Mitsubishi FX1N-4EX-BD User manual

FX1N-4EX-BD Input Expansion Board
USER’S MANUAL
JY992D95001A
This manual contains text, diagrams and explanations which will guide the reader in the correct
installation, safe use and operation of the FX1N-4EX-BD Input Expansion Board and should be read and
understood before attempting to install or use the unit. Further information can be found in the associated
manuals list below.
Specifications are subject to change without notice
Guidelines for the Safety of the User and Protection of the
FX1N-4EX-BD.
This 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 using the product associated with this manual, should be of a competent nature,
trained and qualified to the local and national standards. These engineers should be fully aware of
all aspects of safety with regards to automated equipment.
b) Any commissioning or service engineer must be of a competent nature, trained and qualified to
the local and national standards.
c) All operators of the completed equipment should be trained to use that product in a safe and
coordinated manner in compliance to established safety practices.
Note: The term ‘completed equipment’ refers to a third party constructed device which contains or uses
the product associated with this manual.
Note’s on the Symbols 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 equipment.
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.
• Under no circumstances will Mitsubishi Electric be liable or 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.
• Owing to the very great variety in possible application of this equipment, you must satisfy yourself as
to its suitability for your specific application.
Associated manuals
Manual name Manual No. Description
FX1S Series
Hardware Manual JY992D83901 Describes contents related to hardware of FX1S Series PLC such as specifications, wiring and installation.
FX1N Series
Hardware Manual JY992D89301 Describes contents related to hardware of FX1N Series PLC such as specifications, wiring and installation.
FX Programming
Manual II JY992D88101 Describes instructions in FX1S/FX1N/FX2N/FX2NC Series.
Art.No. 141176
Version A
JY992D95001
2001 10 18

1. Introduction
The FX1N-4EX-BD Input Expansion Board (hereafter referred to as "FX1N-4EX-BD" or "Function
expansion board") is a function expansion board to be installed in the FX1S or FX1N series programmable
controller (hereafter referred to as "PLC"), to increase the input of four points.
1.1 Features of the FX1N-4EX-BD
1) Additional increase of four input points.
2) Internal mounting in the top of the PLC meaning no need for change to the installation area of the
PLC.
3) Additional inputs have special auxiliary relays allocated to each point, which are turned ON and OFF
depending on the input state of the FX1N-4EX-BD.
As special auxiliary relays are used in the PLC program for the input points, the additional inputs are
not included in the regular system I/O count.
1.2 External Dimensions and Each Part Name
Dimensions: mm (inches)
Accessories : Top cover for board 1
M3 screw to mount board 2
M3 screw to fix top cover 1
1) Input terminal.
S/S : Power supply terminal
BX0 : Terminal of input BX0
BX1 : Terminal of input BX1
BX2 : Terminal of input BX2
BX3 : Terminal of input BX3
The top face of this connector is higher than the top face of
the PLC panel cover by approximately 7 mm.
2) Mounting hole (2-φ3.5(0.14"))
3) Input LED
BX0 LED : The LED lights when BX0 is turn on.
BX1 LED : The LED lights when BX1 is turn on.
BX2 LED : The LED lights when BX2 is turn on.
BX3 LED : The LED lights when BX3 is turn on.
4) External port for display module FX1N-5DM or
memory cassette FX1N-EEPROM-8L
5) External connector for PLC
1.3 System configuration
• Only one function expansion board can be used on one FX1S or FX1N series PLC main unit.
Do not try to install two or more expansion boards.
•FX
1N-4EX-BD can be used together with an FX1N-5DM.
Refer to the FX1S or FX1N HARDWARE MANUAL when using the FX1N-4EX-BD together with an
FX1N-5DM.
• When using with the memory cassette FX1N-EEPROM-8L, only program transfer is possible.
(The memory cassette cannot be connected permanently)
1.4 Applicable PLC
Series name Applicable version
FX1S V2.0 or later
FX1N V2.0 or later
BX2S/S BX1BX0 BX3
38.5(1.52")
43(1.69")
3)
2)
1)
2)
4)
5)

2. Installation
Caution
1) Do not use the function expansion board in environments that contain excessive or
conductive dust, corrosive or flammable gas, moisture or rain, excessive heat, regular
impact shocks or excessive vibration.
Use in these environment may cause electric shock, fire, malfunction, damage or
deterioration of the product.
2) Cut off all phases of power source before installing / removing or performing wiring work
on the unit in order to avoid electric shock or damage of product.
3) After the installation and wiring etc. replace the PLCs top cover before power ON.
4) Securely install the function expansion board, and fix to the PLC.
Defective contact can cause malfunction.
2.1 Mounting
Turn off all power to the PLC before installing the FX1N-4EX-BD.
a)Top cover for use with FX1N-4EX-BD (supplied as an accessory)
b)M3 screw to fix top cover (supplied as an accessory)
c)M3 screw to fix FX1N-4EX-BD (2 pieces)
(supplied as accessories)
d)External port for optional equipment
e)FX1N-4EX-BD (function expansion board)
Note: Do not remove this screw on the PLC(FX1S).
1) Remove the top cover of the main unit and keep.
2) Plug FX1N-4EX-BD e) in to the external port d).
3) Fix the function expansion board to the main unit with two M3 screws c). (Tightening torque: 0.3 to 0.6
Nxm)
4) Attach the top cover for use with FX1N-4EX-BD a) in place of the original cover.
During attachment, remove a)’ with a suitable tool, so that the input terminals are exposed.
5) Fix the top cover with an M3 screw b). (Tightening torque: 0.3 to 0.6 Nxm)
e)
d)
c)
a) a)' b)
c)
Note)

