RDG200KN&RDG260KN Room thermostats with KNX communications Basic Documentation A6V11545892_en--_b 2021-04-21 Smart Infrastructure
Table of Contents 1 About this document ....................................................................... 5 1.1 1.2 1.3 Revision history ...........................................................................................5 Reference documents..................................................................................5 Before you start ...........................................................................................6 1.3.1 Trademarks ...........................................
4.6.7 4.7 4.8 Scheduler .................................................................................. 60 4.6.8 Master/slave .............................................................................. 62 4.6.9 Preventive operation .................................................................. 66 4.6.10 NFC communication................................................................... 66 Control sequences ....................................................................................
5.1.1 Setting parameters in ETS ........................................................ 137 5.2 ACS tool .................................................................................................. 139 5.2.1 Setting parameters in ACS ........................................................ 140 5.2.2 Operation and monitoring with ACS........................................... 142 5.2.3 Operation and monitoring with OZW772 .................................... 146 6 6.1 6.2 6.3 Connection .........
About this document 1 Revision history 1 About this document 1.1 Revision history Edition Date Changes Section 1 September 2020 First version. All 2 November 2020 ● ● ● Update NFC communication info Update changeover picture Update the picture of DC 0…10 V fan in "Fan control with modulating heating/cooling control" Update info about geographical zones P901 and P902 Update ACS version info ● ● ● ● ● 4.6.8 4.7.9.2 4.9 4.12.3 1.5, 5.
1 About this document Before you start Subject Ref. Document title Document number Synco and KNX (see www.siemens.
About this document Target audience, prerequisites 1 1.3.3 Quality assurance This document is prepared with great care. ● The contents of this document are checked at regular intervals. ● Any corrections necessary are included in subsequent versions. ● Documents are automatically amended as a consequence of modifications and corrections to the products described. Please make sure that you are aware of the latest document revision date.
1 About this document Glossary 1.5 Glossary The inputs, outputs and parameters of an application can be influenced in various ways. These are identified by the following symbols in this document: Parameters identified by this symbol are set using ETS. Parameters identified by this symbol are set using ACS. Note! Setting RDG2..KN KNX parameters is only supported by the following tool versions: ● ETS5 or higher versions ● ACS version 13.
Overview 2 Types 2 Overview 2.1 Types For fan coil units, universal applications and compressors in DX-type equipment applications Operating voltage Product no. Stock no.
2 Overview Functions General functions ● ● Heating and cooling, compressor in DX-type equipment Heating or cooling/2-stage, compressor in DX-type equipment ● ● ● Selectable weekly scheduler Master/slave function between thermostats Room temperature control via built-in temperature sensor or external room temperature/return air temperature sensor Room relative humidity control via built-in humidity sensor (humidity function can be disabled.) Min./max.
Overview Functions Special functions ● ● ● ● ● ● ● Inputs/outputs ● ● ● KNX communication features ● ● ● ● ● ● ● ● ● ● ● A6V11545892_en--_b 2 Swap function for 2-pipe and 2-stage application by switching the 1 st stage heating to 2nd stage cooling In 2-stage applications (2-/4-pipe), limit the number of heating or cooling sequence to one Control of 6-port ball valve for chilled and heated ceiling, DC 0…10 V, DC 2…10 V and inverted signals DC 10…0 V, DC 10…2 V (RDG260KN) Control of 6-port ball valv
2 Overview Accessories 2.3 Accessories Type Product/stock no. Datasheet KNX power supply 5WG1 125-1AB02 160 mA (Siemens BT LV) TPI_N125 KNX power supply 5WG1 125-1AB12 320 mA (Siemens BT LV) TPI_N125 KNX power supply 5WG1 125-1AB22 640 mA (Siemens BT LV) TPI_N125 Adapter plate for RDG2..KN 1) - ARG200: S55770-T438 1) ARG200 mounting plate used to wall-mount the RDG2..KN without conduit box. For dimensions, see Dimensions [➙ 166]. 2.
Overview 2 Equipment combinations On/Off actuators Type of unit Electromotive On/Off actuator On/Off and PWM actuators 1) 3-positon actuators AC 230 V A6V11545892_en--_b Product no. Datasheet *) SFA21.. SFA71.. 4863 Electromotive On/Off valve and actuator (only available in AP, UAE, SA and IN) MVI../MXI.. A6V11251892 Zone valve actuator (only available in AP, UAE, SA and IN) SUA 4832 Type of unit Product no. Thermal actuator (for radiator valves) AC 230 V, NO STA23..
