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SAUTER flexotron800 V2 Ventilation V3.3

1. Press OK to choose language Use the up and down arrows to move between languages and press OK to confirm your choice After a few seconds the display will show a start display in English for the chosen application After another few seconds the display text will change to the selected language if another language than English has been selected 3 4 Ventilation application 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 in and output functions can be bound to this controller Certain functions are necessary while others can be considered optional The choice of which functions are to be used is free the only restriction is the physical number of inputs and outputs of the different models The flexotron800 are designed for DIN rail mounting The program for an air handling unit contains apart from other things the following functions Different temperature control modes e Supply air temperature control with or without outdoor temperature compensation e Room temperature control cascade control 16 175 P100013557 flexotron800 P100013557 SAUTER About flexotron800 e Extract air control cascade control e Seasonal switching between supply air temperature control and room extract air temperature control e Outdoor compensated room extract air contr
2. 118 175 P100013557 flexotron800 P100013557 Alarm limits room Alarm limit frost protection Alarm limit pressure Alarm limit Humidity Alarm limit exchanger efficiency Service alarm filter SAUTER Settings 119 175 SAUTER Settings 16 6 2 Alarm delays 120 175 Alarm delay supply air Alarm delay extract air Alarm delay room Alarm delay frost protection Alarm delay control SAF and EAF Alarm delay Humidity flexotron800 P100013557 flexotron800 P100013557 SAUTER Settings Alarm delay exchanger efficiency Alarm delay fan malfunction Alarm delay pump malfunction Alarm delay misc Ext Frost prot DI refers to the digital input signal Deicing Heat exchanger Alarm delay misc 2 Frost protection DI refers to the digital input signal De icing thermostat exchanger Alarm delay misc 3 TAWA S AUT E R flexotron800 Settings 16 6 3 Restore alarm 16 7 Save and restore settings In this menu it is possible to restore all parameters to their factory settings or to the user settings they were saved as earlier see below The present configuration can be saved in a separate memory area and can later be restored using the previous menu Restore user settings 122 175 P100013557 flexotron800 SAUTER Expansion model 17 Expansion model 17 1 Ports 17 2 Wiring 2 and 3 port fl
3. 18 29 1 18 29 2 18 29 3 Modbus communication Function port 2 BACnet communication 18 30 Other parameters 18 30 1 18 30 2 18 30 3 18 30 4 18 30 5 18 30 6 18 30 7 18 30 8 18 30 9 18 30 10 Start and stop delays for the fans Retardation time Heating at start up and high speed blocking Start delay exchanger Exchanger to 100 at start and alarm delay at start Split controller signal Outdoor temp for control mode change Split of optional temp sequence Fast stop on overheating Automatic restart at power up 18 31 System 18 31 1 18 31 2 18 31 3 18 31 4 18 31 5 18 31 6 18 31 7 Change language Content 143 144 144 145 146 147 150 150 152 152 152 152 153 153 153 154 154 156 156 156 156 157 157 Choose start display the text normally shown on the display 157 Automatic summer wintertime change over Address Display anywhere remote control Automatic logoff Activation of start up wizard 19 Other functions 19 1 Alarm handling 19 2 Free text 19 3 Revision number 19 4 Language 19 5 Indication LEDs 20 Menu structure 21 Changing the battery 21 1 Start up wizard 21 2 Energy calculation 21 3 SFP Specific Fan Power 22 Appendix 22 1 Frequency converters 158 159 159 159 160 161 161 162 162 162 162 163 167 168 170 170 171 171 7 175 S AUTE R flexotron800 8 175 P100013557 flexotron800 1 Generell notes 1 1 Disclaimer 1 2 Trademarks
4. Intake temperature Intake Temp Intaketemp Extra temperature sensor 1 Extra Sensor Temp 1 Extrasensor1 Extra temperature sensor 2 Extra Sensor Temp 2 Extrasensor2 Extra temperature sensor 3 Extra Sensor Temp 3 Extrasensor3 Extra temperature sensor 4 Extra Sensor Temp 4 Extrasensor4 Extra temperature sensor 5 Extra Sensor Temp 5 Extrasensor5 Extra pressure transmitter supply air Extra SAF Pressure Extra SAF Pressure 27 175 SAUTER Installation and wiring 28 175 v Description Extra pressure transmitter extract air External flow pressure transmitter Analogue filter guard 1 Analogue filter guard 2 Digital input signal v Description Inactive input Filter guard supply air Filter guard extract air Run indication alarm circula tion pump Heating Run indication alarm circula tion pump exchanger Run indication alarm circula tion pump Cooling Fire alarm Fire damper end switch monitoring Extended operation Normal Extended operation Redu ced External switch External alarm Flow switch Rotation guard exchanger Run indication alarm supply air fan Run indication alarm extract air fan Deicing thermostat ex changer Frost protection thermostat water heater High temperature limit switch Recirculation start Change over CASE flexotron Extra EAF Pressure External flow setpoint Filter Guard 1 Filter Guard 2 CASE flexotron Not used Filter guard1 Filter guard
5. Functional description Start by reading chapter 6 Functional description below Some functions are essential to the working of the unit and must be included Others are more of the nature of optional extras which can be excluded At the end of each function description there is a table of the necessary inputs and outputs to implement the function At the end of the manual there is a list of all the analogue and digital inputs and outputs As you read mark in the list the inputs and outputs you will be using for the application you are building Note that the universal inputs in RDT828 can individually be configured as either analogue or digital inputs Display buttons and LEDs Read section 8 Display LEDs and buttons on how to use the front panel buttons to navigate the flexotron800 menu system Access rights Read section 9 Access rights Learn how to log on to the flexotron 800 Configuration Read section 18 Configuration Connect power to the controller Using the buttons and menu system go through the configuration menus covering the functions you wish to use On delivery the units already have the inputs and outputs assigned to various functions These can of course be changed In chapter 4 Installation and wiring there are two sets of wiring diagrams one set showing the pre configured input output configuration and one set where you can fill your own configuration choices Settings Read section 16 Settings Set the co
6. Malfunction Supply air fan Malfunction Extract air fan Malfunction pump Heating circuit Malfunction pump Cooling circuit Malfunction pump Liquid connected exchanger Filter guard 1 pressure switch activated Flow switch activated External Frost protection thermostat activated Exchanger de icing pressure switch activated Fire alarm activated External switch activated External alarm activated Supply air temp deviates too much from the setpoint for too long The room humidity deviates too much from the setpoint Supply air temp too high Supply air temp too low Maximum limiting of supply air temp active Minimum limiting of supply air temp active Room temp too high during room temp control Room temp too low during room temp control High extract air temp during extract air control Low extract air temp during extract air control Heater high temperature limit switch activated Frost protection function is overriding the control of the heater output Frost protection temperature below frost limit value Heat exchanger efficiency below limit value Malfunction of connected sensor 147 175 SAUTER Configuration 148 175 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 Alarm text Analogue de icing Rotation guard exchanger Fire damper is out of operation Supply Air Fan control e
7. 6 1 6 Support control 55 6 1 7 Free cooling 56 6 1 8 Cooling recovery 57 6 1 9 Enthalpy control 58 6 1 10 Heat exchanger efficiency monitoring 58 6 1 11 External setpoint 59 6 1 12 Recirculation 59 6 1 13 Change over 60 6 1 14 Extra temperature sensor 60 6 1 15 Extra flow sensors supply air and extract air 61 6 2 Extra control circuit 61 6 3 Humidity control 61 6 3 1 Humidification 61 6 3 2 Dehumidification 61 6 3 3 Humidification dehumidification 62 6 3 4 Digital humidity signal 62 6 4 Fan control 62 6 4 1 Pressure control 64 6 4 2 Frequency control flow 65 6 4 3 Frequency control manual 66 6 4 4 Frequency control external control signal 66 6 4 5 Frequency control SAF with EAF slave 66 6 4 6 Frequency control EAF with SAF slave 66 6 4 7 Frequency control SAF with flow control EAF 67 6 4 8 Frequency control EAF with flow control SAF 67 6 4 9 Frequency control SAF and EAF with external flow setpoint 67 6 4 10 Demand controlled ventilation 68 6 5 Pump control 70 6 5 1 Heating circuit 70 6 5 2 Exchanger circuit liquid connected exchangers 70 6 5 3 Cooling circuit 70 6 6 Damper control 71 6 6 1 Close off dampers 71 6 6 2 Fire dampers 71 6 7 Extended running and External switch 72 6 8 Time switch outputs 73 6 9 Alarms 73 6 9 1 Alarm handling 73 6 9 2 Alarm priorities 73 6 9 3 Stop function 73 6 9 4 Alarm text 74 7 Starting and stopping the unit 75 7 1 Start conditions 75 7 1 1 Possibility to block automatic restart at power up 75 7 2
8. A way to calculate power consumption per flow unit kW m3 s Romanian language support Changeable X value outdoor temperature for outdoor compensated setpoints in display and web site The order of priority for fire alarms has been changed CO2 VOC control on extra sequence Y4 The operating system has been further improved Support for three communication ports BACnet IP is now available as a communication protocol New filter alarm Separate filter alarms Analogue filter alarm filter pressure alarm Temperature alarm for extra sensors 1 5 Support for 0 10V outdoor sensor and room sensor e Modulating recirculation air damper Y4 Extra sequence e Communication with Danfoss model Frequency converters FC 101 now supported e Additional Modbus signals 3 2 Application choice 14 175 On delivery the main memory of the flexotron800 controller is empty All the application programs are located in a separate memory area On the first start up the controller will start a special program for downloading a suitable application and suitable languages to the main memory The initial screen details the model of the flexotron800 unit its communication address communication speed and which software revision is loaded into the unit Press down arrow to go to Application choices Use the Up and Down buttons to move the cursor in the left edge of the display to the function you wish to select Sele
9. Control of dampers and pump for preheated or pre cooled outdoor air via an underground intake channel The digital output Pretreatment is set to preheating when the unit is started and the outdoor temperature is below the set heating start limit default 8 C or to precooling when the outdoor temperature is above the set cooling start limit default 19 C 145 175 SAUTER Configuration 18 28 Alarm setting 146 175 flexotron800 If the outdoor temperature exceeds the set heating start limit by more than 1 C fixed preheating will be aborted as well as if the outdoor temperature falls below the cooling start limit by 1 C If a sensor is configured in the intake duct intaketemp this temperature will be compared with the outdoor temperature If the temperature in the intake duct does not exceed the outdoor temperature by more than 1 C adjustable 5 minutes fixed after start up when using preheating preheating will be aborted The same conditions apply to precooling i e if the intake temperature is not more than 1 C adjustable cooler than the outdoor temperature precooling will be aborted Pretreatment always starts at start up of the unit if the outdoor temperature so permits If pretreatment is aborted due to a small difference between the intake temperature and the outdoor temperature pretreatment will be blocked for 6 hours Then pretreatment will start if the outdoor temperature so permits and
10. SAUTER Generell notes The information in this manual has been carefully checked and is believed to be correct Fr Sauter AG however makes no warranties as regards the contents of this manual and users are requested to report errors discrepancies or ambiguities to Fr Sauter AG so that corrections may be made in future editions The information in this document is subject to change without prior notification The software described in this document is supplied under licence and may be used or copied only in accordance with the terms of the licence No part of this document may be reproduced or transmitted in any form in any fashion electronically or mechanically without the express written permission of Fr Sauter AG flexotron is a registered trademarks of Fr Sauter AG Windows Windows 2000 Windows XP Windows Vista Windows 7 Windows 8 and Windows Server 2003 are registered trademarks of Microsoft Corporation Some product names mentioned in this document are used for identification purposes only and may be the registered trademarks of their respective companies Revision A August 2014 Software revision 3 3 13 Safety information 1 3 1 Mandatory note P100013557 A mandatory note contains important information that you must adhere to It can contain the following e An instruction e Important information A mandatory note appears after this symbol Non adherence to this note can have serious consequences f
11. The internal signal is then used to activate digital outputs for control of the heaters chillers Up to four heater outputs and three cooler outputs can be configured There are two possible modes Sequential Each output step has individually settable on and off values in percent of the control signal The number of steps is equal to the number of heater chiller groups Minimum on and off times can be set i e the minimum time the step has to be inactive or active for a change to occur Binary The heater power outputs should be binary weighted 1 2 4 8 for heating 1 2 4 for cooling The number of loads to be controlled is set Thereafter the program will automatically calculate the individual activation levels Switching differential and minimum on off times can be set The number of heating steps will be 2no of groups 1 In binary mode the analogue output signal may be used to fill out between the steps The signal will go 0 100 between the activation of each step The load connected to the analogue signal should have the same size as the smallest of the binary groups In the example below there are 4 heater groups 1 1 2 4 and the total number of heating steps is eight P100013557 flexotron800 YS AUTE R Functional description 6 1 5 2 Step controllers and Change over The digital output signals Heating cooling step 1 Heating cooling step 2 and Heating cooling step 3 are used for step controllers duri
12. step 2 optional DO DO DO Step controller step 3 optional DO Step controller step 4 optional 6 1 5 7 Override of reduced speed for DX cooling 6 1 6 Support control Override to normal quantity of air for DX cooling when the unit runs on reduced quantity of air The fans can be set to normal operation when cooling is required at high outdoor temperatures e g gt 14 C the same temperature limit as for blocking of DX cooling Support control is normally used when room temperature control or extract air control has been configured When extract air control is configured a room sensor must be installed Support control Heating or Support control Cooling will run if Support control is configured the running mode is in Off state timer control OFF and not in extended running and if conditions call for support control see below Minimum run time is settable 0 to 720 minutes FS 20 minutes Support control can also be configured when supply air temperature control is used if a room sensor is installed The controller uses the configured min FS 15 C and max FS 30 C limitation values as support control setpoints However in this case the min and max limitation values cannot be changed To change the values temporarily configure room control change the min and max values and then change back to supply air control Support control can also be configured to start only with the supply air fan In this mode
13. using a suitable front mounting kit in a cabinet door or other control panel Ambient temperature 0 50 C Humidity Max 95 RH non condensing The picture below shows a wiring example for RDT828 2 10A EN 61558 2 6 24V as as DI contacts outputs Options RDT828F022 RDT828F032 RDT828F222 RDT828F232 P100013557 LS MM 24 V 0 10 V Actuator Temp sensors Ni1000 Transmitter 0 10 V TCP IP 23 175 SAUTER Installation and wiring 4 2 Wiring 4 2 1 Supply voltage flexotron800 At the end of this section are terminal assignment plans that show the available factory setting configurations There are also empty wiring diagrams Since the function of most of the inputs and outputs depends on the programming of the unit the final wiring diagram cannot be filled in until the installer has decided how to use the inputs outputs It is important to ensure that the wiring is performed correctly and in accordance with the instructions given in this manual 24 V 15 50 60 Hz or 20 36 V DC If controller flexotron800 and its connected actuators share the same transformer it is essential that the same transformer pole is used as reference for all the equipment The equipment may otherwise not function as intended and may also suffer damages
14. 1 2 speed and OFF MANUAL 1 2 speed is not valid for single speed fans 111 175 SAUTER Manual Auto 112 175 flexotron800 With pressure controlled fans you get the following menu Can be set to AUTO MANUAL NORMAL MANUAL REDUCED MANUAL and OFF In MANUAL mode the output signal can be set 0 10 V Y1 heating output Y2 heat exchanger Y3 cooling P100013557 flexotron800 S AUT E R Manual Auto Humidification dehumidification Circulation pumps Heating Exchanger and Cooling Dampers Outdoor air Recirculation air Exhaust air and Fire dampers Extra control circuit P100013557 113 175 S AUT E R flexotron800 Manual Auto Extra sequence Y4 Extra sequence Y5 114 175 P100013557 flexotron800 16 Settings 16 1 Control temp P100013557 SAUTER Settings In this menu group all settings for all activated functions should be available The menu group is only available when logging on as Admin Depending on what choices have been made during configuration some of the alternatives in this menu group may not be shown A complete overview of the menu structure is available in section 20 Menu structure Settings Supply air controller The set P band for the supply air controller is for the whole controller signal This means that the P band for each sequence is proportionate to the split percentage values given to sequences F
15. 7 41 DO1 40 DO2 39 DO3 38 DO4 9 DI1 37 DO5 10 DI2 36 DO6 11 DI3 35 DO7 12 DI4 13 DI5 34 Reference potential for analogue inputs Al 14 DI6 33 Alt 15 DI7 32 Al2 16 DI8 31 Reference potential for analogue inputs Al 30 AI3 17 Reference potential for analogue E outputs AO 29 Al4 18 AO1 19 AQ2 28 Reference potential for universal inputs UI 20 AO3 27 UN 21 AO4 26 Ul2 22 AO5 25 Reference potential for universal inputs UI 24 UIS 23 Ul4 36 175 P100013557 flexotron800 SAUTER Installation and wiring 4 9 Empty wiring diagram RDT815 LS Power supply 24 V AC or 24 V DC D RS485 Modbus not with web TCP IP 15 50 60 Hz models MM 2 D Earth conductor 3 C IE 43 24V 24 V DC Reference point for digital inputs DI 4 E 42 LS Reference point for digital outputs DO 41 DO1 40 DO2 z E 39 DO3 38 DO4 9 DI 10 DI2 34 Reference potential for analogue inputs Al 11 DI3 33 Alt 12 DI4 32 Al2 31 Reference potential for analogue inputs Al 17 Reference potential for analogue outputs j AO 30 AI3 18 AO1 29 Al4 19 AO2 20 AO3 4 10 Empty wiring diagram RDT808 LS Supply voltage 24 V AC or 24 V DC D RS485 Modbus not in WEB TCP IP 15 50 60 Hz models MM 2 D Protective earth 3 C IE 43 24V 2
16. Alarm frequency converter EAF Communication error Frequency SAF Communication error Frequency EAF Communication error Expansion unit 1 Communication error Expansion unit 2 Warning Frequency converter SAF Warning Frequency converter EAF Output in manual mode Time for service Manual Y4 Extra Sequence control Restart blocked after power on Manual Y5 Extra Sequence control Filter guard 2 High temp Extra sensor 1 Low temp Extra sensor 1 High temp Extra sensor 2 Low temp Extra sensor 2 High temp Extra sensor 3 Low temp Extra sensor 3 High temp Extra sensor 4 Low temp Extra sensor 4 High temp Extra sensor 5 100 Low temp Extra sensor 5 P100013557 SAUTER Configuration Pri Description B B B B B B B B B A C O Malfunction of connected sensor Malfunction of connected sensor Malfunction of connected sensor Malfunction of connected sensor Malfunction of connected sensor Malfunction of connected sensor Malfunction of connected sensor Malfunction of connected sensor Malfunction of frequency converter SAF Malfunction of frequency converter EAF Communication error Vacon NXL Lenze SMV Omron V1000 Emerson Communication error Vacon NXL Lenze SMV Omron V1000 Emerson Communication problem with connected expansion unit Communication problem with connected expansion unit Alarm from frequency converter via Modbus communication Alarm from frequency converter via Modbus communication
17. Analogue outputs Analogue outputs must refer to the Masse terminal placed in the AO terminal block All analogue outputs can be individually set to any one of the following signals e 0 10V DC e 2 10V DC e 10 0V DC e 10 2V DC If the controller flexotron800 and the actuators connected to it share the same transformer it is essential that the same transformer pole is used as reference for all the equipment Failure to do so will prevent the equipment from functioning as intended and may also lead to damages Digital outputs Digital outputs should normally refer on terminal 42 LS Terminal 42 LS is internally connected on terminal LS and supplies 24 V or 24 V depending on the choice of supply voltage All the digital outputs are controlled by MOSFET transistors The outputs are internally connected with LS and can deliver max 2 A per output However the total power for all the DOs must not be over 8 A A number of different wiring alternatives are possible depending on the type of supply voltage to the controller flexotron800 and the relay type 24 V supply and 24 V relays 25 175 S AUTE R flexotron800 Installation and wiring 24 V supply and 24 V relays 26 175 P100013557 SAUTER Installation and wiring flexotron800 4 2 3 Input and output lists The lists below are intended to be used during commissioning to help you keep track of the desired input and output functions The left co
