Manostar EMD8A066 Manuel utilisateur

RoHS

READ THE INSTRUCTION MANUAL BEFORE USING

INSTRUCTION MANUAL

MANOSTAR DIGITAL SENSOR

E M D 8A066

N o . TR- E M D 8A066- E 0 0

1-2-3,Nishi-shiriike-cho,Nagata-ku,Kobe,Hyogo 653-0031 JAPAN

TEL. +81󳞥78󳞦-631-6000 FAX. +81󳞥78󳞦-631-6020

 
 
 
 
TABLE OF CONTENTS 
 PAGE 
INTRODUCTION ......................................................................................................................1 
 
󳉁󳞫PRECAUTIONS........................................................................................................2 
 
󳉂󳞫SPECIFICATIONS 
1󳞫Outline drawing....................................................................................................3 
2󳞫Function 
2-1 Display function ...........................................................................................4 
2-2 Digital communication function (MODBUS)........................................5 
2-3 Max. and min. value memory function ..................................................5 
2-4 Function of low power consumption.....................................................5 
2-5 Function of test mode ...............................................................................5 
2-6 Function to clear set value......................................................................5 
2-7 Function of set value protecting............................................................6 
 
󳉃󳞫INSTALLATION 
1󳞫Installation conditions ......................................................................................6 
2󳞫Installation of instrument ...............................................................................6 
3󳞫Wiring.........................................................................................................................6 
4󳞫Piping 
4-1 Measured pressure and connection of piping ....................................8 
4-2 Piping material..............................................................................................9 
4-3 Caution of piping..........................................................................................9 
 
󳉄󳞫OPERATION 
1󳞫Before trial running ........................................................................................ 10 
2󳞫Operation panel ................................................................................................ 10 
3󳞫How to operate 
3-1 Change-over procedure of mode........................................................ 10 
3-2 Basic operation in each mode.............................................................. 13 
3-3 Operation of test mode.......................................................................... 14 
3-4 Calibration for zero adjustment........................................................... 14 
4󳞫MODBUS communication 
4-1 Communication specifications ............................................................. 15 
4-2 Communication setting........................................................................... 15 
4-3 Structure of message frame................................................................. 15 
4-4 Message examples ................................................................................... 15 
4-5 MODBUS address map........................................................................... 18 
4-6 Status history list .................................................................................... 19 
4-7 List of communication error history ................................................. 19 
 
󳉅󳞫INFORMATION ON SOFTWARE .......................................................... 20 
 
󳉆󳞫PRODUCT WARRANTY ................................................................................ 21 
 

INTRODUCTION

Thank you very much for purchasing of “MANOSTAR DIGITAL SENSOR EMD8A”.

Features

󳜪Compact size

This instrument is a compact digital micro differential pressure gage composed of the diaphragm type detection part and

display part incorporated in 24 ×48 size.

󳜪Digital communication input/output (MODBUS)

Thanks to the compatibility with RS-485 (MODBUS/RTU), it is possible to acquire measurement values as digital values

and change settings from a remote location.

󳜪Employing an easy-to-see large seven segments LED

Red-colored seven segment LED, 12 mm high character of high visibility, is used for 3･1/2 digits.

󳜪Simple operability

This machine, designed for dedicated to pressure measurement, has simple operation set menu.

󳜪Low power consumption

The electric power consumption is reduced by lowering the display luminance of LED.

󳜪Setting value protecting function

It prevents a setting value to mistake by incorrect operation.

󳜪Test mode function

Even when pressure is not actually applied, by setting a simulated pressure, it is possible to check the operation at the time

of installation and inspection.

󳜪Max. and min. value memory function

Max and min value of the measurement pressure are retained and it displays it.

󳔈

󳞠

Caution

To ensure your safety in using this instrument:

󳜪Be sure to read the instruction manual carefully before using this instrument so that you can use

it properly.

Wrong use may result in failure of this instrument and lead to its damage and accident.

󳜪This manual should be kept in a proper place so that you can refer to it any time you need.

󳉁󳞫PRECAUTIONS

󳔈

󳞠Warning

󳜪Do not use the instrument where flammable gas is present.

