The application module room thermostat solo, FM is placed on a flush-mounted bus coupler. The room thermostat is used for individual room temperature control in heating and air conditioning systems. The controller can issue a switching (PWM control) or a continuous actuating signal. Comfort mode, standby mode, night operation or frost/heat protection mode can be preselected via the EIB. The setpoint values can be parameterised. The LC display provides information about the current temperatures and the operation mode as well as the time and date. The 2 rockers can be used to carry out a setpoint adjustment or a change in the operation mode. In addition, a cover frame in the chosen colour in either the Solo or future design is required as well as a flush-mounted bus coupler. Technical Data Power supply EIB 24 V DC, via the bus line Operating and display elements LC display To display the operation mode, temperature, date and time 2 rockers, each with 2 push button contacts 2 LEDs green Connections Bus coupler FM (6120U-102) 10-pole plug connector Type of protection IP 20, EN 60 529, mounted on the bus coupler Protection class II Measuring range Room temperature 0 C 40 C Ambient temperature range Operation - 5 C 45 C Design solo future Colour savanna / ivory savanna / ivory davos / studio white davos / studio white manhatten / graphite manhatten / graphite samoa / light green stone / light grey toscana / crimson red attica / blue-grey Mounting clipped onto flush-mounted insert Dimensions 63 x 63 x 23 mm (H x W x D) Weight 0.01 kg Certification CE norm EIB-certified in accordance with the EMC guideline and the low voltage guideline 2-2 March 2003
Application programs Number of Max. number of Max. number of communication objects group addresses associations Continuous / Switch Heat Cool TP/4 20 20 21 Circuit diagram 1 4 2 5 3 1 Bus cable 4 Application module 2 Bus terminal 5 10-pole plug 3 Bus coupler FM March 2003 2-3
Continuous / Switch Heat Cool TP/4 Selection in ETS2 ABB Heating Thermostat The application program is intended for the application module room thermostat solo. The room thermostat is able to use various operating modes and setpoint values to heat or cool a room. They can be selected and modified via the bus or via the rockers. A green LED is available for each of the two rockers. They can be permanently switched on or off via the parameter Function of LED. Various communication objects are displayed or hidden depending on the parameter settings. LC display The room thermostat has an LC display. The current room temperature (actual value) is displayed by default. By modifying the parameter Temperature display in normal operating mode, it is possible to display the current setpoint or the relative setpoint which is produced by setpoint adjustment via rocker 1. Alternatively, the display can be deactivated completely. In addition, the current operating mode and/or the time and date can be read in the LC display using various symbols. The display of the time and date is dependent on the parameters for the info lines. The time and date are not displayed by default. If e.g. the current time or date should be read in the info line, the parameter Content of info line should be set accordingly. In addition, the group address Time and/or Date must be linked with the corresponding object of the room thermostat. The time and date can e.g. be sent by a visualisation terminal or a clock with a DCF77 receiver. The setting Display of heat/cool is active describes when the symbols Heat or Cool are displayed. The setting when heating or cooling is required means that the symbols are also displayed if the frost or heat protection mode is active. In the setting if operation mode is active, the symbols are displayed if heating or cooling is actually being carried out. The LCD can be lit if required. The parameter LCD lighting is available for this purpose. It is thus possible for the LCD lighting to be always switched on or off or to use the lighting depending on the communication object Backlighting for display. Operation modes The room thermostat has four operation modes: Frost protection mode: The room thermostat is out of service; heating is only carried out if the room temperature drops so low that there is a risk of the heating installation freezing. Comfort mode: The setpoint for the room temperature is set to a value which enables normal use of the room at a pleasant temperature. Standby mode: The room temperature drops so low (e.g. during periods of absence) that the heating costs are saved. The comfort temperature can however be reached again quickly. Night operation: The room is not used for long periods during the night; the room temperature is reduced to a pleasant temperature during the night and can be raised relatively quickly again in the morning. Night Comfort Frost/heat object object protection object Frost prot. 1 Comfort 1 0 Night 1 0 Standby 0 Operation mode 2-4 March 2003
