M-system M8XT2 Manuale utente

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-5470 Rev.4 P. 1 / 4

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.

■PACKAGE INCLUDES:

Signal conditioner (body + CJC sensor).............................(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.

The unit is programmable using the PC Conﬁgurator Soft-

ware. For detailed information on the PC conﬁguration,

refer to the JXCON users manual. The JXCON PC Con-

ﬁgurator Software is downloadable at M-System’s web site:

http://www.m-system.co.jp.

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. 50mA

(70mA for current output)

■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

CJC Sensor

Specifications Mounting Screw

Body

INSTALLATION

Use Installation Base (model: M8BSx).

THERMOCOUPLE CONVERTER

(PC programmable) MODEL M8XT2

M8XT2

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-5470 Rev.4 P. 2 / 4

TERMINAL CONNECTIONS

Connect the unit as in the diagram below.

Attach the CJC sensor together with input wiring to the input terminals. The CJC sensor is not interchangeable. Check that

its serial number is identical to that of the unit.

■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

–

T / C

CJC

SENSOR

metal leg

model: CJM

comp. leadwire

–

green

red

CONFIGURATOR JACK

CHECKING

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

nected according to the connection diagram.

2) DIP switches: Check the output range selector setting.

3) Power input: Check the power input voltage.

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

the full-scale.

If the thermocouple or its extension wires are broken, the

output goes over 100% (below 0% with downscale) due to

burnout function. Conﬁrm the status indicator LED pat-

tern and check leadwires in such a case.

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

scribed speciﬁcations.

6) Status indicator LED: Check that it blinks in a regular

pattern.

M8XT2

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-5470 Rev.4 P. 3 / 4

CALIBRATION

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.

■ZERO/SPAN & UP/DOWN SWITCHES

Fine zero and span adjustments can be done with the ZERO/

SPAN Selector and UP/DOWN switches. Calibrated values

are stored in the non-volatile memory, which will not be lost

even when you turn off power supply to the unit.

The output 1 and output 2 can be independently adjustable.

Zero and span are respectively set to 0% and 100% at the

factory, and ﬁeld calibration can be reset to ex-factory set-

ting if necessary.

Adjustable range: ±5%

Zero/Span Selector

ZERO: UP/DOWN switches usable for zero adjustment.

OFF: UP/DOWN switches unavailable.

SPAN: UP/DOWN switches usable for span adjustment.

UP/DOWN Switches

UP: Pressing UP increases adjusted values.

DOWN: Pressing DOWN decreases adjusted values.

■FRONT VIEW

UP Switch

Status Indicator LED

Configurator Jack

DOWN Switch

■BOTTOM VIEW

Zero/Span Selector

OFF

Zero/Span Selector

MODE SW POSITION

SPAN S

OFF ■

ZERO Z

■HOW TO CALIBRATE THE ZERO & SPAN

Use a signal source and measuring instruments of sufﬁcient

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

more than 10 minutes.

The output 1 and output 2 adjustments are linked except

for (2) and (6).

1) Apply 0% input.

2) Select the Output 1 Zero: Slide the Zero/Span Selector to

the position Z.

Select the Output 2 Zero: Slide the Zero/Span Selector to

the position Z while pressing UP switch.

3) Press UP or DOWN switch and adjust the output to 0%.

Incrementing speed will be doubled when you keep press-

ing a switch.

4) Put the Zero/Span Selector back to the position OFF.

5) Apply 100% input.

6) Select the Output 1 Span: Slide the Zero/Span Selector to

the position S.

Select the Output 2 Span: Slide the Zero/Span Selector to

the position S while pressing UP switch.

7) Press UP or DOWN switch and adjust the output to

100%. Incrementing speed will be doubled when you

keep pressing a switch.

8) Put the Zero/Span Selector back to the position OFF.

9) Check Zero and Span adjustments again with 0% and

100% input respectively.

10) If the output value is changed, repeat the above proce-

dure (1) – (9).

■HOW TO RESET

After you calibrated manually with these switches, you

can reset them to its ex-factory state by pressing both UP/

DOWN switches at once.

M8XT2

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-5470 Rev.4 P. 4 / 4

I/O RANGE MODIFICATION

Conﬁgurator Software is used to change input types and

ranges.

For changing output ranges, set the Output Range Selector

and then select by Conﬁgurator Software.

■SIDE VIEW

Output Range Selector

OUTPUT RANGE SW POSITION

V2Z1: -10 – +10 V / 0 – 20 mA DC I

V2V2: -10 – +10 V / -10 – +10 V DC V

STATUS INDICATOR LED

The unit is provided with a status indicator LED which

blinks in different patterns indicating various status of its

CPU. When it is functioning within normal parameters, the

LED blinks in a regular pattern of ON and OFF.

The following ﬁgure indicates typical patterns.

LED PATTERNSSTATUS

Normal

Programming Mode

Out. 1 Calibration Mode

Out. 2 Calibration Mode

Burnout

100 ms ON OFF

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 “CALIBRA-

TION” explained earlier.

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.

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