Ados MWS 897 Скачать руководство пользователя страница 3

ADOS GmbH

MWS 897

Page  1

1.

Introduction

The ADOS gas warning unit is a microcontroller-aided multi-channel gas monitoring unit with warning
and control functions.

Various  types  of  sensor  can  be  connected  via  a  4-20mA  current  interface,  using  2  or  3  wire
technique.  

All information significant to operation, is displayed in clear on a 2-line and 16-digit display. The
information includes the actual gas value, measuring point, alarm status or fault.

The alarms and centralised malfunctions are indicated on LED´s. Three floating alarm outputs can be
used optionally for ventilation and alarm control. One relay is responsible for fault indication.

Two keys are used for operating the equipment. These keys, together with menu-assistance, are
used for setting minimal and maximum limit values, the measuring points, as well as other significant
parameters,  without  any  previous  knowledge  of  programming  skills.  Alarms  can  be  cancelled  by
keystroke. The alarm outputs can be tested without any application of gas.

The unit incorporates a RS232 interface for data communications and a voltage output of 0-5V.

The ADOS gas warning unit MWS 897, depending on the model, can be operated on 230 V~, 110 V~
or 24 V= voltage supplies.

The unit is enclosed in a plastic wall mounting housing, protection class IP 54.

2.

Operating Summary

Display and operating controls are located on the frontside of the unit. Two buttons are used for the
basic settings of the unit, stopping the measurement cycle, resetting the alarms and for performing
test routines.

The basic settings of the unit are menu assisted, via the LC-Display and the following keys.

“SELECT”

* switching between cyclic and stopping measure mode 
* selecting a menu item 
* change a value in a menu sub-item

“ENTER”

* for selecting a menu item
* to quit an alarm

By simultaneously pressing “ENTER” and “SELECT” keys, entry is made for the input of the code.
After having entered the right code (number of the unit type “897"), entry is allowed into the basic
adjustments. Here, all settings can be checked and modified if required.

A return back to the normal measurement cycle is made pushing the “SELECT” key or automatically
after 90 seconds, if no new key is pressed.

By pushing the “ALARM RESET / ENTER” key during measurement, the internal  buzzer can be
prematurely cleared. The alarm (LED & relay outputs) can only be cancelled if the alarm condition is
no longer present. Therefore it is not possible, if the actual gas value > limit. 

Содержание MWS 897

Страница 1: ...ntation and Control Trierer Str 23 25 52078 Aachen FRG T E L 49 0 241 9769 0 F A X 49 0 241 9769 16 E Mail i n f o a d o s d e Internet http www ados de Est 1900 Operating Instructions Multi channel Gas Warning Unit Issue 08 15 Version 1 1 ...

Страница 2: ... Menu Function Sensor 4 3 5 1 Menu Function Sensor Number 4 3 5 2 Menu Function Sensor Mute 4 3 5 3 Menu Function Sensor Limits 4 3 5 4 Menu Function Sensor Limit relay 5 3 5 5 Menu Function Sensor Buzzer 6 3 5 6 Menu Function Sensor Init 6 3 6 Menu Function RS232 7 3 6 1 Menu Function RS232 Output 7 3 6 2 Menu Function RS232 Baud 7 4 Maintenance work 7 5 Technical Data 8 6 Cable list 9 7 Terminal...

Страница 3: ...g unit MWS 897 depending on the model can be operated on 230 V 110 V or 24 V voltage supplies The unit is enclosed in a plastic wall mounting housing protection class IP 54 2 Operating Summary Display and operating controls are located on the frontside of the unit Two buttons are used for the basic settings of the unit stopping the measurement cycle resetting the alarms and for performing test rou...

Страница 4: ...This is indicated by a after the measuring point The first line of the display shows the actual or the average measure value the gas and the unit The second line shows the actual measuring point and the status of this sensor In case of a fault or because of special parameters being set the following messages can occur instead of the gas concentration the sensor is operating below its normal refere...

