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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:

DC alarm (body + base input resistor) ................(1)
Input resistor is provided only with current input type.

 

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, Meas-

urement Category II (output, transient voltage 2500V) 
and Installation Category II (transient voltage 2500V).  
Reinforced insulation (signal input or output to power in-
put: 300V) and basic insulation (signal input to output: 
300V) are maintained.  Prior to installation, check that 
the insulation class of this unit satisfies the system re-
quirements.

• 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.

 

POWER INPUT RATING & OPERATIONAL RANGE

• Locate the power input rating marked on the product and 

confirm its operational range as indicated below:

  

AC power

: Rating ±10%, 50/60 ±2 Hz, approx. 2VA

  

DC power

: Rating ±10%, approx. 2W

 

GENERAL PRECAUTIONS

• Before you remove the unit from its base socket 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 -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.

 

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.

COMPONENT IDENTIFICATION

Body

Base Socket

       x10

HI SET.

(%)    

        X1

       x10

LO SET.

(%)    

        X1

123

45

67890

123

45

67890

123

45

67890

123

45

67890

K

•UNIT

Specifications

Input Resistor

 

FRONT PANEL CONFIGURATION

Lo LED

Lo Setpoint Rotary Switch (×1%)

Lo Setpoint Rotary Switch (×10%)

Hi Setpoint Rotary Switch (×1%)

Hi Setpoint Rotary Switch (×10%)

Hi LED

HI SET

[%]

x1

x10

LO SET

[%]

x1

x10

• Explanations

Hi and Lo setpoint rotary switches are used to set the alarm 
setpoints.
The Hi and Lo LED, turn on when the coil for each relay is 
energized.

• Examples

For setting the relay to trip above 80% of the full-scale input 
signal, set the Hi rotary switch (×10) to “8”, while the switch 
(×1) to “0”.

DC ALARM

(CE, rotary switch adjustment)

MODEL

KSL2

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-3614  Rev.2  P. 1 / 3

INSTRUCTION MANUAL

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