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Theben KNX Series Handbook

Theben KNX Series Handbook

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KNX Handbook
Room temperature regulator
RAMSES 718 P / RAMSES 718 S
7189210 - RAMSES 718 P
7189200 - RAMSES 718 S
2017-11-21

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Summary of Contents for Theben KNX Series

  • Page 1 KNX Handbook Room temperature regulator RAMSES 718 P / RAMSES 718 S 7189210 - RAMSES 718 P 7189200 - RAMSES 718 S 2017-11-21...

  • Page 2: Table Of Contents

    Contents Function description Operation Technical data The application programmes RAMSES 718 P/S Selection in the product database Overview of communication objects Description of communication objects Parameter pages overview General parameters Room temperature controller RTC functional block External inputs I1-I4 functional block Typical applications Location school: Heating with presence detector and frost protection via window contact.

  • Page 3: Function Description

    Function description 1 Function description • Individual room thermostat • For controlling heating actuators or motorised actuators • Can be used as a continuous or two point control (can also be combined). • Constant PI control that can be configured for 2-stage heating (basic and additional stage, e.g.

  • Page 4: Operation

    Operation 2 Operation RAMSES 718 S has the following control or display elements: • A rotary knob for the base set point of the room temperature controller or for set point offset • Three buttons for selecting operating type. • Press button longer on comfort button to set the presence object.

  • Page 5: Technical Data

    Technical data 3 Technical data Operating voltage KNX Bus voltage, I ≤12 mA Type of connection Bus connection: KNX bus terminal Installation type Wall-mounted Visualization LEDs Interface extension max. 30 m Ambient temperature +5 °C … +40 °C Measurement area temperature -5 °C …...

  • Page 6: The Application Programmes Ramses 718 P/S

    The application programmes RAMSES 718 P/S 4 The application programmes RAMSES 718 P/S 4.1 Selection in the product database Manufacturer Theben AG Product family Heating, ventilation, air conditioning Product type Continuous and 2 point controller Programme names RAMSES 718 P...

  • Page 7: Overview Of Communication Objects

    The application programmes RAMSES 718 P/S 4.2 Overview of communication objects 4.2.1 General Object name Function Length R W C T DPT Temperature value Send 2 bytes C T 9,001 Reduced 1 bit - W C - 1,001 Device LEDs Brightness 1 byte - W C - 5,001...
  • Page 8 The application programmes RAMSES 718 P/S 4.2.2 Room temperature controller (RTC) Object name Function Length R W C T DPT Defining the set Base set point 2 bytes - W C - 9,001 temperature Base set point at rotary control Send 2 bytes C T 9,001...
  • Page 9 The application programmes RAMSES 718 P/S Object name Function Length R W C T DPT 26 Actual value failure Send 1 bit C T 1,001 27 Outdoor temperature Receive 2 bytes - W C - 9,001 28 Dew point alarm Receive 1 bit - W C - 1,005...
  • Page 10 The application programmes RAMSES 718 P/S 4.2.3 External inputs I1-I4: Switch function Object name Function Length R W C T DPT Switching 1 bit - W C T 1,001 Priority 2 bit C T 2,001 Send percentage 1 byte C T 5,001 value 30 Channel I1.1 Send value...
  • Page 11 The application programmes RAMSES 718 P/S Object name Function Length R W C T DPT 2 byte 9.x 2 bytes C T 9.xxx 4 byte 14.x 4 bytes C T 14.xxx Block = 1 1 bit - W C - 1,001 39 Channel I2 Block = 0 1 bit...
  • Page 12 The application programmes RAMSES 718 P/S Object name Function Length R W C T DPT Send percentage 1 byte C T 5,001 value Send value 1 byte C T 5,010 2 byte 9.x 2 bytes C T 9.xxx 4 byte 14.x 4 bytes C T 14.xxx Block = 1...
  • Page 13 The application programmes RAMSES 718 P/S 4.2.4 External inputs I1-I4: Button function Object name Function Length R W C T DPT Switching 1 bit - W C T 1,001 Priority 2 bit C T 2,001 Send percentage 1 byte C T 5,001 value 30 Channel I1.1 Send value...
  • Page 14 The application programmes RAMSES 718 P/S Object name Function Length R W C T DPT 2 byte 9.x 2 bytes C T 9.xxx 4 byte 14.x 4 bytes C T 14.xxx Block = 1 1 bit - W C - 1,001 39 Channel I2 Block = 0 1 bit...
  • Page 15 The application programmes RAMSES 718 P/S Object name Function Length R W C T DPT Send percentage 1 byte C T 5,001 value Send value 1 byte C T 5,010 2 byte 9.x 2 bytes C T 9.xxx 4 byte 14.x 4 bytes C T 14.xxx Block = 1...
  • Page 16 The application programmes RAMSES 718 P/S 4.2.5 External inputs I1-I4: Dimming function Object name Function Length R W C T DPT 30 Channel I1 Switching 1 bit C T 1,001 31 Channel I1 Brighter/darker 4 bit C T 3,007 Switching 1 bit - W C T 1,001 Priority...
  • Page 17 The application programmes RAMSES 718 P/S Object name Function Length R W C T DPT Send percentage 1 byte C T 5,001 value Send value 1 byte C T 5,010 2 byte 9.x 2 bytes C T 9.xxx 4 byte 14.x 4 bytes C T 14.xxx Block = 1...
  • Page 18 The application programmes RAMSES 718 P/S 4.2.6 External inputs I1-I4: Blinds function Object name Function Length R W C T DPT 30 Channel I1 Step/stop 1 bit C T 1,010 UP/DOWN 1 bit - W C T 1,008 31 Channel I1 1 bit C T 1,008 DOWN...
  • Page 19 The application programmes RAMSES 718 P/S Object name Function Length R W C T DPT 4 byte 14.x 4 bytes C T 14.xxx 43 Channel I3.2 Slat % 1 byte C T 5,001 Block = 1 1 bit - W C - 1,001 44 Channel I3 Block = 0 1 bit...

