MG M3-UNIT Series User manual

1M3LR EM-2662-B Rev.5
MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Space-saving Signal Conditioners M3-UNIT Series
RTD TRANSMITTER
(field- and PC-configurable)
Model: M3LR
OPERATING MANUAL

2M3LR EM-2662-B Rev.5
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5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
CONTENTS
1. INTRODUCTION.....................................................................................4
1.1 PACKAGE .............................................................................................................................4
2. SAFETY PRECAUTIONS (that must be observed)................................5
3. POINTS OF CAUTION ...........................................................................7
3.1 BEFORE USE ......................................................................................................................7
3.2 CONFORMITY WITH UL ......................................................................................................7
3.3 CONFORMITY WITH EU DIRECTIVES...............................................................................7
3.4 ENVIRONMENT ...................................................................................................................7
3.5 WIRING ................................................................................................................................8
3.6 HANDLING CAUTIONS........................................................................................................8
4. FEATURES AND PREPARATION PROCEDURE OF M3LR ................9
4.1 FEATURES OF M3LR ..........................................................................................................9
4.2 PREPARATION PROCEDURE.............................................................................................9
5. COMPONENT IDENTIFICATION ......................................................... 10
5.1 FRONT AND SIDE VIEWS ................................................................................................. 10
5.1.1 STATUS INDICATOR LED....................................................................................... 11
5.2 INTERNAL VIEW................................................................................................................ 13
6. HOW TO OPEN THE COVER ..............................................................14
7. DIP SWITCH CONFIGURATION ..........................................................15
7.1 DIFFERENCE BETWEEN DIP SW CONFIGURATION AND PC CONFIGURATION......... 15
7.2 DIP SWITCH SELECTION PER I/O SPECIFICATION AND FUNCTION............................15
7.2.1 CONFIGURATION MODE....................................................................................... 16
7.2.2 INPUT TYPE ........................................................................................................... 16
7.2.3 OUTPUT TYPE ....................................................................................................... 17
7.2.4 FRONT CONTROL BUTTON LOCK .......................................................................17
8. WIRING.................................................................................................18
8.1 CAUTION IN WIRING.........................................................................................................18
8.2 WIRING INSTRUCTIONS...................................................................................................18
8.3 TERMINAL ASSIGNMENT .................................................................................................20
8.4 TERMINAL CONNECTIONS ..............................................................................................21
8.4.1 WIRING INPUT.......................................................................................................21
8.4.2 WIRING OUTPUT...................................................................................................21
8.4.3 WIRING POWER....................................................................................................22

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9. INSTALLATION ....................................................................................23
10. CALIBRATION....................................................................................24
10.1 CALIBRATION FLOW .......................................................................................................24
10.2 INPUT & OUTPUT RANGING ..........................................................................................25
10.2.1 OUTLINE OF I/O RANGING.................................................................................25
10.2.2 MAXIMUM RANGE, MINIMUM SPAN AND DEFAULT VALUE OF INPUT ...........27
10.2.3 MAXIMUM RANGE, MINIMUM SPAN AND DEFAULT VALUE OF OUTPUT .......27
10.2.4 OPERATION PROCEDURE OF I/O RANGING....................................................28
10.3 FINE ADJUSTMENT MODE .............................................................................................31
10.3.1 OUTLINE OF FINE ADJUSTMENT ......................................................................31
10.3.2 OPERATION PROCEDURE OF FINE ADJUSTMENT.........................................32
11. CHECKING, MAINTENANCE .............................................................34
11.1 CHECKING........................................................................................................................34
11.2 MAINTENANCE ................................................................................................................34
12. APPENDICES.....................................................................................35
12.1 SPECIFICATIONS ............................................................................................................35
12.1.1 GENERAL SPECIFICATIONS...............................................................................35
12.1.2 INPUT SPECIFICATIONS .....................................................................................35
12.1.3 OUTPUT SPECIFICATIONS .................................................................................35
12.1.4 INSTALLATION......................................................................................................36
12.1.5 PERFORMANCE ..................................................................................................36
12.1.6 STANDARDS & APPROVALS ...............................................................................36
12.1.7 I/O TYPE, MAXIMUM RANGE & ACCURACY ......................................................36
12.1.8 CALCULATION EXAMPLES OF OVERALL ACCURACY .....................................37
12.2 PC CONFIGURATOR SOFTWARE..................................................................................38
12.3 MODEL NUMBERING ......................................................................................................39
12.4 EXTERNAL DIMENSIONS ...............................................................................................40