The instrument is not explosion-proof. Do not use instruments in the circumstance where flammable gas is present. It

may cause explosion.

󳜪Do not use the instrument at the place where corrosive gas is present.

he instrument is not corrosion resistance construction. Measuring corrosive gas may corrode the receiving element and

housing material of the instrument. It is expected that corrosive gas leaked out of the instrument will harm a person.

󳜪Do not apply the pressure to the instrument more than it can withstand.

The diaphragm and the retainer are broken and cause of injury or accident, etc. disaster if the pressure exceeding

withstanding pressure of the pressure receiving element is applied to the instrument. The case body and the transparent

cover of the instrument are broken and cause of injury or accident, etc. disaster if the pressure exceeding withstanding

pressure of the instrument body is applied to the instrument.

・The instrument is measurable for air and non-corrosive gas only.

The machine is exclusive use of dry air (85%RH or less). Using measuring the water or oil it may be damaged and causes

the accident.

󳜪Avoid using where instrument is exposed to many vibration and impact.

Using this instrument where intensified vibration and impact may be damaged instrument. It is expected that gas leaks of

instrument which harms a parson.

󳜪Do not exceed rated voltage in using.

Using this instrument by exceeding rated voltage may cause fire or electric shock.

󳜪Wire correctly.

Incorrect wiring may cause fire.

󳜪Do not exceed rated surrounding temperature, humidity and altitude in use.

Using this instrument by exceeding rated surrounding temperature and humidity and altitude it may be damaged and

cause the accident.

󳜪Do not disassemble or reconstruct your instrument.

It may void your warranty.

󳔈

󳞠Caution

󳜪Operate the keys on the operation panel with the fingers.

Pressing a key with a hard or sharpened object may damage or break the surface of the key, possibly leading to a failure.

󳜪As to where to install and how to install the instrument, be sure to follow the instruction manual so as to ensure a proper

method.

󳜪Use the instrument indoors.

󳜪In case of not being installed in dry and well-kept clean locations, the instrument must be enclosed in box.

󳜪Keep as great a distance as possible from a device that generates strong electromagnetic fields, and then use this

sensor.

If the surrounding area of the installation location has a strong electromagnetic field, the pressure indication accuracy

may be lowered.

󳜪As the DC power supply to be connected to this sensor, use NEC (National Electrical Code) Class 2 power supplies or

LPS (Limited Power Source) power supplies.

󳜪Do not use organic solvent for cleaning.

Use of organic solvent, such as thinner and benzene, to remove surface dirt and stain may cause melting and cracking on

the surface. To remove dirt and stain, be sure to wipe them off with a wet cloth using diluted neutral cleanser.

󳜪Dropping the product.

Product is a precision instrument. If you drop the product, there is a possibility that the exterior, also the interior

mechanism damage.

󳜪Removal of the piping

If you replace the old pipes, please do not pull the pipe with a strong force. There is a possibility that the pipe cap is

broken.

󳉂󳞫SPECIFICATIONS

1󳞫Outline drawing

Fig.2-(1) EMD8A066 outline drawing

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󲺐󲺼󲺻󲺻󲺲󲺰󲻁󲺼󲺿

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󲺟󲺖󲺡󲺠󲹭󲺐󲺼󲺻󲺻󲺲󲺰󲻁󲺼󲺿󲹭󳞳󳟍

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2󳞫Function

The pressure sensor of this product can measure differential pressures. If the pressure on the H side is higher than that

of the L side, the pressure display shows a positive value.

This sensor performs A/D conversion of the signal from the pressure sensor, then performs zero compensation and

movement average processing, and finally displays the value and performs the digital communication output.

2-1 Display function

1󳞦Display filter

The number of the moving average filter for display is set in the display filter setting mode. When the change of

the measurement pressure is large, the change of the display value can be reduced by enlarging the average

number of the moving average function. The response is late according to large a set value of the filter mode.

It is possible to independently set the movement average filter for display use and that for digital communication

output use.

When the instrument is shipped from our factory, is set to standard "1.0 sec.".

Display filter mode

Average processing (Response time)

Setting value

F0.2

High speed (0.2 sec.)

F1.0

Standard speed (1.0 sec.)

F2.0

Low speed 1 (2.0 sec.)

