M-system 20VS10D Manuale utente

20VS1D

P. 1 / 2EM-4431

ISOLATION AMPLIFIER

(top adjustment, for current output, output isolation) MODEL 20VS1D

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:

Ampliﬁer ....................................................................... (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:

15V DC ±2%, approx. 35mA with 20mA output

•Whenthereisspikenoisesinthepower,makealterwith

an appropriate capacitor and inductor to cut it off.

■ENVIRONMENT

•Indooruse

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

install the unit inside proper housing with sufﬁcient ven-

tilation.

•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60°C(32

to140°F)withrelativehumiditywithin10to95%RHin

order to ensure adequate life span and operation.

■WIRING

•Do not install cables (power supply, 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.

•Mounting multiple isolator modules on single printed

wiring board could cause beat. In such case, use the way

shown as below to make the power supply oscillation fre-

quency of each module to a same one for prevention.

22kΩ 22kΩ

20VS1D

■INSTALLING THE MODULE

Whenitisinstalledontheprintedwiringboard,landdiam-

eterø1.5andthrough-holeø0.9arerecommended.

■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.

•With voltage output, do not leave the output terminals

shortcircuited for a long time. The unit is designed to en-

dure it without breakdown, however, it may shorten ap-

propriate life duration.

18 (.71) 49 (1.93)

12345678915161718

22212019

36353433

0.5 (.02)

0.3 (.01) 0.5 (.02)

14 (.55)

5.5 (.22)

20.32 (.80) 13.97 (.55)

7.62 (.30)

2.54 (.10)

1.27 (.05)

19.25 (.76)

SPAN

ZERO

TERMINAL CONNECTIONS

■EXTERNAL DIMENSIONS mm (inch)

■TERMINAL ASSIGNMENTS

–

OUTPUT

+16V

COM (0V)

–

16V

–

EXCITATION

INPUT

POWER SUPPLY

*To be used in the printed wiring board on which the unit is mounted.

20VS1D

P. 2 / 2EM-4431

APPLICATION EXAMPLE

VREF

VOUT

IC1 IC2

10kΩ

6.08kΩ +

–

INPUT VIN

Toadjustzeroandspan,usetopadjusters.

Forinput1-5VDC,outputis4-20mADC.

Inordertoshiftthezeroatinput,supplyreferencevoltage

topin21.Thefollowingformulashowshowmuchthezero

shifts. (input signal at pin 20 = VIN; output signal at pin 1 =

VOUT; reference voltage = VREF;zeroshift=VOUTSHIFT.)

10kΩ

VOUTSHIFT = - (––––––) × VREF

   R1

(10kΩ+R1)

VOUT = ––––––––– × VIN + VOUTSHIFT

   R1

In order to attenuate input signal, connect a resistor to pin

22. The following formula shows the attenuated output.

VOUT = (––––––––––––) × VIN

   R2+6.08kΩ

External resistors and adjusters make zero and span ad-

justmentavailable.

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

product was originally purchased if such product has been used under normal operating conditions and properly maintained, M-System’s sole liability, and purchaser’s exclusive

remedies, 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: info@m-system.co.jp

■PIN ASSIGNMENT

NO. FUNCTION

1 Current Output (+)

2 Current Output (-)

3NC

4NC

5NC

6NC

7Excitation(+)

8Excitati

on (-

)

9Excitation(COM)

15 Power Supply (+)

16 Power Supply (-)

17 Synchronous Input

18 Synchronous Output

19 Input (-)

20 Input (+)

21 Input Ampliﬁcation

22 Input Attenuation

33 NC

34 NC

35 NC

36 NC

CHECKING

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

nected according to the connection diagram.

2) Power input voltage: Check voltage across the pins.

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.

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.

Indice

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