It is possible to switch between these operation modes using switching telegrams (see also the diagram of the operation modes). The frost/heat protection mode has the highest priority i.e. it is not possible to switch to another operation mode in this case. The frost/heat protection mode must first be deactivated i. e. by closing an opened window. Comfort mode has the next highest priority followed by night operation. If none of these three operation modes are active, the room thermostat is in standby mode. Party time (comfort extension) If the room thermostat is switched to night operation via the bus, it is possible to active party time by pressing the right side of rocker 2 (changes to comfort mode). Once the party time has elapsed, the thermostat switches back to night operation. During the party time, the symbols for night operation and comfort mode are shown on the display. By pressing the left side of rocker 2, the party time can be manually reset to night operation. This function can also be used for the temporary deactivation of heat and frost protection modes. As during night operation, the device switches to comfort mode for the set period. The switching on and off of the function is carried out in the same way. During this comfort extension, the symbols for frost protection and comfort are indicated on the display. Setpoints The following setpoints can be set for the heating mode: Base setpoint in C (16..35) (comfort temperature), Reduced heating in standby mode in K (1..8), Reduced heating during the night in K (1..12) and Setpoint frost protection in C (5..10). The comfort temperature for the cooling mode can be set via the Insensitive range between heat and cool in K (1-10). The setpoints for standby and night operation refer to this value: Increased cooling in standby mode in K (1..8) and Increased cooling during the night in K (1..12). If cooling should take place at 25 C e.g. with a base setpoint of 22 C in comfort mode, an insensitive zone of 3 C must be set. If cooling should then take place in standby mode at 27 C, the value must be increased by 2 C. An increase of 4 C is required for cooling during night operation from 29 C. To prevent the uncontrolled overheating of rooms, it is possible to preselect a setpoint for heat protection mode to specify when cooling should take place. If heat protection is not required, the cooling can be switched off. In this case, the value 99.9 C is shown on the display on receipt of an On telegram at the frost/heat protection object instead of the current setpoint and the value 99.84 C is sent on the EIB. The base setpoint can be modified via the bus as often as required. To do so, a 2 byte temperature value must be sent to the object Base setpoint. The setpoint temperature can be manually changed with the first rocker. The parameters Range for manual setpoint selection, Maximum increase of setpoint for heating and Maximum reduction of setpoint for cooling specify the scope for changing the setpoint. If a new telegram is sent to the communication object Base setpoint after a manual setpoint adjustment, it is thus also possible to reverse the manual setpoint adjustment again. Heat / Cool So that the room thermostat can address the various controller types for heating or cooling mode, it can be parameterised as a continuous or switching controller. In the case of a switching controller, it is possible to choose between a PWM controller and a 2-step controller. In the case of a continuous control response and a switching PWM controller, the preset control parameters can be used via the system type of the heating or air conditioning system. If other control parameters are required, they can be set individually via more detailed parameterisation. This should only be used if you have sufficient experience in the control technology. March 2003 2-5