18. For example you can choose if the Fire alarm input should be activated when it is closed or opened Therefore there is a risk that the signal is changed twice and the result is the opposite of the desired 18 1 3 Universal inputs UI P100013557 On the largest hardware version RDT828 there are universal inputs These can individually be configured as either analogue inputs or as digital inputs When configured as analogue inputs they can be bound to any of the analogue signals described under Analogue signals When configured as digital inputs they can be bound to any of the digital signals described under Digital signals 127 175 SAUTER Configuration flexotron800 After choosing Al or DI signal the unused alternative must be set to not active there are submenus with settings These menus are accessed by pressing RIGHT To simplify adaptation to external functions all universal inputs configured as digital inputs can be set to be either normally open NO or normally closed NC The inputs are as standard normally open i e if the input is closed the function connected to the input in flexotron800 is activated Be careful when changing the input from NO to NC since some digital functions can be configured to either NO or NC themselves For example you can choose if the Fire alarm input should be activated when it is closed or opened Therefore there is a risk that the signal is changed twice and the result
19. On increasing heat demand the water heating is first activated and then if needed the electric heating Frost protection and overheating protection are both active If step controller heating is used the function is tied to the output signal Split Fast stop on overheating If the function fast stop on overheating is active the fans will be immediately stopped when there is an overheating alarm regardless of the set cool down time In and outputs Water heating Electric heating Al Frost protection sensor optional DI Frost protection thermostat water heater optional DI High temperature limit switch DI Flow switch optional 49 175 SAUTER Functional description 6 1 4 Heat exchangers flexotron800 Frost protection can also be created using the digital input Frost protection thermostat water heater and an external thermostat Activation of the input will force the running mode to Off and an alarm will be activated The heating output is set to completely open the remaining control outputs are set to zero Frost protection thermostat cannot be combined with shutdown mode The heat exchanger unit can be set to one of the following alternatives e Plate exchanger e Rotating exchanger e Liquid connected exchanger e Mixing dampers 6 1 4 1 Plate exchanger Control The airflow through the exchanger is controlled by a shut off damper and a by pass damper Both dampers are controlled b
20. about logging on to higher levels Using Normal access the access which normally does not require logging on only a few basic menus are shown In the menu Running mode you can view and set the unit s running mode view selected control functions and view the alarm events In the menus Temperature Air control and Humidity control you can view actual values and setpoint values Setpoints can only be changed if you have Operator or Admin access In Time settings the time date and set running times are shown Values can only be changed if you have Operator or Admin access Without logging on to Operator or System level you are only authorised to change the unit s running mode and acknowledge alarms With Operator access you can access more information and change other operation parameters like setpoints and time functions With Admin access you have full access to the complete menu system and can change all parameters To enter a higher menu level use Up or Down to place the display marker opposite the menu you wish to access and press Right At each level there may P100013557 flexotron800 S AUTE R Display LEDs and buttons 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 Right aga
21. air temp controller in manual control Supply air fan in manual control The SAF is in manual mode Extract air fan in manual control The EAF is in manual mode The heater is in manual mode Heat exchanger output in manual control Cooling output in manual control Heating circulation pump in manual control Exchanger circulation pump in manual control Cooling circulation pump in manual control Fire dampers in manual control Internal battery needs replacing Malfunction of connected sensor Malfunction of connected sensor Malfunction of connected sensor Malfunction of connected sensor Malfunction of connected sensor Sensor error Extra sensor 1 Malfunction of connected sensor Malfunction of connected sensor Malfunction of connected sensor Malfunction of connected sensor Malfunction of connected sensor Malfunction of connected sensor Malfunction of connected sensor Malfunction of connected sensor Malfunction of connected sensor Malfunction of connected sensor Malfunction of connected sensor P100013557 flexotron800 66 67 68 69 70 71 72 73 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 Alarm text Sensor error Humidity outdoor Sensor error Intake temp Sensor error Extra sensor 2 Sensor error Extra sensor 3 Sensor error Extra sensor 4 Sensor error Extra sensor 5 Sensor error Extra SAF pressure Sensor error Extra EAF pressure Alarm frequency converter SAF
22. alarm i e an alarm if the run indication input is closed even though the motor control output is not activated See alarm 33 Supply Air Fan external operation and alarm 34 Extract Air Fan external operation in the section Alarm configuration An input configured as motor protection should be normally open i e closed contact when the motor is running e motor control output is activated will generate an alarm When running frequency controlled fans the pressure signal from each respective fan s pressure transmitter is normally used as run indication signal If the pressure falls below the set value during normal operation a malfunction alarm is activated P100013557 flexotron800 S AUT E R Configuration 18 22 1 Alarm from frequency converter When running frequency controlled fans you sometimes want to use both a pressure signal from a pressure transmitter and a digital alarm signal from a frequency converter An analogue input for a pressure transmitter and a digital input for SAF Indication or EAF Indication must then be configured The setting Run indication Motor protection SAF or EAF Indication must be set to Motor protection A fan alarm will be activated both when there is no pressure signal from the pressure transmitter and when the digital signal SAF Indication or EAF Indication is activated 18 23 Type of actuator Choose output signals to the actuators connected to
23. below the pre set start condition less the set differential Recirculation control is active and the conditions for recirculation control are no longer fulfilled 10 At an activated alarm configured with the extra function of stopping the unit on activation The unit will restart on resetting of the alarm Start of the unit will run according to the following sequence If the controller is configured for water heating and has an outdoor temperature sensor and the outdoor temperature is below 3 C the heating valve is opened and the heating circulation pump is started If the controller is configured with a heat exchanger and has an outdoor temperature sensor and the outdoor temperature is below 15 C the heat exchanger will be run at 100 capacity for a pre set time Signals for outdoor air and exhaust air dampers are activated The extract air fan or the pressure control of the extract air fan will be started after a prest time The supply air fan or the control of the supply air pressure will be started after a preset time Thereafter temperature control according to the configured control mode is started Electric heating if configured is not started until a run signal from the supply air fan or flow switch has been received And not yet activated pumps will be started After a pre set delay the alarm handling system is activated The unit is in normal running mode P100013557 flexotron80
24. coil pump on 34 Reference potential for analogue inputs Al 14 DI6 Filter monitor 33 Al1 Outside temperature 15 DI7 Not used 32 Al2 Supply air temperature 16 DI8 Return air fan on 31 E Reference potential for analogue inputs Al 30 AI3 Frost protection sensor 17 Reference potential for analogue outputs AO 29 Al4 Return air temperature 18 AO1 Y1 actuator for heater 19 AO2 Y2 actuator for HRec 28 E Reference potential for universal inputs Ul 20 AO3 Y3 actuator for cooler 27 UI CO2 sensor 21 AO4 Supply air fan 26 Ul2 Setpoint for room temperature 22 AO5 Return air fan 25 Reference potential for universal inputs UI 24 UIS Not used 23 Ul4 Not used P100013557 31 175 SAUTER Installation and wiring flexotron800 4 4 Wiring diagram RDT828 Configuration 828 cascade amp humidity See also picture of terminal positions on page 21 LS Power supply 24 V AC 15 50 60 Hz 1 D RS485 Modbus not with web TCP IP or 24V DC models MM 2 D Earth conductor 3 C IE 43 24 V 24 V DC Reference point for digital inputs DI 4 E 42 LS Reference point for digital outputs DO 41 DO1 Heating coil pump 40 DO2 Supply air fan level 1 39 DO3 Supply air fan level 2 38 DO4 Collective alarm 9 DI1 External OFF switch 37 DO5 Cooling demand 10 DI2 Frost protection facili
25. digital outputs Exchanger 3 pos actuator increase and Exchanger 3 pos actuator decrease The circulation pump digital output Start stop circulation pump liquid exchanger is started as soon as the actuator control signal exceeds 0 1 V and is stopped when the valve has been closed for more than 5 minutes De icing De icing is activated either when the digital input signal De icing exchanger is activated or when the value of the analogue input Deicingtemp falls below the de icing limit 3 C It is deactivated when the digital input is reset or the analogue input rises above the limit value plus a settable differential On de icing A PI controller compares the de icing setpoint with the signal De icing Exchanger The lesser of the output signal from this controller and the output from the ordinary controller is used as output to the actuator Outdoor temp control of exchanger Instead of using Y2 for analogue control of the heat exchanger it can be set to run on off against outdoor temperature The function controls a digital output Exch control which is activated when the outdoor temperature falls below a set value 6 1 4 4 Mixing dampers Control The analogue output signal Exchanger Y2 or the two digital output signals Exchanger 3 position increase and Exchanger 3 position decrease control two dampers for gradual mixing of outdoor air and recirculated air In this mode
26. end switch monitoring must change again to indicate that all the dampers are back to their normal positions If not an alarm will be triggered The controller can be configured to stop the air handling unit during the damper testing All dampers must be wired to the same output in order to get correct results The fire alarm input can be configured as normally closed or normally open In and outputs DO Outdoor air damper DO Exhaust air damper DO Fire damper DI Fire alarm DI Fire damper end switch monitoring 6 7 Extended running and External switch The digital inputs for extended running can be used to force the unit to start alt hough the timer says the running mode should be OFF Normal running always takes precedence over reduced speed Extended Operation Normal takes precedence over the timer output for reduced speed For 2 speed fans and pressure flow controlled fans there are inputs for normal speed and reduced speed The unit will run for the set time If the running time is set to 0 the unit will only run as long as the digital input is closed The signal External switch will stop the unit even if the timer or one of the signals Extended Operation Normal or Extended Operation Reduced says it should stay in running mode In and outputs DI Extended Operation Normal DI Extended Operation Reduced DI External switch 72 175 P100013557 flexotron800 SAUTER Functional des
27. is the opposite of the desired 18 1 4 Analogue outputs 128 175 Analogue outputs are 0 10 V DC Analogue outputs can be set in run mode AUTO MANUAL or OFF P100013557 flexotron800 S AUT E R Configuration 18 1 5 Digital outputs Digital outputs can be set in run mode AUTO MANUAL ON or MANUAL OFF 18 2 Sensor settings Ni1000 setpoint devices can be connected to function as outdoor and room temperature sensors Alternatively 0 10 V transmitters can also be used If any of the sensors are set to 0 10 V the sensor can be scaled using the right arrow key on the controller 18 3 Control function There are 8 different control functions to choose from a Supply air control N Outdoor temperature compensated supply air control o Cascaded room temperature control A Cascade connected extract air temperature control P100013557 129 175 ws AUT E R flexotron800 Configuration 5 Outdoor temperature dependent switching between outdoor compensated supply air temperature control and room temperature control 6 Outdoor temperature controlled switching between Outdoor temperature compensated supply air control and Cascade connected extract air temperature control 7 Outdoor compensated room temperature control 8 Outdoor compensated extract air control For detailed description of the control modes see section 6 1 2 Control modes
28. of a modulating recirculation air damper In cases where Y4 Extra sequence controls a water heater battery frost protection control may be activated A change over signal can also be configured Y1 Heating Y3 Cooling It is also possible to split one of the three analogue outputs Heating Heat exchanger or Cooling into two equal parts if an additional output function is desired Y4 Extra sequence Y5 Extra sequence Humidity control Extra controller valve and Y1 Heating Y3 Cooling can also be split There is also a pulse width modulated digital output Heating PWM Its period time is settable with a default setting of 60 s Example With a controller output of 50 and a period time of 60 s the output will be on for 30 s and off for 30 s With a controller output of 25 the output will be on for 15 s and off for 45 s 1 Supply air control The supply air temperature is kept at the setpoint value by controlling the output signals for Heating Y1 Exchanger Y2 Cooling Y3 Extra sequence Y4 and Extra sequence Y5 A single PI control loop is used The setpoint value is set using the front panel or alternatively using an external setpoint device Alarms which are activated when the supply air temperature is too high or too low are active Alarm for control offset of the supply air temperature is active 45 175 SAUTER Functional description 46 175 flexotron800 2 Outdoor te
29. off Use this menu to log off from the present level to the basic no log on level 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 See also the section 18 31 6 Automatic logoff It is possible to remove the automatic logoff see 9 4 below 9 3 Change password As default flexotron800 comes with the following passwords for the different levels Admin 1111 Service 2222 Operator 3333 Normal 5555 You can only change the password for log on levels lower or equal to the presently active level i e if you are logged in as Admin you can change all passwords but as Operator you can only change the Operator and Normal passwords There is no point in changing the Basic password since access to that level is granted automatically to all users O Do not set the password for Admin to the same value as the password for a lower level since this will prevent access to the Admin level Forgotten your password If the password for Admin has been changed and then lost a temporary password can be obtained from SAUTER This code is date dependent and only valid for one day 84 175 P100013557 flexotron800 S AUTE R Access rights 9 4 Change password to remove automatic logoff If you want to remove the automatic logoff change the password of the desired level to 0000 After changing the password the level will always be ac
30. or binary Step controller Cooling activation levels for sequential control For binary control the activation levels are calculated by the controller depending on the number of steps involved 143 175 SAUTER Configuration flexotron800 Control parameters Chiller groups is used to calculate activation levels for binary control Hyst is the switching differential used for each step when running binary control When DX cooling is used in conjunction with pressure controlled or flow controlled fans it is possible to block DX cooling if the supply air fan control signal falls below a preset values The blocking level is individually settable for each DX cooling step For a more detailed description see section 6 1 2 Control modes 18 25 3 Step controllers Change over 18 26 Recirculation 144 175 The digital output signals Heating cooling step 1 Heating cooling step 2 and Heating cooling step 3 are used for step controllers during Change over control see section 6 1 13 Change over They have the same functions as other step controller outputs but are set to either heating or cooling depending on whether heating or cooling is required In other words when heating is active they will follow the settings for Heating 1 3 and when cooling is active they will follow the settings for Cooling 1 3 Recirculation is a function for distributing the air in the room using the supply air
31. reversed to give increasing recovery on increasing cooling demand The function also activates the heating function Free heating if heating is required and the outdoor temperature is higher than the extract air temperature outdoor air will primarily be used Output signals 100 Controller signal 0 Cooling i Exchanger i P100013557 57 175 SAUTER Functional description 6 1 9 Enthalpy control flexotron800 In and outputs Al Outdoor temperature sensor Al Extract air sensor Calculating the enthalpy means to calculate the energy content of the air taking into consideration both the temperature and the air humidity The value is given in energy per kilogram air kJ kg If enthalpy control is configured the enthalpy is calculated both indoors and outdoors If the enthalpy is higher outdoors than indoors the recirculation damper will be overridden to increase the recirculation The function is not active when using free cooling in this case outdoor air is used for cooling the room instead For the enthalpy calculation to be made four sensors are required In and outputs Al Outdoor temperature sensor Al Outdoor humidity sensor Al Room Extract air temperature sensor Al Room humidity sensor 6 1 10 Heat exchanger efficiency monitoring 58 175 General The function calculates the heat exchanger temperature efficiency in percent when the output signal to the exchanger is higher than 5 and the outdoor tem
32. temperature control 8 Outdoor compensated extract air control The supply air temperature controller is reverse acting i e the output will increase for decreasing temperature The controller is a Pl controller with settable P band and I time In the first mode the temperature at the supply air sensor will be constantly kept at the user setpoint value In the second mode the supply air temperature setpoint is adjusted depending on the outdoor temperature In modes three and four the supply air is controlled as part of a cascade controller together with the room extract temperature controller The room extract temperature offset will dictate the supply air temperature setpoint Mode five and six vary according to the outdoor temperature Outdoor temperature compensated supply air control as in mode two in winter and cascaded room control or cascaded extract air control in summer as in modes three or four The switch over temperature is settable In applications with mixing dampers instead of heat exchanger the signal for the damper control will be reversed compared to the signal for heat exchanger control i e decreasing signal on increasing heat demand This is done automatically on configuring the exchanger output dampers The heater can be either a hot water heater battery or an electric heater 43 175 S AUTE R flexotron800 Functional description Outputs The supply air controller output is split between one or more of
33. the analogue control outputs 0 10 V DC 2 10 V DC 10 0 V DC or 10 2 V DC P100013557 141 175 S AUT E R flexotron800 Configuration O Even though many manufacturers state 0 10 V DC as control signal for many actuators the actual control signal is more often than not 2 10 V DC Check the actuator documentation carefully If uncertain choose 0 10V DC Although control might be less accurate it will ensure that the valve always can be driven to its fully opened and fully closed positions 18 24 Running time 3 position actuators These parameters have no function if analogue actuators are configured The values are used to determine the control parameters for 3 position actuators It is important to set correct values since incorrect values lead to sloppy control 18 25 Step controllers 18 25 1 Step controller heating Step controller heating can be set to sequential or binary Step controller Heating activation levels for sequential control For binary control the activation levels are calculated by the controller depending on the number of steps involved 142 175 P100013557 flexotron800 SAUTER Configuration Control parameters Heater groups is used to calculate activation levels for binary control Hyst is the switching differential used for each step when running binary control 18 25 2 Step controller cooling P100013557 Step controller Cooling can be set to sequential
34. the extract air fan is not active This requires a digital output to be configured which controls the recirculation damper to open completely so the supply air fan can circulate the air to and from the room The digital output is called recirculation damper 6 1 6 1 Support control heating P100013557 Demand for support control heating is when the room temperature is lower than the start value which is settable 0 to 30 C The fans will run at the preset speed the heater and the heat exchanger are controlled by the supply air temperature controller with the configured max limitation for the supply air FS 30 C as setpoint and the cooling is shut off 0 Support control heating stops when the 55 175 S AUTE R flexotron800 Functional description room temperature rises to the stop value and the minimum run time has been exceeded or the running mode changes to ON 6 1 6 2 Support control cooling Demand for support control cooling is when the room temperature is higher than the start value which is settable 20 to 50 C The fans will run at the preset speed the heater and the heat exchanger are shut down 0 and the cooling is controlled by the supply air temperature controller with the configured minimum limitation FS 15 C as setpoint Support control cooling stops when the temperature falls below the stop value and the minimum run time has been exceeded or the running mode changes to ON 6 1 7 Free coo
