SAUTER flexotron®800 Ventilation application User Guide
Contents
1. ARROW Down Down button Move down a row in the menu Decrease parameter value ARROW Right Right button Move to a lower menu level Move the cursor to the right in the parameter ARROW Left Left button Move to a higher menu level Move the cursor to the left in the parameter OK Open Activate a selected menu setting Confirm a parameter value O C q OP SAUTER ALARM Press to view the alarm list CLEAR Reset Abort a parameter change unless OK has already been pressed ALARM LED Red flashing light when there is an unacknowledged alarm Non flashing light when there is an acknowledged alarm which has not been reset WRITE LED some menus contain settable values This is indicated by the yellow LED flashing The value can be changed by pressing OK SAUTER flexotron 800 Ventilation application DZSAUTER The menu system 4 The menu system 4 1 Navigating the menus P100012091 The choice of access level user access determines which menus are shown The start display the display normally shown is at the basic level ofthe menu tree The appearance of the start display may vary since there are 5 types to choose from during configuration The text in the first row can also be changed via CASE flexotron Sp and Act are Setpoint and Actual value for the supply air controller This also applies when using cascaded room temperature or extract air temperature c2. P100012091 20 SAUTER flexotron 800 Ventilation application YSAUTER The menu system 4 6 4 Timer Reduced speed These settings will be ignored if single speed fans are configured Should periods for normal speed and periods for reduced speed overlap normal speed takes precedence There are 8 separate setting menus one for each weekday and one extra for holidays Holiday schedules take precedence over other schedules For 24 hour running set a period to 00 00 24 00 To disable a period set it to 00 00 00 00 If both periods of a day are set to 00 00 00 00 the unit will not run at Reduced speed that day 4 6 5 Extended running Digital inputs can be used to force the unit to start although the timer says the running mode should be Off For 2 speed fans and pressure flow controlled fans inputs for normal speed and reduced speed can normally be used The unit will run for the set time If the running time is set to O the unit will only run as long as the digital input is closed 4 6 6 Timer outputs 1 5 Up to 5 digital outputs can be used as timer controlled outputs Only outputs which have been configured will be shown Each with individual week schedules with two activation periods per day Each timer output has 8 separate setting menus one for each weekday and one extra for holidays Holiday schedules take precedence over other schedules If the function Recirculation has been configured
3. choice is displayed The text can be used to show information concerning the commissioning company name and phone number to service personnel etc The easiest way to enter text is to use CASE flexotron but the buttons can also be used Up to 4 lines of 20 characters can be entered 5 3 Revision numbers If RIGHT is pressed twice when the start menu is shown a menu showing the program revision number and ID number is displayed 5 4 Language P100012091 If RIGHT is pressed three times when the start menu is shown a menu is displayed in which the language can be changed The different language files are stored in the application memory and are downloaded to the work memory If a flexotron 800 controller via CASE flexotron has been reloaded with a newer program revision than the factory revision the 23 SAUTER flexotron 800 Ventilation application Ss AUTER Other functions controller will not allow language files to be downloaded from the application memory This is because there is a risk that the language files are not compatible with the new revision Therefore you are limited to the two languages you have downloaded using CASE flexotron 5 5 Indication LEDs Status indication can be found in the upper left corner of the controller For controllers with display the alarm indication and change mode LEDs are located in the keypad area 5 5 1 Status indication Tm Green Port1 Transmitting Px Green Port 1 Recei
4. digital inputs DI Reference potential for analogue inputs Al DI1 External OFF switch Outside temperature sensor DI2 Frost protection facility Al2 Sensor for supply air temperature DI3 Supply air fan on 17 Reference potential for analogue outputs AO AO1 Actuator for heater Y1 Tas P100012091 21 SAUTER flexotron 800 Ventilation application XSAUTER Other functions 5 8 2 RDT815 Supply air constant control Structure of installation e Energy recovery using plate heat exchanger e 2 speed fans e Heating coil with pump regulating valve frost monitor return sensor e Air cooler with regulating valve e Supply air sensor e Outside sensor e Air filter Closed loop control functions e Temperature control for constant supply air Open loop control functions e Start up circuit e Frost monitor for heater e Motor air flow monitor e Icing monitor for heat exchanger e Anti jamming function for pump e Collective alarm e Standstill control SL SE NI me 0 el x xo P100012091 Brief description The outside air and exhaust air dampers along with the HRec bypass valve are closed when the plant is switched off The plant can be switched on or off in automatic mode using a time programme or free outside air cooling If a fault is indicated for motor air flow sensor or frost protection facility the unit is shut down A collective alarm can be indicated externally The monit
