M-system LECA Manuale utente

LECA

P. 1 / 3EM-1945

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

Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: inf[email protected].jp

INSTALLATION

n DIN RAIL MOUNTING

Set the unit so that its DIN

rail adaptor is at the bottom.

Hang the upper hook at the

rear side of the unit on the

DIN rail and push in the lower.

When removing the unit,push

down the DIN rail adaptor

utilizing minus screwdriver

and pull.

n WALL MOUNTING

Refer to “DIMENSIONS.”

DIN Rail

35mm wide

Spring Loaded

DIN Rail Adaptor

BEFORE USE ....

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

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.

n PACKAGE INCLUDES:

Transducer................................................................(1)

n MODEL NO.

Conﬁrm that the model number described on the product is

exactly what you ordered.

n INSTRUCTION MANUAL

This manual describes necessary points of caution when you

use this product, including installation, connection and basic

maintenance procedures.

COMPONENT IDENTIFICATION

Span Adj.

Connection

Diagram

Body

Specifications

CT TRANSDUCER

(super-miniature size; self-powered, average sensing, RMS calibrated)

MODEL LECA

INSTRUCTION MANUAL

LECA

P. 2 / 3EM-1945

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

Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: inf[email protected].jp

TERMINAL CONNECTIONS

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

n DIMENSIONS mm (inch)

4–M4 SCREW

SPAN ADJ.

60 (2.36)

70 (2.76)

30 (1.18)35 (1.38)

80 (3.15)

44 (1.73)

33 (1.30) 51 (2.01)

5 (.20)

•When mounting, no extra space

is needed between units.

n CONNECTION DIAGRAM

–

OUTPUT

LOAD

SOURCE

LECA

P. 3 / 3EM-1945

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

Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: inf[email protected].jp

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 0 – 120% of

the rated current.

3) Output: Check that the load resistance meets the described

speciﬁcations.

ADJUSTMENT PROCEDURE

This unit is calibrated at the factory to meet the ordered speci-

ﬁcations, therefore you usually do not need any calibration.

For matching the signal to a receiving instrument or in case

of regular calibration, adjust the output as explained in the

following.

n 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.

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

SPAN is adjustable to ±5%.

POINTS OF CAUTION

n REMOVING THE UNIT

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

signal for safety.

n 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 apply physical impact to the unit.

• 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.

n WIRING

• Do not install cables (input and output) 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.

n 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.

MAINTENANCE

Regular calibration procedure is explained below:

n CALIBRATION

Warm up the unit for at least 10 minutes. Apply 5%, 25%,

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

signal for the respective input signal remains within accuracy

described in the data sheet. When the output is out of toler-

ance, recalibrate the unit according to the "ADJUSTMENT

PROCEDURE" explained earlier.

LIGHTNING SURGE PROTECTION

In order to protect the unit from lightning surges entering

through signal and power supply cables, use of appropriate

lightning surge protectors are recommended. Please contact

M-System.

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