35. the output blocks Heating Y1 Exchanger Y2 and Cooling Y3 Each of these output blocks can be bound to either an analogue 0 10 V DC output or to two digital 3 position increase decrease outputs Each output block has two parameters for setting the control range Heating Controller Output signal HCOut at which the output should be 0 Heating Controller Output signal HCOut at which the output should be 100 These settings are used to establish the output activation order and to split the P band between the outputs Example 0 Cooling at HCOut 30 100 Cooling at HCOut 0 0 heat exch at HCOut 32 100 heat exch at HCOut 50 0 Heating at HCOut 54 100 Heating at HCOut 100 44 175 P100013557 flexotron800 6 1 2 Control modes P100013557 SAUTER Functional description In addition to these three it is possible to connect two additional anologue output signals for control of optional sequences Y4 Extra sequence and Y5 Extra sequence Y4 Extra sequence and Y5 Extra sequence are both set in the same way as above It is also possible to select whether Y4 Extra sequence should be affected by the enthalpy control and or the cooling recovery A change over signal can also be configured Y1 Heating Y3 Cooling 0 at HCOut 0 HCOut Heating Controller Output 100 at HCOut 0 HCOut Heating Controller Output Y4 Extra sequence can also be used for control
36. the output signal decreases with increasing heat demand C02 If demand controlled ventilation see 6 4 10 Demand controlled ventilation is activated in combination with mixing dampers and the CO2 value rises above the setpoint value the dampers will let in more outdoor air The function is controlled by a Pl controller Factory settings P band 100ppm and I time 100 seconds These values can only be changed in CASE flexotron CO2 VOC control can be used on Y2 Exchanger or Y4 Extra sequence The control is selectable for use on Y2 Y4 or on both outputs Minimum limit An outdoor air minimum limit for can be set using the front panel The limit value is settable between O and 100 P100013557 51 175 SAUTER Functional description 6 1 5 Types of chillers flexotron800 In and outputs Plate Botating Liquid Dampers Al Al Al Al Outdoor temp sensor optional outd temp start DO DO DO DO Activate exchanger optional outd temp start Al Al De icing sensor optional DI DI De icing signal optional DI Rotation sentinel optional Start delay exchanger This function delays the exchanger start at start up of the unit 100 exchanger output at start up After the delay described above the exchanger output will be 100 during the set time 6 1 5 1 Step controller Heating DX cooling 52 175 As alternative or complement to the above mentioned analogue control heating and cooling can be activated in steps
37. the unit is in running mode the heating valve is controlled by the analogue output Y1 Heating or by two digital outputs Heating 3 pos actuator increase and Heating 3 pos actuator decrease Frost protection The heater return water temperature is measured using the analogue input Frost prot temp Low temperatures will generate an internal proportional signal that is used to force the heating valve open thereby preventing freeze up of the heater The internal signal Internal signal will begin to rise as the frost protection temperature falls below Alarm level Prop Band in order to reach 100 output when the signal has fallen to Alarm level When Internal signal reaches 100 or the digital input Deicing Heat exchanger is activated the unit is shut down the heating output is set to completely open mode and an alarm is activated The unit is restarted when the alarm has been acknowledged and the temperature for the frost protection sensor has risen above Alarm limit frost P Band Frost protection control is available on Y1 Heating Y4 Extra sequence or on both Y1 and Y4 The frost protection alarm level is set in the menu Settings Alarm settings Alarm limit Internal signal Prop band 100 E 0 7 Alarm level Frost protection sensor Shutdown mode If frost protection is activated the controller will go into Shutdown mode when th
38. time and date are set In the fourth menu the running time for normal speed Monday Friday is set In the fifth menu the running time for normal speed Saturday Sunday and holiday is set If 2 speed fans or pressure flow controlled fans have been configured the corresponding times for reduced speed will be displayed in the sixth and seventh 169 175 SAUTER Changing the battery flexotron800 The last menu is used to turn off the wizard and the flexotron800 will switch to normal running mode The selected values will be used The wizard will not be shown again during further use 21 2 Energy calculation The total energy consumption of the air handling unit can be obtained by internally calculating the various partial outputs of system components By combining the various outputs of heaters coolers fans etc current power consumption is calculated based on their combined output 21 3 SFP Specific Fan Power 170 175 If fans are used that are controlled by frequency converters connected via Modbus and which also supply information on motor output the flexotron800 is capable of calculating SFP using the following formula Extra pressure transmitter supply air is always used to measure flow if connected Otherwise SAF Pressure will be used or alternatively SAF Pressure 2 if fan control is Frequency control SAF with EAF flow control Power loss as a percentage of the frequency con
39. transmitter SAF Pressure transmitter EAF Pressure transmitter 2 SAF Extra pressure transmitter SAF Extra EAF Pressure External flow setpoint Frequency converter SAF Frequency converter EAF In applications with varying occupancy the fan speeds or mixing dampers can be controlled by the air quality as measured by a CO2 sensor You can choose to activate the function 1 Always 2 Only when the running mode is On 3 Only when the running mode is Off When the function is activated and combined with pressure controlled fans and the CO2 value rises above control value one the fans will start at reduced speed if they are not already running Should the CO2 value continue to rise the fan speed will also increase until the CO2 value reaches control value two at which point the fans will be running at normal speed The fans will stop when the CO2 value falls 160 ppm below control value one 68 175 P100013557 flexotron800 YS AUTE R Functional description Narmal Low ve Y 2g FD Sg Y Ze Y COn percentage a o Bo a ga a 22 7 ce i g 2 g ew e ai So v Ie o BY 2 BR 3 5 a mo lt i gt T gt a P E S 3 8 E i 5 E B hd 154 Xx st When used with 2 speed fans they will start using reduced speed when the CO2 value rises above control value one and switch to normal speed when the CO2 value reaches control value two The fans will stop when the CO2 value falls 160 ppm below control v
40. 0 7 4 Stop sequence P100013557 SAUTER Starting and stopping the unit Stopping of the unit will run according to the following sequence 1 Deactivation of the alarm handling system 2 Electric heating if configured is shut down 3 After individually set delay times the fans are stopped 4 Outdoor air and exhaust air dampers are shut down 5 Actuator signals are set to zero and the pumps are stopped 6 If shutdown mode is configured it will be activated In order to maintain an acceptable supply air temperature as long as possible the heat exchanger will continue to run during the stop sequence until everything else is stopped TARTAS S AUTE R flexotron800 78 175 P100013557 flexotron800 SAUTER Display LEDs and buttons 8 Display LEDs and buttons 8 1 Display 8 2 LEDs 8 3 Buttons P100013557 This section is applicable to controller flexotron800 units with display and buttons but also for external displays RDB800 which can be connected to flexotron800 units without display and buttons The display has four rows of 20 characters and is backlit The illumination is normally dimmed but is activated as soon as a button is pressed The illumination will be dimmed again after a period of inactivity There are two LEDs on the front The alarm LED marked with the U symbol The write enable LED marked with the 4 symbol The four LEDs placed next to the upper terminal strip will be described
41. 00 ID number not to be confused with its serial number is displayed 19 4 Language When the start menu is displayed pressing the RIGHT button three times will display a menu 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 flexotron800 via CASE flexotron has been reloaded with a newer program revision than the factory revision the 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 19 5 Indication LEDs Status indication can be found in the upper left corner of the master controller For controllers with display the alarm indication and change mode LEDs are located in the keypad area Status indication Designation Colour Description P1 RxTx yellow green Interface 1 send receive P2 RxTx yellow green Interface 2 send receive TCP IP TCP models yellow green Green Connected to other network equipment Blinking green Network traffic Blinking yellow For identifying P B Power Battery green red Power on Battery error Controllers with built in display QUA red Alarm indication aii be Yellow Change mode 162 175 P100013557 flexotron800 20 Menu structure P100013557 Running Mode Running m
42. 00 YS AUTE R About flexotron800 RoHS This product conforms to the Directive 2011 65 EU of the European Parliament and of the Council Inputs Analogue inputs Al Configurable as 0 10 V DC or Ni1000 12 bit A D Digital inputs DI Potential free connection Universal inputs Ul Can be used as either analogue or digital input see information above Outputs Analogue outputs AO Configurable as 0 10 V DC 2 10 V DC 10 0 V DC or 10 2 V DC 8 bit D A short circuit protected Digital outputs DO Mosfet outputs 24 V AC DC constant 2 A Not short circuit protected Max 8 A total Optional TCP models Replaces the RS485 Port 1 With 2 ports One serial port and a TCP IP port External operating unit RDB800 Used for all flexotron800 Position of the terminals on flexotron 800 a oOo gt DD o r N EC 3d re a de S oaaqow Di z A V 4 V HR TZ iQy is OOO O O Bob AS485A P 55650055 99298 flexotronBO0O WA WSAUTER a N oO x wo o HELA GES EEE SE Les LS 2SS5 45 s TCP IP is N bard o o foe amp o tO t a N o o co N o To a N a ise N oO es a a oO oO N N N N N N N P100013557 21 175 S AUTE R flexotron800 22 175 P100013557 flexotron800 4 Installation and wiring 4 1 Installation SAUTER Installation and wiring The controller flexotron800 can be mounted in a DIN standard casing minimum 9 modules on a DIN rail in a cabinet or
43. 1 Cooling P1 Exchanger SAF frequence EAF frequence Heat start Cool start Exch start 29 175 SAUTER Installation and wiring 30 175 v Description Exhaust air close off damper Fresh air close off damper Recirculation damper Heating 3 position actuator increase Heating 3 position actuator decrease Exchanger 3 position actua tor increase Exchanger 3 position actua tor decrease Cooling 3 position actuator increase Cooling 3 position actuator decrease Step controller heating step 1 Step controller heating step 2 Step controller heating step 3 Step controller heating step 4 Step controller cooling step 1 Step controller cooling step 2 Step controller cooling step 3 Extra time channel 1 Extra time channel 2 Extra time channel 3 Extra time channel 4 Extra time channel 5 Humidity External controller active Heating cooling step 1 Heating cooling step 2 Heating cooling step 3 Free cooling operation Pretreatment Split sequnce active Run indication Pulse modulated heating output CASE flexotron Exhaust Air Damper Outdoor Air Damper Recirculation Air Damper Heating Increase Heating Decrease Exchanger Increase Exchanger Decrease Cooling Increase Cooling Decrease Heat Step 1 Heat Step 2 Heat Step 3 Heat Step 4 Cool Step 1 Cool Step 2 Cool Step 3 Time Channel 1 Time Channel 2 Time Channel 3 Time Channel 4 Time Channel 5 Humidity DeHumidity Extr
44. 2 Heat Pump Indication Exchange Pump Indication Cooling Pump Indication Fire Alarm Fire Damper Indication Extended Operation Normal Extended Operation Reduced External Switch External Alarm Flow Switch Exchange Rotation SAF Indication EAF Indication Deicing Frost Protection Overheated Electric heater Recirculation Change over flexotron800 Display Extra EAF Pressure Ext sp flow Filter guard1 Filter guard2 Display Not used Filter guard1 Filter guard2 P1 Heating P1 Exchanger P1 Cooling Fire alarm Fire damper ind Ext run 1 1 Ext run 1 2 External switch External alarm Flow guard Rot sent exch SAF Ind EAF Ind De icing Frost prot Overheatprotection Recirculation Change over The universal inputs on RDT828 can be individually configured as either analogue inputs using any of the analogue input signals above or as digital inputs using any of the digital inputs above P100013557 flexotron800 P100013557 Analogue output signal v Description Inactive output Y1 Actuator Heating Y2 Actuator Exchanger Y3 Actuator Cooling Frequency converter supply air fan Frequency converter extract air fan Actuator Humidity control Split of any one of temp outputs Y1 Y2 Y3 or Y1 Heating Y3 Cooling outputs Extra controller Y1 Heating Y3 Cooling Change over output Y4 Extra Sequence Also used for control of recirculation air damper 0 10V Y5 Extra Sequenc
45. 3557 If the flexotron800 is intended to control of one or two of the Vacon NXL Lenze SMV Omron V1000 Emerson frequency converters Modbus communication via port two is utilised Modbus Vacon Vacon For additional settings for frequency converters see appendix at the end of this document 123 175 S AUTE R flexotron800 Expansion model 17 2 2 Expansion controllers Communication between the master and expansion units takes place via prioritary bus The slave controllers will be given the addresses 241 1 and 241 2 ELA PLA respectively 124 175 P100013557 flexotron800 S AUT E R Configuration 18 Configuration Start by logging on as Admin See section 9 Access rights Move the marker using the DOWN and UP buttons until it is opposite the menu Configuration and press RIGHT The configuration main menu is shown different menus are visible depending on the configured inputs and outputs A complete overview of the menu structure is available in section 20 Menu structure P100013557 125 175 ws AUT E R flexotron800 Configuration 18 1 Inputs and outputs General Free configuration Any control signal can be bound to any in and output the only restriction being that digital signals cannot be bound to analogue inputs and vice versa It is up to the user doing the binding to make sure that activated functions are bound to app
46. 4 2 2 Inputs and outputs 24 175 The list of input and outputlists in section 4 2 3 is a handy instrument to help you keep track of which inputs and outputs you will need to configure Analogue inputs Analogue inputs must refer to an protective earth terminal placed in the same terminal block as the input being wired Analogue inputs can depending on the configuration be used for either Ni1000 temperature sensors or for 0 10 V DC analogue input signals for example from a pressure transmitter Digital inputs Digital inputs must refer on terminal 24 V Digital inputs may only be wired to voltage free contacts Any external voltage applied to a digital input may harm the unit The input signal can be set to either NO or NC Universal inputs A universal input can be configured to act as either an analogue input or as a digital input A universal input configured as an analogue input can depending on the configuration be used for either Ni1000 temperature sensors or for 0 10 V DC analogue input signals for example from a pressure transmitter Universal inputs configured as an analogue input must refer to an protective earth terminal placed in the same terminal block as the input being wired A universal input configured as a digital input must just like other digital inputs refer to terminal 24 V It may only be wired to voltage free contacts P100013557 flexotron800 P100013557 SAUTER Installation and wiring
47. 4 V DC Reference for digital inputs DI 4 E 42 LS Reference for digital outputs DO 41 DO1 40 DO2 34 Reference pole for analogue inputs Al 9 Dit 33 Alt 10 DI2 32 Al2 11 DI3 17 E Reference pole for analogue outputs AO 18 AO1 P100013557 37 175 S AUTE R flexotron800 38 175 P100013557 flexotron800 5 Commissioning 5 1 General 5 2 How to do it 5 2 1 Option 1 P100013557 SAUTER Commissioning Before the controller flexotron800 can be used all inputs and outputs must first be configured as well as all relevant parameters All commissioning can be done using the flexotron800 front panel display and buttons or using the external display unit RDB800 CASE flexotron The best way however is to configure the regulator by using CASE flexotron CASE flexotron is a PC based configuration program specially developed to simplify the commissioning of the flexotron800 series When using CASE flexotron the whole configuration and all settings can be done on the computer and then be downloaded to the flexotron800 An infinite number of different configurations can be saved in computer memory for later use A communication cable is required in order to configure flexotron800 with CASE flexotron The controller flexotron800 must be powered up and the application selected in order for it to be configured For configuration using CASE flexotron see the CASE flexotron manual For
48. Analogue inputs and digital outputs are shown here as examples Analogue inputs Digital outputs P100013557 89 175 S AUTE R flexotron800 90 175 P100013557 flexotron800 11 Temperature P100013557 SAUTER Temperature 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 The below menus are available providing the corresponding input has been activated Setpoints are available with a separate value for reduced speed This is achieved using a temperature offset when the unit runs in reduced speed The temperature is available in either Celsius C or Fahrenheit F Setpoint Control mode 1 Supply air control Submenu Setpoint Control mode 2 Outdoor compensated supply air control Control mode 5 Outdoor temperature dependent supply air or room temperature control Control mode 6 Outdoor temperature dependent supply air or extract air control Submenu Setpoint curve In control modes five and six the setpoint relationship is used when supply air control is active Use the eight breakpoints to generate a setpoint outdoor temperature relationship 91 175 S AUT E R flexotron800 Temperature Both the outdoor and supply air temperatures are changeable for the curve In between values are calculated using straight lines betwe
49. Analogue or digital output in manual mode Time for service Y4 Extra sequence in manual control Restart blocked due to earlier power failure Y5 Extra sequence in manual control Filter guard pressure switch activated High temperature Extra sensor 1 Low temperature Extra sensor 1 High temperature Extra sensor 2 Low temperature Extra sensor 2 High temperature Extra sensor 3 Low temperature Extra sensor 3 High temperature Extra sensor 4 Low temperature Extra sensor 4 High temperature Extra sensor 5 Low temperature Extra sensor 5 149 175 S AUT E R flexotron800 Configuration 18 29 Communication 18 29 1 Modbus communication The flexotron800 can be connected to a network for Modbus communication If Modbus communication is activated you can set the address etc Modbus communication takes place using 1 stop bit O Only one stop bit can be used Slave For connection to CASE flexotron and a Modbus SCADA system Expansion unit In order to connect additional I Os in and outputs to the flexotron800 port 1 and 2 should be set as an expansion unit only flexotron800 controllers can be connected It is possible to connect 2 expansion units giving a maximum number of 28 3 84 inputs outputs The expansion units must have the addresses 241 1 and 241 2 respectively ELA PLA To initiate the expanded controllers select Expansion unit at start up see below If the controller does not contain program version 3 0 o
50. F with flow control SAF P100013557 131 175 S AUT E R flexotron800 Configuration 18 4 4 Crosswise interlock between fans Crosswise interlock means that if one of the fans stops running the other fan will automatically stop as well 18 5 Extra control circuit The extra control circuit can be configured to be either constantly active or to be active only when the regular control circuit The extra control circuit can be configured to be either a heating or a cooling circuit 18 6 Extra sequence Y4 Extra sequence Y4 can be configured to one of the following alternatives Active Active with cooling recovery Active with enthalpy control and Active with both cooling recovery and enthalpy control 132 175 P100013557 flexotron800 SAUTER Configuration 18 7 Extra sequence Y5 18 8 Heating coil 18 9 Exchanger P100013557 Extra sequence Y5 can be configured to Active or Not active The heater can be set to Water Electric Water Electric or Not used For detailed description of heater alternatives see section 6 1 3 Heater types The heat exchanger unit can be set to one of the following alternatives e Plate exchanger e Rotating exchanger e Liquid connected exchanger e Mixing dampers e Not connected e Damper limiting for minimum outdoor air percentage is settable 0 100 In the submenu parameters for outdoor tempera
51. In control modes five and six there is a submenu for setting of the change over outdoor temperature 18 4 Fan control Choose between Single speed Two speed Pressure control Flow control Frequency manual fixed output Frequency external control SAF with EAF slave or SAF with EAF flow control For detailed description of fan control alternatives see section 6 4 Fan control 18 4 1 Flow control If flow control has been configured there is a submenu for setting of calculation parameters for conversion of pressure to flow There are two menus one for SAF and one for EAF For more detailed description see section 6 4 1 Pressure control 130 175 P100013557 flexotron800 S AUT E R Configuration 18 4 2 SAF with EAF slave EAF with SAF slave If fan slave operation has been configured there is a submenu for setting the CAV factor a factor which determines the slave fan output in relation to the output of the controlling fan For more detailed description see section 6 4 5 SAF with EAF slave 18 4 3 SAF with EAF flow control EAF with SAF flow control If fan slave operation and flow control has been configured there are submenus for setting the flow calculation factors for SAF and EAF and the CAV factor for SAF EAF For more detailed description see section 6 4 7 Frequency control SAF with flow control EAF 6 4 8 Frequency control EA
