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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-7691-A  Rev.6  P. 1 / 4

INSTRUCTION MANUAL

WEB-ENABLED REMOTE TERMINAL UNIT

MODEL

DL8

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:

Web-enabled remote terminal unit ....................................(1)

Protective cover ...................................................................(1)

Ferrite core (ZCAT 3035-1330 TDK) ..................................(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 explanations to operate this product, please 

refer to Users Manual (EM-7691-B), downloadable at M-

System’s web site: http://www.m-system.co.jp

POINTS OF CAUTION

 

CONFORMITY WITH EU DIRECTIVES

• 

The equipment must be mounted inside the instrument 

panel of a metal enclosure.

• 

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:

 

DC Power supply

: Rated voltage 24V DC

     

24V DC ± 10%, approx. 12W

     

(@ internal power max. current 1.6 A)

 

Excitation supply (excitation for I/O module)

:

     

24V DC ± 10%, operational current 7A

   (From power supply (exitation supply) connector, via con-

nector for internal bus, supplied to each I/O module.  Pow-

er output current consumption must be under operational 

current.)

 

GENERAL PRECAUTIONS

• 

Before you remove the unit or mount it, turn off the power 

supply 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 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.

• 

Use a ferrite core close to the unit for communication line.  
Turn the cable twice (1 round) as figure below.

 

ABOUT SD CARDS

• 

Do NOT turn off the power of DL8 during writing data.  
Insert or eject SD card according to the specified proce-
dure.

• 

Confirm the front and back side of the SD card.

 

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.

INSTALLATION

Connection between DL8 series modules is done with the 
connector of each module.  Therefore, a base is not neces-
sary.  Since the connector between modules supplies power 
and transfers internal communication data, do NOT change 
modules during power supplied.

Hook

DIN Rail Adaptor

 

HOW TO MOUNT THE MODULE ON DIN RAIL

• Web-Enabled RTU Modules

Position the upper hook at the rear on the DIN rail and push in the lower.
When removing the module, push down the DIN rail adaptor utilizing a 
minus screwdriver and pull.

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