FX2N-2LC SPECIAL FUNCTION BLOCK
USER’S GUIDE
JY992D85601C
Cautions on Safety
(Make sure to read this paragraph before using the unit.)
Thoroughly read this manual, a separate USER’S MANUAL and all attached documents of the connected
programmable controller (hereafter referred to as "PLC") and other related units before starting installation,
operation and inspection/maintenance of the temperature control block. Acquire the knowledge on
equipment, the information on safety and all cautions before using the temperature control block.
In this instruction manual, cautions on safety are classified as "DANGER" or "CAUTION".
This symbol indicates that incorrect handling may generate a dangerous situation which may lead
to death or serious injury.
This symbol indicates that incorrect handling may generate a dangerous situation which may lead
to medium or minor injury or physical damage.
Even an item classified as "CAUTION" may lead to a severe result depending on the situation.
Each item describes impor tant information. Make sure to observe each item marked with "DANGER" or
"CAUTION".
Carefully store the instruction manual offered together with the temperature control block so that the
operator can refer to it at any time necessary. Make sure to deliver the instruction manual to the end user.
We appreciate it very much that you have purchased the temperature control block FX2N-2LC for Mitsubishi
programmable controller.
This manual describes handling of the MELSEC-F Series Temperature Control Block FX
2N
-2LC.
Thoroughly read this manual and other manuals of related products, and sufficiently understand the
specifications before use.
Make sure to deliver this manual to the end user.
Brand and product names described by/in this manual are trademarks or registered trademark of the
irrespective ownes.
Related Manuals
If necessary, obtain them from the dealer from which you have purchased the FX2N-2LC.
Manual name Manual No.
Supplied with
product or
separately supplied
Description
FX
2N
-2LC
USER’S MANUAL
JY992D85601 Additional Manual
Describes the specification, wiring,
installation of FX
2N
-2LC.
FX
2N
HARDWARE MANUAL
JY992D66301 Supplied with product
Describes the specification, wiring
and installation of FX
2N
series PLC.
FX
2NC
HARDWARE MANUAL
JY992D76401 Supplied with product
Describes the specification, wiring
and installation of FX
2NC
series PLC.
FX
3U
Series
HARDWARE MANUAL
JY997D18801 Supplied with product
Describes the specification, wiring
and installation of FX
3U
series PLC.
FX
3U
Series
User’s Manual
- Hardware Edition
JY997D16501 Additional Manual
Describes the specification, wiring
and installation of FX
3U
series PLC.
FX SERIES
PROGRAMMING
MANUAL
ΙΙ
JY992D88101 Additional Manual
Describes the instructions of FX
1S
/
FX
1N
/FX2N/FX
2NC
series PLC.
FX
3U
/FX
3UC
Series
Programming Manual
- Basic & Applied
Instruction Edition
JY997D16601 Additional Manual
This manual explains the installations
of FX
3U
/FX
3UC
series PLC.
When you using the FX2N-2LC for the first time, a separate FX2N-2LC USER’S MANUAL is required.
Make sure to obtain the USER’S MANUAL from the dealer from which you have purchased the FX
2N
-
2LC, and safely use the FX
2N
-2LC.
1. Outline of Product
Cautions on design
• Install a safety circuit outside the PLC so that the entire system conservatively operates even if
an abnormality occurs in the external power supply or a failure occurs in the PLC.
If the safety circuit is installed inside the PLC, malfunction and erroneous output may cause
accidents.
Make sure to construct an emergency stop circuit, protection circuit, interlock circuit to prevent
damage to a machine or instrument outside the PLC.
• When the PLC or FX
2N
-2LC detects an abnormality such as a watch dog timer error or input
value error by the self-diagnosis circuit, and all outputs turn off. When an abnormality occurs in
the I/O control area which cannot be detected by the CPU in the PLC, output control may be
disabled.
Design external circuits and the structure so that the entire system conservatively operates in
such cases.
• When a failure occurs in a relay, transistor, triac, etc. in the FX
outputs may keep ON or OFF.
For output signals which may lead to severe accidents, design external circuits and the struc-
ture so that the entire system conservatively operates.
Caution on disposal
• When disposing of the unit, treat it as industrial waste.
The temperature control block
FX2N-2LC (hereafter referred to as "temperature control block" or "
equipped with two temperature input points and two transistor (open collector) output points is a special
block to control outputs of temperature inputs from thermocouples and platinum resistance thermometer
bulbs by PID control.
Connect the
FX2N-2LC to the
FX1N/
FX2N/
FX
2NC
/
FX3U Series PLC.