  • Page 20: Description Of Communication Objects

    The application programmes RAMSES 718 P/S 4.3 Description of communication objects 4.3.1 General objects Object 1: Temperature value Sends the room temperature in °C, measured with the temperature sensor inside the device. Object 2: Device LEDs The brightness of the device LEDs can be changed via bus, if desired. (See General parameter page).
  • Page 21 The application programmes RAMSES 718 P/S 4.3.2 Objects for the room temperature controller (RTC) Object 10: Base set point RAMSES 718 P: The function of the object is determined using the parameter function of the rotary control. Parameter: Rotary Object function control function Base set point Sends the base set point set at the rotary control.
  • Page 22 The application programmes RAMSES 718 P/S RAMSES 718 S: Receive manual set point offset. The object receives a temperature difference. The desired room temperature (current set point) can be adjusted against the base set point by this difference. This applies in comfort mode (heating): Actual set point = base set point + manual set point offset.
  • Page 23 The application programmes RAMSES 718 P/S Object 13: Operating mode preset or night <-> standby The function of the object is defined by the parameter Objects for determining the operating mode. Objects for determining the operating Object function mode new: operating mode, presence, window Here, it is a 1 byte object.
  • Page 24 The application programmes RAMSES 718 P/S Object 15: Window status, or frost/heat protection The function of the object is defined by the parameter Objects for determining the operating mode. Objects for determining the operating Object function mode new: operating mode, presence, window Window setting: status The status of a window contact can be received via...
  • Page 25 The application programmes RAMSES 718 P/S Object 19: Additional heating stage actuating value or PWM additional heating stage Sends the actuating value for the additional heating stage depending on the configuration, as 1 bit PWM, or 1 byte percentage telegram. This object is only available if the additional stage is used.
  • Page 26 The application programmes RAMSES 718 P/S Object 25: External actual value Only available if external actual value has been selected as a source. Receives the room temperature from another measurement point via the bus. This object can be activated on the actual value parameter page. Object 26: Send actual value failure Only available if the actual value monitoring is activated (Monitor actual value = yes).
  • Page 27 The application programmes RAMSES 718 P/S 4.3.3 Objects for the external inputs: Switch function Object 30: channel l1.1 First initial object of the channel (First telegram). 6 telegram formats can be set: Switching ON/OFF, priority, send percentage value, send value, 2 byte DPT 9.x, 4 byte DPT 14.x. Object 31: channel I1.2 Second initial object of the channel (Second telegram).
  • Page 28 The application programmes RAMSES 718 P/S 4.3.4 Objects for the external inputs: Button function Object 30: channel I1.1 First initial object of the channel (First telegram). 6 telegram formats can be set: Switching ON/OFF, priority, send percentage value, send value, 2 byte DPT 9.x, 4 byte DPT 14.x. Object 31: channel I1.2 Second initial object of the channel (Second telegram).
  • Page 29 The application programmes RAMSES 718 P/S 4.3.5 Objects for the external inputs: Dimming function Object 30: channel I1.1 switching Switches the dimmer on and off. Object 31: channel I1.1 lighter/darker, lighter / darker 4-bit dimming commands. Object 32: channel I1.1 – switching, priority, percentage.. Initial object for the additional function with double-click.
  • Page 30 The application programmes RAMSES 718 P/S 4.3.6 Objects for the external inputs: Blinds function Object 30: Channel I1 UP/DOWN, UP, DOWN Sends operating command to the blind actuator. Object 31: Channel I1 Step/Stop Sends Step/Stop commands to the blind actuator. Object 32: channel I1.1 –...
  • Page 31 The application programmes RAMSES 718 P/S 4.3.7 Objects for the external inputs I3 and I4: Temperature sensor function  The external inputs I3 and I4 can be used as analogue inputs for temperature measurement via remote sensor. This function is activated on the General parameter page with the parameter function of the external inputs I3 + I4.
  • Page 32 The application programmes RAMSES 718 P/S 4.3.8 Diagnosis and alarm objects Object 50: Firmware version Sends firmware version information as DPT_Version (DPT217.001). Format, 2 byte: Magic number Version number Revision number Object 51: Alarm info Reports error or alarm as DPT_AlarmInfo (DPT219.001). Object 52: Alarm error code Sends an error code as DPT_Value_4_Ucount (DPT12.001).