Temp. Nachtbetrieb Betrieb Frost/Hitzschutz- Sollwert Hitzeschutz Komfortbetrieb Standbybetrieb Sollwerte Kühlen Sollwerte Heizen Regler kühlt, wenn Istwert > Kühlen Sollwert Anhebung Nacht Anhebung Kühlen Standby Kühlen Totzone zwischen Regler fordert keine Leistung Heizen und Kühlen ( Stellgröße = 0 ) Absenkung Standby Basis-Sollwert Heizen Absenkung Nacht Heizen Regler heizt, wenn Istwert < Heizen Sollwert Sollwert Frostschutz Sollwerte in den verschiedenen Betriebsarten, wenn Heizen und Kühlen aktiv The continuous controller issues its control value to a 1 byte object. To protect electrothermal valves which are connected to heating actuators with PWM control, it is advisable to limit the dynamic range. This is carried out via the parameter Minimum control value or Maximum control value. If e.g. a maximum control value of 80% is preset, the thermostat always automatically sends the value 255 when a control value of 204 has been exceeded. To prevent unnecessary loading of the bus, it is possible to specify the size that the change at the control value must reach in order to be sent on the bus. The setting is carried out as a percentage value. The sending of the control value is also restricted by a cyclic period if it has not been changed. This cyclic period should not be too short (e.g. every 10 min). In the case of a switching PWM controller, the output value of the controller (0...255) is converted into ON/OFF control. If e.g. a control value of 70% should be sent, the ON time should be set at 7 minutes and the OFF time at 3 minutes with a preset cyclic period of 10 minutes. The dynamic range can be restricted as with the continous controller. To optimise the control characteristics of the heating or cooling system, the Cyclic time of the switching control value can be set. The type of heating or cooling as well as the valve drive used must be taken into account when setting the cyclic time. The following recommendations can be implemented: a)electrothermal valve drive To open a thermoelectric valve drive fully takes approx. 2-3 minutes. A shorter cyclic time than 15 minutes is therefore not advisable. b)floor heating The time constant for floor heating is very large. A cyclic time of 20 minutes is therefore sufficient. c) Warm water heating Thermoelectric valve drives are often used in this case. A cyclic period of 15 minutes produces extremely good results. d)electric convector heating Cyclic times between 10 and 15 minutes are recommended, depending on the electric heating and conditions in the room. If a 2-step controller is used for heating or cooling control, it is possible to select various levels for the hysteresis by which the setpoint fluctuates. For example, if the setpoint during heating mode is at 20 C and the hysteresis is at 0.5 K, the controller switches on at 19.5 C and off again at 20.5 C. The hysteresis is then based on how quickly the heating system can warm up the room or how quickly the cooling system can lower the temperature in the room as well as the customer s sensitivity to temperature levels. 2-6 March 2003
The hysteresis should not be set too low as otherwise the valve drive continually opens and closes. It should also not be set too high as the temperature fluctuations in the room are then fairly considerable. The parameter Reduction of hysteresis is used to increase the level of accuracy of the controller. If this parameter is activated, the hysteresis is reduced for example every minute by 0.1 K until it reaches 0 K, if required. There is effectively a decrease in the temperature fluctuations during the closed-loop control as a result of the reduction in the hysteresis. If a reduction should be used, it is advisable to set it at less than a fifth of the hysteresis. e.g. Hysteresis 0.5 K => Reduction < 0.1 K/min In certain cases (floor heating), it can be necessary to install a fast-acting additional level for the heating control in order to be able to heat the room up quickly. In the setting 2-step heating, the room thermostat can control a second heating system via a switching controller (1 bit) or via a semicontinuous controller with the 1 byte values of 0% and 100%. With the parameters Difference between basic heating and additional heating and Hysteresis (one-sided), it is determined when the additional level is switched on and when it is switched off. Automatic shading To prevent the room from warming up due to sunlight, automatic shading can take place by lowering one or several blinds. The shading object Move is used for this purpose. The parameter Automatic shading... determines at which temperature the blinds should be lowered. If the temperature again falls below the set shading temperature, no command is issued to raise the blinds. The blinds can be raised e.g. at a specific time using a central command. Group master mode In large open-plan offices for example, it can be difficult to achieve a good level of control throughout the room with only one room thermostat. For these cases, it is possible