SCAN20 Series Gas Detection Controller

SCAN20 Series Gas Detection Controller USER S MANUAL Code Number 2071 1022

SCAN20 USER S MANUAL Code no. 2071 1022 Page 1/14 Foreword This manual is made for SCAN20 Controllers equipped with the software version 1.11 or later. We recommend that the manual is stored near to the main unit. On guarantee and service matters, contact the DETECTOR Oy service division, see SPARE PARTS AND TECHNICAL CONSULTATION at the end of this manual. We are at Your service on all questions about our equipment. DETECTOR OY Telekatu 8 FI-20360 TURKU FINLAND Tel. +358 2 434 0150 Fax +358 2 434 0170 www.detector.fi detector@detector.fi Copying contents of this booklet is strictly forbidden without written permission from Detector Oy. All efforts have been made to ensure the content of this booklet to be correct, however Detector Oy does not take responsibility for damage caused by errors or missing information in this booklet. Technical specifications may change without prior notice.

Code no. 2071 1022 Page 2/14 SCAN20 USER S MANUAL CONTENTS 1. ACTIVATING THE EQUIPMENT... 3 2. MAIN MENU... 3 3. HISTORY... 4 4. SETTINGS... 4 5. SENSOR SETTINGS... 5 6. ALARM SETTINGS... 6 7. OCCASION OF ALARM... 7 8. LINEARIZATION TABLES... 8 9. GENERAL SETTINGS... 8 9.1 Date and time... 9 9.2 Relay control... 9 9.3 Modem control... 10 9.4 Calibration... 10 9.5 Password... 11 9.6 Output scaling... 11 9.7 Output calibration... 12 10. DISPLAYS... 12 11. RELAY TEST... 13 SPARE PARTS AND TECHNICAL CONSULTATION... 14

SCAN20 USER S MANUAL Code no. 2071 1022 Page 3/14 1. ACTIVATING THE EQUIPMENT When Scan20 series gas detection controller is powered it displays the program version on the screen. After the activation SCAN20 starts in a measurement display. Measurement points Measurement results Image 1 Measurement display and control panel 2. MAIN MENU The main menu can be accessed by pressing the MENU button on the control panel. Move the cursor by pressing the up/down arrow button and select the desired choice by pressing ENTER button. Return to the measurement display by pressing MENU or RESET button. ARROW ENTER Image 2 Main menu Menu display Cursor RESET MENU

Code no. 2071 1022 Page 4/14 SCAN20 USER S MANUAL 3. HISTORY By choosing HISTORY in the main menu, the alarm history of each channel will be displayed. First SCAN20 asks for the channel which can be chosen by pressing up/down arrow buttons and selected by pressing ENTER button. Image 3 Choosing the channel of the alarm history The history of one channel includes 48 latest alarm events. The information of one alarm event includes time, date and alarm action (SENSOR FAILURE, SENSOR FAILURE OFF, HIGH LIMIT ALARM, LOW LIMIT ALARM or ALARM OFF). The alarm history shows also the number of the alarm limit and the measurement result. The latest alarm is shown first. The history events can be browsed by pressing the up/down arrow buttons. Return to the main menu by pressing MENU button. 4. SETTINGS By selecting settings in the main menu, the settings menu is displayed. The cursor can be moved by pressing up/down arrow buttons and selection made by pressing ENTER button. Return to main menu by pressing MENU button. Measurement settings Alarm settings Linearization tables General settings Image 4 Settings menu

SCAN20 USER S MANUAL Code no. 2071 1022 Page 5/14 After selecting one of choices in the settings menu, a five number password is asked. Password is needed when any of the settings is browsed or changed. The cursor can be moved by pressing left/right arrow buttons and the number changed by pressing up/down arrow buttons. The password is accepted by pressing ENTER button. If the password is wrong, the controller will return to the measurement display. Image 5 Password 5. SENSOR SETTINGS In the sensor settings page the measurement and sensor settings of each channel can be changed. Number of the channel The Point text Signal type Range low limit Unit Image 6 Measurement settings Range high limit First the displayed channel (POINT) is chosen by pressing up/down buttons and select by pressing ENTER button. After that the display shows the settings of the chosen channel and the cursor moves to the first character of the point text. The cursor can be moved by pressing left/right arrow buttons and the characters changed them by pressing up/down arrow buttons. The point text is accepted by pressing ENTER button. After accepting channel ID the cursor moves to the selection of the signal type. The signal type can be chosen by pressing up/down arrow buttons and accepted by pressing ENTER button. The signal types are: UNDEF = Not defined (Channel is not connected) 0-20mA = current 0-20 ma 4-20mA = current 4-20 ma 0-1 V = voltage 0-1 V SEMIC. = Semiconductor sensor OLCT50 = EX-catalytic sensor TABLE X = According to the linearization table. Tables 1-4 can be independently defined in SETTINGS menu ->LIN. TABLES) (look at section 8).