  • Page 33: Parameter Pages Overview

    The application programmes RAMSES 718 P/S Parameter pages overview The device consists of one general block and 4 main functional blocks. Parameter page Description General functional block General LED settings, activation of the temperature sensor inputs. Measurement values Setting for temperature measurement (internal sensor) RTC functional block Setting General settings to operate...

  • Page 34: General Parameters

    The application programmes RAMSES 718 P/S 4.5 General parameters 4.5.1 General Designation Values Description Reduce brightness The LEDS should: of the LEDs never Shine every time at maximum brightness. always Always shine at the specified brightness only in night mode Shine at the specified brightness if the RTC is set to night mode.
  • Page 35 The application programmes RAMSES 718 P/S 4.5.2 Measurement values Designation Values Description TEMPERATURE Transmit temperature on change of (internal sensor)  Only valid for temperature measurement at the internal sensor. not due to a Only send cyclically change (if enabled) 0.2 K Send if the value has changed 0.3 K...

  • Page 36: Room Temperature Controller Rtc Functional Block

    The application programmes RAMSES 718 P/S 4.6 Room temperature controller RTC functional block 4.6.1 Setting Designation Values Description Control Heating control only Heating mode only Heating and cooling Additionally, a cooling system is to be controlled. Base set point Rotary control function The base set point is exclusively set at the rotary control.
  • Page 37 The application programmes RAMSES 718 P/S Designation Values Description The floor temperature is measured by a sensor at external input I4. On the Heating set points parameter page the Maximum floor temperature parameter is shown. Functionality: If the Maximum floor temperature is reached, the heating actuating value is reduced to 0%.
  • Page 38 The application programmes RAMSES 718 P/S 4.6.2 Actual value On this parameter page the source is selected which is used as the actual value for control. This can be the temperature sensor integrated in the device, an external sensor, or a combination of up to 3 sensors.
  • Page 39 The application programmes RAMSES 718 P/S Designation Values Description Monitor actual value No monitoring. All selected actual value sources are monitored. In case of an error, the object sends actual value failure error telegrams.  As long as at least one valid actual value remains available, this will be continued to be used for...
  • Page 40 The application programmes RAMSES 718 P/S Designation Values Description Emergency program in case of with PI controller: 0%, The emergency program will only actual value failure with 2-point controller: be executed if the selected Source for actual value provides with PI controller: 10%, no valid value anymore.
  • Page 41 The application programmes RAMSES 718 P/S 4.6.3 Operating Mode Designation Values Description Operating mode after reset Frost protection Operating mode after start-up or Temperature reduction reprogramming at night Standby Comfort New: Operating mode, Objects for determining the The operating mode is changed operating mode presence, window depending on the window and...
  • Page 42 The application programmes RAMSES 718 P/S Designation Values Description Presence button If a new operating mode is received on the operating mode preset object with the presence object set, it will be accepted and the presence object will be reset. Reception of the same operating mode prior to the presence status (e.g.