Страница 5: ...always be pressed for confirmation With the SELCT key you can browse through the menu without making any modification or you can select a menu item After selecting a menu item press the ENTER key and you can change the value with the SELECT key After confirmation with ENTER the value will be saved in memory An incomplete modification instruction is not saved without pushing ENTER If no further key...

Страница 6: ...me makes a restart 3 5 2 Menu Function Sensor Mute This menu item is used when it is required to switch temporarily a measuring point On or Off This function can be of use for example if a particular section area of the system has to be shut down Caution Responsibility of the system operator 3 5 3 Menu Function Sensor Limits Three limit values and characteristics can be set for each measuring poin...

Страница 7: ...for other functions Select measuring point select limit amount of relay assignment factory settings Sensor 1 Limit 1 K1 Sensor 1 Limit 2 K2 Sensor 1 Limit 3 K3 Sensor 2 Limit 1 K1 Sensor 2 Limit 2 K2 Sensor 2 Limit 3 K3 Sensor 3 Limit 1 K1 Sensor 3 Limit 2 K2 Sensor 3 Limit 3 K3 etc for example to generate a group indication with relay K3 use following configuration Sensor 1 Limit 1 K1 Sensor 1 Li...

Страница 8: ...sor Init Base settings for a measurement point gas format unit range Gas setting type of gas if the type of gas is not avaible edit the letters of User Format set the maximum number of digits in front of and after of the decimal place 2 1 00 0 1 2 0 00 3 0 000 Unit physical size of the measuring range for example Vol ppm LEL etc Range upper and lower measure range z B ADOS TOX CO 300 ppm MIN 0 und...

Страница 9: ... out refers to a twice yearly check that should be completed only by fully trained personnel The owner or operator of the system is offered the possibility of completing a maintenance contract with the manufacturer the ADOS GmbH company which will guarantee a smooth and efficient servicing by the company s own customer service The maintenance work can be divided into checking the sensor functions ...

Страница 10: ...0 10 Vol Other ranges on request Effect of temperature 3 for 20 C temperature change Ambient temperature 10 40 C Output signals Serial interface RS 232 Baud 9600 Data bits 8 Parity keine Stop bits 1 Protocol Hardware Analog output 0 5 V 3 alarm relay 230 V 450 VA 1 fault relay 230 V 450 VA Voltage supply 230V 50 Hz 115V 60 Hz optional 24V optional Power consumption 14 VA Dimensions WxHxD 225 x 180...

Страница 11: ... 3 x 1 5 mm2 Sensors J Y ST Y 2 x 2 x 0 8 mm2 screened bzw J Y ST Y 4 x 2 x 0 8 mm2 screened Ex Sensors NYM ST J 4 x 1 5 mm2 screened Warning banners and flash lights NYM J 3 x 1 5 mm2 Horns NYM J 3 x 1 5 mm2 Warning banners and flash lights NYM J 5 x 1 5 mm2 Limit value K1 K2 K3 NYM O 9 x 1 5 mm2 Fault K4 NYM O 3 x 1 5 mm2 ...

Страница 12: ...ADOS GmbH MWS 897 Page 10 Drawing no 890 5622 e MWS 897 with sensor GTR 196 Drawing no 890 5622 f MWS 897 with sensor ITR 498 7 Terminal schematic ...

Страница 13: ...ADOS GmbH MWS 897 Page 11 Drawing no 890 5622 g MWS 897 with sensor ADOS 592 TOX Drawing no 890 5622 h MWS 897 with sensor LCTR 903 ...

Страница 14: ...ADOS GmbH MWS 897 Page 12 Drawing no 890 5622 c MWS 897 24V DC Drawing no 890 5622 d MWS 897 USV ...

Страница 15: ...ADOS GmbH MWS 897 Page 13 Drawing no 890 5622 i MWS 897 230V with UPS 2000 ...

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