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1. INTRODUCTION
Thank you for your choosing us. Read this manual carefully to ensure that you use the product correctly and safely.
1.1 PACKAGE
Check contents of the package you received as outlined below.
• Signal conditioner
• Accessories
I/O range and tag name label sheet Instruction manual

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2. SAFETY PRECAUTIONS (that must be observed)
The following signs are used in this manual to provide precautions required to ensure safe usage of the unit. Please under-
stand these signs and graphic symbols, read the manual carefully and observe the description.
The following signs show seriousness of safety hazard or damage occurred when used wrongly with the signs ignored.
Indicates a potentially hazardous situation which, if not avoided, may result in
serious injury or death.
Indicates a potentially hazardous situation which, if not avoided, may result in
injury or in property damage.
Indicates prohibitions. Indicates mandatory cautions. Indicates cautions.
For safety, make sure that wiring is performed by
qualied personnel only.
• Failure to do so may result in a re, electric
shock or injury.
Do not splash water on the unit.
• Doing so may result in a re, electric shock or
injury.
Do not touch the terminals while the power is on.
• Doing so may result in electric shock.
Provide safety measures outside of the unit to
ensure safety in the whole system if an abnormal-
ity occurs due to malfunction of the unit or another
external factor affecting the unit’s operation.
Check the connection diagram carefully before
wire connection.
• Failure to do so may result in malfunction, a re
or electric shock.
Stop using the unit immediately if smokes, unusual
smell or abnormal noises come(s) from it.
• Using the unit continuously may result in a re
or electric shock.
Tighten the terminal screws of the Euro type con-
nector terminal blocks with a specied torque.
• Excessive fastening may result in damage of
the screws and loose screws may occasionally
result in ignition.
Stop using the unit if it is dropped or damaged.
• Using the unit continuously may result in a re
or electric shock.
PROHIBITION
WET HANDS
Do not operate buttons with a wet hand or nger.
• Doing so may result in electric shock.
Do not throw the unit into the re.
• Doing so may result in rupture of the electronic
component.

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Never discompose or remodel the unit.
• Doing so may result in electric shock, malfunc-
tion or injury.
Do not press buttons with a pointed object.
• Doing so may result in malfunction of the unit.
Do not connect or remove the unit while its power
is on.
• Doing so may result in electric shock, malfunc-
tion or injury.
Do not pull the wires to separate the Euro type
connector terminal blocks from the body.
• Doing so may result in damage of the unit or
injury.
Do not allow ne shavings or wire scraps to enter
the unit in machining screws or wiring.
• Doing so may result in malfunction of the unit.
Do not use the unit with the cover open.
• Doing so may result in malfunction of the unit.
Do not open the housing cover while the power or
the input is applied.
• Doing so may result in electric shock, malfunc-
tion or injury.
Do not pull the wires connecting to the unit.
• Doing so may result in electric shock, damage
of the unit or injury.
PROHIBITION
TO CONTACT
Do not touch the printed circuit board or the elec-
tronic components in opening the cover.
• Doing so may result in malfunction of the unit.
Do not use the unit in the atmosphere where com-
bustible gas is present.
• Doing so may result in inammation, ignition or
smoke.
Do not connect other cables to the COMM (con-
gurator jack) port than the dedicated one.
• Doing so may result in malfunction of the unit.
Do not cover the ventilation slits with cables, etc.
• Doing so may result in malfunction or heating.
Use a minus screwdriver and tweezers in setting
the switches.
• Failure to do so may result in malfunction of
the unit.