52. RH When halfway to 80 RH i e when at 70 RH half the output signal will be damped If the humidity in the duct still reaches 80 RH the entire output signal will be damped An analogue output is used to control a dehumidifier The output will increase on increasing humidity A digital output can also be used to start a dehumidifier 61 175 S AUTE R flexotron800 Functional description 6 3 3 Humidification dehumidification An analogue output is used to control a humidifier The output will increase on decreasing humidity The cooling output Y3 will be activated for dehumidification through condensation The output will increase on increasing humidity This signal overrides the cooling signal from the temperature controller so the output can be activated for dehumidification even if the temperature controller demand is zero For good temperature control when using cooling for dehumidification it is important that the cooler is placed first in the air stream so that the exchanger and heater can be used to reheat the air after dehumidification 6 3 4 Digital humidity signal A digital output signal Dehumidification Humidification can be used for on off control of humidifiers dehumidifiers The output signal has an activation value and a deactivation value which are connected to the humidity controller output The signal is activated when the humidity controller output rises above the set activation value and is deactivate
53. SAUTER SAUTER flexotron800 V2 Ventilation V3 3 manual P100013557 P100013557 S AUTE R flexotron800 2 175 P100013557 flexotron800 Content P100013557 Generell notes 1 1 Disclaimer 1 2 Trademarks 1 3 Safety information 1 3 1 Mandatory note 1 3 2 General note 1 4 Notes for using the manual 1 4 1 Markups About the manual 2 1 Further information About flexotron800 3 1 News in version 3 3 3 2 Application choice 3 2 1 Additional menu options 3 3 Select language 3 4 Ventilation application 3 5 flexotron800 hardware overview 3 6 flexotron800 model overview 3 7 Technical data Installation and wiring 4 1 Installation 4 2 Wiring 4 2 1 Supply voltage 4 2 2 Inputs and outputs 4 2 3 Input and output lists 4 3 Wiring diagram RDT828 4 4 Wiring diagram RDT828 4 5 Wiring diagram RDT815 4 6 Wiring diagram RDT815 4 7 Wiring diagram RDT808 4 8 Empty wiring diagram RDT828 4 9 Empty wiring diagram RDT815 4 10 Empty wiring diagram RDT808 Commissioning 5 1 General 5 2 How to do it 5 2 1 Option 1 5 2 2 Option 2 Functional description 6 1 Temperature control 6 1 1 General 6 1 2 Control modes SAUTER Content oo oO 10 10 11 11 13 13 14 15 16 16 19 19 20 23 23 24 24 24 27 31 32 33 34 35 36 37 37 39 39 39 39 40 43 43 43 45 3 175 S AUTE R flexotron800 Content 6 1 3 Heater types 48 6 1 4 Heat exchangers 50 6 1 5 Types of chillers 52
54. Stop conditions 75 4 175 P100013557 flexotron800 P100013557 7 3 Start sequence 7 4 Stop sequence 8 Display LEDs and buttons 8 1 Display 8 2 LEDs 8 3 Buttons 8 4 Navigating the menus 8 4 1 Change parameters 9 Access rights 9 1 Log on 9 2 Log off 9 3 Change password 9 4 Change password to remove automatic logoff 10 Running mode 10 1 Running mode unit 10 2 Selected functions 10 3 Alarm events 10 4 Inputs Outputs 11 Temperature 12 Air control 12 1 Pressure control SAF and EAF 13 Humidity control 14 Time settings 14 1 Time Date 14 2 Timer Normal speed 143 Timer Reduced speed 14 4 Extended running 145 Timer outputs 1 5 14 6 Holidays 15 Manual Auto 16 Settings 16 1 Control temp 16 2 Control pressure 16 3 Control flow 16 4 Humidity control 16 5 Control Extra unit 16 6 Alarm settings 16 6 1 Alarm limits 16 6 2 Alarm delays 16 6 3 Restore alarm SAUTER Content 76 77 79 79 79 79 80 81 83 83 84 84 85 87 87 87 88 89 91 99 99 105 107 107 108 109 109 110 110 111 115 115 117 117 118 118 118 118 120 122 5 175 SAUTER Content 6 175 flexotron800 16 7 Save and restore settings 122 17 Expansion model 123 17 1 Ports 123 17 2 Wiring 123 17 2 1 Vacon Lenze Omron Emerson LS EBM frequency converters123 17 2 2 Expansion controllers 124 18 Configuration 125 18 1 Inputs and outputs 126 18 1 1 Analogue inputs Al 126 18 1 2 Dig
55. T815F222 No Yes Yes Op Yes No N N Mm ma Oo N LL LL lo ite so e E a a Ac x 4 4 4 4 3 3 4 4 Yes Yes Yes Yes No Yes Op Op No No Yes Yes RDT828F012 Yes No No Op Yes No RDT828F212 Yes No Yes Op Yes No SAUTER About flexotron800 N N N N o N LL LL N N E E m m oc Ac 4 4 8 8 4 4 5 5 Y 7 No No Yes Yes No Yes Op Op Yes Yes No No RDT828F032 Yes Yes No Op No Yes RDT828F232 Yes Yes Yes Op No Yes Ul universal inputs can be configured to function as either analogue input or digital input Op Option All flexotron800 V2 generation controllers support external displays flexotron800 model overview Model with display RDT808F212 RDT815F212 RDT828F212 RDT815F222 RDT828F222 RDT815F232 RDT828F232 Model without display RDT808F012 RDT815F012 RDT828F012 RDT815F022 RDT828F022 RDT815F032 RDT828F032 Description Standard controller with RS485 port Controller with TCP IP port Controller with TCP IP port and RS485 port 19 175 SAUTER About flexotron800 3 7 20 175 Technical data Protection class Display LEDs Yellow Red Clock Power supply flexotron800 IP 20 when installed 4 lines of 20 characters Illumination Adjustable parameter Alarm indicator 24 hour system clock with battery backup automatic summer winter changeover 24 V AC 15 50 60 Hz or 21 36 V DC Power
56. The choice of access level determines which menus are shown as well as which parameters can be changed in the displayed menus Admin level gives full read write access to all settings and parameters in all menus Service level gives access to all menus except the submenus Configuration gt In and Outputs and Configuration gt System Operator level gives access to all menus except Configuration The basic level only permits changes in Running mode and gives read only access to a limited number of menus Repeatedly press the Down button when the start up display is shown until the arrow marker to the left of the text list points to Access rights Press the Right button In this menu it is possible to log on to any access level by entering the appropriate 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 83 175 S AUT E R flexotron800 Access rights 9 2 Log
57. a unit active Heat cool step 1 Heat cool step 2 Heat cool step 3 Free cool run Pretreatment Sequence Activate Run indication Heating PWM flexotron800 Display Exhaust air d Outd air damp Recirc damper Heat inc Heat dec Exch inc Exch dec Cool inc Cool dec Heat step1 Heat step2 Heat step3 Heat step4 Cool step1 Cool step2 Cool step3 Timer 1 Timer 2 Timer 3 Timer 4 Timer 5 Humidity ExtraUnitActi HeatCoolStep1 HeatCoolStep2 HeatCoolStep3 Free cool run Pretreatment Split sequence Run ind Heating PWM P100013557 flexotron800 SAUTER Installation and wiring 4 3 Wiring diagram RDT828 Configuration 828 Cascade amp CO2 See also picture of terminal positions on page 21 LS Power supply 24 V AC 15 50 60 Hz 1 D RS485 Modbus not with web TCP or 24V DC IP models MM 2 D Earth conductor 3 C IE 43 24 V 24 V DC Reference point for digital inputs DI 4 E 42 LS Reference point for digital outputs DO 41 DO1 Heating coil pump 40 DO2 Supply air fan variable frequency drive enabled 39 DO3 Return air fan variable frequency drive enabled 38 DO4 Collective alarm 9 DI1 External OFF switch 37 DO5 Cooling demand 10 DI2 Frost protection facility 36 DO6 Not used 11 DI3 Supply air fan on 35 DO7 Not used 12 DI4 Anti icing function 13 DI5 Heating
58. act air controller output signal generates the supply air controller s setpoint value The extract air temperature is kept at the setpoint value by controlling the output signals for Y1 Heating Y2 Heat exchanger Y3 Cooling Extra sequence Y4 and Extra sequence Y5 Two PI loops are used The extract air setpoint value is set using the front panel or alternatively by using an external setpoint device 5 Outdoor temperature dependent switching between supply air temperature control and room temperature control When the outdoor temperature is lower than a settable limit winter outdoor compensated supply air temperature control will be active otherwise summer cascaded room temperature control P100013557 flexotron800 S AUTE R Functional description 6 Outdoor temperature dependent switching between supply air temperature control and extract air temperature control When the outdoor temperature is lower than a settable limit winter outdoor compensated supply air temperature control will be active otherwise summer cascaded room temperature control as in control mode 4 7 Outdoor compensated room temperature control The room temperature can be compensated when the outdoor temperature increases One can for instance imagine accepting a slightly higher room temperature if it is warm outside or conversely a slightly lower temperature if it is chilly This function is included to conserve ene
59. al output Humidification Dehumidification For a detailed description see section 6 3 Humidity control 138 175 P100013557 flexotron800 S AUT E R Configuration 18 17 Exchanger de icing De icing parameters For detailed description of exchanger alternatives see section 6 1 4 Heat exchanger 18 18 Cooling recovery Cooling limit is the difference in temperature between extract air and outdoor air For details see section 6 1 8 Cooling recovery 18 19 Minimum limit dampers For detailed description of exchanger alternatives see section 6 1 4 Heat exchanger 18 20 Enthalpy control For a detailed description see section 6 1 9 Enthalpy control P100013557 139 175 SAUTER Configuration 18 21 External setpoint flexotron800 An external setpoint device can be connected The setpoint device must follow the Ni1000 resistance curve The setting range can be restricted For details see section 6 1 11 External setpoint 18 22 Run indication Motor protection 140 175 Digital input signals are used to supervise fans and pumps They can be configured either for indication of the motor running or for monitoring of motor protection contacts An input configured for run indication should normally be closed during operation Open input when the motor is running e motor control output is activated will generate an alarm For supply air fans and extract air fans there is also a conflict
60. al reduced speed is activated during recirculation via Timer output 5 normal reduced speed gets priority If timer output for normal reduced speed is activated during recirculation via a digital input recirculation gets priority Either a digital output Recirculation damper or an analogue output Y4 Extra sequence can be used as an output signal When Y4 Extra sequence is used the damper will become modulating Recirculation control can be configured as either air circulation temperature control inactive or air circulation with temperature control Only heating only cooling or both heating and cooling Recirculation control has its own setpoint However the other settings are the same as for normal operation i e if normal operation has been configured as room control room control will also be used during recirculation The recirculation setpoint can be configured as constant or offset Constant means that the recirculation setpoint will be used Offset is based on an offset from the supply air setpoint To lower the temperature it is possible to configure free cooling to be used during recirculation if the conditions for free cooling are fulfilled Then the recirculation damper closes the supply and extract air dampers open and the extract air fan starts the supply air fan also starts if it is not already running If the free cooling function is not configured for recirculation control and you want to cool down the supp
61. alue one Narmal E lt Low CO percentage Activation value 1 1 speed 160 ppm u 25 so za ew ie Zo y u Es wN 2 Activation value 1 2 speed Activation value 1 1 specd If demand controlled ventilation is activated in combination with mixing dampers and the CO2 value rises above the setpoint value the dampers will let in more outdoor air The function is controlled by a Pl controller See section 6 1 4 Heat exchangers The function has a settable minimum running time In and outputs Al CO sensors P100013557 69 175 SAUTER Functional description 6 5 Pump control 6 5 1 Heating circuit flexotron800 Digital inputs and outputs can be configured for pump control All the pumps can use run indication with malfunction alarm or an alarm input connected to a motor protection or similar The circulation pump for the heating circuit will always run when the outdoor temperature is lower than a settable value FS 10 C At higher outdoor temperatures the pump will run when the heating output is larger than 0 V If no outdoor temperature sensor has been configured the stop temperature can be set to 0 C Then the pump will only run on heat demand The pump has a settable stop delay The pump will be exercised once daily at 3 p m for one minute or the set shortest running time whichever is the longest 6 5 2 Exchanger circuit liquid connected exchangers 6 5 3 Cooling circu
62. and reduced speed can be configured for each fan Fans that are run with a fixed output signal can also be compensated see the section above In this mode pressure sensors are not needed 6 4 4 Frequency control external control signal Two 0 10 V input signals are used for direct control of frequency controlled fans The signal is received from e g a VAV unit The signal controls the fans 0 100 0 10 V on the analogue output Pressure transmitters are not used in this control mode 6 4 5 Frequency control SAF with EAF slave The rotational speed of the supply air fan is controlled by a pressure transmitter which is placed in the supply air duct The extract air fan does not have a pressure transmitter instead you let the output for the extract air fan follow the control signal for the supply air fan A scaling factor can be added if the characteristics of the extract air fan are not the same as the characteristics of the supply air fan Only pressure control of the supply air fan is possible using this function The extract air fan will start directly at 50 after the start delay Then the heating of the exchanger will work for this operating mode as well When the supply air fan starts the extract air fan will be slave controlled by the supply air flow 6 4 6 Frequency control EAF with SAF slave 66 175 The rotational speed of the extract air fan is controlled by a pressure transmitter which is placed in the extract air du
63. at the CO2 sensor is higher than the preset start condition 6 Recirculation control has been configured and the conditions for recirculation control are fulfilled 7 1 1 Possibility to block automatic restart at power up 7 2 Stop conditions P100013557 The function Automatic restart at power up makes it possible to block automatic restart of the unit at power up At power up the B alarm Restart blocked after power on is generated Once this alarm has been acknowledged the unit will start The unit will be stopped when any of the following conditions are met 1 Timer output for normal speed or timer output for reduced speed are OFF and the signal for extended running is OFF 2 Activated frost protection alarm The unit will restart on resetting of the alarm 3 Activated fire detector if the function has been configured The unit will restart on resetting of the alarm 4 If the unit has electric heating and the supply fan flow switch alarm or the high temperature limit alarm is activated 5 Activation of external switch 6 The unit is stopped manually using the flexotron800 front panel 75 175 SAUTER Starting and stopping the unit 7 3 76 175 Start sequence flexotron800 7 Support control is activated and the present room temperature is higher lower than the pre set stop value support heating cooling Demand controlled ventilation is activated and the value at the CO2 sensor falls
64. com DE EN FR P100013562 Modbus and BACnet communica munication P100013563 tion P100013564 CE Declaration of conformity flexotron800 The information is available for download from Fr Sauter AG website http www sauter controls com de P100013557 11 175 S AUTE R flexotron800 12 175 P100013557 flexotron800 YS AUTE R About flexotron800 3 About flexotron800 The flexotron800 series comprises three model sizes 8 15 or 28 in outputs In each model flexotron800 all applications are loaded in a separate memory area A new feature in version 3 3 are models with two and three communication ports All configuration and normal handling can be done using the display and buttons or using the configuration tool CASE flexotron installed on a PC and connected via a communication cable The controllers are available with or without a front panel display and buttons For all units both with and without display and buttons a separate cable connected terminal RDB800 with display and buttons is available By connecting one two expansion units to port two on these units it is possible to increase the number of inputs and outputs O The 2 and 3 port flexotron800 models are available only on request For more detailed information see chapter 17 Expansion model 3 1 News in version 3 3 e Split of analogue output signal Y1 Heating Y3 Cooling change over e Digital output connected to split sequence e Extra sequence Y5 adde
65. configuration using the front panel there are two ways to go depending on how much help you need e Jump straight to section 8 and 9 Display LEDs and buttons and Access rights e After learning how to use the buttons and menu system connect power to your controller log on as Admin and go to the menu Configuration e For the time being skip the configuration menu In Outputs and start by configuring control functions e Run through the configuration menus in order and set whatever functions and parameters you wish to include Use section 6 of this manual for reference e Keep track of which inputs and outputs you will need To help you there is a list of input and output functions provided in section 4 4 2 3 Input and output list e Finally configure In Outputs e Exit the Configuration menu and go to Settings e Set the control values in Settings 39 175 SAUTER Commissioning 5 2 2 Option 2 40 175 flexotron800 e Set the clock and scheduler functions in Time Settings e Set the control setpoints in temperature and air control as well as in humidity control if humidity control has been configured e Your controller flexotron800 should now be ready to run Read this manual in the order given below The manual has been designed to act as a guide through the commissioning The last chapters of the manual not listed below cover menus and functions that are not used during commissioning
66. consumption 10 VA 4 W DC TCP models 12 VA 5 W DC Start up current Dimensions Housing Mounting Operation Environmental conditions according to IEC 721 3 3 Ambient temperature Ambient humidity Mechanical requirements according to IEC721 3 3 Vibration Shock Transport Ambient conditions according to IEC 721 3 2 Ambient temperature Ambient humidity Mechanical requirements according to IEC721 3 2 Vibration Shock Free fall Storage Ambient conditions according to IEC 721 3 1 Ambient temperature Ambient humidity Battery Type Battery life Warning Battery backup Communication 28 A 2 ms 148x123x58 WxHxD including terminals Euronorm 8 5 modules wide On DIN rail Class 3k5 0 50 C max 95 rh Class 3M3 IEC60068 2 6 Test FC sinusoidal vibration IEC60068 2 27 Test Ea Class 2k3 20 70 C max 95 rh Class 2M2 IEC60068 2 6 Test FC sinusoidal vibration IEC60068 2 27 Test Ea IEC60068 2 27 Test Ed Class 1k3 20 70 C max 95 rh Replaceable lithium cell CR2032 More than 5 years Low battery warning Memory and clock Communication options depend on the selected model Suitable model should be selected for appropriate needs Protocol Interface EMC emission and immunity standard Modbus RTU BACnet IP RS485 TCP IP This product conforms to the requirements of the EMC Directive 2004 108 EC through product standards EN 61000 6 1 and EN 61000 6 3 P100013557 flexotron8
67. cription 6 8 Time switch outputs 6 9 Alarms 6 9 1 Alarm handling 6 9 2 Alarm priorities 6 9 3 Stop function P100013557 Up to five digital time switch outputs can be configured Each timer channel has a separate scheduler with two periods per week day Timer output five can be used to control the function Recirculation See section 18 26 Recirculation In and outputs DO Extra time channel 1 DO Extra time channel 2 DO Extra time channel 3 DO Extra time channel 4 DO Extra time channel 5 Alarms are indicated by the red alarm LED or on the front of the external display All alarms can be monitored acknowledged and blocked using the display and buttons Alarms can be given different priority levels A alarm B alarm C alarm or not active Digital outputs can be bound to act as alarm outputs for A alarms or B C alarms or both A and B C alarms The digital outputs can be inverted so that an inoperative alarm gives a high output and vice versa A and B alarms must be acknowledged to reset C alarms automatically reset as soon as there is no longer a cause for alarm For each alarm there is the possibility of choosing whether activated alarm should stop control or not Automatic restart will take place after removal of the alarm cause and the alarm has been acknowledged For some alarm types such as electric heating high temperature limit and water heating frost protection it would be dangerous to not stop the unit on ala
68. ct Application and press the Right button P100013557 flexotron800 S AUT E R About flexotron800 Move the cursor to the desired application Press the Right button Press OK and change NO into YES Press OK again The most recently loaded ventilation application will now be entered into memory This will take approx 30 seconds The application start screen is displayed 3 2 1 Additional menu options System Information on the flexotron800 model and serial number e MAC address and IP address e Battery status and memory size e Memory status and voltage frequency Communication Communication mode selection Serial e Enables selecting controller address communication speed port mode and routing span TCP IP e Choice of DHCP YES NO e Also enables manual IP address and subnet mask setting before the flexotron800 is initiated Default Gateway and DNS name is also available under this menu e Current subnet mask gateway and DNS name e Main computer status e Main computer IP address e Permit connection to main computer e TCP port routing to serial port 1 or 2 P100013557 15 75 S AUT E R flexotron800 About flexotron800 Time Date e Permits setting the time and date Input Output e Enables In Output reading and writing 3 3 Select language To change languages press the Right button 3 times and then choose a language in the same way you selected an application
