三菱plc-FX3u-4lc
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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.
Warranty
Mitsubishi will not be held liable for damage caused by factors found not to be
the cause of Mitsubishi; opportunity loss or lost profits caused by faults in the
Mitsubishi products; damage, secondary damage, accident compensation
caused by special factors unpredictable by Mitsubishi; damages to products
other than Mitsubishi products; and to other duties.
For safe use
This product has been manufactured as a general-purpose part for general
industries, and has not been designed or manufactured to be incorporated in
a device or system used in purposes related to human life.
Before using the product for special purposes such as nuclear power, electric
power, aerospace, medicine or passenger movement vehicles, consult with
Mitsubishi Electric.
This product has been manufactured under strict quality control. However
when installing the product where major accidents or losses could occur if the
product fails, install appropriate backup or failsafe functions in the system.
•
•
•
HEAD OFFICE
HIMEJI WORKS
: TOKYO BUILDING, 2-7-3 MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310,
JAPAN
: 840, CHIYODA CHO, HIMEJI, JAPAN
Side
B
Side
A
Side
B
JAPANESE ENGLISH
JY997D38901A
Safety Precaution
(Read these precautions before use.)
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.
Associated Manuals
How to obtain manuals
For product manuals or documents, consult with the Mitsubishi Electric dealer
from who you purchased your product.
Certification of UL, cUL standards
FX3U-4LC units comply with the UL standards (UL, cUL).
UL, cUL File Number: E95239
Regarding the standards that comply with the main unit, please refer to either the
FX series product catalog or consult with your nearest Mitsubishi product provider.
Compliance with EC directive (CE Marking)
This note does not guarantee that an entire mechanical module produced in
accordance with the contents of this note will comply with the following standards.
Compliance to EMC directive and LVD directive for the entire mechanical module
should be checked by the user / manufacturer. For more information please
consult with your nearest Mitsubishi product provider.
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.
Manual name Manual No. Description
FX
3U-4LC
User's Manual
JY997D39101
MODEL CODE:
09R625
Describes details of the FX
3U-
4LC temperature control block.
FX
3G Series
User’s Manual
- Hardware Edition
JY997D31301
MODEL CODE:
09R521
Explains the FX3G Series PLC
specifications for I/O, wiring,
installation, and maintenance.
FX
3U Series
User’s Manual
- Hardware Edition
JY997D16501
MODEL CODE:
09R516
Explains the FX3U Series PLC
specifications for I/O, wiring,
installation, and maintenance.
FX
3UC Series
User’s Manual
- Hardware Edition
JY997D28701
MODEL CODE:
09R519
Explains the FX3UC Series PLC
specifications for I/O, wiring,
installation, and maintenance.
Regarding the standards that comply with the main unit, please refer to either the FX
series product catalog or consult with your nearest Mitsubishi product provider.
Requirement for Compliance with EMC directive
The following products have shown compliance through direct testing (of the identified
standards below) and design analysis (through the creation of a technical construction
file) to the European Directive for Electromagnetic Compatibility (2004/108/EC) when
used as directed by the appropriate documentation.
Attention
• This product is designed for use in industrial applications.
• Manufactured by:
Mitsubishi Electric Corporation
2-7-3 Marunouchi, Chiyoda-ku, Tokyo, 100-8310 Japan
• Manufactured at:
Mitsubishi Electric Corporation Himeji Works
840 Chiyoda-machi, Himeji, Hyogo, 670-8677 Japan
• Authorized Representative in the European Community:
Mitsubishi Electric Europe B.V.
Gothaer Str. 8, 40880 Ratingen, Germany
Type: Programmable Controller (Open Type Equipment)
Models: MELSEC FX
3U series manufactured
from December 1st, 2009 FX
3U-4LC
Caution for EC Directive
The FX3U-4LC have been found to be compliant to the European standards in the
aforesaid manual and directive. However, for the very best performance from what are
in fact delicate measuring and controlled output device Mitsubishi Electric would like to
make the following points;
As analog devices are sensitive by nature, their use should be considered carefully.
For users of proprietary cables (integral with sensors or actuators), these users should
follow those manufacturers installation requirements.
Mitsubishi Electric recommend that shielded cables should be used. If NO other EMC
protection is provided, then users may experience temporary loss or accuracy between
±10% in very heavy industrial areas.
However, Mitsubishi Electric suggest that if adequate EMC precautions are followed for
the users complete control system, users should expect accuracy as specified in this
manual.
• Sensitive analog cable should not be laid in the same trunking or cable conduit as
high voltage cabling. Where possible users should run analog cables separately.