5. running mode is Off timer control OFF and nat in extended running and if conditions call for support control Minimum run time is settable O to 720 minutes FS 20 minutes P100012091 14 SAUTER flexotron 800 Ventilation application YSAUTER The menu system 4 3 6 Frost protection temperature Relevant value for the water temperature at the frost protection sensor 4 3 7 Exchanger de icing This menu is shown if exchanger de icing has been configured If the temperature at the de icing sensor drops below the setpoint value the de icing function is started It is stopped when the temperature has risen above the setpoint plus the set differential 4 3 8 Heat exchanger efficiency monitoring The function calculates the heat exchanger temperature efficiency in when the output signal to the exchanger is higher than 5 and the outdoor temperature is lower than 10 C The function requires an extract air sensor an exhaust air sensor and an outdoor sensor When the control signal is lower than 5 or the outdoor temperature is higher than 10 C the display will show 0 4 3 9 Recirculation Recirculation is a function for distributing the air in the room using the supply air fan The function can be used even when there is no heating or cooling demand When using recirculation control the extract air fan stops and a recirculation damper opens which allows the air to circulate through the unit During recirc
6. without changes or can be used as a starting point for individual customisations RDT808 Supply air constant control Structure of installation e Outside and exhaust air dampers e Air filter e 1 speed fan e Heating coil with pump regulating valve frost monitor e Supply air sensor e Outside sensor Closed loop control functions e Temperature control for constant supply air Open loop control functions e Start up circuit e Frost monitor for heater e Min max limit for inlet temperature e Motor air flow monitor e Pump anti jamming function e Standstill control M en f 7 y 2 A He Alt Al2 DH DI2 P100012091 Brief description The outside air and exhaust air dampers are closed when the plant is switched off Operation of the plant is enabled using a switch and the plant is run in automatic mode using the time programme If a fault is indicated in the air flow or supply air sensor the plant is switched off If the unit is operating fault free the temperature control system adjusts the setpoint to the one entered in the display using the heating coil The start up circuit reduces the risk of faults due to frost when outside temperatures are very low 26 SAUTER flexotron 800 Ventilation application Ss AUTER Other functions Terminal assignment Supply voltage 24 V AC or 24 V DC 15 50 60 Hz RS485 Modbus not with web TCP IP models 24 V DC Reference point for
7. 0 AO3 21 AO4 22 AO5 Reference potential for universal inputs 5 kE Notused o Ul4 Not used P100012091 33 SAUTER flexotron 800 Ventilation application SAUTER Other functions 9 8 5 FO lt RDT828 Cascade control with humidity control Structure of installation e Outside recirculation and exhaust air dampers e Arr filter e 2 speed fan e Heating coil with pump regulating valve frost monitor motor monitor return sensor e Air cooler with regulating valve e Humidification with pump and regulating valve e Return air outside and return air sensors e Humidity sensor in the return air and supply air Closed loop control functions e Temperature control with return air supply air cascade e Humidity control Open loop control functions e Start up circuit e Fire shut down e Filter monitoring e Free outside air cooling e Frost monitor e Sensor monitoring e Min max limit for supply air temperature e Motor air flow monitor e Anti jamming facility for pump e Collective alarm e Standstill control e External heat and cooling demand _DI6 DIS DI DIS TE P100012091 DO1 DO2 DO3 Brief description The outside air and exhaust air dampers along with the HRec bypass valve are closed when the plant is switched off The plant can be switched on or off by a time programme in automatic mode by the free outside air cooling or the cooling down protection functi
8. F switch 36 DOG Heatdemand 0000000 DIS Heating coil pump on Reference potential for analogue inputs Al 11406 Filter monitor Outside temperature ag ee air temperature 16 DI8 Return air fan E Reference Reference potential for analogue inputs Al for analogue inputs Al Frost protection sensor ae potential for analogue Return air temperature Y1 actuator for heater Y2 actuator for HRec Reference potential for universal inputs Ul 20 Y3 actuator for cooler Room humidit Setpoint for room temperature AOS 25 Reference potential for universal inputs Ul Supply air humidit Ul4 Not used P100012091 39 SAUTER flexotron 800 Ventilation application Index Index A Access rights 23 Air control 18 Alarm events 13 Alarms Alarm handling 24 B Buttons and LEDs 9 C Changing the battery 25 D Date Time 21 Demand control Setpoint 20 Display 8 E Enthalpy control 17 Extended running 22 F Fans Timer output Y speed 22 Timer output 1 1 speed 21 Functions overview 6 H Holidays 22 Humidity control 20 Setpoint 20 Indicators 25 Information screen 24 Inputs Outputs 13 P100012091 SAUTER L Language change 24 LEDs 25 Log off 23 Logon 23 M Menus 10 N Navigating the menus 10 O Other functions 24 P Password 23 R Revision number 24 Running mode 11 12 Running mode unit 12 S Selected functions 12 Setpoint fan control 18 Setpoint humidity control 20
9. Pretreatment Damper and pump control for preheating or precooling of the outdoor air via an underground intake channel Cooling recovery If the extract air is colder than the outdoor air and cooling is required the heat exchanger control is reversed in order to return the cool extract air Recirculation control Recirculation of air using a supply air fan and recirculation damper with or without temperature control Step controllers Heating Cooling As an alternative to the analogue control of Actuator heating Y1 or Actuator cooling Y3 step controllers can be used for controlling heating or cooling in steps using digital control SAUTER flexotron 800 Ventilation application YSAUTER Display buttons and LEDs 3 Display buttons and LEDs This section is applicable to flexotron 800 units with display and buttons but also to the hand terminal RDB800 which can be connected to flexotron 800 units without display and buttons SAUTER LLL RDB800F001 3 1 Display The display has 4 rows of 20 characters lt has background illumination The illumination is normally off but is activated as soon as a button is pressed The illumination will be turned off again after a period of inactivity P100012091 SAUTER flexotron 800 Ventilation application Display buttons and LEDs 3 2 Buttons and LEDs 5 Aa Y dd P100012091 ARROW Up Up button Move up a row in the menu Increase parameter value
