M-system M8SED User 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.

■PACKAGE INCLUDES:

Signal conditioner ...............................................................(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

■POWER INPUT RATING & OPERATIONAL RANGE

• Locate the power input rating marked on the product and

conﬁrm its operational range as indicated below:

24V DC rating: 24V ±10%, approx. 60mA

■GENERAL PRECAUTIONS

• Before you remove the unit 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 0 to 55°C (32

to 131°F) with relative humidity within 30 to 95% 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.

COMPONENT IDENTIFICATION

Output 1 Monitor LED

Output 1

Setpoint Adj.

Output 2

Setpoint Adj.

Output 2 Monitor LED

Mounting Screw

Body

Specifications

INSTALLATION

Use Installation Base (model: M8BSx).

DC ALARM

(thumbwheel switch adjustment) MODEL M8SED

5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN

Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: info@m-system.co.jp

EM-5488 Rev.2 P. 1 / 2

INSTRUCTION MANUAL

TERMINAL CONNECTIONS

Connect the unit as in the diagram below.

■EXTERNAL DIMENSIONS unit: mm (inch)

I/O PINS

17.5 (.69)

48 (1.89)

75 (2.95)

83 (3.27)

■CONNECTION DIAGRAM

Installation Base

OUTPUT 1

–

OUTPUT 2

POWER

–

INPUT

CHECKING

1) Terminal wiring: Check that all cables are correctly con-

nected according to the connection diagram.

2) Power input: Check the power input voltage.

3) Input: Check that the input signal is within 0 – 100% of

the full-scale.

4) Check that the output load is 125V AC/25VA or 60V

DC/15W at the maximum. For maximum relay life with

inductive loads, external protection is recommended.

When used with a multi-channel installation base (e.g.

M8BS-16), the ratings derated as following.

Terminal block type: 125V AC @ 0.2A, 30V DC @ 0.25A

Cable connector type: 24V AC @ 50mA, 24V DC @ 50mA

ALARM TRIP OPERATION

TRIP

ACTION

OUT

CODE

POWERED UNPOWERED

INP < SET INP > SET

OUT

Hi 1 OFF ON OFF

Hi 2 ON OFF ON

OUT

Lo 1 ON OFF OFF

Lo 2 OFF ON ON

ADJUSTMENT PROCEDURE

Turn the front thumbwheel SW to indicate desired set-

points in %.

Output 1 is for high trip, while Output 2 is for low.

Monitor LED turn ON when the coil is energized; Output 1

coil is energized when the input is above the setpoint, while

Output 2 coil is when the input is below the setpoint.

Relay contact turns ON when the coil is energized with Out-

put Code 1, de-energized with Output Code 2.

MAINTENANCE

Regular calibration procedure is explained below:

■CALIBRATION

Warm up the unit for at least 10 minutes.

• Hi Setpoint

Increase the input signal from a value lower than the set-

point and check that the relay trips at the setpoint.

• Lo Setpoint

Decrease the input signal from a value higher than the

setpoint and check that the relay trips at the setpoint.

When the trip points are shifted, please contact M-System’s

Sales Ofﬁce or representatives.

LIGHTNING SURGE PROTECTION

M-System offers a series of lightning surge protector for

protection against induced lightning surges. Please contact

M-System to choose appropriate models.

M8SED

5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN

Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: info@m-system.co.jp

EM-5488 Rev.2 P. 2 / 2

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