•This manual contains te xt, diag rams and explanations which will guide the reader in the correct installation and operation of the communication facilities of FX series.
•Before attempting to install or use the communication facilities of FX series this manual
should be read and understood.
•If in doubt at an y stage of the installation of t he communication facilities of FX series always
consult a professional electrical engineer wh o is qualified and trained to the local and
national standards which apply to the installation site.
•If in doubt about the operation or use of the communication facilities of FX series please
consult the nearest Mitsubisi Electric dis tributor.
•This manual is subject to change without notice.
FX2N-2LC Tempereture Control Block
FX
2N
-2LC
Temperature Control Block
USER’S MANUAL
Manual number : JY992D85801
Manual revision : A
Date: January 2000
i
FX2N-2LC Tempereture Control Block
ii
FX2N-2LC Tempereture Control Block
FAX BACK
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iii
FX2N-2LC Tempereture Control Block
iv
FX2N-2LC Tempereture Control Block
Guidelines for the Safety of the User and Protection of the Temperature control
block FX2N-2LC.
This manual provides information for the use of the Temperature control block FX2N-2LC. The
manual has been writte n to be use d by trained and compe tent personnel. T he 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 w ith this manual should be of a com petent
nature, trained and qualified to the loc al and national sta ndards required to fulfill that
role. 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, tr ained 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 f amili ar with all ass ociated docume ntation for the said product.
All maintenance should be carried out in accordance with established safety practices.
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. The operators
should also be familiar with documentation which is connected with the actual operation
of the completed equipment.
Note :
Note: the term ‘completed equipment’ refers to a third party constructed device which
contains or uses the product associated with this manual.
Notes on the Symbols Used in this Manual
At various times through out this manual cer tain s ymbols will be used to highlight p oints of
information which are intended to ensure the users personal safety and protect the integrity of
equipment. Whenever any of the following symbols are encountered its associated note must
be read and understood. Each of the symbols used will no w be lis ted with a brief description of
its meaning.
Hardware Warnings
1) Indicates that the identified danger
2) Indicates that the identified danger could
WILL
cause physical and property damage.
POSSIBLY
cause physical and proper ty
damage.
3) Indicates a point of further interest or further explanation.
Software Warnings
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.
v
FX2N-2LC Tempereture Control Block
•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 diagr ams show n in this manual are int ended 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 illustra tive 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.
•Install a saf et y circui t outs ide the PLC or the temper at ure cont rol block FX2N-2LC so that
the entire system conservatively operates even if an abnormality occurs in the external
power supply or a failure occurs in the PLC or the FX
If a safety circuit is installed inside the PLC, malfu nction and erroneous output may
cause accidents.
1) Make sure to const ruct an emergency stop circuit, protection circui t or interlock circuit to
prevent damages of a machine, etc. outside the PLC or the FX
2N
-2LC.
2N
Introduction 1
1
-2LC.
2) If the PLC or the FX
-2LC detects an abnormality such as a watch dog timer error or
2N
input value error by the self-diagnosis function or when an abnormality occurs in the I/O
control area, etc. which cannot be detected by the CPU in the PLC, output control may
be disabled.
Design external circuits and structure so that the entire system conservatively operates
in such cases.
3) If a failure occurs in a relay, transistor, TRIAC, etc. in an output unit of the FX
2N
the PLC, outputs may keep ON or OFF.
For output sig nals whic h ma y lead t o se v er e accidents , design e xt ernal circuits and structure so that the entire system conservatively operates.
Cautions on installation
•Use the unit in the environment for the general specifications described in the manual.
Nev er use the unit in a place with dusts , soot, conducti ve dusts , corrosive gas or flammable gas, place exposed to high temperature, dew condensation or rain and wi nd or place
exposed to vibration or impact.
If the unit is used in such a place, electrical shock, fire, malfunction, damages in the unit
or deterioration of the unit ma y be caused.
•Never drop cutting chips or electric wire chips into the ventilation window of the FX
2LC while drilling screw holes or wiring cables.
Such chips may cause fire, failure or malfunction.
-2LC or
-
2N
•After finishing installation, remove a dust preventing sheet adhered on the ventilation
window of the PC and the FX
2N
-2LC.
If the sheet remains attached, fire, failure or malfunction may be caused.
•Securely connect cables such as extension cables and memory cassettes to specified
connectors.
Imperfect contact may cause malfunction.
Caution on disposal
•When disposing of the unit, treat it as industrial waste.
1-1
FX2N-2LC Temperature Control Block
1.1Outline of product
The temperature control block FX2N-2LC (hereafter referred to as "temperature control block"
or "FX
output points is a special block to read temperature signals from thermocouples and platinum
resistance thermometer bulbs, and pe rform PID output control.