10. SAUTER SAUTER flexotron 800 Ventilation application User Guide P100012091 111102 SAUTER flexotron 800 Ventilation application XSAUTER P100012091 2 SAUTER flexotron 800 Ventilation application Ws AUTER Table of content Table of content Table Ob Content a Eee lesen 2 1 ABOUEIhIS USEr QuUide 22 22 4 2 SADOULHEXOLONPBEND nen een 5 2 1 Ventilation application overview Of functions ccccooccnccconcnnccnoconcnnnnennnnoncnnnonannncnnnnrnnonnnrnncnnanennnnonens 5 3 Display buttons and LEEDS een ee 7 3 1 BS AAA A O 7 3 2 Butons a a LEDS SAH Hei 8 A gt EHE MENU SYSIEM a ee ee A A oa 9 4 1 Navigating ins MENUS coma E 9 4 2 PUANINI MOC PPP Om E a ae en uence caarea eee es 10 4 3 lemperallfenensese ee ii ren 12 4 4 PAG OPO re een nnadieenen 17 4 5 RUMIY CONVO uste od 19 4 6 SS A es ee een 20 4 7 ACCESS VICI Sa DR ee ee 22 5 OINERTUNCHONS O O O no ea as aaa Eee aa ehe a NE sense 23 5 1 Alarm Hana Nee een 23 52 Froe TEX a ne TE LETTER 23 5 3 REVISION UMD Scioli 23 5 4 E A O A ccs se 23 5 5 o O 24 5 6 changing Ne DANY uns dci sico 24 5 7 arb ASS IS a alicia 25 5 8 Basic configuration tor Venta lisina ano 26 MAA A A id 36 P100012091 3 SAUTER flexotron 800 Ventilation application XSAUTER About this user guide 1 About this user guide This user guide covers all the models in the flexotron 800 series used with the ventilation application The document only covers functions which are avai
11. Setpoints temperature 14 y Temperature 14 Time settings 21 Time Date 21 Timer output speed 22 Timer output 1 1 speed 21 Timer outputs 22 36 SAUTER flexotron 800 Ventilation application Ss AUTER Printed in Switzerland Anderungen vorbehalten Fr Sauter AG CH 4016 Basel P100012091 3
12. Timer output 5 can be used for controlling start stop of the Recirculation function 4 6 7 Holidays Up to 24 separate holiday periods for a full year can be set A holiday period can be any number of consecutive days from one and upwards The dates are in the format MM DD When the current date falls within a holiday period the scheduler will use the settings for the weekday Holiday P100012091 21 SAUTER flexotron 800 Ventilation application XSAUTER The menu system 4 7 Access rights There are four different access levels Normal level which has the lowest access and does not require logging on Operator level Service level and Admin level which has the highest access The choice of access level determines which menus are shown as well as which parameters can be changed in the displayed menus The basic level only permits changes in Running mode and gives read only access to a limited number of menus Operator level gives access to all menus except Configuration Service level gives access to all menus except the submenus Configuration In and Outputs and Configuration System Admin level gives full read write access to all settings and parameters in all menus Repeatedly press down arrow when the start up display is shown until the arrow marker to the left of the text list points to Access rights Press RIGHT 4 7 1 Log on In this menu it is possible to log on to any access level by entering the appro
13. alarm list The list shows type of alarm date and time for the alarm and the alarm class A B or C alarm To access the alarm list press the alarm button the front panel button with the red button top If there are multiple alarms this is indicated by up down arrow symbols at the right hand edge of the display Use the UP and DOWN buttons to access the other alarms At the left end of the bottom display line the alarm status is shown For active unacknowledged alarms the space is blank For alarms that have reset the text Acknowledged still active or blocked alarms are indicated by Acknowledged or Blocked Alarms are acknowledged by pressing the OK button You are then given the choice of acknowledging the alarm or blocking the alarm Acknowledged alarms will remain on the alarm list until the alarm input signal resets Blocked alarms remain on the alarm list until the alarm has reset and the block has been removed New alarms of the same type will not be activated as long as the block remains Since blocking alarms can be potentially hazardous you need a high log on authority to block alarms Class A and B alarms will activate alarm output s if these have been configured Class C alarms do not activate the alarm output s Class C alarms are removed from the alarm list when the alarm input resets even if the alarm has not been acknowledged If RIGHT is pressed once when the start menu is shown a menu showing text of your
14. alue control for supply air o 815 cascade control Cascade control for return air Supply air o 828 cascade amp CO2 Cascade control for return air supply air including control of the CO content using VFD o 828 cascade amp humidity Cascade control for return air supply air with additional humidity control The number at the start of the selection corresponds to the numbers in the item number of the device Q Selecting an application unsuitable for the device can result in the operating statuses of the inputs and outputs remaining undefined Select the application using the OK button The cursor jumps to Accept changes No Then press the Up or Down button until the display changes to Yes Press OK to confirm The program loads and the default display appears The controller switches to normal operation This procedure will not be repeated the next time the application is launched 3 Select the language To do so press the Right button in the default display three times Then press the OK button and use the Up or Down button to select the preferred language Confirm the selection using the OK button P100012091 25 SAUTER flexotron 800 Ventilation application SAUTER Other functions 9 8 9 8 1 amp 2 77 x o Basic configuration for ventilation In the start assistant see previous section each type of device features a choice of one or two configurations These configurations can be applied