Code no. 2071 1022 Page 6/14 SCAN20 USER S MANUAL After the signal type has been selected, the low limit of the scale and the place of the decimal point will be set. The low limit of the scale has five numbers and one point (e.g. 0000.0) (The place of the decimal point cannot be changed elsewhere). Accept the low limit of the scale by pressing ENTER button. For example: when the sensor has been defined as 4-20 ma and the measurement result, when the input is 4mA, is wanted to be 00.000, the low limit value should be 00.000. Next the high limit of the scale can be set. It is done the same way as the low limit except the place of the decimal point is defined in the value of the low limit of the scale therefore it can not be changed here. After setting the high limit of the scale, the measure unit will be set. It is done the same way as the channel ID. For example: PPM or %LEL (max. 4 characters) and accept it by pressing ENTER button. After accepting the unit, the display shows the settings of the next channel. The settings of the channel are valid only after accepting all settings of the channel by pressing ENTER button. 6. ALARM SETTINGS In alarm settings page the direction of limit activity, alarm limit, control relay, delay and hysteresis can be set. After accepting the password the alarm settings of the first alarm limit of the channel 1 are displayed. Number of the channel Direction of alarm limit activity Alarm limit Delay Image 7 Alarm settings Control relay 2 Control relay 1 Hysteresis After choosing the channel (it is done the same way as in measurement settings), the direction of alarm limit activity of the first alarm limit can be set.

SCAN20 USER S MANUAL Code no. 2071 1022 Page 7/14 Choose the direction of the alarm limit activity by pressing up/down arrow buttons: OFF = The limit is not in use HIGH = High limit LOW = Low limit S HI = High limit + Solenoid valve control (S HI/S LO function, see section 7.) S LO = Low limit + Solenoid valve control After the direction of the limit activity has been chosen, it can be accepted by pressing ENTER button. The value of the alarm limit can be changed the same way as the scale in measurement settings: choose the character by pressing left/right arrow buttons and change the character by pressing up/down arrow buttons. Accept the alarm limit value by pressing ENTER button. After accepting the alarm limit you can change the control relay, delay (in form xx.yy xx=minutes, yy=seconds) and hysteresis. All of these values can be chosen the same way that is described above. 7. OCCASION OF ALARM When the alarm limit is exceeded, a LED light in the panel and selected relay is activated. The relay and the LED light deactivate when the gas concentration is amount of hysteresis lower than the alarm limit. The relay can also be deactivated by pressing the RESET button if the relay is programmed to be resettable (see 9.2 Relay control). Notice: Because there might be more than one alarm limit that is controlling one relay, the relay does not deactivate until there is no alarm limit controlling it. The third alarm limit action: when the third alarm limit is exceeded in addition to the actions mentioned before, the buzzer is activated and information about the alarm is displayed on the screen. The buzzer and relay (if it is programmed to be resettable) can be deactivated by pressing RESET button. The LED light of the third alarm limit does not deactivate until the alarm is off. When alarm limit has been set as S HI/S LO (limit + solenoid valve control) and it is exceeded, the limit LED light and SOL. VALVE LED light is turned on and the programmed relay as R1 activates. If the relay is programmed as resettable it can be reset during the alarm otherwise it must be reset after the alarm is off. Solenoid valve action does not reset the relay automatically so it must be reset by pressing RESET button. S HI/S LO function affects only the set control relay 1 (R1, see section 6. Alarm Settings). Control relay 2, R2, is not affected by S HI/S LO function. SENSOR FAULT When SCAN 20 sees a sensor fault, the FAULT LED light turns on, the buzzer is activated and information about the alarm is displayed on the screen. The buzzer can be deactivated by pressing RESET button. The LED sign and the relay will not be deactivated until the alarm is off.

Code no. 2071 1022 Page 8/14 SCAN20 USER S MANUAL 8. LINEARIZATION TABLES After the given password is accepted, the values of the first linearization table are displayed. Signal values Number of the table Display values Image 8 Linearization table First the displayed table can be chosen by pressing up/down arrow buttons and selecting it by pressing ENTER button. After selection the signal values (IN mv) and the corresponding display (OUT) values can be set. The linearization table ends when the given signal value is smaller than the preceding signal value. The maximum amount of linearization points is 10. The signal values should be in growing order but the display values can change in any direction. (4 ma is 400 mv as the signal value and 20 ma is 2000 mv) 9. GENERAL SETTINGS After the given password is accepted the general settings page is displayed: Image 9 General settings Image 10 General settings continued

SCAN20 USER S MANUAL Code no. 2071 1022 Page 9/14 9.1 Date and time At date and time page you can set the date and time in form day-month-year and hours:minutes:seconds. SCAN20 is battery protected so it preserves the date and time during power loss. Date Time Image 11 Date and time 9.2 Relay control In relay control page the resettability and directions of the relay actions can be set. First the relay control page displays information about the relay settings. Image 12 NO/NC Relay control information Image 13 NR/R Relay control information After the information pages the relay settings are displayed. Direction Resettability Image 14 Relay control In relay control table the relay direction activity (NC=normally closed/no=normally open) and the resettability of the relay can be set. The relay settings can be changed by pressing up/down arrow buttons and the cursor can be moved by pressing left/right arrow buttons. When the relay control table is ready accept it by pressing ENTER button.