3. Input Wiring
Wiring cautions
Observe the following cautions to avoid electrical shock, short-circuit,
disconnection or damage to the unit.
• Do not lay signal cable near to high voltage power cable or house them in the same
trunking duct. Effects of noise or surge induction may occur. Keep signal cables a safe
distance of more than 100 mm (4") from these power cables.
• Where input signal lines are used over an extended distance consideration for voltage
drop and noise interference should be made.
• Twist the end of each stranded cable so that barbed wires are not present.
• Never solder the end of any cables.
• Never connect cables of a non permitted size.
Make sure that the number of connected cables is not more than the unit has been
designed for.
• Fix cables so that any stress is not directly applied on the terminal block or the cable
connection area.
• The terminal tightening torque is 0.5 to 0.6 Nxm. Tighten securely to avoid malfunction.
3.1 Applicable cables
• Use AWG26-16 for connection with input equipment.
• The maximum terminal tightening torque is 0.5 to 0.6Nxm.
• When using a different type of cable, defective contact of the terminal part is possible. Use a crimp terminal to
achieve a good contact.
Linear and sectional area
3.2 Wiring of input
Sink Source
.*1 The service power supply of the PLC main unit can be used.
Linear Sectional area (mm2)Terminal
AWG26 0.1288 Stranded cable: Remove sheath, twist core wires, then
connect cable.
Single cable: Remove sheath, then connect cable.
••• •••
AWG16 1.309
6mm(0.2inches)
Terminal processing of wire
S/S
BX0
BX1
BX2
BX3
24V DC*1 FX1N-4EX-BD
4.3kΩ
4.3kΩ
4.3kΩ
4.3kΩ
+S/S
BX0
BX1
BX2
BX3
4.3kΩ
4.3kΩ
4.3kΩ
4.3kΩ
24V DC*1 FX1N-4EX-BD
+

3.3 Diodes and inputs connected in series;
Vdrop across the diode less than 4V
No more than 2 LEDs should be connected in series.
3.4 Resistors and inputs connected in parallel;
Parallel resistance Rp: FX1N-4EX-BD = 15kΩ. If resistance Rp is less than the stated value, then add Rb.
See equation 1 for Rb calculation.
Alternatively; Current leakage: FX1N-4EX-BD= 1.5mA. If the current leakage(I) is greater than the stated
value, then add Rb. See equation 2 for Rb calculation.
4. Device allocation and program example
4.1 Device allocation
Each input of FX1N-4EX-BD is allocated a special auxiliary relay.
The ON/OFF state of each input is reflected in its corresponding special auxiliary relay.
• BX0 input of FX1N-4EX-BD : M8112
BX1 input of FX1N-4EX-BD : M8113
BX2 input of FX1N-4EX-BD : M8114
BX3 input of FX1N-4EX-BD : M8115
4.2 Program example
• Use a contact instruction for each special auxiliary relay.
• When the END instruction of the program is executed, the input process is completed.
REF (I/O refreshing) instruction cannot be used.
• When input information on FX1N-4EX-BD is used for the operand of each applied instruction as data, only four bit
data (K1M8112) can be used.
FX1N-4EX-BD
S/S
BX 4.3kΩ
BX
S/S
Rb
Rp
4.3kΩ
FX1N-4EX-BD
Rb
≤
4
Rp
15 -
Rp
Eqn 1 :
Rb ≤
6
I
- 1.5
Eqn 2 :
(k
Ω
)
(k
Ω
)
M8112
M8113
M0
M1
M8114
M8115
Y000
T0
K100

HEAD OFFICE : MITSUBISHI DENKI BLDG MARUNOUTI TOKYO 100-8310 TELEX : J24532 CABLE MELCO TOKYO
HIMEJI WORKS : 840, CHIYODA CHO, HIMEJI, JAPAN
5. Specifications
Caution
• Do not touch the terminals while power is ON.
Electric shock is possible.
• Cleaning and additional tightening of the terminal should only be done after turning OFF
the power supply.
Electric shock is possible while the power is ON.
• For repair please contact a service representative. Incorrect repair can cause malfunction
or electric shock.
• Install and uninstall FX1N-4EX-BD after turning OFF the power supply. Installing and
uninstalling while the power supply is ON may cause malfunction.
• Treat as industrial waste when disposing of the product.
5.1 Environmental specifications
The environmental specifications are equivalent to those of the PLC main unit. (Refer to the manual of the
PLC main unit.)
5.2 Power supply specifications
5.3 INPUT specifications
Item Specification
Consumption current 5V DC Supply by PLC.
24V DC 25mA or less. Supply from external power supply.
Item Specification
Input signal voltage 24V DC +20% -15%
Input signal current About 5mA/24V DC
Input ON current 3.5mA or more
Input OFF current 1.5mA or less
Input response time About 10mS
Input signal form Without voltage contact or opening collector Transistor
Circuit insulation Photo coupler
Operation display LED lighting when photo coupler is driven
Manual number: JY992D95001
Manual revision: A
Date : May 2001