15. are calculated by extending the line between the two last breakpoints at either end Example At the lower end the setpoint is increasing by 1 C for every 5 C lowering of the outdoor temperature So the setpoint at 23 C would be 25 C 6x 1 0 C 25 6 C P100012091 13 SAUTER flexotron 800 Ventilation application YSAUTER The menu system 4 3 3 Setpoint Cascaded Room temperature contro Setpoint Cascaded room temperature control In control mode Supply air control Room control the setpoint is used when cascade connected room control is active Submenu for setting the min and max limitation temperatures for the supply air If two room sensors have been configured you will also get this menu The controller uses the average temperature of the two sensors 4 3 4 Setpoint Cascaded extract air temperature contro Setpoint Cascaded extract air temperature control In control mode Supply air control Extract air control the setpoint is used when cascaded extract air control is active Submenu for setting the min and max limitation temperatures for the supply air 4 3 5 Support control heating Support control cooling Support control is normally used when room temperature control or extract air control has been configured to prevent a too large offset in temperature when the unit is Off Support control Heating or Support control Cooling will run if support control is configured the
16. cts the heating coil in areas not protected from frost P100012091 30 SAUTER flexotron 800 Ventilation application Ss AUTER Other functions Terminal assignment 1 D iis Supply voltage 24 V AC or 24 V DC mm 15 50 60 Hz E Eon aa 24 V DC Reference point for digital inputs DI RS485 Modbus not with 2 web TCP IP models Heating coil pump 9 DI External OFF switch Frost protection facilit DI3 Supply air fan on DIA Anti icing function outputs AO 18 AO1 Ytactuatorforheater 19 20 AO1 19 AQ Y2 actuator for HRec 20 ACB Y3 actuator for cooler Collective alarm Reference potential for analogue inputs Al Outside temperature sensor Al2 Sensor for supply air temperature 31 Reference potential for analogue inputs Al Frost protection sensor Return air temperature P100012091 31 SAUTER flexotron 800 Ventilation application XSAUTER Other functions 9 8 4 RDT828 Cascade control with CO control Structure of installation Outside and exhaust air dampers Air filter Fans activated via VFD when VFD is enabled Heating coil with pump regulating valve frost monitor return sensor Air cooler with regulating valve HRec with plate heat exchanger Supply air sensor Outside and return air sensors CO sensor in return air Closed loop control functions Temperature control with return air supply air cascade Control of the CO level O
17. e shown here This menu shows if the digital inputs and outputs are On or Off Here you can view all actual and setpoint values for temperature control The menu is visible to all users regardless of log on level However to make changes you need at least Operator authority Only menus for activated functions will be shown 4 3 1 Setpoint Supply air temperature control P100012091 Setpoint Supply air control Here Actual and Setpoint values are shown as well as the outdoor temperature if a outdoor sensor has been configured This is a read only menu No settings can be made here Submenu Setpoint 12 SAUTER flexotron 800 Ventilation application YSAUTER The menu system 4 3 2 Setpoint Outdoor temperature compensated Supply air control Setpoint Outdoor compensated supply air control Here Actual and Setpoint values are shown as well as the outdoor temperature if a outdoor sensor has been configured This is a read only menu No settings can be made here Br Submenus Setpoint In control modes Supply air control Room control and Supply air control Extract air control the setpoint relationship is used when supply air control is active Use the eight breakpoints to generate a setpoint outdoor temperature relationship In between values are calculated using Straight lines between breakpoints Setpoints for temperatures lower than the lowest breakpoint and higher than the highest breakpoint
18. educing the need for cooling during the day and saving energy Support control is used for adjusting the room temperature outside of the normal running time If there is a heating or cooling demand in the room the unit will start and the temperature will be adjusted The fire function determines the settings for the fire dampers and the unit s running mode when a fire alarm is activated Frost protection is normally always used in water heating systems The cooling recovery function reverses the heat exchanger in order to return cooling from the extract air when the extract air is colder than the outdoor air and cooling is required An analogue input can be configured for an external setpoint device Alarm log which contains the 40 latest alarm events The most recent event is listed first The alarm log can only be used for viewing the alarm history Alarms are handled in a special area see the section Alarm handling 11 SAUTER flexotron 800 Ventilation application The menu system 4 2 4 Inputs Outputs Analogue inputs outputs Digital inputs outputs 4 3 Temperature SAUTER These menus show the current values for all configured inputs and outputs These are read only menus No changes can be made here Universal inputs can be configured as either analogue or digital inputs Analogue inputs and digital outputs are shown here as examples The current values for the analogue inputs and outputs ar
