aSENSE MIII User Manual
Contents
1. to increase the set point value in steps of 50 ppm Push ESC to decrease the set point value in steps of 50 ppm Push ENTR once when the set point is set The display shows SP C Push ESC to return to DEFAULT Push MENU once to reach the setting of analogue outputs The display shows AOUt Push ENTR to reach the output to be set The display shows An and two digits e g An 01 Step to the requested output by pushing MENU Push ENTR to reach the setting of the MIN value The display shows Set L Push ENTR to set the MIN value of the output The display shows the numerical value in e g the standard setting 0 0 or previously set value Push MENU to increase the MIN value Push ESC to decrease the MIN value Push ENTR The display shows Sure Push ENTR to save the setting and return to Set L Push MENU or ESC to return to Set L without saving the new setting Push MENU to reach the setting of the MAX value The display shows Set H Push ENTR to set the MAX value of the output The display shows the numerical value in e g the standard setting 100 0 or previously set value Push MENU to increase the MAX value Push ESC to decrease the MAX Document Rev Page UMA 132 3 11 16 HeSENSEA ir value Push ENTR The display shows Sure Push ENTR to save the setting and return to Set H Push MENU or ESC to return to Set H without saving the new setting Push2. jumper Current Connection in position Current provides 0 4 20mA output range for Out 1 Out 1 Voltage Connection in position Voltage provides 0 2 10VDC output range for Out 1 Current Connection in position Current provides 0 4 20mA output range for Out 2 Out 2 Voltage Connection in position Voltage provides 0 2 10VDC output range for Out 2 Voltage Connection in position Voltage provides 0 10VDC for Out 4 Out 4 Open Connection in position Open collector provides an open collector output collector Max 0 5A 55VDC 40VAC half wave rectifier Table Il Configuration jumpers for aSENSE milll Option Network Adapter for Connection to RS 485 Network The network adapter can be used to connect the SenseAir sensor to a RS 485 network The adapter is a small printed circuit board which can be used with all sensors with the housings large enough The green LED flashes every time the adapter answers calls from the network master RS485 Q Sh B RS485 GND UART oe The adapter should be mounted perpendicular to the main PCB The adapter should be put on the UART connector with all five pins connected All five pins of the UART must be connected For aSENSE the adapter should be mounted with the RS 485 terminal facing the other terminals and the LED facing the display Document Rev UMA 132 3 Page 5 16 HeSENSEA ir Push Button Operation for aSENS
3. Set H Push MENU or ESC to return to Set H without saving the new setting Push ESC to return to the output to be set item 12 Push ESC once again to return to the setting of analogue outputs item 11 Document Rev Page UMA 132 3 9 16 CO amp CO alternating MENU MENU i Do not e HeSENSEA ir Display modes Maintenance Function LCD contents Junctions menu executed with LCD texis DEFAULT 9 ENTR MENU ENTR Error code L SAVE MENU ESC ESC ENTR ENTR ENTR Increase output Access code to i number 1 pH MENU the service menu ical ade Decrease S MAK i Increase Default code 255 L value 4 MAX 11111111 o value Figure 10 Maintenance functions available on aSENSE milll to set output limits Only flow chart for setting High limits is shown but Low limits are set in the very same way The numbers in the flow chart refers to the points in example 1 Function blocks that are time limited are indicated by blue boarders Time limit refers to an internal time out that returns the LCD and maintenance function back to normal ENTER is a simultaneous pressing on MENU and ESC EXAMPLE II Setting of set points for carbon monoxide concentration and carbon dioxide concentration the MAX and MIN values of the analogue outputs and calibration of the sensor The access code and the recalibration o