1) As input sensors, two thermocouples, two platinum resistance thermometer bulbs or one thermocouple
and one platinum resistance thermometer bulb are available.
2) Data can be read and written using FROM/TO instructions when the FX
FX
1N
/
FX2N/
FX
2NC
/
FX3U Series PLC.
(The FX
2N
-2LC performs arithmetic operation for PID control and output control. The PLC does not
have to perform such control.)
3) Disconnection of heaters can be detected by current detection.
4) The proportional band, the integral time and the derivative time can be easily set by auto tuning.
5) Channels are isolated from each other.
2. Outside Dimension
Extension
cable
Mounting hole 2-Φ4.5
DIN rail mounting hook
DIN rail
(width: 35 mm)
mounting groove
Connector for next
step extension cable
4(0.16)
OUT2
2N
24V
OUT1
POWER
FX -2LC
24+
24- O
87(3.43)
55(2.17)
90(3.54)
Status indicator LED
80(3.15)
PTB
PTB
24+
COM
24-
OUT1OUT2
CT
CT FG
PTA
TC-
TC+
PTB
PTB
CT
CT FG
PTA
TC-
TC+
CH1 CH2
Terminal block
Unit : mm (inch)
Mass: 0.3kg
Terminal screws M3 (0.12)
When attached to DIN rail When removed from DIN rail
FX2N-32ER
FX
2N
-4AD
FX
2N
-2LC
FX
2N
-2LC
FX2N-32MR
(X000 to X017)
FX
2N
-4AD
FX
2N
-2LC
FX
2N
-2LC
(Y000 to Y017)
Special block
No. 0
Special block
No. 1
(Y020 to Y037)
72456130
1611 1514 1710 12 13
14 171510 12 13
72456130
1611
OUT
IN
LX13X15
X10 X14 X16
24+N
COM X4
X7
Y4Y5Y6
COM3
Y10
Y11
Y12
Y13Y1Y2Y3
Y14
Y15
X3X2X1
POWER
BATT.V
RUN
CPU.E
PROG.E
POWER
A/D
24V
X0
X5
72456130
72456130
OUT
IN
L X1 X3 X5 X7
X6 X0 X2 X4 X6
24+N
COM X4
X7
COM4COM2Y4Y5Y6Y7 COM3Y0Y1Y2Y3COM1Y0Y1Y2Y3
Y4Y5Y6
Y7
X3X2X1
POWER
01234567
76543210
POWER
OUT1
24V
OUT2
POWER
OUT1
24V
OUT2
FX2N-32MR
FX2N-32ER
(X020 to X037)
Special block
No.2
1. Outline of Product
PTB
PTB
24+
COM
24-
OUT1OUT2
CT
CT FG
PTA
TC-
TC+
PTB
PTB
CT
CT FG
PTA
TC-
TC+
CH1 CH2
Terminal block
When attached to DIN rail When removed from DIN rail
FX2N-32ER
FX
2N
-4AD
FX
2N
-2LC
FX
2N
-2LC
FX2N-32MR
(X000 to X017)
FX
2N
-4AD
FX
2N
-2LC
FX
2N
-2LC
(Y000 to Y017)
Special block
No. 0
Special block
No. 1
(Y020 to Y037)
72456130
1611 1514 1710 12 13
14 171510 12 13
72456130
1611
OUT
IN
LX13X15
X10 X14 X16
24+N
COM X4
X7
Y4Y5Y6
COM3
Y10
Y11
Y12
Y13Y1Y2Y3
Y14
Y15
X3X2X1
POWER
BATT.V
RUN
CPU.E
PROG.E
POWER
A/D
24V
X0
X5
72456130
72456130
OUT
IN
L X1 X3 X5 X7
X6 X0 X2 X4 X6
24+N
COM X4
X7
COM4COM2Y4Y5Y6Y7 COM3Y0Y1Y2Y3COM1Y0Y1Y2Y3
Y4Y5Y6
Y7
X3X2X1
POWER
01234567
76543210
POWER
OUT1
24V
OUT2
POWER
OUT1
24V
OUT2
FX2N-32MR
FX2N-32ER
(X020 to X037)
Special block
No.2
3. Installation Method
2N
-2LC for Mitsubishi
2N
-2LC.
Cautions on design
• Install a safety circuit outside the PLC so that the entire system conservatively operates even if
an abnormality occurs in the external power supply or a failure occurs in the PLC.
If the safety circuit is installed inside the PLC, malfunction and erroneous output may cause
accidents.