  • Page 43 The application programmes RAMSES 718 P/S 4.6.4 Heating control Designation Values Description Continuous Type of control Infinite control (0.. 100%). 2-point Switching control (On/Off). See in the Appendix: Continuous and switching control. Only one heating stage Number of heating stages Choice of 1- or 2-stage heating Main stage and additional stage...
  • Page 44 The application programmes RAMSES 718 P/S Designation Values Description Integrated time of heating pure P controller Professional setting: controller 30 min, 60 min See in the Appendix: Response of 90 min, 120 min the PI controller 150 min, 180 min This time can be adapted to suit 210 min particular circumstances.
  • Page 45 The application programmes RAMSES 718 P/S 4.6.5 Heating set points Designation Values Description Base set point after loading the 18 °C, 19 °C, 20 °C Output set point for temperature 21 °C, 22 °C, 23 °C application control. 24 °C, 25 °C Minimum valid base set point 5-20°C in 1 degree If the object receives a base set...
  • Page 46 The application programmes RAMSES 718 P/S Designation Values Description Average value betw. Same value in comfort mode heating and cooling during both heating and cooling mode, i.e.: base set point + half dead zone will be sent, so users of the room will not be irritated.
  • Page 47 The application programmes RAMSES 718 P/S 4.6.6 Additional stage heating Temperature control is done via a proportional controller. Designation Values Description Output of the actuating value Control is done via a proportional controller. Percent Continuous actuating value 0- 100 % Pulse-width modulated switching actuating value.
  • Page 48 The application programmes RAMSES 718 P/S Designation Values Description do not send cyclically Send cyclically How often should it be resent? every 2 min. every 3 min. … every 45 min. every 60 min. RAMSES 718 P / RAMSES 718 S...
  • Page 49 The application programmes RAMSES 718 P/S 4.6.7 Cooling control Designation Values Description Continuous Type of control Infinite control (0.. 100%). 2-point Switching control (On/Off). See in the Appendix: Continuous and switching control. Only one cooling stage Number of cooling stages Choice of 1- or 2-stage cooling Main stage and additional stage...
  • Page 50 The application programmes RAMSES 718 P/S Designation Values Description Integrated time of the cooling 30 min, 60 min, Professional setting: control 90 min, 120 min See in the Appendix: Response of 150 min, 180 min the PI controller 210 min This time can be adapted to suit 4 h, 5 h, 10 h particular circumstances.
  • Page 51 The application programmes RAMSES 718 P/S 4.6.8 Cooling set points Designation Values Description Dead zone between heating and , 0.5 K , 1 K, 1.5 K, Specifies the buffer zone 2 K, 2.5 K, 3 K, 3.5 K cooling between set points for heating 4 K, 4.5 K, 5 K, 5.5 K, 6 K and cooling mode.
  • Page 52 The application programmes RAMSES 718 P/S 4.6.9 set point adjustment Designation Values Description 25 °C, 26 °C, 27 °C, 28 °C set point correction from Activation threshold for set point 29 °C, 30 °C, 31 °C, 32 °C correction. 33 °C, 34 °C, 35 °C, 36 °C 37 °C, 38 °C , 39 °C, 40 °C Adjustment 1 K per 1 K outdoor...
  • Page 53 The application programmes RAMSES 718 P/S Designation Values Description Until heat protection temp. The set point is only increased up reached to the configured heat protection temperature. +3 K The set point increase ends as +5 K soon as the adjustment has +7 K achieved the set value.
  • Page 54 The application programmes RAMSES 718 P/S 4.6.10 Additional stage cooling Control is done via a proportional controller. Designation Values Description Type of actuating value Control is done via a proportional controller. Percent Continuous actuating value 0- 100 % Pulse-width modulated switching actuating value.