4. E mill This sensor has two push buttons MENU and ESC The YELLOW LED will acknowledge a successful push by a short flash The push button MENU is available for selection of display value or maintenance commands whereas ESC is available to escape back from a selected level S SSHKOHH oO QVDYVNWVYN PV VOY i ale EJB g Bo oe Emm TXI oO TxD o Oo Figure 6 The sensor with push buttons Figure 7 The push button MENU is pushed OQOHHGCHVHVOON S SHKKKHH i 5 oTe Lee 8 mm PEIEE Tan v o lt eo0000 Figure 8 The push button ESC is pushed Figure 9 The ENTER command is done by pushing buttons MENU and ESC at the same time for about 14 seconds Display modes In DISPLAY MODE the DEFAULT operation is that the sensor alternates between carbon dioxide and carbon monoxide readings presentation The push button MENU is used to select the indicated value on the display to be the error code or Document Rev Page UMA 132 3 6 16 HeSENSEA ir the set points of temperature and COz After power up the display will always return to the Default display mode If a permanent change of default values is requested the PC software is to be used Function Display Time Function description Line limit 0 CO CO2 no DEFAULT Norma
5. ESC to return to the output to be set item 12 Push ESC once again to return to the setting of analogue outputs item 11 17 Push MENU to reach the calibration with fresh air The sensor needs fresh air air with 400 ppm carbon dioxide The display shows CALb Push ENTR The display shows Sure Push ENTR to confirm that a background calibration should be done After completed background calibration the sensor returns to DEFAULT If a background calibration should not be executed push MENU or ESC The background calibration has a time limit 18 Push MENU to reach the zero point calibration The sensor needs carbon dioxide free air or gas The display shows CAL Push ENTR The display shows Sure Push ENTR to confirm that a zero point calibration should be done After completed zero point calibration the sensor returns to DEFAULT If a zero point calibration should not be executed push MENU or ESC The zero point calibration has a time limit FUNCTIONAL TEST of CO2 CO sensor aSENSE milll Functional test The unit has three LED s green yellow and red These LED s indicate the status of the controller An internal delay function prevents the alarm functions of the relay and OUT4 output during two minutes after power up The alarm outputs may be tested after the two minutes delay Green LED No alarm situation is lit when the relay is contact closed Yellow LED Call for maintenan
6. and ESC are pushed simultaneously 1 At the start of the setting the sensor is in DEFAULT 2 Push MENU once to reach the error code The display shows E the error code number No error is shown as E000 3 Push MENU once The display shows the CO set point e g 35 4 Push ENTR once The display shows EC and two digits Enter the access code to the service menu If the default code is used do like this Push MENU until the digits stop The display shows EC55 If the correct code is not entered before the time limit exceeds the sensor returns to DEFAULT 5 Push ENTR once The display shows SPCO to set the CO set point 6 Push MENU once to reach the carbon dioxide set point The display shows SP C 7 Push MENU once to reach the setting of analogue outputs The display shows AOUt 8 Push ENTR to reach the output to be set The display shows An and two digits e g An 01 Step to the requested output by pushing MENU 9 Push ENTR to reach the setting of the MIN value The display shows Set L 10 Push MENU to reach the setting of the MAX value The display shows Set H 11 Push ENTR to set the MAX value of the output The display shows the numerical value in e g the standard setting100 0 or previously set value Push MENU to increase the MAX value Push ESC to decrease the MAX value Push ENTR The display shows Sure Push ENTR to save the setting and return to
7. can be checked with a multimeter The adjustment is saved by pressing Entr Press ESC to return Ree sure ng without saving Background calibration of the CO sensor and the CO sensor with fresh air An easy way to correct the zero point error The 7 CALb yes sensor needs fresh air 380 420 ppm CO The calibration must be confirmed by pressing Entr The CO sensor is calibrated to 400 ppm COz and the CO sensor to 0 ppm CO 7a Sure yes Confirm that a background calibration shall be done Zero point calibration of the CO sensor and the CO sensor The 8 CAL yes sensor needs zero gas See the zero point calibration instruction The calibration must be confirmed by pressing Entr 8a Sure yes Confirm that a zero point calibration shall be done Table IV Maintenance functions available on aSENSE mill to set output limits Time limit refers to an internal time out that returns the LCD and maintenance function back to normal ENTER is a simultaneous pressing on MENU and ESC PLEASE NOTE If a power failure happens when the sensor has Out 1 4 locked to min max limits then the sensor will have this output locked when the power returns It is necessary to enter this menu item and release the output manually Document Rev Page UMA 132 3 8 16 HeSENSEA ir EXAMPLE I Setting of the MAX value of the analogue outputs The access code is time limited If the time limit is exceeded the sensor returns to DEFAULT ENTR MENU