Connect the FX
1) As input sensors, two thermocouples, two platinum resistance thermometer bulbs or one
-2LC") equipped with two temperature input points and two transistor (open collector)
2N
-2LC to the FX
2N
thermocouple and one platinum resistance thermometer bulb are available.
2N/2NC
Introduction 1
Series PC.
2) Data can be written and read using FROM/TO instructions when the FX
to the FX
(The FX
2N
Series PC.
2N/2NC
-2LC performs arithmetic operation for PID control and output control. You do not
-2LC is connected
2N
have t o creat e sequence programs for PID operation.)
3) Disconnection of heaters can be detected by current detection (CT).
4) The proportional band, the integral time and the derivative time can be easily set by auto
tuning.
5) Channels are isolated against each other.
1-2
FX2N-2LC Temperature Control Block
Product Configuration 2
1Introduction
2Product Configuration2
3Specifications
4Wiring
5Introduction of Functions
6Alarm
7Buffer Memory (BFM)
8Program Example
9Diagnostic
FX2N-2LC Temperature Control Block
Product Configuration 2
FX2N-2LC Temperature Control Block
2.Product Configuration
2.1Outside dimension
4
Extension
cable
24+
24- O
Connector for next step
extension cable
Product Configuration 2
2
FX2N-2LC
Mounting
hole
φ
2-
45
55
2.2Name of each part
➀
➁
24+
24- O
➂
POWER
24V
OUT1
OUT2
DIN rail
90
80 ±0.5
(mounting dimension)
Status indicator LED
DIN rail
(width:
35 mm)
mounting
groove
87
Unit: mm
Mass: kg
Outer color: Munsell 0.08GY / 7.64 / 0.81
Terminal block
24+COM
24-
OUT1OUT2
POWER
FX2N-2LC
24V
OUT1
OUT2
➄
①
:PC connection cable
②
:Screw mounting hole
③
:Status indicator LED
④
:DIN rail mounting g roove (DIN rail width: 35 mm)
⑤
:DIN rail mounting hook
⑥
:Connector for next step ex tension cable
➅
➂
CT
➃
CH1CH2
CT FG
PTA
PTB
TC+
PTB
TC-
➄
CT
CT FG
PTA
PTB
TC+
PTB
TC-
2-1
FX2N-2LC Temperature Control Block
2.3Status indication
Table 2.1:
LED nameIndicationDescription
POWER
24V
OUT1
OUT2
Lit (green)5 V power is supplied from PC main unit.
Extinguished5 V power is not supplied from PC main unit.
Lit (red)24 V power is supplied from outside.
Extinguished24 V power is not supplied from outside.
Lit (red)OUT1 output is ON.
ExtinguishedOUT1 output is OFF.
Lit (red)OUT2 output is ON.
ExtinguishedOUT2 output is OFF.
Product Configuration 2
2-2
FX2N-2LC Temperature Control Block
2.4Installation method
Product Configuration 2
The FX2N-2LC can be installed on the right side of an FX2N/
Series extension unit or another extension block.
2NC
The FX
-2LC can be attached with a DIN rail DIN46277 ( wid th: 35 mm) or directl y attached to
2N
Series PLC ba sic unit, FX2N/
2NC
a panel surface with scr ews (M4).
•Installation on DIN rail
Align the upper side of the DIN rail mounting groove of the FX
DIN46277 (width: 35 mm) (①), and push the FX
When removing the FX
remove the FX
-2LC (④).
2N
-2LC, pull out downward the DIN rail mounting hook (③), then
2N
-2LC on the DIN rail (②).
2N
-2LC with a DIN rail
2N
When attaching to DIN railWhen removing from DIN rail
➀
➃
2
➁
➂
•Direct installation on panel surface
Screw-tighten the FX
mounting holes provided on the left side of the FX
-2LC with M4 screws to a panel surface using two (upper and lower)
2N
-2LC.
2N
Assure the interval of 1 to 2 mm between a unit or block installed on the left side of the
FX
-2LC.
2N
Cautions on installation
•Use the unit in the environment for the general specifications described in the manual.
Nev er use the unit in a place with dusts , soot, conducti ve dusts , corrosive gas or flammable gas, place exposed to high temperature, dew condensation or rain and wi nd or place
exposed to vibration or impact.
If the unit is used in such a place, electrical shock, fire, malfunction, damages in the unit
or deterioration of the unit ma y be caused.
•Never drop cutting chips or electric wire chips into the ventilation window of the FX
2LC while drilling screw holes or wiring cables.
Such chips may cause fire, failure or malfunction.
•After finishing installation, remove a dust preventing sheet adhered on the ventilation
window of the PC and the FX
If the sheet remains attached, fire, failure or malfunction may be caused.
2N
-2LC.
2N
-
•Securely connect cables such as extension cables and memory cassettes to specified
connectors.