  • Page 55: External Inputs I1-I4 Functional Block

    The application programmes RAMSES 718 P/S 4.7 External inputs I1-I4 functional block 4.7.1 Switch function Designation Values Description Activate channel Use input? Switch.. Channel function Sends, depending on whether Push button.. the input is 0 or 1. Dimming.. Blinds.. Debounce time 30 ms, 50 ms, 80 ms In order to avoid a disruptive 100 ms, 200 ms,...
  • Page 56 The application programmes RAMSES 718 P/S 4.7.1.1 Switch object parameter pages 1, 2, 3 Each of the 3 objects can be configured individually on its own parameter page. Designation Values Description Switching (1 bit) Object type Telegram type for this object. Priority (2 bit) Value 0-255 Percentage value (1 byte)
  • Page 57 The application programmes RAMSES 718 P/S Designation Values Description Send cyclically When should be sent cyclically? yes, always The cycle time is set on the main only if input = 1 parameter page of the channel. only if input = 0 Response after none Do not send.
  • Page 58 The application programmes RAMSES 718 P/S 4.7.2 Switch function I1, I2, I3, I4 Designation Values Description Activate channel Use input? Channel function Switch.. A push button is connected to Push button.. the input. Dimming.. Blinds.. 30 ms, 50 ms, 80 ms Debounce time In order to avoid a disruptive 100 ms, 200 ms,...
  • Page 59 The application programmes RAMSES 718 P/S 4.7.2.1 Parameter pages button object 1, 2, 3 Each of the 3 objects can be configured individually on its own parameter page. Designation Values Description Switching (1 bit) Object type Telegram type for this object. Priority (2 bit) Value 0-255 Percentage value (1 byte)
  • Page 60 The application programmes RAMSES 718 P/S Designation Values Description Telegram See above: Same object type as with short operation. Send cyclically The cycle time is set on the main parameter page of the channel. Response after none Do not send. restoration of the bus supply As with short (immediately)
  • Page 61 The application programmes RAMSES 718 P/S 4.7.3 Dimming function I1, I2, I3, I4 Designation Values Description Activate channel Use input? Channel function Switch.. The input controls a dimming Push button.. actuator, Dimming.. Blinds.. 30 ms, 50 ms, 80 ms Debounce time In order to avoid a disruptive 100 ms, 200 ms, switching due to debouncing of...
  • Page 62 The application programmes RAMSES 718 P/S 4.7.3.1 Dimming parameter page Designation Values Description Response to The input distinguishes between "long" / "short" a long and a short button push, and can thus carry out 2 functions. One button operation The dimmer is operated with a single push button.
  • Page 63 The application programmes RAMSES 718 P/S Designation Values Description after 5 s ON Switch on dimmer with delay after 10 s ON after 15 s ON after 5 s OFF Switch off dimmer with delay after 10 s OFF after 15 s OFF Response when setting the block Ignore block The block function is ineffective...
  • Page 64 The application programmes RAMSES 718 P/S 4.7.3.2 Double-click parameter page Designation Values Description Switching (1 bit) Object type Telegram type for this object. Priority (2 bit) Value 0-255 Percentage value (1 byte) 2 byte floating-point number DPT 9.x 4 byte floating-point number DPT 14.x Telegram With object type = switching 1...
  • Page 65 The application programmes RAMSES 718 P/S Designation Values Description supply As with double-click Send update telegram (immediately) immediately or with delay. As with double-click (after 5 s) The value to be sent depends on As with double-click (after 10 s) the value configured for double- As with double-click (after 15 s) click.
  • Page 66 The application programmes RAMSES 718 P/S 4.7.4 Blinds function I1, I2, I3, I4 Designation Values Description Activate channel Use input? Channel function Switch.. The input controls a blinds Push button.. actuator. Dimming.. Blinds.. 30 ms, 50 ms, 80 ms Debounce time In order to avoid a disruptive 100 ms, 200 ms, switching due to debouncing of...
  • Page 67 The application programmes RAMSES 718 P/S 4.7.4.1 Blinds parameter page Designation Values Description Operation The input distinguishes between a long and a short button push, and can thus carry out 2 functions. One button operation The blinds are operated with a single push button.
  • Page 68 The application programmes RAMSES 718 P/S 4.7.4.2 Double-click parameter page Designation Values Description Switching (1 bit) Object type Telegram type for this object. Priority (2 bit) Value 0-255 Percentage value (1 byte) 2 byte floating-point number DPT 9.x 4 byte floating-point number DPT 14.x Telegram With object type = switching 1...
  • Page 69 The application programmes RAMSES 718 P/S Designation Values Description supply As with double-click Send update telegram (immediately) immediately or with delay. As with double-click (after 5 s) The value to be sent depends on As with double-click (after 10 s) the value configured for double- As with double-click (after 15 s) click.
  • Page 70 The application programmes RAMSES 718 P/S 4.7.5 Temperature sensor function (only I3 and I4)  The external inputs I3 and I4 can be used as analogue inputs for temperature measurement via remote sensor. This function is activated on the General parameter page with the parameter function of the external inputs I3 + I4.
  • Page 71 The application programmes RAMSES 718 P/S Designation Values Description do not send cyclically Send temperature cyclically How often should the current every min, measured value be resent? every 2 min. every 3 min. … every 45 min. every 60 min. RAMSES 718 P / RAMSES 718 S...
  • Page 72 Remote sensor IP 65 (9070459) Green Floor sensor (9070321)  Contact voltage: 5V SELV Contact current: 0.5 mA (mean value), 5 mA (peak value) Only connect floating contacts or Theben temperature sensors. CAUTION! Observe extra-low voltage/distances! RAMSES 718 P / RAMSES 718 S...

