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AS4V

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-1609  Rev.15  P. 1 / 5

DC ALARM

(dual or quad alarm trip; field-configurable)

MODEL

AS4V

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.

This equipment is for use in general industrial environ-
ments, therefore may not be suitable for applications which 
require higher level of safety (e.g. safety or accident preven-
tion systems) or of reliability (e.g. vehicle control or combus-
tion control systems).
For safety, installation and maintenance of this equipment 
must be conducted by qualified personnel.

 

PACKAGE INCLUDES:

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

 

MODEL NO.

Confirm that the model number described on the product is 
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.

 

SYMBOLS USED ON THE PRODUCT AND IN THIS MANUAL

 The symbol indicated on the equipment, means that 

the user must refer to the related parts in the manual for 
safe operation of the equipment. It is essential to read the 
instructions wherever the symbol appears in the manual.

  

WARNING

:   is reserved for conditions and actions that 

can cause serious or fatal injury.

 

CAUTION

 :   is reserved for conditions and actions that can 

cause injury or instrument damage.

  WARNING

 

INSULATION CLASS

Basic insulation (Signal input or output to Power input: 300 
V) is maintained.
If insulation failure may result in equipment, hazardous 
voltage (maximum 240 V) may result to signal input and 
then electric shock may cause.
Prior to installation, prepare supplemental insulation 
(equivalent basic insulation) between signal input and ex-
ternal circuits.

  CAUTION

 

REGARDING SAFETY

If equipment is not used in a manner not specified by M-
System, the protection provided by the equipment may be 
impaired.

 

CONFORMITY WITH LOW VOLTAGE DIRECTIVE OR UL

• This equipment is suitable for use in a Pollution Degree 

2 environment and in Installation Category II (transient 
voltage 2500 V).

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

 

CONFORMITY WITH EMC DIRECTIVE

• Insert a noise filter for the power source connected to the 

unit.  TDK-Lambda Noise Filter Model RSNA-2006 or 
equivalent is recommended.

• 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.

 

SIGNAL INPUT

This terminal is used for signal input.
Do not connect or measure to the circuits including tran-
sient voltage 2500 V.
Refer to “INPUT SPECIFICATIONS” in detail.

 

OUTPUT TERMINAL

Never use the output terminal under any load that exceeds 
the rated values. Otherwise it will impair prescribed perfor-
mance and cause burning of the equipment itself.

 

WIRING

• For wiring connection, refer to “TERMINAL CONNEC-

TIONS” and wire correctly.  Fire, electric shock and fail-
ure cause if wire are incorrectly connected.

• Wire using vinyl insulated power cable that meet input 

voltage and load current for equipment and screw by an 
adequate torque. 
Loose screws may abnormally generate heat and fire 
may cause. (Proper tightening torque [N·m] : 0.98 – 1.18)

• 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.

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