• Good cable shielding should be used. When terminating the shield at Earth
- ensure that no earth loops are accidentally created.
• When reading analog values, EMC accuracy can be improved out by averaging the
readings. This can be achieved either through functions on the analog special
function blocks or through a users program in the FX
3G/FX3U/FX3UC Series PLC
main unit.
• Installation in Enclosure
Programmable logic controllers are open-type devices that must be installed and
used within conductive control cabinets. Please use the programmable logic
controller while installed within a conductive shielded control cabinet. Please secure
the cabinet door to the control cabinet (for conduction). Installation within a control
cabinet greatly affects the safety of the system and aids in shielding noise from the
programmable logic controller.
Standard Remark
EN61131-2:2003
Programmable controllers
- Equipment requirements
and tests
Compliance with all relevant aspects of the
standard.
EMI
• Radiated Emissions
• Conducted Emissions
EMS
• Radiated electromagnetic field
• Fast Transient burst
• Electrostatic discharge
• High-energy surge
• Voltage drops and interruptions
• Conducted RF
• Power frequency magnetic field
1. Introduction
The temperature control block FX3U-4LC (hereinafter called 4LC) equipped with 4
channel input (thermocouples, resistance thermometer and micro voltage input), 4
points output (open collector transistor) and 4 points CT input is a special function
block for thermometer control.
→ For details, refer to the FX
3U-4LC User's Manual.
1.1 Incorporated Items
Check to ensure the following product and items are included in the package
1.2 External Dimensions and Part Names
1.3 Power and status LEDs
Included Item
FX
3U-4LC 1 unit
Special unit/block No. label 1 sheet
Dust proof protection sheet 1 sheet
Manuals (Japanese version, English version) 1 manual each
[1] Extension cable [6] Status LEDs (Red)
[2] Direct mounting hole
2 holes of 4.5 (0.18")
(mounting screw: M4 screw)
[7] Extension connector
[3] Terminal block covers [8] Nameplate
[4] Terminal cover [9] DIN rail mounting groove
(DIN rail: DIN46277, 35mm
(1.38") width)
[5] Power LED (green) [10] DIN rail mounting hook
LED
display
LED
color
Status Description
POWER Green
OFF
Power is not being supplied from the internal
power supply (5V DC).
ON
Power is being supplied from the internal power
supply (5V DC).
24V Red
OFF
Power is not being supplied from the external
power supply (24V DC).
ON
Power is being supplied from the external power
supply (24V DC).
OUT1 to
OUT4
Red
OFF OUT1 to OUT4 output OFF
ON OUT1 to OUT4 output ON
2-Ø4.5 mounting holes
[1] [2] [4]
[5] [6]
82(3.23")
(mounting hole pitch)
90(3.55")
[4]
[8]
[9]
[10]
86(3.39")
9(0.36")
Unit: mm(inches)
MASS(Weight) : 0.4kg(0.88lbs)
Terminal screws: M3
82(3.23")
(mounting hole pitch)
90(3.55")
[7]
[3]
[3]
1.4 Terminal Layout
2. Installation
For installation details, refer to the following manuals.
→ Refer to the FX
3U-4LC User's Manual.
2.1 Connection with PLC
The 4LC connects on the right side of an PLC main unit or extension units/blocks
(including special function units/blocks).
For connection to an FX3UC Series PLC or FX2NC Series PLC extension block, an
FX
2NC-CNV-IF or FX3UC-1PS-5V is required.
For details, refer to the respective PLC manual.
→ Refer to the FX
3G Series User's Manual - Hardware Edition.
→ Refer to the FX
3U Series User's Manual - Hardware Edition.
→ Refer to the FX
3UC Series User's Manual - Hardware Edition.
2.2 Mounting
The product is mounted by the following method.
• DIN rail mounting
• Direct mounting (mounting screw: M4 screw)
For details, refer to the respective PLC manual.
→ Refer to the FX
3G Series User's Manual - Hardware Edition.
→ Refer to the FX
3U Series User's Manual - Hardware Edition.
→ Refer to the FX
3UC Series User's Manual - Hardware Edition.
3. Wiring
For wiring details, refer to the following manuals.
→ Refer to the FX
3U-4LC User's Manual.
INSTALLATION
PRECAUTIONS
• Make sure to shut down all phases of the power supply externally before
installing.
Failure to do so may cause electric shock or damage to the product.
INSTALLATION
PRECAUTIONS
• Use the product within the generic environment specifications described in
PLC main unit manual (Hardware Edition).