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3. POINTS OF CAUTION
3.1 BEFORE USE ....
The unit is for use in general industrial environments, therefore may not be suitable for applications which require higher
level of safety (e.g. safety or accident prevention systems) or of reliability (e.g. vehicle control or combustion control sys-
tems).
For safety, installation and maintenance of this unit must be conducted by qualied personnel.
If the unit is used in a manner not specied by this manual, the protection provided by the equipment may be impaired.
3.2 CONFORMITY WITH UL
This product conforms to the following general safety requirements of UL/C-UL.
UL/C-UL general safety requirements
UL 61010-1, CAN/CSA-C22.2 No.1010-1
• This equipment is suitable for use in a Pollution Degree 2 environment.
• DO NOT connect the RTD to circuits greater than 30 V rms and 42.4 V peak or 60 V DC.
• This equipment is to be used with the maximum operating voltage 30 V rms and 42.4 V peak or 60 V DC.
• The equipment must be mounted inside a suitable re enclosure.
• Operating temperature: -25 to +55°C (-13 to +131°F)
3.3 CONFORMITY WITH EU DIRECTIVES
• The equipment must be mounted inside a panel.
• Insert noise lters for the power source, input and output connected to the unit. COSEL Model NAC-04-472, TDK Model
ZCAT 3035-1330 or equivalent is recommended.
• Install lightning surge protectors for those wires connected to remote locations.
• The actual installation environments such as panel congurations, connected devices, connected wires, may affect the
protection level of this unit when it is integrated in a panel system. The user may have to review the CE requirements in
regard to the whole system and employ additional protective measures* to ensure the CE conformity.
*For example, installation of noise lters and clamp lters for the power source, input and output connected to the unit,
etc.
This product conforms to the EMC Directive for electrical and electronic apparatus intended for use in industrial environ-
ments. If it is used in the residential environments, it may cause radio interference, and the user is requested to take
appropriate measures.
3.4 ENVIRONMENT
Install the unit within the installation specications.
• Indoors use.
• Environmental temperature must be within -25 to +65°C (-13 to 149°F) with relative humidity within 0 to 95% RH without
condensing.
• Provide sufficient space around the unit for heat dissipation.
• Install the unit in a well-ventilated place in order to prevent internal temperature rise.
• Refer to “Clustered mounting” to install several units. In mounting the unit with other equipment side by side, provide suffi-
cient space between them, according to the dimensions in the clustered mounting.
• Do not use the unit under the following environments:
– Where the unit is exposed to direct sunlight, rain or wind. (The unit is not designed for outdoor use.)

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– Where condensation may occur due to extreme temperature changes.
– Where corrosive or ammable gas is present.
– Where heavy dust, iron powder or salt is present in the air.
– Where organic solvent such like benzine, thinner, and alcohol, or strong alkaline materials such like ammonia and
caustic soda may attach to the unit, or where such materials are present in the air.
– Where the unit is subject to continuous vibration or physical impact.
– Where there are high-voltage lines, high-voltage equipment, power lines, power equipment, equipment with transmis-
sion unit such like a ham radio equipment, or equipment generating large switching surges around the unit.
3.5 WIRING
• In order to prevent potential electric shock, wire the unit after turning off the power supply and making sure that the power
is not supplied to the cable.
• Be sure to conrm the name and polarity of each terminal before wiring to the Euro type connector terminal blocks.
• Do not connect anything to unused terminals.
3.6 HANDLING CAUTIONS
• The unit is designed to function as soon as power is supplied, however, a warm up for 10 minutes is required for satisfy-
ing complete performance described in the data sheet.
• Use the unit within the noted supply power voltage and rated load.
• The last measured values are held in mode transition. Take this into consideration when conguring the control system.
• Clean the surface of the unit with wet soft cloth. Do not use organic solvent such like benzine, thinner and alcohol. Doing
so may result in deformation or discoloration of the unit.
• When abnormality is found such like smokes, unusual smell and abnormal noises coming from the unit, immediately cut
the power supply and stop using it.

