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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-5537  Rev.8  P. 1 / 3

INSTRUCTION MANUAL

CT TRANSMITTER

MODEL

W2CA/W2CE

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 + base CT protector) ...................................(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

 

NONINCENDIVE APPROVAL OPTION

• This equipment is suitable for use in Class I, Div. 2, 

Groups A, B, C and D or Non-Hazardous Locations only.

• 

WARNING!

 Before You Remove the Unit from Its Base 

Socket or Mount It, Turn Off the Power Supply and Input 
Signal for Safety.

• 

WARNING!  – Explosion Hazard –

 

 

Substitution of Components May Impair Suitability for 
Class I, Div. 2.

• 

WARNING!  – Explosion Hazard –

 

 

Do Not Disconnect Equipment Unless Power Has Been 
Switched Off or The Area is Known To Be Non-Hazardous.

• The equipment was evaluated for use in the ambient tem-

perature and relative humidity as mentioned in ‘ENVI-
RONMENT’ section.

• The input and output wiring must be in accordance with 

Class I, Div. 2 wiring methods and in accordance with the 
authority having jurisdiction for use in these hazardous 
locations.

 

CONFORMITY WITH EU DIRECTIVES, UK LEGISLATION OR UL

• This equipment is suitable for Pollution Degree 2 and 

Installation Category II (transient voltage 2500V).  Re-
inforced insulation (signal input or output 1 or output 2 
to power input: 300V) and basic insulation (signal input 
to output 1 or output 2: 300V) are maintained.  Prior to 
installation, check that the insulation class of this unit 
satisfies the system requirements.

• 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/UKCA/UL requirements.  Failure to observe 
these requirements may invalidate the CE/UKCA/UL 
conformance.

• The actual installation environments such as panel con-

figurations, 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 or 

UKCA requirements in regard to the whole system and 

employ additional protective measures* to ensure the CE 

or UKCA conformity.

* For example, installation of noise filters and clamp fil-

ters for the power source, input and output connected 

to the unit, etc.

• Install lightning surge protectors for those wires connect-

ed to remote locations.

 

POWER INPUT RATING & OPERATIONAL RANGE

• Locate the power input rating marked on the product and 

confirm its operational range as indicated below:

    100 – 240V AC rating: 85 – 264V (90 – 264V for UL), 
     

 47 – 66 Hz, approx. 4 – 6VA

    24V DC rating: 24V ±10%, approx. 3W
    11 – 27V DC rating: 11 – 27V, approx. 3W
  110V DC rating: 85 – 150V (110V ±10% for UL), approx. 3W

 

GENERAL PRECAUTIONS

• Before you remove the unit from its base socket or mount 

it, turn off the power supply and input signal for safety.

 

CT PROTECTOR

• Temperature of the CT Protector may rise if the signal 

conditioner body is left unplugged from the base socket.  
Be careful not to get burned when you need to touch it.

 

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 -5 to +55°C     

(23 to 131°F) with relative humidity within 30 to 90% 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 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 
satisfying complete performance described in the data 
sheet.

• With voltage output, do not leave the output terminals 

shortcircuited for a long time.  The unit is designed to 
endure it without breakdown, however, it may shorten ap-
propriate life duration.

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