69. ct The supply air fan has no pressure transmitter Instead the supply air fan output is made to follow the extract air fan control signal A scaling factor can be added if the supply air fan characteristics are not the same as the characteristics of the extract air fan only pressure control of the extract air fan is possible using this function P100013557 flexotron800 S AUTE R Functional description 6 4 7 Frequency control SAF with flow control EAF The rotational speed of the supply air fan is controlled by a pressure transmitter which is placed in the supply air duct The extract air fan is controlled by the supply air flow in order to achieve a balanced ventilation A pressure transmitter which is placed in the supply air fan cone Pressure transmitter SAF 2 gives a measured value of the present supply air flow A corresponding pressure transmitter is placed in the extract air fan cone and gives a measured value of the extract air flow The supply air flow is the setpoint used for control of the extract air fan A scaling factor can be added if the extract air fan does not have the same characteristics as the supply air fan 6 4 8 Frequency control EAF with flow control SAF The rotational speed of the extract air fan is controlled by a pressure transmitter which is placed in the extract air duct The supply air fan is controlled by the extract air duct flow in order to achieve a balanced ventilation A pressure transmitter
70. d e Temperature dependent air flow compensation has been added It can be set either to affect normal speed or both normal and reduced speed e Air flow compensation depending on controller output one for heating output and one for cooling output e Separate setpoint at reduced speed e Runtime indication as digital output e Outdoor temperature dependent room extract air compensated setpoints e Inverted function on digital out alarm indication e Communication with two LS frequency converters e Extract air fan EAF can now be run during recirculation e Energy calculation e Port 2 has been updated and can now communicate with a SCADA system via Modbus earlier port 2 could only communicate with SAUTER Case flexotron New fan control function Frequency controlled extract air fan with a supply air fan as slave e Possible to change temperature unit from Celsius to Fahrenheit as well as to set flow unit either to m3 h cubic meters per hour or CFM cubic feet per minute e Program date in display date when software version was manufactured e The digital heating output now has a PWM function Pulse Width Modulation New analogue input signal external flow setpoint e Configuration of min max input signal volt for pressure transmitters e Modbus communication with EBM fans e Frost protection on extra sequence Y4 P100013557 13 175 SAUTER About flexotron800 flexotron800 e SFP Specific Fan Power
71. d when the humidity controller output drops below the set deactivation value If a start signal is needed for a cooling unit or a magnetic valve for DX dehumidification the digital output signal Start P1 Cooling should be used In this case the pump stop delay should be set to 0 s Inputs and outputs Al Room humidity sensor Al Duct humidity sensor DO Humidity control output 0 10 V DC DO Dehumidification Humidification 6 4 Fan control General Fans can be 1 speed 2 speed or variable speed via a frequency converter 1 speed fans are controlled using the digital outputs Start SAF Normal and Start EAF Normal 2 speed fans are controlled using the digital outputs Start SAF Normal and Start EAF Normal as well as Start SAF reduced and Start EAF reduced giving normal and reduced speed respectively Variable speed control uses an analogue output per fan for controlling a frequency converter There are two setpoints for each fan Normal and 62 175 P100013557 flexotron800 P100013557 SAUTER Functional description Reduced Pressure or air flow control can be used Variable speed fans can also be configured to be run with fixed output values Compensation curve When running pressure control it is also possible to temperature compensate the pressure Crosswise interlock Crosswise interlock of fans can be configured which e g means that if one fan stops the other fa
72. down period when using electric heating In order to avoid letting in too cold air e g in the winter the heat exchanger will continue to run during the stop delay P100013557 flexotron800 S AUT E R Configuration 18 30 2 Retardation time When switching two speed fans from 1 1 speed to 1 2 speed there is a settable retardation time The same time applies to both fans 18 30 3 Heating at start up and high speed blocking At outdoor temperatures below the set value the heating output will be forced to 100 before start up Two speed fans and pressure controlled fans can be blocked from using high speed at outdoor temperatures lower than the set value This function should not be combined with the function Outdoor compensation of pressure setpoint See section 6 4 10 Demand control ventilation Both functions need an outdoor temperature sensor 18 30 4 Start delay exchanger P100013557 153 175 S AUT E R flexotron800 Configuration 18 30 5 Exchanger to 100 at start and alarm delay at start To minimise the risk of freeze up problems the heat exchanger can be forced to maximum capacity for the set time at start up To eliminate the risk of for example fan pressure alarms at start up all alarm functions can be suppressed for the set time For the function Slave control of the extract air fan the fan will start directly at 50 after the start delay in order for the heating of the exchanger to work f
73. e Digital output signal v Description Inactive output Start stop Supply air fan Normal Start stop Extract air fan Normal Start stop Supply air fan Reduced Start stop Extract air fan Reduced Start stop circulation pump heating Fire damper Sum alarm A and B alarm Sum alarm A alarm Sum alarm B alarm Start stop circulation pump cooling Start stop circulation pump liquid exchanger Activation signal SAF fre quency converter Activation signal EAF fre quency converter Activate heating Activate cooling Activate exchanger CASE flexotron Not used Heating Y1 Exchanger Y2 Cooling Y3 SAF EAF Humidity DeHumidity Split Extra unit control Y1 Heating Y3 Cooling Extra Sequence Y4 Extra Sequence Y5 CASE flexotron Not used SAF Start 1 1 Normal Speed EAF Start 1 1 Normal Speed SAF Start 1 2 Reduced Speed EAF Start 1 2 Reduced Speed Heating Pump Start Fire Damper Sum Alarm Sum Alarm A Sum Alarm B Cooling Pump Start Exchanger Start SAF Freq Start EAF Freq Start Heating Activate Cooling Activate Exchanger Activate SAUTER Installation and wiring Display Not used Y1 Heating Y2 Exchanger Y3 Cooling SAF EAF Y6 Humidity Sequence ExtraUnitCtrlVa Y1 Heat Y3 Cool Y4 extra sequence Y5 extra sequence Display Not used SAF 1 1 speed EAF 1 1 speed SAF 1 2 speed EAF 1 2 speed P1 Heating Fire damper Sum alarm A sum alarm B sum alarm P
74. e running mode switches to OFF The shutdown controller will control the heating output to maintain a constant settable temperature at the frost protection sensor 48 175 P100013557 flexotron800 6 1 3 2 6 1 3 3 6 1 3 4 P100013557 SAUTER Functional description Electric heating Control The heating is controlled using the analogue output Y1 Heating On activation of the digital input High temp limit switch the unit will be shut down either according to the stop sequence described in section Start stop of unit or as an emergency shutdown The unit will restart after the alarm has been acknowledged and High temp limit switch has reset Note that activation of the input signal Flow switch will also stop the unit Relay el Control voltage 1 heating High limit thermostat flexotron 800 Control voltage Auxiliary relay Wiring suggestion high temp limit when using electric heating Contactors drawn inactivated It is important that the high temperature thermostat is hardwired to disconnect the power to the heater to ensure that the heating is shut down when the thermostat is activated even if the flexotron800 should be faulty Water heating and electric heating The water heating is controlled by Y1 Heating and the electric heating is controlled by the sequence Split Split must always be set to Heating see section 18 30 8 Split of optional temp sequence
75. e supply air fan In that case the extract air fan is controlled with constant flow independent of the outdoor temperature The compensation can be selected to apply to both normal and reduced speed or for normal speed only factory setting both speeds Extra compensation curve As a complement to the above outdoor compensation there is a function called Extra compensation curve which can be used to set a compensation based on the room extract air or supply air temperature The curve has three parameter pairs which correspond to the value of the compensation at three different temperatures 64 175 P100013557 flexotron800 SAUTER Functional description Controller output dependent extra compensation curve The compensation is made using the control curve one for heating demand and one for cooling demand It is possible to select whether the compensation 0 100 should increase or decrease the pressure setpoint The 0 100 compensation follows the current control quantity for the fans in this case pressure Output signal Cooling demand Heating demand compensation compensation 6 4 2 Frequency control flow P100013557 Instead of giving a pressure setpoint value it is possible to use an airflow volume value in m3 h The value from the pressure transmitter is recalculated to a volume flow using the formula below and the fans will be controlled to give a constant flow Flow K A P Where K and are se
76. econds Standard 60 units 5 minutes The automatic logoff can be removed see section 9 4 Change password to remove automatic logoff 159 175 ws AUT E R flexotron800 Configuration 18 31 7 Activation of start up wizard The start up wizard is a special program which at the first start up guides the operator through a number of start up menus where you set certain operation parameters For more information see section 21 1 Start up wizard 160 175 P100013557 flexotron800 19 Other functions 19 1 Alarm handling P100013557 SAUTER Other functions 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 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 on the front of the flexotron800 RDB800 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 Reset is shown Acknowledged st
77. en breakpoints Setpoints for temperatures lower than the lowest breakpoint and higher than the highest breakpoint 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 Setpoint Control mode 3 and 5 Cascaded room temperature control In control mode 5 the setpoint is used when cascade connected room control is active Submenu for setting the min and max limitation temperatures for the supply 5 92 175 P100013557 flexotron800 S AUT E R Temperature If two room sensors have been configured you will also get the following menu Control mode 4 Cascade connected extract air control Control mode 6 Outdoor temperature dependent supply or extract air control In control mode 6 the setpoint is used when cascade connected extract air control is active Submenu for setting the min and max limitation temperatures for the supply Control mode 7 Outdoor temperature compensated room control P100013557 93 175 S AUT E R flexotron800 Temperature In control mode 7 the room setpoint is compensated based on outdoor temperature Note that the curve must be reset for optimum functionality Both the outdoor and room temperature are changeable for the curve Control mode 8 Outdoor temperature c
78. ensor for maximum limiting The limit sensor can be omitted The humidity control is handled by a Pl controller The humidity sensors must give 0 10 V DC for 0 100 RH Humidity sensor room Humidity sensor duct If the maximum limitation is 80 RH and the hysteresis is 20 RH the controller output signal will begin decreasing at 60 RH When halfway to 80 RH i e when at 70 RH half the output signal will be damped If the humidity in the duct still reaches 80 RH the entire output signal will be damped P100013557 105 175 S AUTE R flexotron800 106 175 P100013557 flexotron800 S AUT E R Time settings 14 Time settings General The flexotron800 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 schedules 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 output
79. exotron800 units are available on request with or without display Both models have a TCP IP port and one or two serial ports For a list of the different models see section 3 6 flexotron800 model overview The ports are used for connecting to CASE flexotron and possibly a SCADA system On an WEB model port 3 is the TCP IP output The serial ports ports 1 and 2 are used for expansion purposes e g for connection of expansion units external display and Vacon NXL Lenze SMV Omron Emerson LS EBM Danfoss FC 101 frequency converters A maximum of two frequency converters and two expansion units can be connected The units must be flexotron800 controllers There is no point in using slave controllers with a display since the display cannot be used or show anything However an external display is required when initially starting up slave units without display All configuration takes place using CASE flexotron or via the display on the master controller All inputs and outputs can be viewed in the master controller For configuration see section 18 configuration Version 3 1 frequency converters and expansion units can be used together Ports 1 and 2 have the same functions They can however not be configured to have the same function at the same time The TCP IP port port 3 can be used to load a web page to the unit For more information see the CASE flexotron manual 17 2 1 Vacon Lenze Omron Emerson LS EBM frequency converters P10001
80. fan The extract air fan can also be used if desired 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 Either a digital output Recirculation damper or an analogue output Y4 Extra sequence can be used as an output signal When Y4 Extra sequence is used the damper will become modulating P100013557 flexotron800 18 27 Pretreatment P100013557 SAUTER Configuration Recirculation control can be configured as either air circulation temperature control inactive or air circulation with temperature control Only heating only cooling or both heating and cooling Recirculation control can either have a unique setpoint or follow the supply air setpoint with an adjustable offset The other settings are the same as for normal operation i e if normal operation has been configured as room control room control will also be used during recirculation If the room temperature rises above the set limit value recirculation will be stopped To lower the temperature it is possible to configure free cooling to be used during recirculation if the conditions for free cooling are fulfilled Recirculation is activated either via a digital input signal or by connecting it to Timer output 5 The extract air fan can be selected to run during recirculation
81. ge 1 Active error The following signals can be used to control fan speed Address 4 44 48 49 Modbus register 30001 30001 30044 40044 30048 40048 30049 40049 Danfoss FC 101 Danfoss frequency converters are controlled via Modbus Communication alarms and certain indications can be read Name Scaling Control Word FB Setpoint 0 1 speed Password Password Type Binary kWh Hz A kW V Error code Type Binary Hz Binary Binary The following signals can be read from the frequency converter Address 27 511 527 508 510 505 30 Modbus register 30027 40027 3051140511 30527 40527 30508 40508 30510 40510 30505 40505 30030 40030 Name Scaling FB Status word Cumulative 0 1 output Motor frequency 0 1 Motor current 0 1 Motor output 0 01 DC voltage 1 Active error Type Binary kWh Hz A kW V Error code 173 175 ws AUTE R flexotron800 Appendix The following signals can be used to control fan speed Address Modbus register Name Scaling Type 1 30001 30001 Control Word Binary 44 30044 40044 FB Setpoint 0 1 Hz speed 48 30048 40048 Password Binary 49 30049 40049 Password Binary 174 175 P100013557 O Fr Sauter AG Im Surinam 55 CH 4016 Basel Tel 41 61 695 55 55 Fax 41 61 695 55 10 www sauter controls com info Osauter controls com Printed in Switzerland
82. he unit The display should read iH 0 0 This is performed by opening terminal B4 e Set parameter 10 to L3 i e all parameters up to and including 95 can then be altered e Set parameter 43 to 9 6 9600 baud LS LS frequency converters are controlled via Modbus Communication alarms and certain indications can be read Address Modbus register Name Scaling Type 27 30027 40027 FB Status word Binary 511 3051140511 Cumulative 0 1 kWh output 527 30527 40527 Motor frequency 0 1 Hz 508 30508 40508 Motor current 0 1 A 510 30510 40510 Motor output 0 01 kW 505 30505 40505 DC voltage 1 V 30 30030 40030 Active error Error code P100013557 flexotron800 P100013557 The following parameters are used to control fan speed Address 4 44 48 49 EBM Modbus register 30001 30001 30044 40044 30048 40048 30049 40049 Name Scaling FB Status word FB Setpoint 0 1 speed Password Password SAUTER Appendix Type Binary Hz Binary Binary EBM frequency converters are controlled via Modbus Communication alarms and certain indications can be read The following signals can be read from the frequency converter Address 27 511 527 508 510 505 30 Modbus register 30027 40027 3051140511 30527 40527 30508 40508 30510 40510 30505 40505 30030 40030 Name Scaling FB Status word Cumulative 0 1 output Motor frequency 0 1 Motor current 0 1 Motor output 0 01 DC volta
83. hows the present running status The text on the first line can be changed using CASE flexotron The second line shows the date and time 18 31 3 Automatic summer wintertime change over 158 175 When flexotron800 is set on automatic summertime wintertime change over the timer will automatically change between summertime and wintertime according to European standard P100013557 flexotron800 18 31 4 Address SAUTER Configuration The flexotron800 uses the addresses below when connecting to CASE flexotron and when multiple controllers are connected in an network CASE flexotron normally uses the addresses below so if an address is changed the new address must also be entered in CASE flexotron If several flexotron800 are connected in a network all the units must have the same ELA address but each unit must have a unique PLA address 18 31 5 Display anywhere remote control If multiple flexotron800 units are connected in a network it is possible to remote control a unit in the network from a unit with display You do this by entering the address of the unit you wish to remote control in the unit with display The function is aborted by pressing the buttons UP OK and DOWN simultaneously 18 31 6 Automatic logoff P100013557 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 in units of 5 s
84. if heating P100013557 101 175 SAUTER Air control 102 175 flexotron800 The compensation follows the current control quantity in this case pressure Submenu Controller output compensation Submenu Compensation only when Flow units can be measured in both m3 h cubic meters per hour and in CFM cubic feet per minute Manual frequency control SAF there are corresponding menus for EAF Submenu Setpoint Submenu Outdoor compensation P100013557 flexotron800 S AUT E R Air control Submenu Extra compensation curve Submenu Controller output compensation if cooling Submenu Controller output compensation if heating The compensation follows the current control quantity in this case The function should not be used when fan setpoint is set to as the fans will then risk stopping in some modes Submenu Controller output compensation Submenu Compensation only when Flow units can be measured in both m3 h cubic meters per hour and in CFM cubic feet per minute P100013557 103 175 S AUT E R flexotron800 Air control CO2 104 175 P100013557 flexotron800 S AUT E R Humidity control 13 Humidity control Humidity control can be configured as Humidification Dehumidification or both Humidification and Dehumidification Two humidity sensors can be connected a room sensor for control and an optional duct s
85. ill 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 The LED is then lit 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 user access 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 161 175 S AUTE R flexotron800 Other functions 19 2 Free text If RIGHT is pressed once when the start menu is shown a menu showing text of your 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 Four lines of 20 characters 19 3 Revision number If RIGHT is pressed twice when the start menu is shown a menu showing the program revision number i e the date on which the program was created and the flexotron8
86. ime Step controllers Step controller heating Step controller cooling SAUTER Menu structure 165 175 SAUTER Menu structure 166 175 flexotron800 Recirculation Pretreatment Alarm settings Communication Other parameters Delay SAF Delay EAF Retardation time Heating at start up and high speed blocking Start delay exchanger Exchanger to 100 at start Alarm delay at start Split controller settings Fast stop on alarm electric heating is overheated Automatically restart after power on Invert all sum alarm outputs Temperature unit Flow unit System Choose Language Choose Start Screen Automatic summer winter time change over Addree ELA PLA Address for remote communication Time before user is logged off automatically P100013557 flexotron800 YS AUTE R Changing the battery 21 Changing the battery O This procedure requires knowledge of proper ESD protection i e an earthed wristband must be used When the alarm Internal Battery is activated and the battery LED lights up red the battery for backup of program memory and real time clock has become too weak The battery is replaced as described below A backup capacitor saves the memory and keeps the clock running for at least 10 minutes after the power supply is removed Therefore if the battery replacement takes less than 10 minutes there will be no need to reload the program and the clock will continue to run normally The rep
87. in To back down to a lower menu level use Left 8 4 1 Change parameters In some menus there are parameters that can be set This is indicated by the yellow LED with 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 If you need higher authority than you have to change the parameter a log on menu will be displayed see section 9 Access rights below Otherwise a cursor will appear at the first settable value If 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 and Right buttons When the desired value is displayed press OK If there are further settable values displayed the cursor will automatically move to the next one To pass a value without changing it press the Right button To abort a change and return to the initial setting press and hold the C button until the cursor disappears P100013557 81 175 S AUTE R flexotron800 82 175 P100013557 flexotron800 9 Access rights 9 1 Logon P100013557 SAUTER Access rights There are four different access levels The Admin level has the highest access while the Service Operator and basic no log on level have the lowest