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4. FEATURES AND PREPARATION PROCEDURE OF M3LR
4.1 FEATURES OF M3LR
The M3LR is a eld congurable signal transmitter using a simulator and an indicator, without a PC or a dedicated setting
unit.
For instance, select an input type and range with the DIP switches on the unit to set input. Then apply a desired minimum
or maximum input from the simulator and press a front button to memorize the value as minimum or maximum value. Easy
and reasonable one-step calibration (hereafter called ‘One-Step Cal’) realizes automatic I/O ranging and calibration only by
pressing a button once.
4.2 PREPARATION PROCEDURE
Before using the unit, perform the calibration according the following ow. The procedure depends on the conguration
options or modes.
• Two conguration modes are available with the model M3LR-R4/A, eld conguration using the DIP SW / control
buttons (hereafter called ‘DIP SW conguration’) and the PC conguration.
• The model M3LR-R4/B is for the DIP SW conguration only.
POWER ON
CONFIGURING DIP SW
WIRING & MOUNTING ON DIN RAIL
DIP SW conguration PC conguration
INPUT RANGING
• With front control buttons and a simulator.
• With front control buttons, a simulator
and a multimeter.
OUTPUT RANGING
I/O SETTING AND CALIBRATION
• Using the PC Congurator Software
(model: M3LRCFG).
STARTING OPERATION

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5. COMPONENT IDENTIFICATION
5.1 FRONT AND SIDE VIEWS
(1)
(2)
(3)
(4)
(5) (6) (7)
(8)
(9)
(1) LED1 (LD1), LED2 (LD2) and LED3 (LD3)
The blinking pattern (ON/blink/OFF) of the tri-color (green/amber/red) LEDs indicates a mode or an operation status of
the transmitter.
(2) MODE, UP and DOWN Buttons
Used for the I/O ranging and ne adjustments by ‘One-Step Cal’. The functions of the buttons are shown in the following
table.
BUTTON FUNCTION
MODE Used to move on to the I/O Ranging Mode, Fine Adjustment Mode and RUN Mode.
UP Used to congure 100% input in the Input Ranging Mode and 100% output in the Output Ranging
Mode, and to increase the output in the Fine Adjustment Mode.
DOWN Used to congure 0% input in the Input Ranging Mode and 0% output in the Output Ranging Mode, and
to decrease the output in the Fine Adjustment Mode.
(3) Congurator jack
Used to connect with a PC using the PC Congurator Software (model: M3LRCFG) for various settings, I/O ranging
and ne adjustments.
Connect a dedicated cable between the congurator jack and the PC.
(4) Cover for congurator jack
Slide the cover to connect the cable to the congurator jack. Close the cover in the normal operation.
(5) Specication label
The model No., power input, serial No. (SER NO) and rmware version (VER) are printed on the label.
(6) Connection diagram
The connection diagram for each terminal is shown.
(7) DIP SW setting
The DIP switch settings are shown.
(8) I/O range label
When I/O range indication is necessary, write in the congured ranges on the I/O range label included in the product
package and put it on the side of the unit.
(9) Tag name label
When a tag No. is specied, the unit(s) will be shipped with the tag name label put on the above position.

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5.1.1 STATUS INDICATOR LED
Combinations of the three front LEDs (LD1, LD2 and LD3) indicates the transmitter’s operating status by different blinking
patterns. The patterns depend on the conguration modes, DIP SW conguration and PC conguration.
Examples are shown below.
LED COLOR PATTERN
Red RON
Amber ABlink
Green GOFF
■NORMAL OPERATION (RUN) MODE
Combination of the LEDs and their blinking patterns indicate normal or abnormal operation of the unit, and are useful to
identify error modes.
• Normal operation (RUN) mode
DIP SW CONFIGURATION PC CONFIGURATION
• Error mode
ERROR DIP SW CONFIGURATION PC CONFIGURATION
Output saturated
The output is below -15% or above 115%. Check the setting and input.
Burnout
The sensor or the input wiring is disconnected. Check the sensor and wiring.
DIP SW error
DIP SW conguration is inappropriate. Check the SW settings.
System error
Indicates the CPU’s communication error.

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■I/O RANGING MODE & FINE ADJUSTMENT MODE
The LED status in the I/O ranging and ne adjustments using the ‘One-Step Cal’ is shown in the following tables.
MODE LED MODE LED
Input ranging Fine zero adjustment
Output ranging Fine span adjustment
NOTE
In the I/O ranging and ne adjustments using the PC Congurator Software (model: M3LRCFG), the LEDs are not ac-
cording to the above tables.

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5.2 INTERNAL VIEW
(1) SW1
(2) SW2
(3) SW3
(1) SW1
Sets output type.
(2) SW2
Sets RTD type, output type, front control button lock and conguration mode.
(3) SW3
Sets burnout and RTD wires.