8. ce is lit if an error flag is set or the measurement is out of range This information is also shown on the display by the wrench icon Any push button press or executed maintenance function is acknowledged by emission from this LED If an error has been detected both the yellow and red LEDs are lit Red LED Alarm high gas concentrations is lit when the open collector output is activated contact closed The CO concentration is 35 ppm or more OR the CO2 concentration is 1500 ppm or more OR if the yellow LED is lit A simple and visual functional test can easily be performed Take a breath and blow the air from a distance of a few centimetres on the sensor The sensor will detect a rapid increase in the carbon dioxide concentration The red LED is lit and the green LED is turned off when the CO or CO concentration goes above the pre set value If the sensor is connected to a controller the flow of the ventilation system will eventually increase by change of the fan speed or opening of a damper actuator depending on the installation application Document Rev Page UMA 132 3 12 16 HeSENSEA ir Test gas verification If the measurement of a sensor is to be verified a test gas with carefully determined concentration of CO and COz must be used For zero calibration pure nitrogen or air that has passed through a chemical absorber should be used In fresh air the carbon monoxide concentration is nearly zero The Zero calibration ki
9. curacy is defined at continuous operation at least 3 weeks after installation Self diagnostics The system contains complete self diagnostic procedures A full system test is executed automatically every time the power is turned on For aSENSE mll the internal voltage regulators and outputs are checked In addition constantly during operation checking the valid dynamic measurement ranges checks the sensor probes against failure These different system checks return error bytes to the system RAM If any error is detected the yellow LED will be lit until the error has vanished and the error flag is reset Warm up and Out of Range are the only bits that are reset automatically after return to normal state All other error bits have to be reset manually after return to normal state either by pushing MENU amp ESC buttons simultaneously for Entr or by power off and restart By pushing the push button MENU the error code number Exxx is shown on the LCD Descriptions of the different codes are listed below Error code and action plan Bit sail Error description Suggested action Fatal Error 0 N A Yellow LED continuously flashes Try to rasinn Sensor by power OFF ON Contact local distributor Push buttons are not operating 1 2 Reserved Try to restart sensor by power OFF ON 2 4 ee aan Check detailed settings and configuration configuration 9 with UIP software version 4 3 and hi
10. f the sensor are time limited If the time limit is exceeded the sensor returns to DEFAULT ENTR MENU and ESC are pushed simultaneously 1 2 At the start of the setting the sensor is in DEFAULT Push MENU once to reach the error code The display shows E the error code number No error is shown as E000 Push ESC to return to DEFAULT if requested Push MENU once The display shows the CO set point e g 35 ppm and the carbon dioxide set point e g 750ppm Document Rev Page UMA 132 3 10 16 HeSENSEA ir Push ESC to return to DEFAULT if requested Push ENTR once The display shows EC and two digits Enter the access code to the service menu If the default code is used do like this Push MENU until the digits stop The display shows EC55 If the correct code is not entered before the time limit exceeds the sensor returns to DEFAULT Push ENTR once The display shows SPCO to set the carbon monoxide set point Push ENTR once The display shows the carbon monoxide set point e g ex 35 ppm Push MENU to increase the set point value in steps of 1 ppm Push ESC to decrease the set point value in steps of 1 ppm Push ENTR once when the set point is set The display shows SPCO Push ESC to return to DEFAULT Push MENU once to reach the carbon dioxide set point The display shows SP C Push ENTR once The display shows the carbon dioxide set point e g 750 ppm Push MENU