  • Page 73: Typical Applications

    Typical applications 5 Typical applications These typical applications are designed to aid planning and are not to be considered an exhaustive list. It can be extended and updated as required. 5.1 Location school: Heating with presence detector and frost protection via window contact. The room temperature controller (RTC) controls one or more actuators.
  • Page 74 Typical applications 5.1.2 Overview 5.1.3 Objects and links PlanoSpot 360 KNX RAMSES 718 P/S Comment Object name Object name Presence telegram. Presence channel C4.1 Presence Triggers comfort mode. RAMSES 718 TR 648 top2 Comment Object name Object name C1.1 switching channel – Operating mode Switches the controller between HVAC operating mode...
  • Page 75 Typical applications RAMSES RAMSES 718 P/S 718 P/S Comment Object Object name name The windows status is detected at input E1 (window Channel I1.1 Window contact) and sent to the controller (window status) via switching status a group address. When opening the window, the controller changes into frost protection mode.
  • Page 76 Typical applications TR 648 top2 RC: Parameter page Parameter Setting General Activate time switch channel C1 Switching channel C1 Telegram type C1.1 HVAC operating mode As with clock -> ON send following telegram once Telegram Standby With clock -> OFF send following telegram once Telegram Temperature reduction at night...

  • Page 77: Location Single-Family House

    Typical applications 5.2 Location single-family house: 5.2.1 Heating with presence detector and frost protection via window contact. The room temperature controller (RTC) controls one or more actuators. The comfort mode is cancelled on the device using button , otherwise the controller is in standby all day and in night mode all night.
  • Page 78 Typical applications 5.2.4 Objects and links TR 648 top2 RAMSES 718 P Comment Object name Object name C1.1 switching channel – Operating mode Switches the controller between HVAC operating mode preset standby and night. RAMSES 718 P HM 6 T Comment Object name Object name...
  • Page 79 Typical applications 5.2.5 Important parameter settings Standard or customer-defined parameter settings apply to unlisted parameters. RAMSES 718 P: Parameter page Parameter Setting RTC setting Control Heating control only Rotary control function Manual offset Button function Presence button Operating Mode Objects for determining the operating New: Operating mode, presence, mode window status...

