mitsubishi Electric distributor for more information concerning applications
in life critical situations or high reliability.

FX2NC Series Programmable Controllers
v
Contents.
Guideline.............................................................................................................................ii
1. Introduction .........................................................................................1-1
1.1 Unit accessories............................................................................................... 1-9
1.2 World Spec. ..................................................................................................... 1-9
1.3 Model name ................................................................................................... 1-10
1.4 Serial numbers .............................................................................................. 1-11
1.5 Configuration.................................................................................................. 1-12
1.5.1 Summary ........................................................................................................... 1-14
1.5.2 Current consumption and input/output points.................................................... 1-16
1.5.3 Rules ................................................................................................................. 1-20
1.5.4 System configuration example .......................................................................... 1-23
1.5.5 Quick judgment ................................................................................................. 1-26
2. Terminal layouts..................................................................................2-1
2.1 Main units......................................................................................................... 2-1
2.2 FX2NC Extension blocks ................................................................................. 2-3
2.3 FX2N and FX0N Extension blocks ................................................................... 2-4

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Contents.FX2NC Series Programmable Controllers
3. Installation notes .................................................................................3-1
3.1 Product outline ................................................................................................. 3-2
3.2 FX2NC RUN/STOP Control .............................................................................. 3-4
3.3 General specifications...................................................................................... 3-6
3.4 PC mounting arrangements ............................................................................. 3-7
3.5 Connection of extension blocks to main unit.................................................... 3-9
3.6 DIN rail mounting ............................................................................................. 3-9
3.7 Direct mounting ............................................................................................. 3-10
3.8 Extension cable installation............................................................................ 3-14
3.9 General notes ................................................................................................ 3-15
3.10 Memory Board installation .............................................................................3-16
3.11 Wiring techniques .......................................................................................... 3-17
3.12 Termination of connector style I/O ................................................................. 3-18
3.13 Termination of screw terminals ...................................................................... 3-19
3.14 Termination of connector style I/O cables...................................................... 3-20
4. Power supply.......................................................................................4-1
4.1 Power supply cautions ..................................................................................... 4-5
4.2 Earthing / Grounding........................................................................................ 4-6

FX2NC Series Programmable Controllers
vii
Contents.
5. Inputs ..................................................................................................5-1
5.1 24V DC input specifications ............................................................................. 5-1
5.1.1 Typical wiring....................................................................................................... 5-2
5.1.2 Input circuit connection........................................................................................ 5-4
5.1.3 Diodes and inputs connected in series;............................................................... 5-6
5.1.4 Resistors and inputs connected in parallel;......................................................... 5-7
5.2 AC110V input Extension block......................................................................... 5-8
5.2.1 Input circuit connection........................................................................................ 5-8
5.2.2 Programming caution .......................................................................................... 5-9
6. Outputs ...............................................................................................6-1
6.1 Transistor output specification ......................................................................... 6-1
6.1.1 Response times................................................................................................... 6-2
6.1.2 Output circuit configuration.................................................................................. 6-3
6.1.3 Transistor output example ................................................................................. 6-4
6.2 Relay output specification ................................................................................ 6-6
6.2.1 Product life of relay contacts ............................................................................... 6-7
6.2.2 Output circuit configuration.................................................................................. 6-9
6.2.3 Relay output example........................................................................................ 6-11
6.3 Triac (SSR) output specifications...................................................................6-13
6.3.1 In-rush currents ................................................................................................. 6-14
6.3.2 Output circuit configuration................................................................................ 6-15
6.3.3 Triac output example......................................................................................... 6-17
6.4 Applying safe loads........................................................................................ 6-17

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Contents.FX2NC Series Programmable Controllers
7. Diagnostics..........................................................................................7-1
7.1 Preliminary checks........................................................................................... 7-1
7.2 Basic diagnostics ............................................................................................. 7-2
7.2.1 BATT LED ON..................................................................................................... 7-2
7.2.2 ERROR LED flashes (PROGRAM ERROR) ....................................................... 7-2
7.2.3 ERROR LED ON (CPU ERROR) ........................................................................ 7-3
7.3 Common errors ................................................................................................ 7-4
7.4 Replacing the battery .......................................................................................7-4
7.5 Maintenance .................................................................................................... 7-5
7.6 Error flags ON indicates error. ......................................................................... 7-6
7.7 Error registers .................................................................................................. 7-8
7.8 Error codes .................................................................................................... 7-10
7.9 Instruction list ................................................................................................. 7-11
8. Discontinued model.............................................................................8-1