19. enus for EAF Setpoint Pressure control Here Actual and Setpoint values are displayed This is a read only menu No settings can be made here Submenu Setpoint values for normal speed 1 1 and reduced speed 1 2 Submenu Outdoor compensation An outdoor temperature dependent compensation of the pressure setpoint value can be added The compensation can be set for either the supply air fan alone or for both fans Submenu Extra compensation A temperature dependent compensation similar to the one above but with selectable temperature source P100012091 17 SAUTER flexotron 800 Ventilation application XYSAUTER The menu system 4 4 2 Flow control SAF There are also corresponding menus for EAF Setpoint Flow control Here Actual and Setpoint values are displayed This is a read only menu No settings can be made here Submenu Setpoint values for normal speed 1 1 and reduced speed 1 2 Submenu Outdoor compensation An outdoor temperature dependent compensation of the pressure setpoint value can be added The compensation can be set for either the supply air fan alone or for both fans Submenu Extra compensation A temperature dependent compensation similar to the one above but with selectable temperature source 4 4 3 Manual frequency control SAF There are also corresponding menus for EAF Setpoint Fixed output signal Here Actual and Setpoint values are displayed This is a read on
20. es for each week day plus a separate holiday setting Up to 24 individual holiday periods can be configured A holiday period can be anything from one day up to 365 days Holiday schedules take precedence over other schedules Each day has up to two individual running periods For two speed fans and pressure controlled fans there are daily individual schedules for normal speed and reduced speed each with up to two running periods Up to 5 digital outputs can be used as timer controlled outputs Each with individual week schedules with two activation periods per day These outputs can be used to control lighting doorlocks etc Only outputs which have been configured will be shown 4 6 2 Time Date This menu shows and permits the setting of time and date Time is shown in 24 hour format Date is shown in the format YY MM DD 4 6 3 Timer Normal speed There are 8 separate setting menus one for each weekday and one extra for holidays Holiday schedules take precedence over other schedules For 24 hour running set a period to 0 00 24 00 To inactivate a period set the time to 00 00 00 00 If both periods of a day are set to 0 00 0 00 the unit will not run at normal speed that day If you want to run the unit from one day to another e g from Mon 22 00 to Tue 09 00 the desired running time for the various days must be entered individually First Mon 22 00 24 00 then Tue 00 00 09 00
21. lable to users with Operator access and lower Revision A February 2013 Software revision 3 1 More information More information about flexotron 800 can be found in e Manual flexotron 800 Ventilation Complete manual for configuration and maintenance of flexotron 800 with ventilation application available in English German and French e Manual CASE flexotron Manual on how to configure the controllers using the PC software CASE flexotron available in English German and French e Network variables for Modbus Variable list for Modbus communication available in English e CE Declaration of conformity flexotron 800 The information is available for download from SAUTER website http www sauter controls com en P100012091 4 SAUTER flexotron 800 Ventilation application XSAUTER About flexotron 800 2 About flexotron 800 flexotron 800 is a series of pre programmed configurable controllers for different applications flexotron 800 series comprises three model sizes 8 15 or 28 in outputs Available with or without front panel display and buttons For units without front panel display and buttons a separate cable connected terminal with display and buttons RDB800 is available All normal handling can be done using the display and buttons or from a connected computer running CASE flexotron 111102 2 1 Ventilation application overview of functions P100012091 The controller is loaded wi
22. ly menu No settings can be made here Submenu Setpoint values for normal speed 1 1 and reduced speed 1 2 The setpoint is set in of the full output 100 10 V output signal Submenu Outdoor compensation An outdoor temperature dependent compensation of the pressure setpoint value can be added The compensation can be set for either the supply air fan alone or for both fans Submenu Extra compensation A temperature dependent compensation similar to the one above but with selectable temperature source P100012091 18 SAUTER flexotron 800 Ventilation application YSAUTER The menu system 4 4 4 CO2 VOC In applications with varying occupancy the fan speed can be controlled by the air quality as measured by a CO VOC sensor 4 5 Humidity control This menu is only shown if humidity control has been configured 4 5 1 Humidity sensor room Humidity control can be configured as either Humidification or Dehumidification or as combined Humidification Dehumidification 4 5 2 Humidity sensor duct A duct humidity sensor is only used for maximum limitation function P100012091 19 SAUTER flexotron 800 Ventilation application YSAUTER The menu system 4 6 Time settings 4 6 1 General The controller has a year base clock function This means that a week schedule with holiday periods for a full year can be set The clock has an automatic summertime wintertime change over Individual schedul