11. gher g Contact local distributor Output Error Check connections and loads of outputs 3 8 Detected errors during output signals Check detailed status of outputs with UIP calculation and generation software version 4 3 and higher Self Diagnostic Error Check detailed self diagnostic status with 4 16 May indicate the need of zero UIP software version 4 3 and higher calibration or sensor replacement Contact local distributor Out of Range Emor Try sensor in fresh air Accompanies most of other errors sate Check connections of temperature and Can also indicate overload or failures lative humidi b 5 32 of sensors and inputs reative MUON probe Check detailed status of measurements Resets Automaticaily after source ot with UIP software version 4 3 and higher y See Note 1 error disappearance Memory Error Check detailed settings and configuration 6 64 Non fatal error during memory with UIP software version 4 3 and higher operations Warm Up state If it doesn t disappear in half a minute 7 128 Is always set after power up or power i check power stability failure Resets after restart sequence Table V Error codes Document Rev UMA 132 3 Page 14 16 HeESENSEA ir Note 1 Any probe is out of range Occurs for instance during over exposure of CO sensor in which case the error code will automatically reset when the measurement values return to normal Could also indicate the need of zero point calibration A back
12. ground calibration using push button function bCAL will cure this error a more exact zero calibration using CAL may be performed later if required If the COz readings are normal and still the error code remains the temperature or relative humidity sensor can be defect or the connections to these are broken Please remark If several errors are detected at the same time the different error code numbers will be added together into one single error code Maintenance The aSENSE mlll is basically maintenance free An internal self adjusting calibration function takes care of normal long term drift associated to the CO and CO sensor To secure the highest accuracy a time interval of five years is recommended between calibrations unless some special situations have occurred A zero calibration can be performed by use of the push button functions or for a complete overview by use of a PC together with the U P software version 4 3 or higher This software can be free downloaded from www senseair com A RS232 cable is needed and can be ordered from SenseAir The cable is to be connected to the UART port slide connector Fig 10 For change of control parameters and re calibration CO2 and CQ this PC tool has to be used The check can be done on site without interfering with the ventilation system N Relay 5 6 7 8 5 O 4 DI Start Communi point cation protocol Out 1 Out 2 Out 4 Figure 12 The aSENSE mi
13. in Se SENSEA User Manual aSENSE milll CO2 CO sensor with built in general purpose controller General The IAQ sensor product aSENSE mill is used to measure indoor air carbon dioxide and carbon monoxide concentrations It is a very flexible controller with programmable outputs for both relay and linear control of e g mixed air dampers humidifier and fans The measured values are shown on the display The unit can alternatively be connected to common VAV Variable Air Volume controllers or Direct Digital Control DDC The linear output functions are pre programmed All functions can be modified from a PC with the software UIP version 4 3 or higher and the RS232 communication cable Figure 1 aSENSE mlll for wall mounting and ventilation duct mounting Document Rev Page UMA 132 3 1 16 HeSENSEA ir FUNCTIONAL DESCRIPTION aSENSE milll is delivered pre programmed see description below With the free software U P4 3 or later versions and SenseAir s standard communication cable for PC A232 Cable the user can adjust the product to his hers application by for example changing the measurement ranges of the linear outputs modify the set points of the alarm outputs invert outputs and also reconfigure the functions and the logic that controls the outputs Wi aSense mill File Sensor Tools Options View Window Help OUT1 CO Gas alarm relay EE CO Alarm SPt 4 A View Options Structure View Options Structu