F4.0

Low speed 2 (4.0 sec.)

2󳞦Overrange warning

The display pressure "FFF" and informs of the over range when pressure which exceeds the ratings pressure

joins in this instrument. The display pressure "-FFF" when the difference pressure is negative.

・Over range pressure

Mono (single) pressure range ：110% or more and -10% or less of the ratings pressure.

Zero center (+-) pressure range ：60% or more and -60% or less of the ratings pressure.

3󳞦Function of display low cut

It is a mode that compulsorily sets the indicated value to 0 when the measurement pressure indicated value is

about 0. When setting value is “CT2”(2%FS), the value of less than ±2%FS becomes 0 displays. Please set

CT0 (0%FS) when you do not use the function.

The low cut function applies only to the displayed value and does not affect the digital communication output.

4󳞦Function of sign reversal of display measured

The sign of the display of the pressure display mode and the max and the min value display mode is inverted. This

function is used to invert the sign when negative pressure is measured. Please refer to P.8 “4-1 Measured

pressure and connection of piping“for the usage of this function.

Fig.2-(2) Function block diagram

LED display

Digital

communication

RS-485

communication

circuit

Amplifier

Pressure sensor A/D

converting

Value to be

measured processing

Zero correction

Moving

average

for output

Moving

average

for display

2-2 Digital communication function (MODBUS)

1󳞦Digital communication (input/output)

By means of RS-485 (MODBUS/RTU) communication, it is possible to acquire pressure measurement values,

execute zero adjustment, and change the various settings.

For the items and effective value ranges, refer to P.18 “4-5 MODBUS address map“.

2󳞦Output filter

The number of the moving average filter for digital communication output is set in the output filter setting mode.

When the change of the measurement pressure is large, the change of the output value can be reduced by

enlarging the average number of the moving average function. The response is late according to large a set value

of the filter mode. It is possible to independently set the movement average filter for display use and that for

digital communication output use.

When the instrument is shipped from our factory, is set to standard "1.0 sec.".

Output filter mode

Average processing (Response time)

Setting value

F0.2

High speed (0.2 sec.)

F1.0

Standard speed (1.0 sec.)

F2.0

Low speed 1 (2.0 sec.)

F4.0

Low speed 2 (4.0 sec.)

3󳞦Function of sign reversal of digital communication output

This function inverts the signs of pressure measurement value, maximum value, and minimum value, and then

outputs them. This function is used to invert the sign when negative pressure is measured. Please refer to P.8

“4-1 Measured pressure and connection of piping“for the usage of this function.

2-3 Max. and min. value memory function

Each value is displayed and the max. value and the min. value of the pressure measurement value can be reset in

the max. value memory display mode or the min. value display mode. the max. value and the min. value memory is

reset once the power supply to this sensor is turned off.

2-4 Function of low power consumption

The electric power consumption is reduced by lowering the display luminance of LED. It is not influenced about

other functions at all. The display luminance only at the pressure display mode falls and other program modes etc.

become usual luminance’s when the function is on.

2-5 Function of test mode

This function tests whether the parameter setting is correctly set when the device is set up and checked. In this

mode, simulative pressure can operate the device without applying actual pressure. This function is used to check

the operation by changing the simulative pressure. The simulative-pressure-value is automatically set to

present-pressure-value at the time of shifting to test-mode. A simulative setting pressure is not preserved. The

display blinks for the test mode recognition when shifting to the test mode. It is recognized that the blinking

display is not a pressure display mode. The pressure display mode by the passage of 15 seconds in the no operation

time doesn't return in this mode automatically.

2-6 Function to clear set value

In the setting clear mode, it is possible to revert the setting values in each mode to the factory default setting

values.

For the factory default setting values, refer to P.12 “Mode table“.

󳔈

󳞠

Caution

Performing setting clear deletes the current setting values.

2-7 Function of set value protecting

It becomes impossible to change set value by each program mode when set value protecting is set. It prevents a set

mistake by the miss operation etc. etc. Please release protecting only when the setting change is necessary.

󳉃󳞫INSTALLATION

1󳞫Installation conditions

The following places should be avoided for installation of this unit.

・Don't install where there are intense vibration and impact are applied to this unit.

