M-system M8CD1 User manual

M8CD / M8CD1

EM-5489 Rev.2P. 1 / 2

BEFORE USE ....

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

package you received as 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.

Check that model No. described on specification label is

exactly what you ordered.

■ INSTRUCTION MANUAL

This manual describes necessary points of caution when you

use this product, installation, connection and basic mainte-

nance procedures.

POINTS OF CAUTION

■ M8CD1: CONFORMITY WITH EC DIRECTIVES

• Functional insulation is maintained between signal input

and output.

• The equipment must be mounted inside a panel.

• Install lightning surge protectors for those wires connected

to remote locations.

• Insert a noise filter for the power source, input and output

connected to the unit. COSEL Noise Filter Model NAC-06-

472, TDK Noise Filter Model ZCAT 3035-1330 or equivalent

is recommended.

• The actual installation environments such as panel con-

figurations, connected devices, connected wires, may affect

the protection level of this unit when it is integrated in a

panel system. The user may have to review the CE require-

ments in regard to the whole system and employ additional

protective measures to ensure the CE conformity.

■ ENVIRONMENT

• When heavy dust or metal particles are present in the air,

install the unit inside proper housing and ventilate it.

• 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 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

cables, etc.

■ 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.

INSTRUCTION MANUAL

MODEL

DELAY BUFFER

M8CD

M8CD1

Time Constant Adj.

Specification

Label

Span Adj.

Zero Adj.

Mounting Screw

Body

■ 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.

COMPONENT IDENTIFICATION

■BOTTOM VIEW

• Time Constant Adjustment

Turning the potentiometer clockwise (MAX) increases the

time constant, counterclockwise (MIN) to decrease.

INSTALLATION

Use Installation Base (model: M8BS❑).

MAX

MIN

Time Constant Adj.

M8CD / M8CD1

EM-5489 Rev.2P. 2 / 2

ADJUSTMENT PROCEDURE

This unit is calibrated at the factory to meet the ordered

specifications, therefore you usually do not need any calibra-

tion.

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.

(Output 1 and Output 2 are linked.)

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 procedure

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.

M-SYSTEM WARRANTY

M-System warrants such new M-System product which it manufactures to be free from defects in materials and workmanship during the 36-month period following the date that such

productwasoriginallypurchasedifsuchproducthasbeenusedundernormaloperatingconditionsandproperlymaintained,M-System'ssoleliability,andpurchaser'sexclusiveremedies,

under this warranty are, at M-System's option, the repair, replacement or refund of the purchase price of any M-System product which is defective under the terms of this warranty. To

submit a claim under this warranty, the purchaser must return, at its expense, the defective M-System product to the below address together with a copy of its original sales invoice.

THIS IS THE ONLY WARRANTY APPLICABLE TO M-SYSTEM PRODUCT AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING ANY IMPLIED

WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. M-SYSTEM SHALL HAVE NO LIABILITY FOR CONSEQUENTIAL, INCIDENTAL OR

SPECIAL DAMAGES OF ANY KIND WHATSOEVER.

M-System Co., Ltd., 5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN, Phone: (06) 6659-8201, Fax: (06) 6659-8510, E-mail: [email protected]

–

Installation Base

OUTPUT 1

–

OUTPUT 2

POWER

–

INPUT

I/O PINS

17.5(.69)

48 (1.89)

75 (2.95)

83 (3.27)

TERMINAL CONNECTIONS

Connect the unit as in the diagrams below.

■EXTERNAL DIMENSIONS mm (inch)

■CONNECTION DIAGRAM

CHECKING

1) Terminal wiring: Check that all cables are correctly

connected 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.

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