Imperfect contact may cause malfunction.
2-3
FX2N-2LC Temperature Control Block
2.5Connection to PC Main Unit
Connect the FX2N-2LC to the PC main unit with an extension cabl e.
FX
-2LC units are treated as special blocks of the PLC, and the special block No. 0 to 7 is
2N
automatically assigned to each FX
(These unit Nos. are used in FROM/TO instructions.)
One FX
For the details of I/O assignment in the PC, refer to the manual of the FX
-2LC unit occupies eight I/O points in the PC main unit.
2N
Product Configuration 2
-2LC unit from the one nearest to the PLC basic unit.
2N
Series PC.
2N/2NC
FX2N-32MR
(X000 to X017)
X3X2X1
FX2N-32MR
Y4Y5Y6
Y10
COM3
X10X14 X16
X7
IN
OUT
Y12
Y11
Y13Y1Y2Y3
14 171510 12 13
Y14
COMX4
LX13X15
24+N
(Y000 to Y017)
72456130
1611
72456130
16111514 1710 12 13
Y15
FX2N-4AD
POWER
RUN
BATT.V
PROG.E
CPU.E
FX2N-4AD
Special
block
No. 0
POWER
A/D
24V
FX2N-2LC
POWER
FX2N-2LC
24V
OUT1
OUT2
Special
block
No. 1
(X020 to X037)
(Y020 to Y037)
( ) indicates the I/O No. assignment in the PC main unit.
•Up to eight FX
units can be connected to the FX
•When connecting the FX
-2LC units can be connected to the FX2N Series PC. Up to four FX2N-2LC
2N
Series PC.
2NC
-2LC unit to the FX
2N
Series PC, the interface FX
2NC
required.
(When connecting the FX
-2LC unit to the FX2N Series PC, the interface FX
2N
not required.)
FX2N-32MR
X0
X6 X0 X2 X4 X6
COMX4
24+N
X3X2X1
FX2N-32ER
X5
X7
IN
01234567
OUT
76543210
72456130
72456130
Y4Y5Y6
COM4COM2Y4Y5Y6Y7 COM3Y0Y1Y2Y3COM1Y0Y1Y2Y3
LX1X3X5X7
POWER
Y7
FX2N-2LC
POWER
FX2N-2LC
24V
OUT1
OUT2
Special
block
No.2
-CNV-IF is
2NC
-CNV-IF is
2NC
•For extension, an extension cable FX
rately are required.
Only one FX
-65EC can be used per system.
0N
-65EC (650 mm) and the FX
0N
-CNV-BC sold sepa-
2NC
2-4
FX2N-2LC Temperature Control Block
Specifications 3
1Introduction
2Product Configur ation
3Specifications3
4Wiring
5Introduction of Functions
6Alarm
7Buffer Memory (BFM)
8Program Example
9Diagnostic
FX2N-2LC Temperature Control Block
Specifications 3
FX2N-2LC Temperature Control Block
3.Specifications
3.1Environmental specifications
Table 3.1:
ItemSpecifications
Withstand voltage
500 VAC for 1 minute (between analog input terminal and grounding terminal)
Specifications 3
Other environmental specifications are equivalent to those for the PC main unit. (Refer to the
manual of the PC main unit.)
3.2Power supply specifications
Table 3.2:
ItemSpecifications
Driving power supply24 VDC (-15% to +10%), input from driving power supply terminal
Power supply for communi-
cation
Current consumption24 VDC, 55 mA and 5 VDC, 70 mA
Insulation method
Number of occupied I/O
points
5 VDC (supplied from inside of PC main unit)
Analog input area and PC are insulated by photocoupler.
Power supply and analog input ar e insula ted by DC/DC converter.
(Channels are not insulated each other.)
8 points in total (including input points and output points)
3
3-1
FX2N-2LC Temperature Control Block
3.3Performance specifications
Table 3.3:
ItemDescription
Control method
Control operation period500 ms
Set temperature rangeEquivalent to input range (Refer to 7.2.33)
Heater disconnection detection
Operation mode
Self-diagnosis function
MemoryBuilt-in EEPROM (Number of times of overwrite: 100,000 times)
POWER
24V
Status
indication
OUT1
OUT2
Lit (green)5 V power is supplied from PC main unit.
Extinguished 5 V power is not supplied from PC main unit.
Lit (red)24 V power is supplied from outside.
Extinguished 24 V power is not supplied from outside.
Lit (red)OUT1 output is ON.
Extinguished OUT1 output is OFF.
Lit (red)OUT2 output is ON.
Extinguished OUT2 output is OFF.
Specifications 3
Two-position control, PID control (with auto tuning function), PI
control
Alarm is detected in accordance with setting of buffer memory.
(Variable within range from 0.0 to 100.0 A.).