88. in the supply air and extract air ducts The K and X constants for each fan are used to calculate the flow 6 2 Extra control circuit 6 3 Humidity control 6 3 1 Humidification 6 3 2 Dehumidification P100013557 An independent temperature control circuit for control of for example after heaters The circuit can be configured to heating or cooling It has an analogue input signal for temperature sensors and an analogue output signal 0 10 V There is also a digital output signal which is activated when the analogue output signal is above 1 V and deactivated when the analogue signal is below 0 1 V The circuit can be configured to be active all the time or to be active only when the main unit is running at normal speed General Humidity control can be configured as Humidification Dehumidification or both Humidification and Dehumidification Two humidity sensors can be connected a room sensor for control and an optional duct sensor for maximum limiting The limit sensor can be omitted The humidity control is handled by a Pl controller The humidity sensors must give 0 10 V DC for 0 100 RH An analogue output is used to control a humidifier The output will increase on decreasing humidity A digital output can also be used to start a humidifier Maximum limitation function using duct humidity sensor If the maximum limitation is 80 RH and the hysteresis is 20 RH the controller output signal will begin decreasing at 60
89. it 70 175 The circulation pump for the exchanger circuit will run when the output to the exchanger valve is larger than 0 V The pump has a settable shortest running time The pump will be exercised once daily at 3 p m for 1 minute or the set stop delay whichever is the longest The circulation pump for the cooling circuit will run when the output to the cooling valve is larger than 0 V The pump has a settable shortest running time The pump will be exercised once daily at 3 p m for 1 minute or the set stop delay whichever is the longest flexotron800 can be configured to block DX cooling if a Malfunction P1 Cooling alarm should occur In and outputs Heating Exch Cooling Al Outdoor temperature sensor DO DO DO Start stop circulation pump DI DI DI Run ind alarm circ pump P100013557 flexotron800 6 6 Damper control SAUTER Functional description 6 6 1 Close off dampers 6 6 2 Fire dampers The outdoor air and exhaust air ducts close off dampers can be controlled by digital outputs or be hard wired to the supply air fan relays for normal and reduced speed in such a fashion that the damper is open when the supply air fan is running When using pressure controlled fans the digital activation signal is activated as soon as the fan has start conditions This signal can be used to open the close off damper Fire dampers are normally configured to open on fire alarm However they can be configured t
90. ital inputs DI 127 18 1 3 Universal inputs UI 127 18 1 4 Analogue outputs 128 18 1 5 Digital outputs 129 18 2 Sensor settings 129 18 3 Control function 129 18 4 Fan control 130 18 4 1 Flow control 130 18 4 2 SAF with EAF slave EAF with SAF slave 131 18 4 3 SAF with EAF flow control EAF with SAF flow control 131 18 4 4 Crosswise interlock between fans 132 18 5 Extra control circuit 132 18 6 Extra sequence Y4 132 18 7 Extra sequence Y5 133 18 8 Heating coil 133 18 9 Exchanger 133 18 10 Chiller 134 18 10 1 Min limit lowering 134 18 10 2 Blocking the DX cooling at low outdoor temp 134 18 10 3 Blocking of DX cooling on cooling pump alarm 135 18 10 4 Override of reduced speed for DX cooling 135 18 11 Pump control 135 18 12 Free cooling 136 18 13 Support control 137 18 14 CO2 Demand control 137 18 15 Fire function 137 18 16 Humidity control 138 18 17 Exchanger de icing 139 18 18 Cooling recovery 139 18 19 Minimum limit dampers 139 18 20 Enthalpy control 139 18 21 External setpoint 140 18 22 Run indication Motor protection 140 18 22 1 Alarm from frequency converter 141 18 23 Type of actuator 141 18 24 Running time 3 position actuators 142 18 25 Step controllers 142 18 25 1 Step controller heating 142 P100013557 flexotron800 P100013557 18 25 2 18 25 3 SAUTER Step controller cooling Step controllers Change over 18 26 Recirculation 18 27 Pretreatment 18 28 Alarm setting 18 28 1 Alarm text 18 29 Communication
91. itch 10 DI2 Frost protection facility 34 Reference potential for analogue inputs Al 11 DI3 Supply air fan on 33 Al1 Outdoor temperature sensor 12 DI4 Anti icing function 32 Al2 Sensor for supply air temperature 31 Reference potential for analogue inputs Al 17 Reference potential for analogue outputs f AO 30 AI3 Frost protection sensor 18 AO1 Y1 actuator for heater 29 Al4 Return air temperature 19 AO2 Y2 actuator for HRec 20 AO3 Y3 actuator for cooler P100013557 33 175 SAUTER Installation and wiring flexotron800 4 6 Wiring diagram RDT815 Configuration 815 fixed value See also picture of terminal positions on page 21 LS Power supply 24 V AC 15 50 60 Hz 1 D RS485 Modbus not with web TCP IP or 24V DC models MM 2 D Earth conductor 3 C IE 43 24V 24 V DC Reference point for digital inputs DI 4 E 42 LS Reference point for digital outputs DO 41 DO1 Heating coil pump 40 DO2 Supply air fan level 1 39 DO3 Supply air fan level 2 38 DO4 Collective alarm 9 DI External OFF switch 10 DI2 Frost protection facility 34 Reference potential for analogue inputs Al 11 DI3 Supply air fan on 33 Al1 Outdoor temperature sensor 12 DI4 Anti icing function 32 Al2 Sensor for supply air temperature 31 Reference potential for analogue inputs Al 17 Reference potential for analogue output
92. lacement battery must be of the type CR2032 Remove the cover by pressing down the locking torques at the edge of the cover using a small screwdriver and at the same time pulling the edges outwards P100013557 167 175 SAUTER Changing the battery 21 1 168 175 Start up wizard flexotron800 Battery location Grip the battery firmly with your fingers and lift it upwards until it rises from its holder Press the new battery firmly down into place To preserve correct polarity the battery can only be inserted the right way round The start up wizard is a function that can be activated in Configuration System See section 18 31 7 Activation of start up wizard If the wizard has been activated the operator will access a number of menus at power up These menus contain certain operation parameters that should be set The wizard is useful when the controller is delivered pre configured together with an air handling unit After the controller has been configured the manufacturer of the air handling unit will activate the start up wizard which will help the operator to set setpoint values running times etc without having to log on In the first menu the language is chosen P100013557 flexotron800 P100013557 SAUTER Changing the battery In the second menu the setpoint is set The appearance of the menu depends on which control type has been configured In the third menu
93. later Red LED View alarms QQ a Yellow LED aay ds Confirm choices Erase S Down There are seven buttons four arrow buttons which will be called Up Down Right and Left The menus in the flexotron800 are organized in a horizontal tree structure The Up and Down buttons are used to move between menus at the present menu level The Right and Left buttons are used to move between menu levels When changing parameters the Up and Down buttons are used to increase decrease the value of the parameter and the Right and Left buttons to move between digits within the parameter e The OK button is used to confirm the choice of a parameter setting See more in the section 8 4 1 Change parameters below e The C button is used to abort an initiated parameter change and restore the original value e The ALARM button marked with a red button top is used to access the alarm list 79 175 SAUTER flexotron800 Display LEDs and buttons 8 4 80 175 Navigating the menus The choice of access level user access determines which menus are shown in the menu system The start display the display normally shown is at the root of the menu tree Pressing DOWN will move you through the menu choices at this the lowest level UP will move you back through the choices Which menus are shown depends on which access level you are using see section 9 Access rights for more information
94. ling This function is used during the summer to cool the building night time using cool outdoor air thereby reducing the need for cooling during the day and saving energy Free cooling requires an outdoor sensor or an inlet temperature sensor and either a room sensor or an extract air sensor The outdoor sensor can be placed in the fresh air inlet duct Free cooling is only activated when all the start conditions are fulfilled Start conditions e Less than four days have passed since the unit was last in running mode e The outdoor temperature during the previous running period exceeded a set limit 22 C e Itis between 00 00 and 07 00 00 in the day settable e The timer outputs for normal speed Extended running Normal and External switch are OFF e A timer channel will be ON sometime during the recently started 24 hours If the outdoor sensor is located in the fresh air inlet duct and or an extract air sensor is selected and ALL the start conditions are fulfilled free cooling is activated and will run for 3 minutes to ensure that the temperature measurement when using an extract air sensor reflects the corresponding room temperature and that the outdoor temperature sensor senses the outdoor temperature even if it is placed in the fresh air inlet duct If the outdoor sensor is not located in the fresh air inlet duct and a room sensor is selected the unit will not start free cooling as long as all the temperat
95. lumn contains a description of the in output signal the middle column displays the name of the corresponding signal in CASE flexotron and the right column shows the text displayed in the flexotron800 controller Analogue input signal P100013557 sensor v Description CASE flexotron Display Inactive input Not used Not used Outdoor temperature sensor Outdoor Temp Outd temp Ni1000 or 0 10 V Supply air temperature Supply Air Temp Supplytemp Extract air temperature Extract Air Temp Extracttemp sensor Exhaust air temperature Exhaust Air Temp Exhausttemp sensor Room temperature sensor 1 Room Temp 1 Room temp1 Ni1000 or 0 10 V Room temperature sensor 2 Room Temp 2 Room temp2 CO2 sensor 0 10 V DC CO2 Sensor CO2 Pressure transmitter supply air 0 10V DC Pressure transmitter extract air 0 10 V DC De icing sensor heat exchanger Frost protection sensor Room humidity sensor Duct humidity sensor Outdoor humidity sensor Temperature sensor Extra controller SAF Pressure EAF Pressure Deicing Temp Frost Protection Temp Humidity Room Humidity Duct Humidity Outdoor Extra unit temp SAF pressure EAF pressure Deicingtemp Frost prot temp Humidity room Humidity duct Humidity out Extra unit temp External control supply air External control SAF SAF ext Ctrl fan External control extract air External control EAF EAF ext Ctrl fan Pressure transmitter supply air 2 SAF Pressure 2 SAF pressure 2
96. ly air setpoint given by the room extract air controller The output uses P100013557 53 175 SAUTER Functional description flexotron800 P control with a P band of half the setpoint lowering adjustable 2 5 C as default The setpoint given by the room extract air controller cannot drop below the set min limit When there is no longer a cooling demand the supply air controller setpoint will return to the value given by the room extract air controller The function cannot be used if the exchanger signal controls a mixing damper Example The room controller gives a supply air setpoint of 16 C If there is a cooling demand the supply air controller setpoint is lowered to 11 C 16 5 and DX cooling is activated Should the supply air temperature fall below 16 C the exchanger output will be activated and reach 100 output when the supply air temperature has fallen to 13 5 C 16 2 5 6 1 5 4 Blocking of DX cooling at low outdoor temperature DX cooling can be blocked when the outdoor temperature is low It is possible to block the three cooling steps individually or to block all DX cooling The temperature limits are adjustable 13 C default and have a fixed one degree hysteresis When two DX cooling steps are used with binary function the cooling effect is divided into three steps The desired blocking level can be set individually for each of these steps When three DX cooling steps are used with binary functio
97. ly air via a low recirculation setpoint the cooling battery will be used A max room temperature can be configured for recirculation control If the room temperature rises above the set value FS 25 C recirculation will be stopped 59 175 SAUTER Functional description 6 1 13 Change over flexotron800 When the room temperature has fallen 1 K below the set max limit recirculation will start again if the start conditions are still fulfilled When running frequency controlled fans and using recirculation control you can depending on the type of fan control configure a special pressure flow offset for the setpoint or a manual output signal for the supply air fan Change over is a function for installations with 2 pipe systems It makes it possible to use the same pipe for both heating and cooling depending on whether heating or cooling is required A special analogue output signal Y1 Heating Y3 Cooling is used for Change over control Switching between heating and cooling can be done in two ways A digital Change over input signal is normally used Open contact gives heating control and closed contact gives cooling control If the input has not been configured change over is handled by the internal controller signal The output signal will follow the two regular output signals Y1 Heating and Y3 Cooling For heating control the digital outputs Heating Activate and Heat Step 1 4 are active For cooling c
98. mperature compensated supply air control The supply air temperature setpoint is outdoor temperature compensated using a control curve with 8 node points The supply air temperature is kept at the setpoint value by controlling the output signals for Y1 Heating Y2 Heat exchanger Y3 Cooling Extra sequence Y4 and Extra sequence Y5 A single PI control loop is used Alarms which are activated when the supply air temperature is too high or too low are active Alarm for control offset of the supply air temperature is active 3 Cascaded room temperature control Cascade control of room temperature and supply air temperature to achieve a constant settable room temperature The room controller output signal generates the supply air controller s setpoint value One or two room sensors can be connected If two sensors are connected the average of their values will be used The number of room sensors is detected automatically The room temperature is kept at the setpoint value by controlling the output signals for Y1 Heating Y2 Heat exchanger Y3 Cooling Extra sequence Y4 and Extra sequence Y5 Two PI loops are used The room setpoint value is set using the front panel or alternatively using an external setpoint device 4 Cascaded extract air temperature control Cascade control of extract air temperature and supply air temperature to achieve a constant settable room temperature The extr
99. n the cooling effect is divided into seven steps However the controller still only has three blocking level settings Therefore Blocking step 1 will apply to binary steps 1 and 2 Blocking step 2 to binary steps 3 and 4 and Blocking step 3 to binary steps 5 6 and 7 6 1 5 5 Blocking of DX cooling at low supply air fan speed 54 175 When DX cooling is used in conjunction with pressure controlled or flow controlled fans it is possible to block DX cooling if the supply air fan control signal falls below a preset values For sequential control the blocking level is individually settable for each DX cooling step When two DX cooling steps are used with binary function the cooling effect is divided into three steps The desired blocking level can be set individually for each of these steps When three DX cooling steps are used with binary function the cooling effect is divided into seven steps However the controller still only has three blocking level settings Therefore Blocking step 1 will apply to binary steps 1 and 2 Blocking step 2 to binary steps 3 and 4 and Blocking step 3 to binary steps 5 6 and 7 P100013557 flexotron800 SAUTER Functional description 6 1 5 6 Blocking of DX cooling on cooling pump alarm The controller can be configured to block DX cooling on cooling pump alarm In and outputs Heating Cooling Heating Cooling Change over DO DO DO Step controller step 1 optional DO DO DO Step controller
100. n will also stop Timer outputs interlock at low outdoor temperatures The fans are normally controlled by the timer channels for normal and reduced speed At very low outdoor temperatures 2 speed fans or pressure controlled fans can be forced to reduced speed The limit temperature is settable and the function has a differential of 2K Normal reduced speed Units with 2 speed or pressure control fans are always started at reduced speed After a settable time the controller switches to Normal speed if normal speed is valid at start up When 2 speed fans are switched from Reduced speed to Normal speed Reduced speed is first disengaged About 2 sec later Normal speed is activated When the controller switches from Normal speed to Reduced speed there is a settable retardation time from disengagement to activation See the section 18 30 2 Retardation time The extract air fan and the supply air fan have individual start and stop delays which are normally set so that the extract air fan is started before the supply air fan If there are not enough digital outputs for individual control both fans will have to be started using the signal for the supply air fan and the delay be created using an external time relay 63 175 S AUTE R flexotron800 Functional description 6 4 1 Pressure control 6 4 1 1 Frequency control pressure During pressure control two separate analogue output
101. ng Change over control see section 6 1 13 Change over They have the same functions as other step controller outputs but are set to either heating or cooling depending on whether heating or cooling is required 6 1 5 3 DX cooling with room or extract air control If DX cooling is used in conjunction with room temperature control or extract air temperature control there are two configuration alternatives DX cooling or DX cooling with exchanger control DX cooling without exchanger control When running cascade control the supply air controller setpoint is normally controlled by the room extract air controller output signal When DX cooling is activated the supply air controller setpoint is lowered to five degrees adjustable below the setpoint given by the room extract air controller This prevents the DX cooling from being activated deactivated too often DX cooling with exchanger control When running cascade control the supply air controller setpoint is normally controlled by the room extract air controller output signal When DX cooling is activated the supply air controller setpoint is lowered to five degrees adjustable below the setpoint given by the room extract air controller This prevents the DX cooling from being activated deactivated too often If the supply air temperature falls below the setpoint given by the room extract air controller the heat exchanger output will be activated in order to try to maintain the supp
102. ng on cooling pump alarm DX cooling can be blocked on activation of the cooling pump alarm 18 10 4 Override of reduced speed for DX cooling Override to normal quantity of air for DX cooling when the unit runs on reduced quantity of air The fans can be set to normal operation when cooling is required at high outdoor temperatures e g gt 14 C the same temperature limit as for blocking of DX cooling 18 11 Pump control In these menus the parameters for pump control are set If for any of the control circuits no output is configured for pump control these settings will be ignored P1 Heating P1 Exchanger P100013557 135 175 ws AUT E R flexotron800 Configuration P1 Cooling For a detailed description of pump functions see section 6 5 Pump control 18 12 Free cooling For detailed description see section 6 1 7 Free cooling 136 175 P100013557 flexotron800 18 13 Support control SAUTER Configuration If you select the function support control without EAF extract air fan a recirculation damper must be used See more in section 6 1 6 Support control Minimum running time For detailed description see section 6 1 6 Support control 18 14 CO2 Demand control 18 15 Fire function P100013557 There is a detailed description in section 6 4 10 Fire dampers are normally configured to open on fire alarm However they can be configured to be normally open instead via the dis
103. ntrol parameters P band I time for the temperature control Set the control parameters for the pressure control if you have pressure or flow controlled fans Set the control parameters for the humidity control if activated Set the alarm parameters alarm levels and delay times P100013557 flexotron800 YS AUTE R Commissioning Time settings Read section 14 Time settings Set the clock and calendar functions Setpoints Read sections 14 Time settings 16 Settings Set all the setpoints for all active control loops Manual Auto Read section 15 Manual Auto Learn to use manual control Very useful for testing out your system Other functions Read section 19 Other functions Alarm handling etc P100013557 41 175 S AUTE R flexotron800 42 175 P100013557 flexotron800 SAUTER Functional description 6 Functional description 6 1 Temperature control 6 1 1 General P100013557 The controller flexotron800 has a choice of the following control modes 1 Supply air control 2 Outdoor temperature compensated supply air control 3 Cascaded room temperature control 4 Cascade connected extract air temperature control 5 Outdoor temperature dependent switching between supply air control with outdoor temperature compensation and room temperature control 6 Outdoor temperature dependent switching between supply air control with outdoor temperature compensation and extract air control 7 Outdoor compensated room
104. o be normally open instead via the display See section 18 15 Fire function for more information on the function 6 6 2 1 Fire damper exercising P100013557 Fire damper exercising can be configured The exercise interval is settable To be able to use this function all the dampers must have end position switches The digital input Fire damper end switch monitoring should be wired to all the fire damper end position switches Damper a ad lassas Damper 3 lt Damper 2 E 7 Damper 1 E When the test cycle is initiated the output Fire dampers will be activated and the dampers will begin to move Within the set time 90 sec the signal on Fire damper end switch monitoring must change to indicate that the dampers have left their normal positions If not an alarm will be triggered Then within the set time Fire damper end switch monitoring must change again to indicate that all the dampers have reached the other end position If not an alarm will be triggered When all dampers have reached the end position the output Fire dampers will be reset to drive the dampers back to normal position Again within the set time 90 sec the signal on the input Fire damper end switch monitoring must change TWAS S AUTE R flexotron800 Functional description to indicate that the dampers have left the end positions If not an alarm will be triggered Then within the set time Fire damper