to divide the room into several zones with a room thermostat in each zone. So that these thermostats always use the same setpoint value, it is possible to activate the parameter Group master mode for one of the devices. This device then has the 2 byte communication object Base setpoint for slaves - Telegr. temperature which is linked to the 2 byte communication objects Base setpoint - Telegr. temperature of the other devices. The manual setpoint adjustment should be disabled for these devices. As some valve drives close following a 1 byte value of 255 or a 1 bit value of 1 and open at other corresponding values, the Mode of control output can be inverted. The toggling between heating and cooling is carried out automatically by the room thermostat. If this is not required, the Toggle between heat and cool can be carried out by an external, central controller via the 1 bit object Operation mode - Heat/Cool. In this setting, the heating or cooling symbols are permanently visible during the corresponding operation mode. The object is enabled via the parameter Toggle between heat and cool. March 2003 2-7
Offset If the measured temperature becomes invalid because the bus coupler itself has warmed up, it is possible to set an Offset for temperature measurement.... The installation site of the thermostat and the suitable selection of parameter settings is a decisive factor in accurate temperature measurements. Communication objects for heating and cooling, with switching control values No. Type Object name Function 1 1 bit Backlighting for display Switch 3 1 bit Operation mode Frost/heat protection 4 1 bit Operation mode Night operation 5 1 bit Operation mode Comfort mode 6 1 bit Control value Heat (switching) 7 1 bit Control value Cool (switching) 8 2 byte Actual temperature Telegr. actual temperature 9 2byte Base setpoint Telegr. temperature 10 2 byte Current setpoint Telegr. temperature Communication objects for display of time and date, automatic shading, 2-step heating, continuous control values No. Type Object name Function 2 1 bit Autom. shading Telegr. move Up-Down 6 1 byte Control value Heat (continuous) 7 1 byte Control value Additional heating (continuous) 12 3 byte Info line Date 13 3 byte Info line Time and day Communication objects for heating and cooling with, external toggling of operation mode, active group master mode No. Type Object name Function 6 1 byte Control value Heat (continuous) 7 1 byte Control value Cool (continuous) 10 2 byte Base setpoint for slaves Telegr. temperature 11 1 bit Operation mode Heat/cool 2-8 March 2003
Parameters The default setting for the values is printed in bold type. General: Function of rocker 1 no function setpoint adjustment Function of LED 1 always OFF green orientation light Function of rocker 2 no function toggle between standby/comfort Function of LED 2 always OFF green orientation light LCD lighting always ON always OFF acc. to object value (1=ON, 0=OFF) acc. to inverted object value, e.g. for night operation Content of info line line is empty date time alternate date and time Only if display of date and time is selected: Change interval for info line 2 s / 4 s / 6 s / 8 s Day format German (MO, DI, MI, DO, FR, SA, SO) English (MON, TUE, WED, THU, ) Date format German (TT.MM.JJ) English (MM.TT.JJ) Controller general: Used control functions Heating and cooling Heating 2-step heating Party time (comfort extension) inactive 30 min 1 hour 1.5 hours 2 hours 2.5 hours 3 hours 4 hours Frost/heat protection can be manually enabled selected (comfort extension) disabled Temperature display in normal actual value operating mode current setpoint no temperature display rel. current setpoint (+/ K) Temperature display in adjustment setpoint temperature mode rel. current temperature (+/ K) Display of heat/cool is active when heating or cooling is required if operation mode is active Operation mode after reset Comfort Standby Night Frost/heat protection Automatic shading inactive (see also Setpoints ) active Group master mode inactive active March 2003 2-9
Parameters The default setting for the values is printed in bold type. Room temperature: Change of current setpoint for inactive automatic sending at 0.2 K at 0.4 K at 0.6 K at 2.0 K Send current setpoint if changes inactive active Cyclic time for autom. sending no cyclical sending of temp. difference every 3 min every 20 min every 30 min every 60 min Offset for temperature measurement 128 0 127 (change in measured value by (-128 127)x0.1 K) Detection of actual temperature internally externally Setpoints: Base setpoint in C (16 31) 21 C (comfort temperature for heating) Reduced heating in standby mode 4 K in K (18) Reduced heating during the night 4 K in K (18) Setpoint frost protection in C (510) 7 C Only for heating and cooling: Insensitive range between heat 4 K and cool in K (1 8) Increased cooling in standby mode 2 K in K (1 8) Increased cooling during the night 4 K in K (1 8) Setpoint heat protection cooling disabled / 30 C / 35 C / 40 C / 44 C Toggle between heat and cool automatically externally 2-10 March 2003