  • Page 80: Switching, Dimming Light And Controlling Blinds

    Typical applications 5.3 Switching, dimming light and controlling blinds Via the external inputs, it is possible to simply control various actuators, such as switching, blinds, and dimming actuators, with conventional buttons. 5.3.1 Devices • RAMSES 718 P/S (Order no.7189210/7189200) • RM 4 U (Order No.
  • Page 81 Typical applications 5.3.3 Objects and links RAMSES 718 P/S RM 4 U Comment Object name Object name Channel I1.1 – Channel C1 – switch Switch command for the switching object light. RAMSES 718 P/S DM 2 T Comment Object name Object name Channel I2 –...
  • Page 82 Typical applications RM 4 U: Parameter page Parameter Setting Channel C1: Configuration options Channel function switch On/Off DM 2 T: Parameter page Parameter Setting Dimming response Load selection To be set system-specific. JM 4 T Parameter page Parameter Setting Channel C1: Configuration options Type of motor To be set system-specific.

  • Page 83: Two-Stage Heating For Floor And Radiators

    Typical applications 5.4 Two-stage heating for floor and radiators A room is heated via the floor and additionally via radiators. Both heating sources have very different requirements and are therefore controlled via 2 separate heating stages. The first heating stage controls and limits the floor temperature (slow, inert heating). The second heating stage controls one or several radiators (fast heating).
  • Page 84 Typical applications 5.4.4 Important parameter settings Standard or customer-defined parameter settings apply to unlisted parameters. RAMSES 718 P/S: Parameter page Parameter Setting General Function of the external inputs I3 + I4 Temperature sensor input.. Setting Control Heating control only Use floor temperature limitation (sensor at I4) Heating control Type of control...

  • Page 85: Appendix

    Appendix 6 Appendix 6.1 LED colors for temperature control Heating Status RTC Cooling Comfort Comfort extension Operating Mode Standby Frost RAMSES 718 P / RAMSES 718 S...

  • Page 86: Pwm Cycle

    Appendix 6.2 PWM cycle 6.2.1 Basic principle The 50% control variable is converted into switch-on/switch-off cycles in order to achieve a heating output of 50%. The actuator is switched on for 50% of the time and switched off for 50% of the time over a fixed period (10 minutes in our example).
  • Page 87 Appendix  If the rated switch-on time for the current cycle has already exceeded while receiving the new actuating value, the output is immediately switched off and the new actuating value is executed during the next cycle. Example 2: The last control variable was 50% (A) A new actuating value of 30% is received during the cycle (B).

  • Page 88: Operating Mode As Scene (Rtc)

    Appendix 6.3 Operating mode as scene (RTC) 6.3.1 Principle The current operating mode can be saved via an object with the scene functions and restored later at any time. The current operating mode is allocated to the appropriate scene number when a scene is saved.

  • Page 89: Set Point Correction

    Appendix 6.4 set point correction  dynamic adjustment The set point correction enables a of the set point to the outdoor temperature when cooling. This function prevents too great a temperature deviation between the outside area and the cooled interior with high outside temperatures. If the outdoor temperature exceeds a set threshold, adjustment is activated and a corresponding increase of the set point is calculated.
  • Page 90 Appendix 6.4.1 Format of set point correction: Relative set point correction is sent as a temperature difference. Below the set point correction threshold (set point correction from) the value 0 is sent. If the set point correction threshold (set point correction from) is exceeded, the set point will be increased linearly depending on the change of the outside temperature.
  • Page 91 Appendix 6.4.2 Format of set point correction: Absolute Sends the corrected set point to the bus for additional room thermostats. This set point is calculated from: Base set point without correction + dead zone + adjustment. Example: set point correction from: 25 °C, start set point: 20 °C, dead zone = 2 K Adjustment Outdoor temp.

  • Page 92: Temperature Control

    Appendix 6.5 Temperature control 6.5.1 Introduction If the device is not configured as a switching controller, it can alternatively be configured as a P or as a PI controller, whereby PI control is preferable. With the proportional controller (P controller), the actuating value is statically adjusted to the control deviation.
  • Page 93 Appendix 6.5.2 Response of the P controller Max. 4l/Min. Set point value Bandwidth Actual value Losses 1l/Min If the filling quantity is 15 l, there is a control deviation of 21 l – 15 l = 6 l As our actual value lies outside the bandwidth, the control will operate the feed at 100%, i.e.
  • Page 94 Appendix P controller as temperature controller Just as in the previous example, the P controller behaves in a heating control. The set temperature (21 °C) can never be completely reached. The permanent control deviation is increased the higher the heat losses, i.e. the colder the outdoor temperatures.

