M-system KCNA Manuel utilisateur

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-3557 Rev.6 P. 1 / 2

INSTRUCTION MANUAL

CT TRANSMITTER

(self-powered) MODEL

KCNA/KCNE

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 + base socket).............................(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

■GENERAL PRECAUTIONS

• Before you remove the unit from its base socket or mount

it, turn off the 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 -10 to +55°C

(14 to 131°F) with relative humidity within 30 to 85% 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.

■AND ....

• The unit is designed to function as soon as the input sig-

nal is supplied, however, a warm up for 10 minutes is re-

quired for satisfying complete performance described in

the data sheet.

COMPONENT IDENTIFICATION

-UNIT

Body Base Socket

Specifications

Span Adj.

INSTALLATION

Detach the yellow clamps located at the top and bottom of

the unit for separate the body from the base socket.

Clamp

(top & bottom)

DIN Rail

35mm wide

Spring Loaded

DIN Rail Adaptor

Shape and size of the base socket

are slightly different with various

socket types.

■DIN RAIL MOUNTING

Set the base socket so that its

DIN rail adaptor is at the bot-

tom. Hang the upper hook at

the rear side of base socket on

the DIN rail and push in the

lower. When removing the

socket, push down the DIN

rail adaptor utilizing a minus

screwdriver and pull.

■WALL MOUNTING

Refer to “EXTERNAL DI-

MENSIONS.”

KCNA / KCNE

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-3557 Rev.6 P. 2 / 2

TERMINAL CONNECTIONS

Connect the unit as in the diagram below or refer to the connection diagram on the front of the unit.

■EXTERNAL DIMENSIONS unit: mm (inch)

3456

2187

80 (3.15)

50 (1.97) 103 (4.06)

123 (4.84) [3.3 (.13)]

80 (3.15)

(.79)

40 (1.57)

50 (1.97)

7.8 (.31)

CLAMP

(top & bottom)

DIN RAIL

35mm wide

–

4.5 (.18) dia.

MTG HOLE

15 (.59) deep

–

M3.5

SCREW

• When mounting, no extra space is needed between units.

■CONNECTION DIAGRAM

–

OUTPUT

LOAD

SOURCE

CHECKING

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

nected according to the connection diagram.

2) Input: Check that the input signal is within 10 – 120% of

the full-scale.

Be sure to short the secondary side of CT or turn off the

current at its primary side for preventing the CT from

burning when the cables are to be disconnected from in-

put terminals.

Be sure that the input waveform is sinusoidal to obtain

proper accuracy for model KCNA.

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

scribed speciﬁcations.

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 input signal on and warm up for

more than 10 minutes.

• SPAN: Apply 100% input and adjust output to 100%.

SPAN is adjustable to ±5%.

MAINTENANCE

Regular calibration procedure is explained below:

■CALIBRATION

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

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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