M-system Current Loop Supply M3LDY Installation Manual

M3LDY

EM-2664 Rev.2

P. 1 / 6

BEFORE USE ....

Thank you for choosing M-System.  Before use, check the

package you received as below.

If you have any problems or questions with the product,

please contact M-System’s Sales Office or representatives.

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PACKAGE INCLUDES:

Signal conditioner ....................................................... (1)

I/O range and tag name label sheet ........................... (1)

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MODEL NO.

Check that the model No. described on the specification label

is exactly what you ordered.

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INSTRUCTION MANUAL

This manual describes the necessary points of caution when

you use this product, including installation, connection and

basic maintenance procedures.

The M3LDY with Option /A is programmable using the PC

configurator software.  For detailed information on the PC

configuration, refer to the M3CON instruction manual.  The

M3CON PC Configurator Software is downloadable at M-

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

POINTS OF CAUTION

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CONFORMITY WITH UL

(UL is unavailable for certain model suffix options.)

• This equipment is suitable for use in a Pollution Degree 2

environment.

• This equipment is to be used with the maximum operating

voltage 30Vrms and 42.4Vpeak or 60V DC.

• The equipment must be mounted inside a suitable fire

enclosure.

• Operating temperature: -25 to +55°C (-13 to +131°F)

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POWER INPUT RATING & OPERATIONAL RANGE

• Check the power rating for the unit on the specification

label.

Rating 24V DC: 24V ±10%, approx. 3W

• Power fuse: A power fuse of the rating as shown below is

incorporated for safety.  However, DO NOT replace it by the

user.

T 0.25A 125V

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 SAFETY PRECAUTION

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

supply and input signal for safety.

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 ENVIRONMENT

• Indoor use

• When heavy dust or metal particles are present in the air,

install the unit inside proper housing with sufficient ventila-

tion.

• 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 -25 to +65°C

(-13 to +149°F) with relative humidity within 0 to 95% RH in

order to ensure adequate life span and operation.

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 WIRING

• Do not install cables (power supply, input and output) close

to noise sources (relay drive cable, high frequency line, etc.).

• Do not bind the unit's cables together with cables where

high noise levels are present.  Do not install them in the same

duct.

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 AND ....

• The unit is designed to function as soon as power is

supplied, however, a warm up for 10 minutes is required for

satisfying complete performance described in the data sheet.

COMPONENT IDENTIFICATION

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HOW TO OPEN THE COVER WHEN SETTING DIP SW

Hold at the top and bottom of the unit as shown below and

slide the housing cover gently to open until it hits the latching

inside the unit.

INSTRUCTION  MANUAL

MODEL

M3LDY

CURRENT LOOP SUPPLY

(linearizing; field- and PC-configurable)

Specification Label

(side)

Body

SW Setting Label

• Housing Cover Fully Opened

Caution: 

Handle the cover carefully to protect internal components from damage.

DO NOT pull beyond where the housing cover is latched.  The plastic 

housing may be damaged.