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6. HOW TO OPEN THE COVER
Open the housing cover to set the DIP switches inside the cover.
■HOW TO OPEN THE COVER
(1) Hold the locks at the top and bottom of the unit.
(2) Slide the housing cover gently to open until it hits the latching inside the unit (approx. 3.5 cm).
Front
Approx. 3.5 cm
Lock
Lock
Lock
■Top
■Bottom
Lock
• Do not open the cover while the power or the input is applied.
• Do not touch the printed circuit board or the electronic components in opening the cover.
• Do not pull beyond where the cover is latched.
■HOW TO CLOSE THE COVER
(1) Push the front to close the cover.
Front
• Before closing the cover, make sure that there is not a conductive foreign material attached on the printed circuit board.
• Be sure to close the cover after setting.
• Be careful not to get your hand or nger caught in the cover.
• Do not force the cover closed. Doing so may result in damage of the electronic components.

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7. DIP SWITCH CONFIGURATION
This chapter describes the conguration of the I/O specications and functions using the DIP switches.
For the PC conguration, some DIP switch settings are necessary.
7.1 DIFFERENCE BETWEEN DIP SW CONFIGURATION AND PC CONFIGURATION
The following table shows the difference between the DIP SW conguration and PC conguration.
CONFIGURATION ITEM DIP SW CONFIGURATION PC CONFIGURATION
Conguration mode SW2-8 OFF SW2-8 ON
Input type Required ----
Output type Required Required for SW1-1 through 1-4
Front control button lock As necessary As necessary
7.2 DIP SWITCH SELECTION PER I/O SPECIFICATION AND FUNCTION
Congure the DIP switches according to your I/O specications and functions.
The unit reads the DIP-switch-calibrated conguration only once after the power supply is turned on. Set the switches with
the power supply removed. Some tools are needed to set the DIP switches.
• Set the switches with the power supply removed.
• Use a minus screwdriver with the blade edge 0.8 mm (0.03”) to set the DIP switches.
• Do not touch other electronic components except for the DIP switches.
SW1
SW2
SW3

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7.2.1 CONFIGURATION MODE
With the model M3LR-R4/A, select the conguration mode (conguration method of I/O specications), DIP SW congura-
tion or PC conguration, as shown in the following table. With the model M3LR-R4/B, turn the SW2-8 OFF.
DIP SW conguration: sets I/O specications with the DIP switches inside the cover and the front control buttons.
PC conguration: sets I/O specications with the PC Congurator Software (model: M3LRCFG).
MODE SW2-8
DIP SW OFF
PC ON
7.2.2 INPUT TYPE
Set the DIP switches (SW2-4 through 2-7, SW3-1 through 3-4) according to the RTD type, burnout and RTD wires settings.
These settings are not required with the PC conguration.
7.2.2.1 RTD input
■RTD TYPE
RTD SW2-7 SW2-6 SW2-5 SW2-4
Pt 100 (JIS ’97, IEC) OFF OFF OFF OFF
Pt 200 OFF OFF OFF ON
Pt 300 OFF OFF ON OFF
Pt 400 OFF OFF ON ON
Pt 500 OFF ON OFF OFF
Pt 1000 OFF ON OFF ON
Pt 50 Ω (JIS ’81) OFF ON ON OFF
JPt 100 (JIS ’89) OFF ON ON ON
Ni 100 ON OFF OFF OFF
Ni 120 ON OFF OFF ON
Ni 508.4 Ω ON OFF ON OFF
Ni-Fe 604 ON OFF ON ON
Cu 10 @25°C ON ON OFF OFF
■BURNOUT
BURNOUT SW3-2 SW3-1
No burnout OFF ON
Upscale OFF OFF
Downscale ON OFF
■RTD WIRES
WIRES SW3-4 SW3-3
2-wire OFF ON
3-wire OFF OFF
4-wire ON ON