・Don't install where there is sudden fluctuation of surrounding temperature or place where this unit is exposed to

direct sunlight.

・Don't install where high humidity exists, where water or oil splashes over the unit or where there is much dust.

・Don't install where corrosive gas or flammable gas is generated.

2󳞫Installation of instrument

Insert EMD8A body into the panel hole and press the flange of EMD8A enough against the panel so that it hits the panel

surface.

󳔈

󳞠

Caution

󳜪installation position : Vertical only.

3󳞫Wiring

External connection diagram is shown in Fig.3- (1). The connection example when an external equipment is connected

is shown in Fig.3- (2).

When using MODBUS communication, it is possible to connect multiple pieces of this sensor to a single master.

(According to RS-485 standard, it is possible to connect 31 pieces of this sensor at maximum.)

While the maximum communication distance is 500 m, it varies depending on the installation conditions (number of

connected products and noise environment).

Connect a terminating resistor at the end of the line as necessary.

󳔈

󳞠

Caution

󳜪Do not let rating of each terminal go beyond the specifications.

󳜪When wiring, be sure to separate the wiring from the wiring of power supply.

Fig.3-(1) External connection diagram EMD8A066type

CN1-1 Power supply +󳞥12 to 24 VDC󳞦

CN1-2 Power supply -󳞥0 V󳞦

CN1-3 RS-485 A+

CN1-4 NC󳞥unused󳞦

CN1-5 NC󳞥unused󳞦

CN1-6 RS-485 B-

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󲷓

󲷒

󲷑

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Fig.3-(2) Example of connection EMD8A066 type

Accessory

󳜪RITS plug connector 6P (produced by TE Connectivity)

Product code

Color of cover

Applied cable

Nominal

cross-sectional areas

O.D of the wire cover

1473562-6

Yellow

0.1󳟻0.5mm2

1.0󳟻1.15mm

󳔈

󳞠

Caution

󳜪For crimping wire to connector, a RITS plug connector must be used.

󳜪RITS plug connector is not compatible to other manufacturer's connector because it is not compliant

with the industry standard "e-CON". (The standard "e-CON" is only used in Japan.)

󳜪For crimping wire to connector, a specific RITS plug connector (TE Connectivity),

product number 1729940, must be used.

󳜪For further inquiry on the detail of RITS plug connector and the other tools, please contact

TE Connectivity directly.

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4󳞫Piping

The instrument, a differential pressure gage, is provided with

taps at the rear side : one for high pressure (HIGH) and the

other for low pressure (LOW).

Depending on the application and use, connect piping as follows.

4-1 Measured pressure and connection of piping

Please connect the piping shown in the table below according

to the measured pressure, and set the function of inverting

sign of measurement display.

Measurement pressure

Differential pressure

Gage pressure

Usage

Differential pressure

measurement

Positive pressure

measurement

Negative pressure

measurement

Piping

High pressure side

tube tap

HIGH

Measurement pressure

(high)

Measurement pressure

(positive pressure)

Open to atmosphere

Low pressure side

tube tap

LOW

Measurement pressure

(low)

Open to atmosphere

Measurement pressure

(negative pressure)

Function sign reversal of

display measured

oFF

Function of sign reversal of

digital communication output

oFF

󳔈

󳞠

Caution

For gage pressure measurement with the instrument of zero-center range (+ -) , connect piping to high

pressure tap in order to match symbol on the display (+ , -) and the actual polarity inside the tubing

pressure.

For zero-center range (+−) , unless there is a special reason, set P.4 󳆟Function of sign reversal of

display measured󳆟and P.5 󳆟Function of sign reversal of digital communication output󳆟to OFF.

󳔈

󳞠

Caution

Fig.3-(5)

When one side of tap is open to

atmospheric air, be sure to provide air vent

at the outside of panel, or the port released

and open in the panel (box of device etc.) ,

has been exposed to in-panel pressure

generated by air flow to cool down inside of

panel forcibly by fan, etc.

Fig.3-(4) Layout of tube tap

High pressure

Side tube tap

(HIGH)

Low pressure

side tube tap

(LOW)

󲷤󲷬󲷣󲷗󲷠

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