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M3LT

5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: 

+81(6)6659-8510  E-mail: [email protected]

EM-2661-A  P. 1 / 7

THERMOCOUPLE TRANSMITTER

(field- and PC-configurable)

MODEL

M3LT

INSTRUCTION MANUAL

BEFORE USE ....

Thank you for choosing M-System.  Before use, please check 
contents of the package you received as outlined below.
If you have any problems or questions with the product, 
please contact M-System’s Sales Office or representatives.

 

PACKAGE INCLUDES:

Signal conditioner (body + CJC sensor) .........................(1)
I/O range and tag name label sheet ...............................(1)

 

MODEL NO.

Confirm Model No. marking on the product to be exactly 
what you ordered.

 

INSTRUCTION MANUAL

This manual describes necessary points of caution when 
you use this product, including installation, connection and 
basic maintenance procedures. For detailed information, 
refer to the operating manual (EM-2661-B).
The M3LT with Option /A is programmable using the PC 
configurator software. For detailed information on the PC 
configuration, refer to the M3LTCFG instruction manual.  
The M3LTCFG PC Configurator Software and operating 
manual are downloadable at M-System’s web site: http://
www.m-system.co.jp.

POINTS OF CAUTION

 

CONFORMITY WITH UL

• 

This equipment is suitable for use in a Pollution Degree 
2 environment.

• 

DO NOT connect the thermocouple to circuits greater 
than 30V AC rms and 42.4Vpeak or 60V DC.

• 

This equipment is to be used with the maximum operat-
ing voltage 30Vrms and 42.4Vpeak or 60V DC.

• 

The equipment must be mounted inside a suitable fire 
enclosure.

• 

Operating temperature: -25 to +55°C (-13 to +131°F)

 

CONFORMITY WITH EU DIRECTIVES

• 

The equipment must be mounted inside a panel.

• 

Insert noise filters 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 connect-
ed to remote locations.

• 

The actual installation environments such as panel con-
figurations, connected devices, connected wires, may af-
fect 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 conform-
ity.

 

POWER INPUT RATING & OPERATIONAL RANGE

Locate the power input rating marked on the product and 
confirm its operational range as indicated below:

10 – 32V DC rating: 9 – 36V, approx. 3W

 

SAFETY PRECAUTION

Before you remove the unit or mount it, turn off the power 
supply and input signal for safety.

 

ENVIRONMENT

• 

Indoor use

• 

When heavy dust or metal particles are present in the 
air, install the unit inside proper housing with sufficient 
ventilation.

• 

Do not install the unit where it is subjected to continuous 
vibration.  Do not subject the unit to physical impact.

• 

Environmental temperature must be within -25 to +65°C     
(-13 to +149°F) with relative humidity within 0 to 95% 
RH in order to ensure adequate life span and operation.

• 

Be sure that the ventilation slits are not covered with ca-
bles, etc.

 

WIRING

• 

Do not install cables (power supply, input and output) 
close to noise sources (relay drive cable, high frequency 
line, etc.).

• 

Do not bind these cables together with those in which 
noises are present.  Do not install them in the same duct.

 

AND ....

The unit is designed to function as soon as power is sup-
plied, however, a warm up for 10 minutes is required for sat-
isfying complete performance described in the data sheet.

Summary of Contents for M3LT

Page 1: ... must be mounted inside a panel Insert noise filters 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 connect ed to remote locations The actual installation environments such as panel con figurations connected devices connected wires may af fect the protection ...

Page 2: ...ere the housing cover is latched The plastic housing may be damaged HOW TO SEPARATE THE EURO TYPE CONNECTOR TERMINAL BLOCKS When you need to separate the euro type connector termi nal blocks from the transmitter body for wiring insert a mi nus driver between the euro type connector terminal block and the housing body pull up the driver and pull out the euro type connector terminal block INSTALLATI...

Page 3: ...erminal 5 The CJC Sensor is calibrated to a particular unit and not interchangeable with another Match the Serial No of the unit and the sensor WIRING INSTRUCTIONS Applicable wire size Solid 0 2 to 2 5 mm2 0 55 to 1 75 dia Stranded 0 2 to 2 5 mm2 Tinning wire ends may cause contact failure and therefore is not recommended Ferruled 0 2 to 1 5 mm2 0 55 to 1 35 dia The following Phoenix Contact termi...

Page 4: ...moved Selectable I O type and ranges are listed in Table 8 and 9 DIP SW CONFIGURATION MODE Turn the SW2 8 OFF to enable the DIP SW Field Configu ration mode as shown in Table 1 See Table 3 to configure the input and Table 6 for the out put PC CONFIGURATION MODE Turn the SW2 8 ON to enable the PC Configuration mode as shown in Table 1 All programmable features can be set up on a PC regardless of ot...

Page 5: ...the setup actions in each step of Calibration Modes Please read the following explanations referring to Calibration Flow Chart below CALIBRATION FLOW CHART POWER ON Amber LED Green LED Control Buttons Red LED OFF ON Blink RUN MODE LD2 LD3 A G RUN MODE LD2 LD3 G R LD1 LD2 LD3 LD1 LD2 LD3 0 INPUT CONFIGURED 100 INPUT CONFIGURED INPUT CALIBRATION MODE LD1 OUTPUT CALIBRATION MODE LD2 LD3 LD1 LD2 LD3 0...

Page 6: ... LED is blinking ZERO SPAN ADJUSTMENTS After the transmitter is installed and operational fine zero and span tuning can be performed as explained below Both zero and span are adjustable within 15 1 Run Mode Confirm that the green LED is blinking model M3LT x A or the green LED turns on model M3LT x B 2 Fine Zero Calibration Mode Press MODE button for 1 or 2 seconds until the LD1 red LED is ON and ...

Page 7: ... different blink ing patterns Examples are shown below LD1 LD2 LD3 A A A LD1 LD2 LD3 G LD1 LD2 LD3 G LD1 LD2 LD3 LD1 LD2 LD3 A LD1 LD2 LD3 A G G LD1 LD2 LD3 A G LD1 LD2 LD3 A A A R R R G NORMAL OPERATION RUN MODE ERROR MODE System Error Indicates the CPU s communication error DIP SW Error DIP SW configuration is inappropriate Check the DIP SW setting referring to Tables 2 7 Burnout in PC Configura...

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