14. l operation 1 EXXX ei Error code If no error has been detected the code E0 is shown The y error code is reset with Entr Present Go Toggle between display of temperature and CO set point with 2 and COs no MENU set points Table III On the display without entering the maintenance menu Maintenance level A number of execution options are available from the MAINTENANCE MENU see Table IV This level is accessed only from the display mode in the set points of CO and CO selection A two buttons push and an access code restrict access intended for competent trained service personnel only The Entr command is done by PUSHING MENU AND ESC AT THE SAME TIME hold down for about 14 seconds The access code has eight binary digits one press at MENU equals 1 and one press at ESC equals 0 The code value can be changed for your personal choice from the software UIP 4 3 Always use the ESC button to return to the DEFAULT mode Several pushes of the ESC button may be needed to return to the DEFAULT mode The Entr push MENU amp ESC eventually leads to execution of functions which causes temporary or permanently change of any parameter that affects the system outputs Function Display Time Function description Line limit Access code to the service menu The default value of the code is 255 11111111 that is eight presses on MENU Press down MENU and let it scroll until it stops The last t
15. lid shows the configuration of the outputs at the time of product delivery The sensors controllers are supplied from the factory unless otherwise ordered with 0 10VDC linear outputs for Out 1 and Out 2 Out 4 is an open collector output see Table IN If different output configurations are needed for the application these have to be reconfigured before the unit is powered up Default values are 0 10 V TXD DI Start Communi point cation Alarm test protocol Jumper for Jumper to DI1 Switch configuring the choose for alarm linear output communication test start point to 0 protocol or 20 start point o o e o o Oo 8S 388688 Out 1 Out 2 Out 4 Jumpers to choose between voltage or current outputs Jumper to choose between open collector or 0 10V linear signal Figure 5 The connection terminal area of the aSENSE mlll with jumpers and terminals The terminal DI1 may be used for forced ventilation If the sensor has a heater it is connected to and Le Document UMA 132 Rev Page 3 4 16 eSENSEA ir Jumper Position Function 0 Jumper top position provides OVdc or OmA start point for Out 1 Out 2 Start point 0 20mA or 0 10V selection jumper 20 Jumper bottom position provides 2Vdc or 4mA start point for Out 1 Out 2 4 20mA or 2 10V Communi MB Modbus communication protocol cation selection SA SenseAir communication protocol
16. lll printed circuit board with the connection terminal area is enlarged The Alarm test terminal DI1 may be used for forced ventilation If the sensor has a heater it is connected to and Document Rev Page UMA 132 3 15 16 HeSENSEA ir This product is in accordance with the EMC 2004 108 EC 92 31 EEG including amendments by the CE marking Directive 93 68 EEC The product fulfils the following demands EN 61000 4 2 level 2 EN 61000 4 3 level 2 EN 61000 4 4 level 4 EN 61000 4 6 EN 61000 4 8 level 4 EN 55022 class B Contact SenseAir AB Europe Box 96 Stationsgatan 12 SE 82060 Delsbo Sweden Phone 46 0 653 71 77 70 E mail info senseair com Web site senseair com SenseAir North America 29030 SW Town Center Loop East Suite 202 169 Wilsonville OR 97070 USA Phone 1 520 349 7686 E mail infoamerica senseair com Web site senseair com C SenseAir Asia SenseAir Chengdu Gas Sensors Ltd First floor of 8th of Xingke South Road Jiniu High Tech Industrial Park 610036 Chengdu China Phone 86 028 875 928 85 E mail info senseair asia Web site senseair asia Document Rev Page UMA 132 3 16 16
17. ration gt 35 ppm OR carbon dioxide concentration gt 1500 ppm There is a two minutes delay after start up Relay output ON OFF Out 3 relay closed open 1400 1500 ppm CO 30 35 ppm CO Figure 4 The control signal of air quality in Terminal Standard Standard settings Standard function figure 4 configuration 1 os Power 24 VAC DC 2W without output load 20 3W The same ground reference has to be used for the aSENSE milll unit Power ground 24 VAC DC and for the control system 2 L 3 Out 1 0 10VDC 0 100 ppm CO Measuring signal carbon monoxide 4 Out 2 0 10VDC 0 2000 ppm CO Measuring signal carbon dioxide 5 Unmarked Signal Ground Connected to GO via PTC fuse 6 Relay Air control Delay two minutes after start 7 Closed lt 30 ppm CO lt 1400 ppm CO2 The green LED is lit Open gt 35 ppm CO gt 1500 ppm CO The relay is open in alarm situations and at power loss The red LED is lit and the green is not lit 8 Out 4 Open No error detected Error status Delay two minutes after Open AND normal gas start collector concentrations Closed Error detected OR The red LED is lit if an error OR high high gas gas concentrations are detected If concentrations an error is detected also the yellow LED is lit Document Rev Page UMA 132 3 3 16 Table Default configuration of aSENSE milll Output Configurations HeSENSEA ir A label on the inner side of the sensor