Code no. 2071 1022 Page 10/14 SCAN20 USER S MANUAL 9.3 Modem control In modem control page the usage of the RS-232 serial interface can be defined. The interface can be set to be used as a service/gaslog program (option) interface or a GSM-modem (option) interface. The usage can be changed by pressing up/down arrow buttons and accepted by pressing ENTER button. Image 15 RS-232 Usage: Service/Gaslog Image 16 RS-232 Usage: GSM-Modem If the usage of the RS-232 interface is set as GSM-Modem the GSM settings will be displayed after the interface usage selection. In GSM settings you can set the controller identification (12 characters), which is shown in the alarm message, and three GSM numbers (in international form, including the + sign) where the alarm information will be sent as an SMS message. Both controller identification and GSM numbers can be set by pressing arrow buttons and accepted by pressing ENTER button. Image 17 Setting the mobile phone numbers for SMS message 9.4 Calibration In calibration of the inputs the zero calibration is done first. During the zero calibration all the inputs should be disconnected. Accept the calibration by pressing ENTER button. Image 18 Zero calibration

SCAN20 USER S MANUAL Code no. 2071 1022 Page 11/14 After the zero calibration SCAN20 performs the gain calibration which starts from channel 1. The gain calibration is done by connecting 20mA current in the input of the first channel and accepting the calibration by pressing ENTER button. After the calibration of the first channel, the same gain calibration procedures are done for the second channel. The gain calibration procedures are continued until the calibration is done for all channels. Image 19 High calibration 9.5 Password In password page you can change the password of the equipment. The new password is asked immediately and it is set by pressing arrow buttons and accepted by pressing ENTER button. The Detector Oy service division should be informed about the new password (see SPARE PARTS AND TECHNICAL CONSULTING). 9.6 Output scaling In output scaling you can first set the channels that will affect the output current (POINT). In SCAN24 model the choices are 1, 2, 3, 4, 1&2, 3&4 or all and in SCAN22 model 1, 2 or 1&2. Setting can be changed by pressing up/down arrow buttons and accepted by pressing ENTER button. After the POINT setup you can set the LO value which is the output current value when measurement result is zero. After setting the LO value you can set the HI value which corresponds the output current value at maximum measurement result. The correspondence between current and number is e.g. 4mA = 400 and 20mA = 2000. Low output current Affecting channels High output current Image 20 Output scaling

Code no. 2071 1022 Page 12/14 SCAN20 USER S MANUAL 9.7 Output calibration The output calibration is performed as current measurement first from output 1. You measure the value of the output current and set it to 4mA by pressing up/down arrow buttons. When the output current is set to 4mA accept it by pressing ENTER button. After the 4mA calibration measure 20mA from output 1 and perform the same procedures as in 4mA calibration. After accepting the 20mA the calibration is done for output 2. Image 21 Output calibration 4mA Image 22 Output calibration 20mA 10. DISPLAYS On displays page there are the present measurement value and the minimum and maximum measurement values displayed. Reset the minimum and maximum values by pressing ENTER button. The shown channel can be chosen by pressing up/down arrow buttons. Minimum measurement value Present measurement value Maximum measurement value Image 23 Displays page shows the present measurement value and the resettable minimum and maximum values.

SCAN20 USER S MANUAL Code no. 2071 1022 Page 13/14 11. RELAY TEST From relay test page you can set the alarms off and perform a relay test. Image 24 Alarms Off/Relay test When the alarms are set off (ALARMS OFF) a continuous yellow LED light is activated. ALARMS OFF does not reset the old alarms it only prevents new alarms from activating so the old ones will remain active. The alarm activity will return to normal when alarms are set on or at latest after two hours when alarms will return to normal automatically. ALARMS OFF LED light Image 25 Alarms Off When RELAY TEST has been chosen, all relays will activate, LED lights will turn on and the buzzer will activate. Relay test ends when MENU button is pressed. Image 26 Relay test

Code no. 2071 1022 Page 14/14 SCAN20 USER S MANUAL SPARE PARTS AND TECHNICAL CONSULTATION Each of the AVACO SYSTEMS equipment is on the manufacturer s database. By giving DETECTOR Oy the equipment number and indicating the type of failure, service and spare part will be delivered. On services, spare parts and calibration questions, kindly contact DETECTOR Oy service division: DETECTOR OY Telekatu 8 FI-20360 TURKU FINLAND Tel. +358 2 434 0150 Fax +358 2 434 0170 www.detector.fi service@detector.fi

DETECTOR OY Telekatu 8 FI-20360 TURKU FINLAND Tel. +358 (0)2 434 01 50 Fax +358 (0)2 434 01 70 www.detector.fi detector@detector.fi