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7.2.3 OUTPUT TYPE
Set the DIP switches (SW1-1 through 1-4, SW2-2 and 2-3) according to the output specications.
The DIP switch settings (SW1-1 through 1-4) are required with the PC conguration.
7.2.3.1 DIP SW conguration
• DC current output
SW1-4 SW1-3 SW1-2 SW1-1 SW2-3 SW2-2
OFF ON OFF OFF OFF OFF
• DC voltage output (narrow spans) [maximum range: -2.5 to +2.5 V DC]
SW1-4 SW1-3 SW1-2 SW1-1 SW2-3 SW2-2
ON OFF OFF ON OFF ON
• DC voltage output (wide spans) [maximum range: -10 to +10 V DC]
SW1-4 SW1-3 SW1-2 SW1-1 SW2-3 SW2-2
ON OFF ON OFF ON OFF
7.2.3.2 PC conguration
• DC current output
SW1-4 SW1-3 SW1-2 SW1-1
OFF ON OFF OFF
• DC voltage output (narrow spans) [maximum range: -2.5 to +2.5 V DC]
SW1-4 SW1-3 SW1-2 SW1-1
ON OFF OFF ON
• DC voltage output (wide spans) [maximum range: -10 to +10 V DC]
SW1-4 SW1-3 SW1-2 SW1-1
ON OFF ON OFF
7.2.4 FRONT CONTROL BUTTON LOCK
You can lock the button operation on the front panel to prevent inadvertent operation.
This function is applicable to the rmware 2.02 or higher version. Conrm the rmware version on the specication label
on the side of the transmitter.
LOCK SW2-1
Unlock OFF
Lock ON

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8. WIRING
8.1 CAUTION IN WIRING
• For safety, make sure that wiring is performed by qualied personnel only.
• In order to prevent potential electric shock, wire the unit after turning off the power supply and making sure that the
power is not supplied to the cable.
• Be sure to conrm the name and polarity of each terminal before wiring to the Euro type connector terminal blocks
(hereafter called ‘terminal block(s)’).
• Take measures to reduce noise as much as possible, e.g. by using shielded twisted pair wires for the input signal.
Ground the input shield to the most stable earth to prevent noise troubles.
• Do not connect anything to unused terminals.
• We offer a series of lightning surge protectors for protection against induced lightning surges. Please contact us to
choose appropriate models.
8.2 WIRING INSTRUCTIONS
■APPLICABLE WIRE SIZE
• Solid: 0.25 to 2.5 mm2(0.55 to 1.75 dia.)
• Stranded: 0.25 to 2.5 mm2(0.55 to 1.75 dia.)
8mm
• Tinning wire ends may cause contact failure and therefore is not recommended.
• Expose wire conductors by 8 mm (0.31”).
■RECOMMENDED FERRULE
The following Phoenix Contact terminals are recommended.
• For single-wire • For twin-wire
CROSS-SECTION AREA MODEL CROSS-SECTION AREA MODEL
0.2 to 0.25 mm2AI 0,25-8 YE 0.34 to 0.5 mm2AI-TWIN 2X 0,5-8 WH
0.25 to 0.34 mm2AI 0,34-8 TQ 0.5 to 0.75 mm2AI-TWIN 2X 0,75-8 GY
0.34 to 0.5 mm2AI 0,5-8 WH 0.75 to 1.0 mm2AI-TWIN 2X 1,0-8 RD
0.5 to 0.75 mm2AI 0,75-8 GY 1.0 to 1.5 mm2AI-TWIN 2X 1,5-8 BK
0.75 to 1.0 mm2AI 1,0-8 RD
1.0 to 1.5 mm2AI 1,5-8 BK
8mm
8mm
Recommended manufacturer: Phoenix Contact GmbH & Co., KG

19M3LR EM-2662-B Rev.5
MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
■INSTALLATION/SEPARATION OF TERMINAL BLOCK
• Separation
Insert a minus screwdriver between the terminal block and the housing body, pull up the driver and pull out the terminal
block.
• Installation
Push the terminal block until it clicks into place.
NOTE
Match the terminal numbers of the terminal blocks with those indicated on the trans-
mitter body in installing the blocks (gure on the right).

20M3LR EM-2662-B Rev.5
MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
■WIRING TO TERMINAL BLOCK
Insert a wire into the dead end of a terminal block and x it with a minus screwdriver with the blade edge 0.6 mm (0.02”)
and the blade width 3.5 mm (0.14”) (torque: 0.5 – 0.6 N∙m).
8.3 TERMINAL ASSIGNMENT
Output signal
Input signal
Power