23. on If a fault is indicated for the motor air flow frost protection facility supply air sensor or fire the plant is shut down A collective alarm can be indicated externally When air filters are dirty the filter monitor issues a maintenance message The monitor for fine differential pressure on the exhaust air side protects the HRec plate coil from excessive icing If the plant is running properly the temperature control system corrects the variable setpoint via the heating coil the air cooler and the HRec The provision of heat or 34 SAUTER flexotron 800 Ventilation application Ss AUTER Other functions cold e g supply pump boiler or chiller is switched on via the external contacts for heat cooling demand At the same time the humidity is regulated using a PI controller in accordance with the humidity level in the return air A sensor in the supply air monitors the maximum humidity value The minimum and maximum inlet temperature is then limited The start up circuit reduces the risk of faults due to frost when outside temperatures are very low The standstill control system protects the heating coil in areas not protected from frost Terminal assignment Le eke i Supply voltage 24 V AC or 24 V DC c MM__ 15 50 60 Hz RS485 Modbus not with Sn web TCP IP made aoe 24 V DC Reference point for digital inputs V DI Reference point for digital outputs DO DO Supply air fan level 2 DO4 9 DH External OF
24. ontrol Actual value The current measured temperature Setpoint value The desired configured temperature Pressing the Down button will move you through the menu choices at this the lowest level The Up button will move you back through the choices Which menus are shown depends on which access level you are using see the section Access rights for more information about logging on to higher levels The basic access level the level normally active when you have not logged on only shows a limited number of menus and submenus Running mode Here you can view and set the unit s running mode as well as view selected control functions and alarm events Temperature Air control and Humidity control Here relevant values and setpoint values are displayed Setpoints can only be changed if you have Operator access or higher Time settings Here the time date and set running times are shown Values can only be changed if you have Operator access or higher Access rights Here you can log on to a higher level log off to the basic level and change the password A user with Normal access the basic level can view a limited selection of menus The unit s running mode can be changed and alarms acknowledged If you have Operator access you can access more information and change other operation parameters like setpoints and time functions To get to the next menu level use the Up and Down buitons to place the display marker opposite
25. or return air sensor the sensor monitoring is activated The minimum and maximum supply air temperature is then limited The start up circuit reduces the risk of faults due to frost when outside temperatures are very low The standstill control system protects the heating coil in areas not protected from frost Terminal assignment La ES 1 Supply voltage 24 V AC or 24 V DC MM 15 50 60 Hz m 2 D H Eanwre web TOPIP modes arth wire web TCP IP models 24 24 V DC Reference point for digital V inputs DI Reference point for digital outputs DO External OFF switch DO1 Heating coil pump Supply air fan variable frequency drive i Frost protection facilit DI3 oo Ee enabled Anti icing function Return air fan variable frequency drive DI5 Heating coil pump on Collective alarm Filter monitor DO5 Cooling demand 36 DO6 Not used Notused S Reference potential for analogue inputs Outside temperature Supply air temperature Reference potential for analogue inputs 31 Al Frost protection sensor Return air temperature Reference potential for universal inputs setpoint for room temperature DI7 EN g Em Ec e 14 15 16 Y1 actuator for heater Y2 actuator for HRec D7 Di8 Reference potential for analogue outputs AO A01 ms a Y3 actuator for cooler 21 AO4 Supply airfan 22 AOS Return airfan 18 AO1 19 AO2 2
26. or for fine differential pressure on the exhaust air side protects the HRec plate coil from excessive icing If the unit is running properly the temperature control system corrects the variable setpoint via the heating coil the HRec and the air cooler The heater start up circuit reduces the risk of frost faults when outside temperatures are very low The standstill control system protects the heating coil in areas not protected from frost 28 SAUTER flexotron 800 Ventilation application Ss AUTER Other functions Terminal assignment ae Supply voltage 24 V AC or 24 V DC mm 15 50 60 Hz l RS485 Modbus not with SET web TOPIP modal 124V 24 V DC Reference point for digital inputs DI EE DO EE EE Supply air fan level 2 9 Dit External OFF switch Reference potential for analogue inputs Al Supply air fan on Outside temperature sensor Anti icing function Sensor for supply air temperature l Reference potential for analogue Reference potential for analogue inputs Al outputs AO Frost protection sensor Y1 actuator for heater Setpoint for room temperature Y2 actuator for HRec Y3 actuator for cooler P100012091 29 SAUTER flexotron 800 Ventilation application SAUTER Other functions 5 8 3 RDT815 Cascade control Structure of installation e Energy recovery using plate heat exchanger e 2 speed fans e Heating coil with pump regulating valve frost monitor return sensor e Air cooler with regulating
27. ove to the next one To pass a value without changing it press RIGHT To abort a change and return to the initial setting press and hold the C button until the cursor disappears Collected here are a number of menus showing running mode selected functions alarm events and status of inputs and outputs mode Running mode unit P100012091 The unit s running mode can be changed without logging on The running mode can be set to Auto Off Manual reduced run or Manual normal run The Auto mode should normally be used Off can be used to stop the unit for service and similar Manual normal run or Manual reduced run will start the unit even if the timer says that the running mode should be Off If the running mode is set to Off Manual normal run or Manual reduced run a C alarm is activated Running mode Manual The alarm automatically resets when the running mode is set to Auto again Shows the accumulated running times for the fans 10 SAUTER flexotron 800 Ventilation application The menu system 4 2 2 Selected functions 4 2 3 Alarm events P100012091 SAUTER In these menus you can see how some of the most important functions have been configured Changes cannot be made Heater exchanger and cooling type If one of the functions is not used it will be shown as Not used This function is used during the summer to cool the building night time using cool outdoor air thereby r
