MG M8YCH Manual de usuario

BEFORE USE ....

Thank you for choosing us. Before use, please check con-

tents of the package you received as outlined below.

If you have any problems or questions with the product,

please contact our 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. 32mA

■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

Specifications

Span Adj.

Zero Adj.

Mounting Screw

Body

INSTALLATION

Use Installation Base (model: M8BSx).

CONTROL OUTPUT ISOLATOR

(applicable to HART signal) MODEL M8YCH

EM-5449 Rev.1 P. 1 / 2

MG CO., LTD. www.mgco.jp

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

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

–

LOAD HHC

POWER

*1. Hand-held communicator

*2. Use either 6-7 or 8-9 for input terminal.

OUTPUT

INPUTHHC

*1*2

INPUTHHC

*1*2

–

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) Output: Check that the load resistance meets the de-

scribed speciﬁcations.

250Ω±10% is required to use HART communication.

ADJUSTMENT PROCEDURE

This unit is calibrated at the factory to meet the ordered

speciﬁcations, therefore you usually do not need any cali-

bration.

For matching the signal to a receiving instrument or in case

of regular calibration, adjust the output as explained in the

following.

■HOW TO CALIBRATE THE OUTPUT SIGNAL

Use a signal source and measuring instruments of sufﬁcient

accuracy level. Turn the power supply on and warm up for

more than 10 minutes.

1) ZERO: Apply 0% input and adjust output to 0%.

2) SPAN: Apply 100% input and adjust output to 100%.

3) Check ZERO adjustment again with 0% input.

4) When ZERO value is changed, repeat the above proce-

dure 1) – 3).

MAINTENANCE

Regular calibration procedure is explained below:

■CALIBRATION

Warm up the unit for at least 10 minutes. Apply 0%, 25%,

50%, 75% and 100% input signal. Check that the output

signal for the respective input signal remains within accu-

racy described in the data sheet. When the output is out of

tolerance, recalibrate the unit according to the “ADJUST-

MENT PROCEDURE” explained earlier.

LIGHTNING SURGE PROTECTION

We offer a series of lightning surge protector for protec-

tion against induced lightning surges. Please contact us to

choose appropriate models.

M8YCH

EM-5449 Rev.1 P. 2 / 2

MG CO., LTD. www.mgco.jp

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

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