Make sure to construct an emergency stop circuit, protection circuit, interlock circuit to prevent
damage to a machine or instrument outside the PLC.
• When the PLC or FX
2N
-2LC detects an abnormality such as a watch dog timer error or input
value error by the self-diagnosis circuit, and all outputs turn off. When an abnormality occurs in
the I/O control area which cannot be detected by the CPU in the PLC, output control may be
disabled.
Design external circuits and the structure so that the entire system conservatively operates in
such cases.
• When a failure occurs in a relay, transistor, triac, etc. in the FX
2N
-2LC or output unit of PLC,
outputs may keep ON or OFF.
For output signals which may lead to severe accidents, design external circuits and the structure so that the entire system conservatively operates.
Caution on disposal
• When disposing of the unit, treat it as industrial waste.
The temperature control block
equipped with two temperature input points and two transistor (open collector) output points is a special
block to control outputs of temperature inputs from thermocouples and platinum resistance thermometer
bulbs by PID control.
Connect the
FX2N-2LC to the
1) As input sensors, two thermocouples, two platinum resistance thermometer bulbs or one thermocouple
and one platinum resistance thermometer bulb are available.
2) Data can be read and written using FROM/TO instructions when the FX2N-2LC is connected to the
1N
FX
/
(The FX
2NC
FX2N/
FX
2N
-2LC performs arithmetic operation for PID control and output control. The PLC does not
have to perform such control.)
3) Disconnection of heaters can be detected by current detection.
4) The proportional band, the integral time and the derivative time can be easily set by auto tuning.
5) Channels are isolated from each other.
FX2N-2LC (hereafter referred to as "temperature control block" or "
FX2N/
2NC
FX
/
FX3U Series PLC.
FX1N/
/
FX3U Series PLC.
FX2N-2LC")
Cautions on installation
• Use the unit in the environment for the general specifications described in the manual.
Never use the unit in a place with dust, soot, conductive dust, corrosive gas or flammable gas,
a place exposed to high temperature, dew condensation or rain and wind or a place exposed
to vibration or impact.
If the unit is used in such a place, electrical shock, fire, malfunction, damage in the product or
deterioration of the product may be caused.
• Never drop cutting chips or electric wire chips into the ventilation window of the FX
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 PLC and the FX
If the sheet remains attached, fire, failure or malfunction may be caused.
• Securely connect connection cables such as extension cables and memory cassettes to specified
connectors.
Imperfect contact may cause malfunction.
The FX2N-2LC can be installed on the right side of an FX
extension unit.
2N
The FX
-2LC can be attached with a DIN rail DIN46277 (width: 35 mm) or directly attached to a panel
surface with screws (M4).
3.1 Installation on DIN rail
Align the upper side of the DIN rail mounting groove of the FX
), and push it on the DIN rail.(
mm) (
➀
When removing the FX
rail.(
)
➃
2N
-2LC, pull out downward the DIN rail mounting hook.(
2. Outside Dimension
24V
OUT1
OUT2
80(3.15)
Connector for next
step extension cable
90(3.54)
Status indicator LED
DIN rail mounting hook
2N
-
Extension
cable
4(0.16)
24+
24- O
Description
POWER
2N
/FX2N/FX
3U
/FX
-2LC.
2N
2NC
3UC
2N
series PLC.
2NC
3U
series PLC.
3U
series PLC.
series PLC.
series PLC.
-2LC.
series PLC.
1S
/
FX -2LC
2N
55(2.17)
Mounting hole 2-Φ4.5
87(3.43)
Unit : mm (inch)
Mass: 0.3kg
Terminal screws M3 (0.12)
DIN rail
(width: 35 mm)
mounting groove
3.2 Direct installation on panel surface
Screw-tighten the FX2N-2LC with M4 screws to a panel surface using two (upper and lower) mounting
holes provided on the left side of the FX
Assure the interval of 1 to 2 mm between a unit or block installed on the left side of the FX
4. Connection to PLC Main Unit
Connect the FX2N-2LC to the PLC main unit with an extension cable.
2N
FX
-2LC units are treated as special units of the PLC, and the special unit No. 0 to 7 is automatically
assigned to each FX
FROM/TO instructions.)
2N
One FX
-2LC unit occupies eight I/O points in the PLC main unit.
For the details of I/O assignment in the PLC, refer to the manual of the PLC main unit.
• Please check power supply specifications to decide the number of
to the
FX1N/
• To connect the FX2N-2LC unit to the FX
• For extension, an extension cable FX
required. Only one FX
( ) indicates the I/O No.