Never use the product in areas with excessive dust, oily smoke, conductive
dusts, corrosive gas (salt air, Cl
2, H2 S, SO2, or NO2), flammable gas,
vibration or impacts, or expose it to high temperature, condensation, or rain
and wind.
If the product is used in such conditions, electric shock, fire, malfunctions,
deterioration or damage may occur.
• Do not touch the conductive parts of the product directly.
Doing so may cause device failures or malfunctions.
• Install the product securely using a DIN rail or mounting screws.
• Install the product on a flat surface.
If the mounting surface is rough, undue force will be applied to the PC board,
thereby causing nonconformities.
• When drilling screw holes or wiring, make sure that cutting and wiring debris
do not enter the ventilation slits.
Failure to do so may cause fire, equipment failures or malfunctions.
• Be sure to remove the dust proof sheet from the PLC's ventilation port when
installation work is completed.
Failure to do so may cause fire, equipment failures or malfunctions.
• Connect extension cables securely to their designated connectors.
Loose connections may cause malfunctions.
WIRING
PRECAUTIONS
• Make sure to cut off all phases of the power supply externally before
attempting wiring work.
Failure to do so may cause electric shock.
24+ 24-
CT FG
CT
CT FG
CT
OUT1 OUT2
COM1
OUT3 OUT4CT FG CT FG
CT CT COM2
CH1
CH4
CH2
CH3
PTA/ /
PTB/TC-/COM PTB/TC-/COM
PTB/TC+/VL+
PTA/ /
PTB/TC+/VL+
PTB/TC-/COMPTB/TC-/COM
PTB/TC+/VL+ PTB/TC+/VL+
PTA/ / PTA/ /
3.1 Example of Input/output Wiring
*1 24V DC service power supply of the FX3G/FX3U Series PLC can also be
used.
*2 When using a thermocouple, use specified compensating lead wires.
*3 When you use a resistance thermometer sensor, the resistance of the lead
wire is low, use a wire without a resistance difference between the lead
wire.
*4 Make sure to short-circuit the 'PTB' and 'PTB' terminals when a 2-wire
resistance thermometer sensor is input.
3.2 Grounding
Ground the cables as follows
• The grounding resistance should be 100Ω or less.
• Independent grounding should be established whenever possible.
Independent grounding should be performed for best results.
When independent grounding is not configured, perform "shared grounding" as
shown in the following figure. For details, refer to the respective PLC manual.
→ Refer to the FX
3G Series User's Manual - Hardware Edition.
→ Refer to the FX
3U Series User's Manual - Hardware Edition.
→ Refer to the FX
3UC Series User's Manual - Hardware Edition.
WIRING
PRECAUTIONS
• Connect the AC power supply to the dedicated terminals specified in this
manual.
If an AC power supply is connected to a DC input/output terminal or DC
power supply terminal, the PLC will burn out.
• Do not wire vacant terminals externally.
Doing so may damage the product.
• Use class D grounding (grounding resistance of 100Ω or less) with a wire of
2mm
2
or thicker on the grounding terminal of the PLC.
However, do not connect the ground terminal at the same point as a heavy
electrical system.
• When drilling screw holes or wiring, make sure cutting or wire debris does
not enter the ventilation slits.
Failure to do so may cause fire, equipment failures or malfunctions.
• Make sure to observe the following precautions in order to prevent
malfunctions under the influence of noise.
- Do not bundle the power line or twisted shielded cable together with or lay
it close to the main circuit, high-voltage line, or load line.
Otherwise, noise disturbance and/or surge induction are likely to take
place. As a guideline, lay the control line at least 100mm (3.94") or more
away from the main circuit, high-voltage line, or load line.
- Ground the shield wire or shield of the shielded cable at one point on the
PLC. However, do not use common grounding with heavy electrical
systems.
• Make sure to properly wire to the terminal blocks in accordance with the
following precautions.
Failure to do so may cause electric shock, a short-circuit, wire breakage, or
damage to the product.
- The disposal size of the cable end should follow the dimensions
described in the FX
3U-4LC User's Manual
- Tightening torque should follow the specifications in the FX
3U-4LC User's
Manual
COM
VL+
FG
24+
24-
TC-
FG
TC+
Shielded wire
Shielded wire
Shielded wire
PTB
PTB
PTA
FG
PTB
PTB
PTA
FG
Shielded wire
OUT1
COM1
Load
Output
Voltage input
Thermocouple
Power supply
*4
ch
ch
ch
ch
: represents the channel number.
ch
FX
3U
-4LC
24V DC
*1
Compensating lead wire
*2
Pt1000
(2-wire type
*3
)
Pt100 or Pt1000
(3-wire type
*3
)
Grounding
(Ground
resistance:
100Ω or less)
• The grounding point should be close to the 4LC, and all grounding wires should be
as short as possible.
