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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-3356  Rev.3  P. 1 / 4

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:

Watt transducer ..................................................................(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.

POINTS OF CAUTION

 

CONFORMITY WITH EU DIRECTIVES

• This equipment is suitable for Pollution Degree 2 and 

Measurement Category II (input, transient voltage 
4000V).  Reinforced insulation (signal input to output: 
300V) is maintained.  Prior to installation, check that the 
insulation class of this unit satisfies the system require-
ments.

• Altitude up to 2000 meters.
• The equipment must be mounted inside a panel.
• The equipment must be installed such that appropriate 

clearance and creepage distances are maintained to con-
form to CE requirements.  Failure to observe these re-
quirements may invalidate the CE conformance.

• 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.

• Install lightning surge protectors for those wires connect-

ed to remote locations.

 

GENERAL PRECAUTIONS

• Before you remove or mount the unit, turn off the 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 -10 to +55°C 

(14 to 131°F) with relative humidity within 30 to 85% RH 
in order to ensure adequate life span and operation.

 

WIRING

• Do not install cables 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 the input sig-

nal is supplied, however, a warm up for 10 minutes is re-
quired for satisfying complete performance described in 
the data sheet.

COMPONENT IDENTIFICATION

Span Adjustment

Zero Adjustment

Connection

Diagram

Body

Specifications

INSTALLATION

 

DIN RAIL MOUNTING

Set the unit so that its DIN rail adaptor is at the bottom.  
Position the upper hook at the rear side of the unit on the 
DIN rail and push in the lower.  When removing the unit, 
push down the DIN rail adaptor utilizing a minus screw-
driver and pull.

DIN Rail

35mm wide

Spring Loaded

DIN Rail Adaptor

 

WALL MOUNTING

Refer to “EXTERNAL DIMENSIONS.”

WATT TRANSDUCER

(self-powered)

MODEL

LTWTN

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