2N
-2LC unit from the one nearest to the PLC main unit. (These unit Nos. are used in
2NC
FX2N/
FX
/
FX3U extension unit and PLC.
0N
-65EC can be used in one system.
2N
-2LC or output unit of PLC,
FX2N-2LC")
2N
-2LC is connected to the
PTB
PTB
24+
COM
24-
OUT1OUT2
CT
CT FG
PTA
TC-
TC+
PTB
PTB
CT
CT FG
PTA
TC-
TC+
CH1 CH2
Terminal block
3. Installation Method
Cautions on installation
• Use the unit in the environment for the general specifications described in the manual.
Never use the unit in a place with dust, soot, conductive dust, corrosive gas or flammable gas,
a place exposed to high temperature, dew condensation or rain and wind or a place exposed
to vibration or impact.
If the unit is used in such a place, electrical shock, fire, malfunction, damage in the product or
deterioration of the product may be caused.
• Never drop cutting chips or electric wire chips into the ventilation window of the FX
2N
-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 PLC and the FX
2N
-2LC.
If the sheet remains attached, fire, failure or malfunction may be caused.
• Securely connect connection cables such as extension cables and memory cassettes to specified
connectors.
Imperfect contact may cause malfunction.
The FX2N-2LC can be installed on the right side of an FX1N/
FX2N/
FX
2NC
/
FX3U Series PLC main unit or
extension unit.
The FX
2N
-2LC can be attached with a DIN rail DIN46277 (width: 35 mm) or directly attached to a panel
surface with screws (M4).
3.1 Installation on DIN rail
Align the upper side of the DIN rail mounting groove of the FX2N-2LC with a DIN rail DIN46277 (width: 35
mm) (
➀
), and push it on the DIN rail.(➁)
When removing the FX
2N
-2LC, pull out downward the DIN rail mounting hook.(➂), and remove from DIN
rail.(
➃
)
3.2 Direct installation on panel surface
Screw-tighten the FX2N-2LC with M4 screws to a panel surface using two (upper and lower) mounting
holes provided on the left side of the FX
2N
-2LC.
Assure the interval of 1 to 2 mm between a unit or block installed on the left side of the FX
2N
-2LC.
When attached to DIN rail When removed from DIN rail
4. Connection to PLC Main Unit
Connect the FX2N-2LC to the PLC main unit with an extension cable.
FX
2N
-2LC units are treated as special units of the PLC, and the special unit No. 0 to 7 is automatically
assigned to each FX
2N
-2LC unit from the one nearest to the PLC main unit. (These unit Nos. are used in
FROM/TO instructions.)
One FX
2N
-2LC unit occupies eight I/O points in the PLC main unit.
For the details of I/O assignment in the PLC, refer to the manual of the PLC main unit.
• Please check power supply specifications to decide the number of
FX2N-2LC units that can be connected
to the
FX1N/
FX2N/
FX
2NC
/
FX3U extension unit and PLC.
• To connect the FX2N-2LC unit to the FX
2NC
Series PLC, the interface FX
2NC
-CNV-IF is required.
• For extension, an extension cable FX
0N
-65EC (650 mm) and the FX2N-CNV-BC sold separately are
required. Only one FX
0N
-65EC can be used in one system.
( ) indicates the I/O No.
FX2N-32ER
FX
2N
-4AD
FX
2N
-2LC
FX
2N
-2LC
FX2N-32MR
(X000 to X017)
FX
2N
-4AD
FX
2N
-2LC
FX
2N
-2LC
(Y000 to Y017)
Special block
No. 0
Special block
No. 1
(Y020 to Y037)
72456130
1611 1514 1710 12 13
14 171510 12 13
72456130
1611
OUT
IN
LX13X15
X10 X14 X16
24+N
COM X4
X7
Y4Y5Y6
COM3
Y10
Y11
Y12
Y13Y1Y2Y3
Y14
Y15
X3X2X1
POWER
BATT.V
RUN
CPU.E
PROG.E
POWER
A/D
24V
X0
X5
72456130
72456130
OUT
IN
L X1 X3 X5 X7
X6 X0 X2 X4 X6
24+N
COM X4
X7
COM4COM2Y4Y5Y6Y7 COM3Y0Y1Y2Y3COM1Y0Y1Y2Y3
Y4Y5Y6
Y7
X3X2X1
POWER
01234567
76543210
POWER
OUT1
24V
OUT2
POWER
OUT1
24V
OUT2
FX2N-32MR
FX2N-32ER
(X020 to X037)
Special block
No.2
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