  • Page 95: Continuous And Switching Control

    Appendix 6.5.3 Response of the PI controller In contrast to the pure P controller, the PI controller functions dynamically. With this type of controller, the actuating value remains unchanged, even at a constant deviation. At the first moment, the PI controller sends the same actuating value as the P controller. However, this will be increased further the longer the set point will not be reached.

  • Page 96: Hysteresis

    Appendix 6.7 Hysteresis  Hysteresis determines the difference between a controller’s switching on and off temperature. It can be both positive and negative. With a combination of heating and cooling control, it influences the amount of the dead zone. Without hysteresis, the controller would activate and deactivate continuously, as long as the temperature lies within the range of the set point.

  • Page 97: Dead Zone

    Appendix 6.8 Dead zone  The dead zone is a buffer area between heating and cooling mode. Within this dead zone, neither heating nor cooling occurs. Without this buffer area, the system would permanently switch between heating and cooling. As soon as the set point was fallen below, the heating would be activated.
  • Page 98 Appendix Case 4: Heating and cooling with 2-point control Cooling set point 26ºC Cooling hysteresis 1 K DEAD ZONE 4 K Heating hysteresis 1 K Heating set point 20 °C The dead zone (4 K) is increased by the value of both hysteresis (2K) and offsets the cooling set point to 26 °C.

  • Page 99: Operating Mode Selection

    Appendix 6.9 Operating mode selection 6.9.1 Priorities for operating mode selection The operation mode selection between comfort, standby, night operation and frost protection happen in 3 different ways: • Via the object Operating mode preset • Manually at the device •...
  • Page 100 Appendix 6.9.2 Determining the current operation mode The current set point can be adjusted to the relevant requirements via the choice of operating mode. The operating mode can be specified via the objects operating mode preset, presence, and window setting. For this, there are two methods: 6.9.2.1 New operating modes If objects for determining the operating mode"...
  • Page 101 Appendix Determining the operating mode when using a presence detector Operating mode guideline via.. Button Object Operating Last mode preset command applies Scene Operating mode after download Results in.. Frost protection Night Presenc Standby Window Comfort Current Operating Mode Frost protection Only RAMSES 718 P RAMSES 718 P / RAMSES 718 S...
  • Page 102 Appendix 6.9.2.2 Old operating modes If on the Settings parameter page objects for determining the operating mode = Old:... was selected, then the current operating mode can be defined as follows: Obj. Night/standby Obj. Comfort Obj. Frost/heat protection Obj. Current operating mode Frost/heat protection Comfort Standby...

  • Page 103: Determination Of The Set Point

    Appendix 6.10 Determination of the set point 6.10.1 set point calculation in heating mode See also: Base set point and current set point Current set point during heating: Operating Mode Current set point Comfort Base set point +/- set point offset Standby Base set point +/- set point offset –...
  • Page 104 Appendix 6.10.2 set point calculation in cooling mode Current set point during cooling: Operating Current set point Mode Comfort Base set point + set point offset + dead zone Standby Base set point + set point offset + dead zone + increase in standby mode Night Base set point + set point offset + dead zone + increase in night mode Frost/heat...

  • Page 105: Set Point Offset

    Appendix 6.11 set point offset With this function, the user can increase or reduce the room temperature individually, as desired. The current set point can either be offset via the object manual set point offset, or via the rotary control. See parameter function of the rotary control The offset limits are defined on the set points parameter page via the Maximum valid set point offset parameter.

  • Page 106: Base Set Point And Current Set Point

    Appendix 6.12 Base set point and current set point base set point is the standard temperature for the comfort mode and the reference temperature for reduction in standby and night modes. The base set point can be defined directly at the rotary control, or via the object base set point (see parameter function of the rotary control).
  • Page 107 Appendix 6.12.1 set point calculation Operating mode/scene Heating/cooling Comfort - Standby Manual set Heating mode - Night Base set point Safety point offset limits limits Frost protection Current Base set point + / - set point Comfort + Standby Cooling mode + Dead zone + Night Heat protection...

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