28. pen loop control functions Start up circuit Filter monitoring Free outside air cooling Frost monitor Sensor monitoring change over Min max limit for inlet temperature Motor air flow monitor Anti jamming facility for pump Collective alarm Standstill control External cooling request HRec anti icing function P100012091 Brief description The outside air and exhaust air dampers along with the HRec bypass valve are closed when the plant is switched off The plant can be switched on or off in automatic mode using a time programme or free outside air cooling If a fault is indicated for the motor air flow frost protection facility or supply air sensor the plant is shut down A collective alarm can be indicated externally When air filters are dirty the filter monitor issues a maintenance message The monitor for fine differential pressure on the exhaust air side protects the HRec plate register from excessive icing 32 SAUTER flexotron 800 Ventilation application Ss AUTER Other functions If the plant is running properly the temperature control system corrects the variable setpoint via the heating coil the air cooler and the HRec The CO control system increases the speed of the fan according to the CO level The cold supply e g supply pump or chiller is activated using the external contacts for cooling demand If a wire breaks or there is a short circuit in the room air
29. priate 4 digit code The log on menu will also be displayed should you try to gain access to a menu or try to do an operation requiring higher authority than you have Press the OK button and a cursor marker will appear at the first digit position Repeatedly press the UP button until the correct digit is displayed Press the RIGHT button to move to the next position Repeat the procedure until all four digits are displayed Then press OK to confirm After a short while the text on the line Present level will change to display the new log on level Press the LEFT button to leave the menu The Code for Operator acess level is 3333 4 7 2 Log off Use this menu to log off from the present level to the basic no log on level 4 7 3 Automatic logoff If the access level is Operator Service or Admin the user will automatically be logged off to Normal after a settable time of inactivity The time is settable 4 7 4 Change password You can only change the password for access levels lower or equal to the presently active level P100012091 22 SAUTER flexotron 800 Ventilation application SAUTER Other functions 5 Other functions 5 1 Alarm handling 5 2 Free text If an alarm condition occurs the red alarm LED on the front panel of units with display or the alarm LED on a connected display unit will start flashing The LED will continue to flash as long as there are unacknowledged alarms Alarms are logged in the
30. r Water heated or DX up to 3 steps Circulation pumps heating cooling exchanger Fan control 1 or 2 speed supply air fans and extract air fans Frequency controlled supply and extract air fans with pressure or flow control manual control or external control from a VAV system Pressure controlled supply air fan with slave connected extract air fan output dependent or flow dependent Humidity control Either humidification or dehumidification or both humidification and dehumidification can be used Timer control For starting and stopping the unit Up to 5 timer outputs for control of external functions such as lighting doorlocks etc Demand control In buildings with strongly varying occupancy the fan speeds or mixing dampers can be controlled by the air quality measured by a CO VOC sensor Support control When using the control function room control or extract air temperature control it is possible to utilise support heating and or support cooling Free cooling When this function has been activated it is used during the summer to cool the building during the night using cool outdoor air thereby reducing the need to run chillers during the day Enthalpy control Measures and compares the energy content enthalpy of the outdoor air and the extract air temperature and air humidity When this function is active the mixing damper signal will be overridden to recirculation if the enthalpy is higher outdoors than indoors
31. th programs for controlling a ventilation unit The temperature controller is based on a supply air Pl controller for heating control with a pre programmed set of control modes A number of different control functions as well as analogue and digital input and output functions can be bound to this controller Certain functions are necessary others can be seen as functional options This flexibility means that what is shown in the display may differ from one unit to another depending on which functions have been selected Functional choices are not made in the operator level but in the Admin access level by educated personnel with specialised knowledge The same applies to other configuration The program for an air handling unit contains apart from other things the following functions Different temperature control modes Supply air temperature control with or without outdoor temperature compensation Room temperature control cascade controller Extract air temperature control cascade controller Seasonal switching between supply air temperature control and room extract air temperature control Extra separate temperature control circuit for after heaters etc SAUTER flexotron 800 Ventilation application Ws AUTER About flexotron 800 P100012091 With control of Heat exchanger liquid connected plate or rotating or mixing dampers Heating coil Water with frost protection or electric with high temperature limit switch Chile