0: Measured value monitor
1: Measured value monitor + Temperature alarm
2: Measured value monitor + Temperature alarm + Control
(Selected by buffer memory)
Adjustment data and input value are checked by watch dog timer.
When abnormality is detected, transistor output turns off.
3-2
FX2N-2LC Temperature Control Block
3.4Input specifications
Table 3.4:
ItemDescription
Number of input points2 points
Input type
Measurement precision
Cold contact tempera-
Temperature
input
CT input
ture compensation error
Resolution
Sampling period500 mS
Effect of external resistance
Input impedance
Sensor currentApprox. 0.3 mA
Allowable input lead wire
resistance
Operation when input is
disconnected
Operation when input is
short-circuited
Number of input points2 points
Current detector
Heater
current
measured
value
Measurement precision
Sampling period1 second
Thermocou-
ple
Resistance
thermome-
ter bulb
When CTL-
12 is used
When CTL-
6 is used
Specifications 3
K, J, R, S, E, T, B, N, PLII, WRe5=26, U, L
Pt100, JPt100
± 0.7 % of range span ± 1 digit
(± 0.3 % of range span ± 1 digit when ambient temperature is
23 °C ± 5 °C)
However, 0 to 399 °C (0 to 799 °F) in B inputs as well as 0 to
32 °F in PLII and WRe5-26 inputs are outside precision guarantee range.
Within ± 1.0 °C
However, within ± 2.0 °C while input value is -100 to -150 °C
within ± 3.0 °C while input value is -150 to -200 °C
0.1 °C (0.1 °F) or 1 °C (1 °F)
(Varies depending on input range of used sensors.)
Approx. 0.35 µV/
1 Μ Ω
10 Ω or less
Upscale
Downscale
CTL-12-S36-8 or CTL-6-P-H
(manufactured by U.R.D. Co., Ltd.)
0.0 to 100.0 A
0.0 to 30.0 A
Larger one between ± 5 % of input value and 2 A
(excluding precision of current detector)
or more
Ω
3
3-3
FX2N-2LC Temperature Control Block
3.5Input range
Table 3.5:
Sensor typeKJRS
-200.0 to 200.0 °C
-100.0 to 400.0 °C
Input range
Sensor typeETBN
Input range
-100 to 1300 °C
-100 to 2400 °F
-200.0 to 200.0 °C
-100 to 800 °F
0 to 1000 °C
0 to 1800 °F
-200.0 to 200.0 °C
-100.0 to 400.0 °C
-100.0 to 800.0 °C
-100 to 1200 °C
-100 to 1600 °F
-100 to 2100 °F
-200.0 to 200.0 °C
-200.0 to 400.0 °C
0 to 400.0 °C
-300.0 to 400.0 °F
-300.0 to 700.0 °F
0.0 to 700.0 °F
0 to 1700 °C
0 to 3200 °F
0 to 1800 °C
0 to 3000 °F
Specifications 3
0 to 1700 °C
0 to 3200 °F
0 to 1300 °C
0 to 2300 °F
Sensor typePL IIWRe5-26UL
Input range
Sensor typeKJ
Input range
0 to 1200 °C
0 to 2300 °F
-50.0 to 150.0 °C
-200.0 to 500.0 °C
-300.0 to 300.0°F
-300 to 900 °F
0 to 2300 °C
0 to 3000 °F
-50.0 to 150.0 °C
-200.0 to 600.0 °C
-300.0 to 300.0°F
-300 to 1100 °F
-200.0 to 600.0 °C
-300.0 to 700.0 °F
0.0 to 900.0 °C
0 to 1600 °F
•When B is used, 0 to 399 °C (0 to 799 °F) is outside the precision compensation range.
•When PLII is used, 0 to 32 °F is outside the precision compensation range.
•When WRe5 to WRe26 are used, 0 to 32 °F is outside the precision compensation range.
3-4
FX2N-2LC Temperature Control Block
3.6Output specifications
Table 3.6:
ItemDescription
Number of output points2 points
Output methodNPN open collector transistor output
Rated load voltage5 to 24 VDC
Maximum load voltage30 VDC or less
Maximum load current100 mA
Leak current in OFF status0.1 mA or less
Maximum voltage drop in ON status 2.5 V (maximum) or 1.0 V (typical) at 100 mA
Control output cycle30 seconds (Variable within range from 1 to 100 seconds)
Specifications 3
3
3-5
FX2N-2LC Temperature Control Block
Specifications 3
3-6
FX2N-2LC Temperature Control Block
Wiring 4
1Introduction
2Product Configur ation
3Specifications
4Wiring4
5Introduction of Functions
6Alarm
7Buffer Memory (BFM)
8Program Example
9Diagnostic
FX2N-2LC Temperature Control Block
Wiring 4
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