105. ode Selected functions Alarm events Input Output Temperature Setpoint Support control heating Support control cooling Frost protection temperature De icingg temperature Heat exchanging Recirculation Extra control circuit Entahalpy control Air control Pressure control Flow control Frequency Control manual CO2 VCO Humidity control Humidity sensor room SAUTER Menu structure A simplified overview of the menu structure of the flexotron800 shows the following The menu items shown are dependent on the active operating level and on the current configuration 163 175 SAUTER Menu structure Humidity sensor duct Time settings Time Date Timer Normal Speed Timer Reduced Speed Extended running Holidays Manual Auto Settings Control temp Control pressure Control flow Control Humidity Control CO2 Control extra unit Alarm settings Alarm limits Alarm delays Restore alarms Save and restore settings Configuration Inputs Outputs Sensor settings Fan control SAF flow factors 164 175 flexotron800 P100013557 flexotron800 P100013557 EAF flow factors EAF CAV factor Extra control unit Extra sequence Y5 Heating Exchanger Cooling Pump control Free cooling Support control CO2 VOC control Fire function Humidity control Exchanger de icing Cooling recovery Enthalpy control Min lim Dampers External setpoint Run ind Motor prot Type of actuator Actuator run time Actuat period t
106. ol e Extra separate temperature control circuit for after heaters etc e Extra control sequences Y4 and Y5 in addition to Y1 Y2 and Y3 for free integration into the controller output With control of e Heat exchanger liquid connected plate or rotating or mixing dampers e Heating coil Water with or without frost protection or electric with high temperature limit switch e Cooling Water or DX cooling in up to 3 steps e Circulation pumps heating cooling exchanger Fan control e 1 or 2 speed supply air fans and extract air fans e Frequency controlled supply and extract air fans with pressure or flow control manual control or external control from a VAV system e Pressure controlled supply air fan with slave connected extract air fan output dependent or flow dependent or opposite function pressure controlled extract air fan with slave connected supply air fan output dependent or flow dependent Humidity control e Itis possible to use either humidification or dehumidification or to use combined humidification and dehumidification Timer control e For starting and stopping the unit annual clock function Up to 5 timer outputs for control of external functions such as lighting doorlocks etc Demand controlled ventilation e In buildings with strongly varying occupancy the fan speeds or mixing dampers can be controlled by the air quality measured by a CO2 VOC sensor Support control When using the con
107. ompensated extract air control 94 175 P100013557 flexotron800 P100013557 SAUTER Temperature In control mode 8 the extract air setpoint is compensated based on outdoor temperature Note that the curve must be adjusted for optimal functionality Both the outdoor and extract air temperature are changeable for the curve Support control heating Support control cooling Frost protection temperature De icing exchanger Heat exchanger efficiency monitoring 95 175 SAUTER Temperature 96 175 flexotron800 Recirculation see section 6 1 12 Recirculation Offset SAF makes it possible to add 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 percent Extra control circuit see section 6 2 Extra control circuit Enthalpy control Submenus P100013557 flexotron800 S AUT E R Temperature Status enthalpy control P100013557 S775 S AUTE R flexotron800 98 175 P100013557 flexotron800 12 Air control SAUTER Air control 12 1 Pressure control SAF and EAF P100013557 When using pressure or flow controlled fans the setpoint can be temperature compensated The compensation has the default value O Pa i e no compensation is added The compensation is linear between the setting poin
108. ontrol Cooling Activate and Cool Step 1 3 are active If frost protection sensor has been configured it will function in the usual way when heating is active However when cooling is active it will only be used for indicating temperature Three digital output signals Heat Cool Step 1 Heat Cool Step 2 and Heat Cool Step 3 are also connected with change over The signals can be used for reversing a step controlled heating pump etc See also section 18 25 1 Step controller Heating DX cooling The change over function can be split if needed If so set the analogue output to Split and select the function Y1 Heating Y3 Cooling A digital function called Split Sequence is connected to the split signal It is active when the corresponding analogue signal exceeds 0 1 V 6 1 14 Extra temperature sensor 60 175 The input signals Extra Sensor Temp 1 Extra Sensor Temp 2 Extra Sensor Temp 5 can be used to add extra temperature sensors for supervision of temperatures that are not related to any control functions Each sensor has three alarms tied to it High temperature Low temperature and Sensor error Extra Sensor Temp 1 should be used for external setpoint input P100013557 flexotron800 SAUTER Functional description 6 1 15 Extra flow sensors supply air and extract air The input signals Extra SAF Pressure and Extra EAF Pressure can be used to display the flow
109. or air and cooling is required the heat exchanger control is reversed in order to return the cool extract air e Used as a recovery function or during heating with support control during the night Recirculation control is available as an analogue or a digital function Recirculation control e Recirculation of air using a supply air fan and optionally extract air fan and a recirculation damper with or without temperature control Step controllers Heating Cooling e Asan 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 Change over e n 2 pipe systems where a combination heater cooler is operating together with a heat pump Change over is a function that enables using the same pipe for both heating and cooling depending on which is currently required It uses the output Y1 Heating Y3 Cooling P100013557 flexotron800 3 5 N Model T o ve a oc Analogue 2 Inputs Digital 3 Inputs Universal Inputs Analogue 1 Outputs Digital 2 Outputs RS485 Yes TCP IP No Display No Ext display Op 1 port Yes 2 ports No 3 6 P100013557 RDT808F212 Yes No Yes Op Yes No N N gt N LL LL L0 10 so pa E E m m oc Ac 4 4 4 4 3 3 4 4 Yes Yes No No No Yes Op Op Yes Yes No No flexotron800 hardware overview RDT815F022 4 No Yes No Op Yes No RD
110. or example P band for the supply air controller is set to 25 K The split is set so that cooling gets 0 20 20 the exchanger gets 30 50 20 and the heater gets 50 100 50 The individual P bands will then be Chiller 20 of 25 C 5 C Exchanger 20 of 25 C 5 C Heating 50 of 25 C 12 5 C The remaining 2 5 C are the neutral zone between cooling and exchanger 1115 175 S AUT E R flexotron800 Settings The split values are set in the configuration submenu Other parameters Room controller Extract air controller Shutdown mode Frost protection temperature 116 175 P100013557 flexotron800 S AUT E R Settings Setp shutdown is the shutdown mode setpoint P band active 5 C means that the frost protection controller will start overriding the heating output when the frost protection temperature is less than five degrees above the set frost alarm limit The default alarm limit is 7 C It can be changed in the menu Settings Alarm settings Alarm limits Alarm limit frost protection Exchanger de icing 16 2 Control pressure Pressure control SAF Pressure control EAF 16 3 Control flow Flow control SAF Flow control EAF P100013557 117 175 S AUT E R flexotron800 Settings 16 4 Humidity control 16 5 Control Extra unit 16 6 Alarm settings Alarm settings 16 6 1 Alarm limits Alarm limits supply air Alarm limits extract air
111. or the software 9 175 SAUTER Generell notes 1 3 2 General note flexotron800 A general note is information to aid understanding and can contain the following e Background information e Information on a specific situation Gp This can indicate a general note 1 4 Notes for using the manual 1 4 1 Markups Format SHIFT SHIFT SELECT SHIFT SELECT System 10 175 Use Press button Press button combination simultaneously Press button sequence Cross reference section name Action Press the Shift button Press the Shift and Select keys at the same time First press the Shift key then the Select key See section System P100013557 flexotron800 YS AUTE R About the manual 2 About the manual This manual covers all the models in the flexotron800 series used with the ventilation application This revised version contains program functions for software version 3 3 2 1 Further information More information about flexotron800 can be found in Document name Description Language Document number SAUTER CASE flexotron800 V2 Manual of how to configure the controllers DE EN FR P100012096 User Manual using the PC software SAUTER CASE P100012097 flexotron P100012098 SAUTER flexotron800 V2 User A simplified manual DE EN FR P100013559 Guide Ventilation application P100013560 P100013561 List of network variables for Variable list for Modbus and BACnet
112. or this operating mode When the supply air fan starts the extract air fan will be slave controlled by the flow in the supply air duct 18 30 6 Split controller signal Splits the controller output Heating Controller Output signal HCOut between the analogue temperature control output signals Y1 Y2 and Y3 for Heating Heat exchanger and Cooling To create a neutral zone leave a percentage gap between sequences The set P band for the supply air controller is for the whole controller signal This means that the P band for each sequence is proportionate to the split percentage values given to sequences Example P band for the supply air controller is set to 33K The HCO is set so that cooling gets 0 30 30 the exchanger gets 32 50 18 and the heater gets 54 100 46 The individual P bands will then be Chiller 30 of 33 C 10 C Exchanger 18 of 33 C 6 C Heating 46 of 33 C 15 C The remaining 2 C are the neutral zone between cooling and exchanger 154 175 P100013557 flexotron800 S AUT E R Configuration Output signal 100 0 H Controller Cooling Heat Heating signal exch 100 54 50 32 30 0 Heat demand P100013557 155 175 S AUT E R flexotron800 Configuration 18 30 7 Outdoor temp for control mode change If the unit is configured for combined Supply air Room control this menu permits the setting of the change
113. ort between Modbus and proprietary protocol in order to communicate with the frequency converters via Modbus and with the expansion unit via proprietary protocol Press RIGHT to select which expansion units are to be connected 151 175 SAUTER Configuration 18 29 2 Function port 2 flexotron800 Then go a step down to select which frequency converters are to be connected For additional settings for frequency converters see appendix at the end of this document Expansion unit and external display An expansion unit and external display can be used on the same port simultaneously In a flexotron800 with 3 ports both serial ports have the same function They can however not be configured to have the same function at the same time 18 29 3 BACnet communication 18 30 Other parameters In order to connect a flexotron800 running a ventilation application to a SCADA system via BACnet IP a flexotron800 V2 controller with a TCP IP port is required BACnet communication cannot be activated via the display It must instead be activated using CASE flexotron For additional information see the PICS document and variable list available via www sauter controls com 18 30 1 Start and stop delays for the fans 152 175 Use start delay if you wish one of the fans to start before the other and for example if you wish to give the close off dampers time to open before starting the fans Use stop delay e g to create a cool
114. over outdoor temperature 18 30 8 Split of optional temp sequence Any one of the analogue temperature control output sequences Y1 Y2 and Y3 Y1 Heating Y3 Cooling Y4 extra sequence can be split for example to control two heating valves in sequence The split is always even 50 50 which means that each part of the split will have half the part of the P band assigned to the output An analogue output must be assigned to the output signal Split On increasing output demana the regular output is always run first and then the output that has been configured as Split 18 30 9 Fast stop on overheating If this function is active the fans will be immediately stopped when there is an overheating alarm regardless of the set cool down time 18 30 10 Automatic restart at power up The function Automatic restart at power up makes it possible to block automatic restart of the unit at power up At power up the B alarm Restart blocked after power on is generated Once this alarm has been acknowledged the unit will 156 175 P100013557 flexotron800 S AUT E R Configuration 18 31 System 18 31 1 Change language Use this menu to change the display language O This menu is also directly accessible by holding the OK button depressed during power up or by pressing right arrow three times when the start display is shown The different language files are stored in the application memo
115. perature is lower than 10 C When the control signal is lower than 5 or the outdoor temperature is higher than 10 C the display will show 0 The heat exchanger efficiency is calculated using the following formula Alarm An alarm is activated if the efficiency falls below the set alarm level 50 In and outputs Al Outdoor temperature sensor Al Extract air sensor Al Exhaust air sensor P100013557 flexotron800 6 1 11 External setpoint 6 1 12 Recirculation P100013557 SAUTER Functional description An external setpoint device can be connected The setpoint device must follow the Ni1000 resistance curve for example the EGT388F002 The unit is connected to the analogue input signal Extra temperature sensor 1 The function must be activated in the menu Configuration External setpoint The setting range can be min max limited via a setting in the controller The factory setting is min 12 max 30 In and outputs Al Extra temperature sensor 1 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 but can also be set to run and a recirculation damper opens which allows the air to circulate through the unit Recirculation is activated either via a digital input signal or by connecting it to Timer output 5 If timer output for norm
116. placed in the extract air fan cone Extra SAF Pressure provides a measurement of the current extract air flow A corresponding pressure transmitter is placed in the supply air fan cone providing a measurement of the supply air flow The supply air fan is controlled using the extract air flow as a setpoint A scaling factor can be added if the supply air fan does not have the same characteristics as the extract air fan 6 4 9 Frequency control SAF and EAF with external flow setpoint This signal can be used to control the SAF and EAF flow setpoints from an external VAV system if the Frequency control external fan type is used If this signal is configured as an analogue input signal the flow setpoint for the SAF and EAF will be controlled in normal speed The signal can be configured by using scaling Min volt input Vmin Min flow and Max volt input Vmax Max flow Minimum limit For frequency controlled fans an adjustable minimum limit can be set individually on the supply air and extract air fan control signals P100013557 67 175 SAUTER Functional description In and outputs 1 speed 2 speed DO DO DO DO DO DO DI DI DI DI 6 4 10 Demand controlled ventilation Pressure Flow DO DO Al Al Al Al Al Al AO AO flexotron800 Start SAF Normal Start EAF Normal Start SAF reduced Start EAF reduced SAF frequency start EAF frequency start Indication alarm SAF Indication alarm EAF Pressure
117. play You can use CASE flexotron to configure the air handling unit s running mode on fire alarm The following options are available stopped continuous run run via normal start stop conditions only supply air fan in operation or only extract air fan in operation As of software version 3 2 fire alarm priority has been altered so that the unit will not stop for any other alarm e g frost protection when it has been configured for 137 175 S AUT E R flexotron800 Configuration continued operation during fire alarms The digital input external switch will still stop the unit The fire alarm input can be configured to normally open or normally closed All dampers must be wired to the same output in order to get correct results Select if fire alarm should be normally closed or normally open and activation of fire damper exercising if the unit should be stopped or not No Yes unit running Yes unit stopped Set the parameters for damper exercise in the submenu Running time is the time the damper actuator needs to open or close Hour for exercise is the hour of the day at which you want the function to be run For detailed description of damper exercising see section 6 6 Damper control 18 16 Humidity control Humidity control can be configured as either humidification or dehumidification or as combined humidification dehumidification These settings are for the digit
118. r later the initiation must be made via CASE flexotron see the CASE flexotron manual After initiating the expansion units and setting the master controller all inputs and outputs are available for configuration in the master controller under 150 175 P100013557 flexotron800 P100013557 SAUTER Configuration Configuration Inputs Outputs the expansion units in outputs are named Exp1 Exp2 Frequency converters Up to two separate Vacon NXL Lenze SMV Omron V1000 Emerson Commander LS iG5a LS S7 EBM PABST Danfoss FC 101 frequency converters can be controlled via Modbus communication Miscellaneous alarms and indications can be read from the frequency converters For a complete list of alarms see the alarm list For communication addresses see the flexotron800 variable list Information is also available at the end of this manual The flexotron800 Modbus settings are listed below They are not adjustable and must also be set in the Vacon NXL Lenze SMV Omron V1000 Emerson Commander LS iG5a LS iS7 EBM PABST Danfoss FC 101 frequency converters Modbus address Supply air fan 1 Extract air fan 2 Speed 9600 bps 1 stop bit no parity For additional settings for every model see Appendix 1 at the end of this document Expansion unit and frequency converters Frequency converters can be used in combination with expansion units on the same port The master controller will switch the p
119. rgy 8 Outdoor compensated extract air control The extract air temperature can be compensated when the outdoor temperature increases One can for instance imagine accepting a slightly higher extract air temperature if it is warm outside or conversely a slightly lower extract air temperature if it is chilly This function is included to conserve energy In and outputs 1 2 3 4 5 6 7 8 Control mode Al Al Al Al Al Al Al Al Supply air sensor Al Al Al Al Al Outdoor temperature sensor Al Al Al Room sensor Al Al Al Extract air sensor AO AO AO AO AO AO AO AO Y1 Heating 0 10 V DC AO AO AO AO AO AO AO AO Y2 Exchanger 0 10 V DC AO AO AO AO AO AO AO AO Y8 Cooling 0 10 V DC AO AO AO AO AO AO AO AO Y4 Extra sequence 0 10 V DC AO AO AO AO AO AO AO AO Extra split Y1 Y2 or Y3 0 10 V DC optional AO AO AO AO AO AO AO AO Y1 Heating Y3 Cooling DO DO DO DO DO DO DO DO Change over option DO DO DO DO DO DO DO DO Heating 3 pos increase DO DO DO DO DO DO DO DO Heating 3 pos decrease DO DO DO DO DO DO DO DO Exch 3 pos increase DO DO DO DO DO DO DO DO Exch 3 pos decrease DO DO DO DO DO DO DO DO Cooling 3 pos increase DO DO DO DO DO DO DO DO Cooling 3 pos decrease Choose output type depending on the actuator type Either AO 0 10 V or DO 3 position increase decrease P100013557 47 175 S AUTE R flexotron800 Functional description 6 1 3 Heater types 6 1 3 1 Water heating Control When
120. rm Therefore for such alarm types the program will always reset the stop function to Active even if the operator should choose Inactive Unfortunately it is not possible to remove the display text concerning the stop function for these alarm types This since the available program space demands that all alarms are treated in the same way in the display 73 175 SAUTER Functional description 0 6 9 4 Alarm text 74 175 flexotron800 For alarms that have been set to Inactive the extra stop function should also be set to Inactive or unexpected malfunctions may occur The alarm text that should be shown in the display when there is an alarm can be changed using CASE flexotron For more information see the CASE flexotron manual In and outputs DO Sum alarm A B C DO Sum alarm A DO Sum alarm B C P100013557 flexotron800 SAUTER Starting and stopping the unit 7 Starting and stopping the unit 7 1 Start conditions The unit will be started and will run when any one of the following conditions is met 1 Timer output for normal speed or timer output for reduced speed is ON 2 The unit is started manually using the flexotron800 front panel 3 Digital input for extended running is activated 4 Support control is activated and the present room temperature is higher lower than the preset starting value Support heating cooling 5 Demand controlled ventilation is activated and the value
121. ropriate in and outputs Delivery setting On delivery all physical in and outputs have already been bound to a signal The delivery settings are suggestions only and can easily be changed 18 1 1 Analogue inputs Al All analogue inputs are for Ni1000 or 0 10 V Input signals can be compensated e g for wiring resistance The raw value will show the actual uncompensated input value If inputs have been assigned to pressure or flow control of fans alternatively humidity or CO2 control the following menus will appear 126 175 P100013557 flexotron800 18 1 2 Digital inputs DI SAUTER Configuration Set the parameter values that should correspond to the input signal levels 0 V and 10 V The filter factor is the damping you want the program to work with in order to reduce the influence of potential signal fluctuations on the sensor input The filter factor can be changed via the display or CASE flexotron and is found after analogue inputs in configuration A new value is calculated using the following formula To simplify adaptation to external functions all digital inputs can be configured to be either normally open NO or normally closed NC The inputs are as standard normally open i e if the input is closed the function connected to the input in flexotron800 is activated Be careful when changing the input from NO to NC since some digital functions can be configured to either NO or NC themselves