4. Specification
For details on specifications, refer to the following manual.
→ Refer to the FX
3U-4LC User's Manual.
4.1 Applicable PLC
The version number can be checked by reading the last three digits of device D8001.
*1
An FX2NC-CNV-IF or FX3UC-1PS-5V is necessary to connect the 4LC with the
FX3UC PLC.
*2 Up to 7 units can be connected to the FX3UC-32MT-LT(-2) PLC.
4.2 General Specifications
Items other than the following are equivalent to those of the PLC main unit.
For general specifications, refer to the manual of the PLC main unit.
→ Refer to the FX
3G Series User's Manual - Hardware Edition.
→ Refer to the FX
3U Series User's Manual - Hardware Edition.
→ Refer to the FX
3UC Series User's Manual - Hardware Edition.
DESIGN
PRECAUTIONS
• Make sure to include the following safety circuits outside the PLC to ensure safe
system operation even during external power supply problems or PLC failure.
Otherwise, malfunctions may cause serious accidents.
1) Above all, the following components should be included: an emergency stop
circuit, a protection circuit, an interlock circuit for opposite movements (such
as normal vs. reverse rotation), and an interlock circuit (to prevent damage to
the equipment at the upper and lower positioning limits).
2) Note that when the PLC CPU detects an error, such as a watchdog timer
error, during self-diagnosis, all outputs are turned off. Also, when an error that
cannot be detected by the PLC CPU occurs in an input/output control block,
output control may be disabled.
External circuits and mechanisms should be designed to ensure safe
machinery operation in such a case.
3) Note that when an error occurs in a relay, triac or transistor output device, the
output could be held either on or off.
For output signals that may lead to serious accidents, external circuits and
mechanisms should be designed to ensure safe machinery operation in such
a case.
DESIGN
PRECAUTIONS
• Do not bundle the control line together with or lay it close to the main circuit or
power line. As a guideline, lay the control line at least 100mm (3.94") or more
away from the main circuit or power line.
Noise may cause malfunctions.
• Ground the shield wire or shield of the shielded cable at one point on the PLC.
However, do not ground them at the same point as the high-voltage lines.
Noise may cause malfunctions.
• Install module so that excessive force will not be applied to the terminal blocks.
Failure to do so may result in wire damage/breakage or PLC failure.
DISPOSAL
PRECAUTIONS
• Please contact a certified electronic waste disposal company for the
environmentally safe recycling and disposal of your device.
TRANSPORT AND
STORAGE PRECAUTIONS
• The product is a precision instrument. During transportation, avoid any impacts.
Failure to do so may cause failures in the product. After transportation, verify the
operations of the product.
Model name Applicability
FX
3G Series PLC Ver. 1.00 and later (Up to 8 blocks can be extended)
FX
3U Series PLC Ver. 2.20 and later (Up to 8 blocks can be extended)
FX
3UC Series PLC
*1
Ver. 2.20 and later (Up to 8 blocks can be extended
*2
)
Item Specification
Dielectric withstand
voltage
500V AC for one minute
Between all terminals and ground
terminal
Insulation
resistance
5MΩ or more by 500V DC
megger
4LC 4LC 4LC
Other
equipment
Other
equipment
Other
equipment
Shared grounding
Good condition
Common grounding
Not allowed
Independent grounding
Best condition
4.3 Power Supply Specification
4.4 Performance Specification
4.5 Input Specification
*1 A different input can be selected for each channel.
*2 Measurement accuracy differs depending on the type of input, and the input
range. For specification details, refer to the following manuals.
→ Refer to the FX
3U-4LC User's Manual.
Item Specification
Interface driving power
supply
24V DC +20% -15% 50mA
Connect a 24V DC power supply to the terminal block.
CPU driving power
5V DC 160mA
5V DC power is supplied internally from the main unit.
Item Specification
Control method
Two-position control, PID control,
Heating/cooling PID control, Cascade control
Control operation period 250ms/4ch
Set temperature range Refer to section 4.7
Heater disconnection
detection
Alarm is detected by buffer memory
(Variable within range from 0.0 to 100.0A.)
Operation mode
0 : Not used, 1 : Monitor, 2 : Monitor+Alarm,
3 : Monitor+Alarm+Control (Selected by buffer memory)
Self-diagnosis function
Adjustment data check, input value check, watch dog
timer check.