32. the menu you wish to access and press the Right button If you have sufficient log on privileges the display will change to the menu you have chosen At each level there may be several new menus through which you may move using the Up and Down buttons Sometimes there are further submenus linked to a menu or menu item This is indicated by an arrow symbol at the right hand edge of the display To choose one use the Right button again To go to a previous menu level press the Left button SAUTER flexotron 800 Ventilation application XSAUTER The menu system 4 1 1 4 2 4 2 1 Change parameters Running In some menus there are parameters that can be set This is indicated by the yellow LED with 4 flashing A quick blinking 2 times s indicates that the parameter can be changed using the present user access A slower blinking 1 time s indicates that a higher user access is required to change the parameter To change a parameter first press the OK button lf you need a higher user access than you have to change the parameter a log on menu will be displayed see below Otherwise a cursor will appear at the first settable value lf you wish to change the value do so by pressing the Up and Down buttons In numbers containing several digits you can move between the digits using the Left Right buttons When the desired value is displayed press OK If there are further settable values displayed the cursor will automatically m
33. ulation offset SAF makes it possible to add to the supply air fan an offset to the setpoint during normal operation If pressure control has been configured the offset is set in Pa If flow control has been configured it is set in m3 h If manual control has been configured the offset is set in If you have selected the Offset function which is a deviation from the regular supply air setpoint you will instead be given the option to change this offset value here P100012091 15 SAUTER flexotron 800 Ventilation application XYSAUTER The menu system 4 3 10 Extra control circuit An independent temperature control circuit for control of for example after heaters The circuit can be configured to either heating or cooling 4 3 11 Enthalpy control Enthalpy control is a function for overriding the mixing damper output signal to recirculation if the enthalpy is higher outdoors than indoors Submenu for reading of outdoor temperature and outdoor air humidity Submenu for reading of indoor temperature and air humidity in the room Shows if enthalpy control is active or not P100012091 16 SAUTER flexotron 800 Ventilation application SAUTER The menu system 4 4 Air control This menu is only shown if frequency controlled fans have been configured Depending on the choice of fan control different combinations of the menus below will be shown 4 4 1 Pressure control SAF There are also corresponding m
34. valve e Supply air sensor e Outside and return air sensors e Air filter Closed loop control functions e Temperature control using return air supply air cascade Open loop control functions e Start up circuit e Free outside air cooling e Frost monitor e Sensor monitoring e Min max limit for supply air temperature e Motor air flow monitor e Anti jamming function for pump e Collective alarm e Standstill control DO DO4 001 002 D03 Brief description The outside air and exhaust air damper along with the HRec bypass valve are closed when the plant is switched off The plant can be switched on or off in automatic mode using a time programme or free outside air cooling If a fault is indicated for the motor air flow frost protection facility or supply air sensor the plant is shut down A collective alarm can be indicated externally The monitor for fine differential pressure on the exhaust air side protects the HRec plate coil from excessive icing If the plant is running properly the return air supply air cascade temperature control corrects the variable setpoint via the heating coil the HRec and the air cooler If a wire breaks or there is a short circuit in the return air sensor the sensor monitor is activated The minimum and maximum supply air temperature is then limited The Start up circuit reduces the risk of faults due to frost when outside temperatures are very low The standstill control system prote
35. ving LAN Web models Yellow Gree Green Connected to other network n equipment Blinking green Network traffic Blinking yellow For identifying P B Power Battery Green Red Power on Battery error Controllers with built in ut peed A Alarm indication 5 6 Changing the battery The controller flexotron 800 has an internal battery to ensure the operation of the memory and real time clock in the event of a power failure When the alarm Internal Battery is activated and the battery LED lights up red the battery has become too weak and needs to be changed Nonetheless due to a backup capacitor the controller will function at least 10 minutes without power supply Since changing the battery requires knowledge of proper ESD protection as well as dismantling and opening of the unit this should be handled by skilled service personnel P100012091 24 SAUTER flexotron 800 Ventilation application Ws AUTER Other functions 5 7 Start assistant When the controller is switched on for the first time it runs through a special procedure 1 Select one of the following applications by pressing the Down button o Ventilation Heating or Boiler then continue using the Right button 2 Select application settings using the OK and Down buttons The following selection options are available for the ventilation application o Standard Factory settings o 808 fixed value Fixed value control for supply air o 815 fixed value Fixed v
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