122. rror Extract Air Fan control error Supply Air Fan external operation Extract Air Fan external operation Ventilation Manual mode Manual supply air control Manual supply Air Fan mode Manual Supply Air Manual Extract Air Fan mode Manual Extract Air Manual Heater Control Manual exchanger control Manual cooler control Manual P1 Heater Manual P1 Exchanger Manual P1 Cooler Fire damp Manual Internal battery error Sensor error Supply Air temp Sensor error Extract Air temp Sensor error Room temp 1 Sensor error Room temp 2 Sensor error Exhaust air temp Sensor error Extra sensor Sensor error SAF pressure Sensor error EAF pressure Sensor error Deicing temp Sensor error Frost Protection temp Sensor error CO2 Sensor error Humidity Room Sensor error Humidity Duct Sensor error Extra unit temp Sensor error External control SAF Sensor error External control EAF Sensor error SAF Pressure 2 Pri O Ol O IOs O Ol O 04 O O O O O MA O MUA v MUA CO MUA 00 MUA gt 0 O WU UU uu flexotron800 Description Exchanger de icing activated by de icing sensor Exchanger rotation sentinel alarm activated Fire damper exercise test failed Supply air pressure deviates too much from the setpoint for too long Extract air pressure deviates too much from the setpoint for too long SAF run signal received when unit is stopped EAF run signal received when unit is stopped The unit is in manual mode Supply
123. run for at least 5 minutes Permits configuration of all alarms Select the appropriate alarm number from the alarm list The alarm text for the alarm will be displayed and the alarm priority can be set A alarm B alarm C alarm or not active The extra stop function gives for each alarm the option to stop or not stop the unit on alarm activation P100013557 flexotron800 18 28 1 Alarm text P100013557 SAUTER Configuration The alarm text that should be shown in the display when there is an alarm can be changed using CASE flexotron For more information see the CASE flexotron manual Alarm list The alarm text and priority columns show the factory set values a ff ON O 10 11 12 13 14 15 16 117 18 11 20 21 22 23 24 25 26 2m Alarm text Run Error Supply Air Fan Run Error Extract Air Fan Run Error P1 Heater Run Error P1 Cooler Run Error P1 Exchanger Filter guard 1 Flow switch External frost guard Deicing pressure guard Fire alarm External switch External alarm Supply Air control error Humidity control error High supply air temp Low supply air temp Supply air temp max Supply air temp min High room temp Low room temp High extract air temp Low extract air temp Electric heating is overheated Frost risk Low frostguard temp Low efficiency Sensor error Outdoor temp Pri Description B Dn u DW ius WUO gt i
124. ry and are downloaded to the work memory If a flexotron800 via CASE flexotron has been reloaded with a newer program revision than the factory revision the 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 18 31 2 Choose start display the text normally shown on the display There are five different to choose from Type 1 The text on the first line can be changed using CASE flexotron The second line shows the date and time The third line shows the present running status The fourth line shows the present temperature setpoint and actual values Type 2 The first line shows the date and time The second line shows the present running status The third line shows the present temperature setpoint and actual values The fourth line shows the present temperature control output values P100013557 157 175 SAUTER Configuration flexotron800 Type 3 The first line shows the date and time The second line shows the present running status The third line shows the present temperature setpoint and actual values The fourth line shows the present SAF and EAF pressures Lo p a The text on the first line can be changed using CASE flexotron The second line shows the date and time The third line s
125. s FE AO 30 AI3 Frost protection sensor 18 AO1 Y1 actuator for heater 29 Al4 Setpoint for room temperature 19 AO2 Y2 actuator for HRec 20 AO3 Y3 actuator for cooler 34 175 P100013557 flexotron800 SAUTER Installation and wiring 4 7 Wiring diagram RDT808 Configuration 808 fixed value See also picture of terminal positions on page 21 LS Power supply 24 V AC 15 50 60 Hz 1 D RS485 Modbus not with web TCP IP or 24V DC models MM 2 D Earth conductor 3 C IE 43 24V 24 V DC Reference point for digital inputs DI 4 E 42 LS Reference point for digital outputs DO 41 DO1 Heating coil pump 40 DO2 Supply air fan level 2 34 Reference potential for analogue inputs Al 9 Dit External OFF switch 33 Alt Outdoor temperature sensor 10 DI2 Frost protection facility 32 Al2 Sensor for supply air temperature 11 DI3 Supply air fan on 17 Reference potential for analogue outputs H o 18 AO1 Actuator for heater Y1 P100013557 35 175 SAUTER Installation and wiring flexotron800 4 8 Empty wiring diagram RDT828 LS Power supply 24 V AC or 24 V DC 1 D RS485 Modbus not with web TCP 15 50 60 Hz IP models MM 2 D Earth conductor 3 C IE 43 24 V 24 V DC Reference point for digital inputs DI 4 E 42 LS E
126. s can be used to control lighting doorlocks etc 14 1 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 P100013557 107 175 S AUT E R flexotron800 Time settings 14 2 Timer Normal speed There are eight 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 1 1 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 both days must be entered 108 175 P100013557 flexotron800 S AUT E R Time settings 14 3 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 eight 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 14 4 Extended running Digital inputs can be used to force the unit
127. signals are used for supply and extract air and two separate analogue input signals for supply and extract air for pressure transmitters The fan speeds are controlled via frequency converters thereby maintaining constant pressure The pressure transmitter inputs are scalable using Min volt input Vmin and Max volt input Vmax A digital activation signal is normally used for each fan Start SAF frequency converter and Start EAF frequency converter for sending a start signal to the frequency converters The start signal is activated as long as the fan is expected to be running For the supply and extract air fans there are two individually settable setpoint values one corresponding to normal speed and one corresponding to reduced speed Changing between the two setpoint values is done using the timer channels for normal and reduced speed or using digital input signals Extended Operation Normal and Extended Operation Reduced Outdoor compensation When running pressure control it is also possible to outdoor compensate the pressure setpoint value The outdoor compensation is linear and is set using two parameter pairs which give the value of the compensation at two different outdoor temperatures The compensation can be positive or negative The outdoor compensation is set in the menu Actual Setpoint Using CASE flexotron you can also choose to only outdoor compensate the pressure value of th
128. tivated O This should be done with consideration since no alarm is continuously given that a certain level has been activated However it is very useful in certain cases if the unit is intended to be used by educated personnel or for instance at commissioning P100013557 85 175 S AUTE R flexotron800 86 175 P100013557 flexotron800 S AUT E R Running mode 10 Running mode Collected here are a number of menus showing running mode selected functions alarm events and status of inputs and outputs A complete overview of the menu structure is available in section 20 Menu structure 10 1 Running mode unit The unit s running mode can be changed without logging on 10 2 Selected functions Shows the present configuration These are read only menus No changes can be made here P100013557 87 175 S AUT E R flexotron800 Running mode 10 3 Alarm events 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 section 19 1 Alarm handling 88 175 P100013557 flexotron800 S AUT E R Running mode 10 4 Inputs Outputs This is a read only menu block showing the present values for all configured inputs and outputs If correction factors have been applied to input values the corrected values will be shown This is a read only menu No changes can be made here
129. 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 zero the unit will only run as long as the digital input is closed P100013557 109 175 SAUTER Time settings flexotron800 14 5 Timer outputs 1 5 14 6 Holidays 110 175 Up to 5 digital outputs can be used as timer controlled outputs Each with individual week schedules with two activation periods per day Each output has eight separate setting menus one for each weekday and one extra for holidays Holiday schedules take precedence over other schedules Only the time channels which have been configured e have been wired to a digital output will be shown If the function Recirculation has been configured see 6 1 12 Recirculation Timer output 5 can be used to control start stop of the recirculation function Up to 24 separate holiday periods for a full year can be set A holiday period can be any number of consecutive days from 1 365 The dates are in the format MM DD When the present date falls within a holiday period the scheduler will use the settings for the weekday Holiday P100013557 flexotron800 15 Manual Auto P100013557 SAUTER Manual Auto General In this menu the running mode of all the configured outp
130. trol function room control or extract air temperature control it is possible to utilise support heating and or support cooling Free cooling e 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 AS SAUTER About flexotron800 18 175 flexotron800 Free heating e If the outdoor temperature is higher than the indoor temperature and there is a heating demand the recovery damper will not open for recovery but instead open fully for outdoor air This may occur during low night time outdoor temperatures when the room has been cooled considerably and the outside heat is rising faster than indoors This function is activated at the same time as Free cooling Enthalpy control e 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 Pretreatment Damper and pump control for preheating or precooling of the outdoor air via an underground intake channel Enthalpy control for free cooling heating e This function is used to override the mixing damper to increasing recirculation depending on the result of the enthalpy calculation Cooling recovery e If the extract air is colder than the outdo
131. ts The compensation can be positive or negative The same compensation normally applies to both fans Using CASE flexotron you can choose to compensate only the supply air fan The same compensation is applied to both Normal and Reduced which means that you need to take caution when using this function so the pressure does not become too low or even negative when running reduced speed Depending on the choice of fan control different combinations of the menus below will be shown Pressure control SAF there are corresponding menus for EAF Submenu Setpoint Submenu Outdoor compensation 99 175 S AUT E R flexotron800 Air control Submenu Extra compensation curve Submenu Controller output compensation if cooling Submenu Controller output compensation if heating The compensation follows the current control quantity in this case pressure Submenu Controller output compensation Submenu Compensation only when Flow units can be measured in both m3 h cubic meters per hour and in CFM cubic feet per minute 100 175 P100013557 flexotron800 S AUT E R Air control Flow control SAF there are corresponding menus for EAF Submenu Setpoint Submenu Outdoor compensation Submenu Extra compensation curve Submenu Controller output compensation if cooling Submenu Controller output compensation
132. ttable constants dependent on the fan size and A P is the differential pressure measured in Pa over the fan Each fan has its own set of parameters X is normally 0 5 indicating that the flow is proportional to the square root of the differential pressure Outdoor compensation Also when running flow control it is possible to outdoor compensate the setpoint value The outdoor compensation is linear and is set using two parameter pairs which give the value of the compensation at two different outdoor temperatures The compensation can be positive or negative The outdoor compensation is set in the menu Actual Setpoint 65 175 SAUTER Functional description flexotron800 Using CASE flexotron you can also choose to only outdoor compensate the flow of the supply air fan In that case the extract air fan is controlled using constant flow independent of the outdoor temperature Extra compensation curve As a complement to the above outdoor compensation there is a function called Extra compensation curve which can be used to set a compensation based on the room extract air or supply air temperature The curve has three parameter pairs which correspond to the value of the compensation at three different temperatures 6 4 3 Frequency control manual Frequency controlled fans can be controlled at a fixed rotational speed The rotational speed is selected by setting a fixed output signal 0 100 Values for normal
133. ture control of exchanger can be set For detailed description of exchanger alternatives see section 6 1 4 Heat exchanger 133 175 S AUT E R flexotron800 Configuration 18 10 Chiller Select chiller type Water DX DX with exchanger control or Not used For detailed description of DX cooling see section 6 Functional description If DX cooling has been configured there are submenus for setting of certain operation parameters 18 10 1 Min limit lowering If DX cooling is used in combination with room or extract air control the supply air temperature minimum limit value can be lowered to give smoother more continuous running of the chillers The set lowering of the limit value is activated when the DX cooling is running This parameter is also used for setting the lowering of the cooling setpoint when running DX cooling with exchanger control See section 6 Functional description 18 10 2 Blocking the DX cooling at low outdoor temp Outdoor temperature dependent blocking of DX cooling is individually settable for each cooling step If the outdoor temperature is below the set value it is not possible to activate the cooling step The function has a 1K hysteresis i e if a cooling step is blocked it can only be activated again when the outdoor temperature has risen to 1K above the set value 134 175 P100013557 flexotron800 S AUT E R Configuration 18 10 3 Blocking of DX cooli
134. ty 36 DO6 Heat demand 11 DI3 Supply air fan on 35 DO7 Not used 12 DI4_ Not used 13 DI5 Heating coil pump on 34 Reference potential for analogue inputs Al 14 DI6 Filter monitor 33 Al1 Outdoor temperature sensor 15 DI7 Not used 32 Al2 Supply air temperature 16 DI8 Return air fan 31 E Reference potential for analogue inputs Al 30 AI3 Frost protection sensor 17 E Reference potential for analogue outputs AO 29 Al4 Return air temperature 18 AO1 Y1 actuator for heater 19 AO2 Y2 actuator for HRec 28 E Reference potential for universal inputs Ul 20 AO3 Y3 actuator for cooler 27 UI Room humidity 21 AO4 Not used 26 Ul2 Setpoint for room temperature 22 AO5 Humidity 25 Reference potential for universal inputs UI 24 UIS Supply air humidity 23 Ul4 Not used 32 175 P100013557 flexotron800 SAUTER Installation and wiring 4 5 Wiring diagram RDT815 Configuration 815 cascade control See also picture of terminal positions on page 21 LS Power supply 24 V AC 15 50 60 Hz 1 D RS485 Modbus not with web TCP IP or 24V DC models MM 2 D Earth conductor 3 C IE 43 24V 24 V DC Reference point for digital inputs DI 4 E 42 LS Reference point for digital outputs DO 41 DO1 Heating coil pump 40 DO2 Supply air fan level 1 39 DO3 Supply air fan level 2 38 DO4 Collective alarm 9 DI1 External OFF sw
135. ures are not within the start and stop temperature intervals After three minutes the stop conditions will be controlled 56 175 P100013557 flexotron800 S AUTE R Functional description Stop conditions e Outdoor temp above the set max value 18 C or below the set min value condensation risk 10 C e The room temp extract air temp is below the set stop value 18 C e The timer outputs for normal speed Extended running Normal or External switch are On e Itis past 07 00 00 in the day If any stop condition is fulfilled after three minutes the unit will stop again Otherwise operation will continue until a stop condition is fulfilled When free cooling is active the fans run at normal speed or the set value for pressure flow control and the digital output Free cooling operation is active The outputs Y1 Heating Y2 Heat exchanger and Y3 Cooling are shut down After free cooling has been active the heating output is blocked for 60 minutes configurable time In and outputs Al Outdoor temperature sensor or Intake temperature Al Room sensor or Extract air sensor DO Free cooling operation 6 1 8 Cooling recovery If the cooling recovery has been configured there is a cooling requirement and the extract air temperature is a settable amount lower than the outdoor temperature cooling recovery can be activated When cooling recovery is activated the heat exchanger signal will be
136. ut signals and a number of control functions can be manually controlled This is a very handy feature which simplifies the checking of individual functions in the flexotron800 The running mode for the whole unit is set in the menu Running mode See section 10 Running mode The supply air controller s output signal can be manually set MANUAL AUTO to any value between 0 and 100 The temperature output signals will change accordingly if they are in Auto mode It is also possible to manually control each of the temperature output signals individually All the configured digital outputs can be set to AUTO OFF or ON Since leaving any of the outputs in manual control will disrupt the normal control an alarm will be generated as soon as any output is set to a manual mode Since the menus vary according to the configuration of the outputs only the most common ones will be shown here For the digital signals you can normally choose between AUTO and ON and OFF or similar words indicating the two possible manual states of the digital output MANUAL AUTO Supply air controller running mode can be set to AUTO ON or OFF In manual On mode the output signal can be set 0 100 The outputs Y1 Y2 and Y3 if in AUTO mode will follow the signal according to the set split values Start signal SAF and EAF Can be set to MANUL 1 1 speed MANUAL
137. verter can be added for calculating the total output If for instance power loss is 5 the total output will be as follows A daily and a monthly average always 30 days are also computed and presented in the display and in CASE flexotron SFP for the average values is calculated only when the unit is running The display image is located under the menu Running mode Running mode unit P100013557 flexotron800 S AUTE R Appendix 22 Appendix 22 1 Frequency converters Version 3 3 of flexotron800 ventilation supports the frequency converters listed below e Vacon NXL e Lenze e Omron V1000 e Emerson Commander e LS e EBM e Danfoss FC 101 When communicating via frequency converters through Modbus it is sometimes necessary to change certain settings in the frequency converter Below are described what settings are necessary in the various models Vacon NXL No settings necessary Lenze No settings necessary Omron V1000 Connected via RS485 e R is connected to S e R is connected to S e R S is connected to B on port 1 or 2 e R S is connected to A on port 1 or 2 Parameters The following parameters must be set from the display of the frequency converter e H5 01 0x425 Slave address set to 1 for Supply air fan and 2 for Exhaust air fan e H5 07 0x42B RTS Control set to 1 enabled for activation of RS485 e 01 03 0x502 Frequency reference units set to 1 for 0 100 e H5 03 0
138. x427 Parity set to 0 no parity Default values should be used for remaining parameters The following values may not be changed e H5 02 0x426 Communication speed default 3 9600 e H5 04 0x428 Stopping method after communication error default 3 no stop e H5 11 0x43C Communication Enter Function default 1 Enter command not necessary P100013557 171 175 SAUTER Appendix 172 175 flexotron800 e H5 12 0x43D Run command default 0 bit O forward start stop bit 1 reverse start stop e b1 01 0x180 Frequency Reference selection 1 default 2 via Modbus e b2 01 0x181 Run command selection 1 default 2 via Modbus Emerson Commander Connections RS485 RJ45 e RJ45 2 orange is connected to B on port 1 or 2 e RJ45 7 white brown is connected to A on port 1 or 2 e Eventual termination resistor is connected between RJ45 1 white orange and RJ45 8 brown If Modbus communication is not initialised after powering up disconnect the termination resistor and try again Terminals e Connect terminal B4 Drive enabled to B2 24V e Connect terminal B5 Forward to B2 24V Parameters The following parameters must be set from the display of the frequency converter e 44 Slave address set to 1 default for Supply air fan and 2 for Exhaust air fan e 43 Baud rate 9 6 default 19 2 e Default values should be used for remaining parameters Changing parameters e Deactivate t
139. y the same analogue output Y2 Heat exchanger or by two digital outputs Exchanger 3 pos actuator increase and Exchanger 3 pos actuator decrease and are wired so that one opens as the other closes De icing De icing is activated either when the digital input signal De icing exchanger is activated or when the value of the analogue input Deicingtemp falls below the de icing limit 3 C It is deactivated when the digital input is reset or the analogue input rises above the limit value plus a settable differential On de icing A Pl controller compares the de icing setpoint with the signal De icing Exchanger The lesser of the output signal from this controller and the output from the ordinary controller is used as output to the dampers 6 1 4 2 Rotating exchanger 50 175 Control Rotational speed is controlled by the analogue signal Y2 Heat exchanger or by two digital outputs Exchanger 3 pos actuator increase and Exchanger 3 pos actuator decrease A rotation sentinel can be connected to the digital input Rotation sentinel Exchanger An alarm is generated if this input is activated at the same time as the analogue output signal is higher than 1 0 V P100013557 flexotron800 S AUTE R Functional description 6 1 4 3 Liquid connected exchanger Control A mixing valve in the exchanger circulation system is controlled by the analogue signal Y2 Heat exchanger or by two

SAUTER flexotron800 V2 Ventilation V3.3

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