Memory
Built-in EEPROM
(Number of times of overwrite : 100.000 times)
Insulation method
• The photocoupler is used to insulate the analog input
area from the PLC.
• The DC/DC converter is used to insulate the power
supply from the analog inputs.
• Channels are insulated from each other.
Number of I/O occupied
points
8 points
(Taken from either the input or output points of the PLC.)
Item Specification
Number of input points 4 points
Input type
*1
Thermocouple
K, J, R, S, E, T, B, N JIS C 1602-1995,
PLII, W5Re/W26Re, U, L
Resistance
thermometer
3-wire type Pt100 JIS C 1604-1997,
3-wire type JPt100 JIS C 1604-1981
2-wire type/3-wire type
Pt1000 JIS C 1604-1997
Micro voltage input
Measurement precision
When ambient
temperature is
25°C±5 °C
K type thermocouple : When the input is
in the range of 500 °C or more
±0.3% of full scale (±1digit)
*2
When ambient
temperature is
0 to 55°C
K type thermocouple : When the input is
in the range of 500 °C or more
±0.7% of full scale (±1digit)
*2
Cold contact temperature
compensation error
Within ±1.0 °C (When ambient temperature is 0 to 55°C)
However, within ± 2.0 °C while input value is
-150 to -100 °C / within ± 3.0 °C while input value is -200
to -150 °C
Resolution
0.1°C (0.1°F), 1°C (1°F), 0.5μV or 5.0μV
Varies depending on input range of used sensors.
Sampling period 250ms/4ch
Effect of external
resistance (When
thermocouple is used)
Approx. 0.125μV/Ω
Effect of input lead wire
resistance
(When resistance
thermometer is used)
3-wire type
Approx. 0.03%/Ω of full scale.
10Ω or less per 1-wire
2-wire type
Approx. 0.04%/Ω of full scale.
7.5Ω or less per 1-wire
Input impedance 1MΩ or more
Sensor current
Approx. 0.25mA
(When resistance thermometer is used)
Operation when input is
disconnected/
Operation when input is
short-circuited
Upscale/
Downscale (When resistance thermometer is used)
4.6 Current detector (CT) Input Specifications
4.7 Set temperature range
4.8 Output Specification
Item Specification
Number of input points 4 points
Current detector
CTL-12-S36-8, CTL-12-S56-10, CTL-6-P-H
(manufactured by U.R.D. Co., Ltd.)
Heater current measured
value
When CTL-12-S36-8 is used : 0.0 to 100.0A
When CTL-12-S56-10 is used : 0.0 to 100.0A
When CTL-6-P-H is used : 0.0 to 30.0A
Measurement precision
Larger one between ±5% of input value and ±2A
(Excluding precision of current detector)
Sampling period 0.5 sec.
Item Specification
K -200 to 1300°C (-100 to 2400°F)
J -200 to 1200°C (-100 to 2100°F)
T -200 to 400°C (-300 to 700°F)
S 0 to 1700°C (0 to 3200°F)
R 0 to 1700°C (0 to 3200°F)
E -200 to 1000°C (0 to 1800°F)
B 0 to 1800°C (0 to 3000°F)
N 0 to 1300°C (0 to 2300°F)
PLII 0 to 1200°C (0 to 2300°F)
W5Re/W26Re 0 to 2300°C (0 to 3000°F)
U -200 to 600°C (-300 to 700°F)
L 0 to 900°C (0 to 1600°F)
Micro voltage input DC0 to 10mV, DC0 to 100mV
Pt100 (3-wire type) -200 to 600°C (-300 to 1100°F)
JPt100 (3-wire type) -200 to 500°C (-300 to 900°F)
Pt1000 (2-wire type/3-wire type) -200.0 to 650.0°C (-328 to 1184°F)
Item Specification
Number of output points 4 points
Output method NPN open collector transistor output
Rated load voltage 5 to 24V DC
Maximum load voltage 30V DC or less
Maximum load current 100mA
Leak current in OFF status 0.1mA or less
ON voltage 1.5V (When the maximum load current)
Control output cycle 0.5 to 100.0 sec.
FX3U-4LC
INSTALLATION MANUAL
This manual describes the part names, dimensions, mounting, and
specifications of the product. Before use, read this manual and the manuals of
all relevant products fully to acquire proficiency in handling and operating the
product. Make sure to learn all the product information, safety information, and
precautions.
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 and product names described in this manual are registered
trademarks or the trademarks of their respective companies.
Effective December 2009
Specifications are subject to change without notice.
© 2009 Mitsubishi Electric Corporation
Manual Number JY997D38901
Revision A
Date December 2009
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