18. re 1500 ppm OUT4 Sum alarm Figure 2 Print screen of UIP4 3 PC work space of aSENSE mill where the pre set functions can easily be redefined The four outputs far right are here arranged in rows together with the function blocks that control the output Internal CO and CO recorder samples sea Be ii data continuously every 20 minutes After 13 days and 8 hours the storage wo 1 memory is full and the oldest data are m w eventually overwritten one by one The u data storage is secured every four hours Incase of power failure the sampled data of the latest four hours at most will be lost The other values can be studied with the software UIP4 3 and exported to a text file for further treatment in e g MS EXCEL ee 8 EL SS 588g EEBEEEEREEEEERSEEEEEEREEEEEEEEERJEEEES Figure 3 Recorded readings Document Rev Page UMA 132 3 2 16 HeSENSEA ir Standard configuration Out 1 is carbon monoxide output Out 2 is carbon dioxide output and Out 3 is relay output Out 4 is error status OR Out 3 is open Out 1 measuring signal for carbon monoxide concentration Out 2 measuring signal for carbon dioxide concentration Out 3 ON OFF of demand of air quality The relay is open in alarm situations and at power loss NOTE There is a two minutes delay after start up Out 4 error status OR Out 3 open carbon monoxide concent
19. t can be used to produce carbon dioxide free air Check the CO and CO values of the display or the voltage of the output 1 for CO and the voltage of the output 2 for CO2 with a multimeter when the values have stabilized When a zero calibration shall be executed a plastic tube with 2 2 mm outer diameter and 0 8 mm inner diameter shall be inserted in marked holes of the sensor Plastic tubing is connected to the tube The gas flow should be between 0 3 and 1 0 l min The yellow LED flashes when a calibration is executed A calibration will only be executed if the gas concentration is stable If the yellow LED does not flash after 8 seconds no calibration has been executed Then try to do another calibration Marking Function CALb CO2 Background calibration CO sensor calibration with fresh air An easy way to correct the zero point error The sensor needs fresh air 380 420 ppm CO The COz sensor is calibrated to 400 ppm COs CAL CO Zero point calibration of the CO sensor with fresh air The CO sensor is calibrated to 0 ppm CO Gas inlet CO2 B e CALb CO2 Figure 11 The PCB with the calibration jumper in default position An enlarged part of the PCB with marked gas inlets and jumper positions for calibration is shown at right Document Rev Page UMA 132 3 13 16 HeSENSEA ir PLEASE NOTE The sensor ac
20. wo digits of the code are shown Then ENTER to accept the selected code 4a SPCO yes For setting the set point of the CO concentration For increase decrease of the CO set point The set point is 3 ECxx yes 4b oe yes increased by stepping with MENU button Decreasing is done by p stepping with the ESC button 5a SPc yes For setting the set point of the CO concentration For increase decrease of the CO concentration set point The 5b The present 2 CO set point yes set point is increased by stepping with MENU button Decreasing 4 is done by stepping with the ESC button 6a AOUt yes First step of adjusting the analogue outputs MAX and MIN values 6b An xx no Select analogue output by stepping with MENU button 6c1 SetL no Leads to adjustment of the MIN value Document Rev Page UMA 132 3 7 16 The present HeESENSEA ir Increase the MIN value by stepping with the MENU button 6d1 MIN value in no Decrease by stepping with the ESC button The output is set to of FS the MIN value and can be checked with a multimeter The adjustment is saved by pressing Entr Press ESC to return ei Sue ia without saving 6c2 SetH no Leads to adjustment of the MAX value The present Increase MAX value by stepping with the MENU button Decrease 6d2 MAX value in no by stepping with the ESC button The output is set to the MAX of FS value and
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