Parameters The default setting for the values is printed in bold type. Heating: Output of control value continuous / switching For switching control value: Control type Two-step control / PWM control Only for two-step control: Hysteresis 0.3 K / 0.5 K / 0.7 K / 1.0 K / 1.5 K / 2 K Reduction of hysteresis inactive 0.2 K/min 0.029 K/min Cyclic time for automatic inactive sending every 20 min every 30 min every 60 min Only for PWM control: Control parameter by installation type more detailed Only if by installation type is selected: Type of heating Warm water heating (1.5 K/100 min) Electrical heating (1.5 K/50 min) Floor heating (4 K/200 min) Only if more detailed is selected: Proportional range 1 K / 1.5 K / / 10 K Readjust time in min. 0 min / 10 min / / 100 min / 120 min / / 240 min Cyclic time of the switching 3 min / 5 min / 10 min / 15 min / control value 20 min / 30 min PWM cycle is 0% up to an 0 % / 5 % / 10 % / / 30 % output value PWM cycle is 100% down to 70 % / / 90 % / 95 % / 100 % an output value For continous control value: Control parameter by installation type more detailed Only if by installation type is selected: Type of heating Warm water heating (1.5 K/100 min) Electrical heating (1.5 K/50 min) Floor heating (4 K/200 min) Only if more detailed is selected: Proportional range 1 K / 1.5 K / / 10 K Readjust time in min. 0 min / 10 min / / 100 min / 120 min / / 240 min Minimum control value 0 % / 5 % / 10 % / / 30 % Maximum control value 70 % / / 90 % / 95 % / 100 % Cyclic time for automatic sending inactive of control output every 20 min every 30 min every 60 min Additional heating: Difference between basic heating 1 K / 2 K / 3 K and additional heating Hysteresis (one-sided) 0.15 K / / 1.0 K Cyclic time for automatic sending no cyclical sending / every 3 min / of control value / every 15 min / / every 60 min Type of control value semi-continuous (1 byte: 0% or 100%) switching (1 bit) March 2003 2-11
Parameters The default setting for the values is printed in bold type. Cooling: Output of control value continuous / switching For switching control value: Control type Two-step control / PWM control Only for two-step control: Hysteresis 0.3 K / 0.5 K / 0.7 K / 1.0 K / 1.5 K / 2 K Reduction of hysteresis inactive 0.2 K/min 0.029 K/min Cyclic time for automatic inactive sending every 20 min every 30 min every 60 min Only for PWM control: Control parameter by installation type more detailed Only if by installation type is selected: Type of cooling Cooling ceiling (5 K/240 min) SplitUnit / convector fan (4 K/90 min) Only if more detailed is selected: Proportional range 1 K / / 4 K / / 10 K Readjust time in min. 0 min / 10 min / / 90 min / 120 min / / 240 min Cyclic time of the switching 3 min / 5 min / 10 min / 15 min / control value 20 min / 30 min PWM cycle is 0% up to an 0 % / 5 % / 10 % / / 30 % output value PWM cycle is 100% down to 70 % / / 90 % / 95 % / 100 % an output value For continuous control value: Control parameter by installation type more detailed Only if by installation type is selected: Type of cooling Cooling ceiling (5 K/240 min) SplitUnit / convector fan (4 K/90 min) Only if more detailed is selected: Proportional range 1 K / / 4 K / / 10 K Readjust time in min. 0 min / 10 min / / 90 min / 120 min / / 240 min Minimum control value 0 % / 5 % / 10 % / / 30 % Maximum control value 70 % / / 90 % / 95 % / 100 % Cyclic time for automatic sending inactive of control output every 20 min every 30 min every 60 min 2-12 March 2003
Parameters The default setting for the values is printed in bold type. Manual setpoint selection: Range for manual setpoint selection disabled +/ 1 K +/ 3 K +/ 5 K Only for manual selection: Maximum increase of setpoint 0 K / 1 K / 2 K / 3 K / 4 K / 5 K for heating Maximum reduction of setpoint 0 K / 1 K / 2 K / 3 K / 4 K / 5 K for cooling Exp.: Range for setpoint selection: +/ 5K Max. increase in heating: 3 K Setting range for heating 5K to +3K Max. reduction in cooling: 1 K Setting range for cooling 1K to +5K Behaviour on receipt of a manual setpoint selection unchanged base setpoint reset manual setpoint selection March 2003 2-13