2 Overview Equipment combinations 3-positon actuators AC 24 V DC 0…10 V actuators KNX actuators Type of unit Product no. Datasheet *) Electric actuator, 3-position (for radiator valves) AC 24 V SSA81.. 4893 Electric actuator, 3-position (for 2and 3-port valves/V..P45) AC 24 V SSC81 4895 Electric actuator, 3-position (for small valves 2.5 mm) AC 24 V SSP81.. 4864 Electric actuator, 3-position (for small valves 5.5 mm) AC 24 V SSB81..
Overview Integration via KNX bus 2 ● 10 SFA.., SUA.., MVI.., MXI.. On/Off actuators ● Parallel operation of SAS31 not available Max. number of actuators in parallel on RDG200KN (AC 24 V): ● 6 SS..81.. actuators (3-position) ● 4 ST..73.. if used with On/Off control signal ● 2 SFA71.. On/Off actuators ● Parallel operation of SAS81 not available Max. number of actuators in parallel on RDG260KN (AC 24 V): ● 10 SS..61.. actuators (DC) ● 10 ST..23/63/73.. actuators (DC or On/Off) ● 10 SFA.., SUA.., MVI.., MXI..
2 Overview Integration via KNX bus Synco topology Legend Desigo and third-party systems 16 | 170 Synco 700 Building automation and control system (BACS) Gateway Connection of meters via Modbus OZW Web server, connection of Synco, RDG/RDF & GAMMA RMB Central control, RDG/RDF integration RDG/RDF Thermostats for room climate control Gamma Instabus For lighting control and other room electrical applications The RDG2..
Notes 3 Mounting and installation 3 Notes 3.1 Mounting and installation Mounting ● ● ● ● ● ● ● ● Wiring ● The devices are suitable for wall mounting. Recommended height: 1.5 m above the floor. Do not mount the devices in recesses, shelves, behind curtains or doors, or above or near heat sources. Avoid direct solar radiation and drafts. Avoid unheated (uncooled) building area such as outside walls. Seal the conduit box or the installation tube if any, as air currents can affect sensor readings.
3 Notes Commissioning ● If a KNX bus power supply is connected to the line with communicating thermostats and Synco controller, the internal KNX power supply of the Synco controllers must be switched off. 3.2 Commissioning Applications and settings The room thermostats are delivered with a fixed set of applications and related parameters.
Notes 3 Commissioning ACS and ETS require an interface: ● KNX interface (e.g. Siemens N148…) ● OCI702 USB-KNX interface Control sequence Set the control sequence via parameter P001 depending on the application.
3 Notes Operation 3.3 Operation The room thermostat consists of two parts: ● Plastic housing with electronics, operating elements and room temperature sensor ● Mounting plate with the screw terminals The housing engages in the mounting plate and is secured with 2 screws.
Notes 3 Operation User action Effect, description Press left button (P002 = 3 and P009 = 1) Toggle between °C and °F (for details, see display in Temperature control [➙ 24]) Press left button while "Operating mode" via bus is Economy Activate "Extend Comfort mode" (for details, see Different ways to influence operating mode [➙ 30]).
Notes 3 # Remote operation Symbol Description # Symbol Description Operating mode 2 selection/Unit switching Scheduler 3 Fan speed selection 4 Escape 5 Delete schedule 6 Confirm parameters 7 Time bar for schedule 8 Number of schedules or slave alarms 9 Outside temperature 10 Additional user information, such as outside temperature, time of day from KNX bus, relative humidity 11 Morning: 12-hour format Afternoon: 12-hour format 12 Relative humidity 13 Degrees Celsius or Fahrenh
Notes Disposal 3 3.5 Disposal The device is considered an electronic device for disposal in accordance with the European Guidelines and may not be disposed of as domestic garbage. ● Dispose of the device through channels provided for this purpose. ● Comply with all local and currently applicable laws and regulations. 3.
4 Functions Temperature control 4 Functions 4.1 Temperature control General note: Parameters Setting control parameters (P001 etc. mentioned throughout the document), see Control parameters [➙ 126].
Functions 4 Operating modes 4.2 Operating modes Room operating mode: State The thermostat operating mode can be influenced in different ways (see Different ways to influence operating mode [➙ 26]). Specific heating and cooling setpoints are assigned to each operating mode. The thermostat sends the current room operating mode via bus. The following operating modes are available: Operating Icon Description mode Auto In Auto mode, the operating mode is commanded via bus or local schedule.
4 Functions Operating modes 4.2.1 Different ways to influence operating mode Source for change of operating mode ACS Different interventions can influence the operating mode. The source of the actual room operating mode state can be monitored using the "Cause" diagnostic data point in the ACS tool or web server OZW772.
Functions 4 Operating modes Priority Description ④ Auto mode with time schedule via bus Presence detector Remark ● Standard presence mode: If a room is occupied, the operating mode changes to Comfort. This overrides the operating mode on the thermostat. Unoccupied rooms set back the thermostat to the previous operating mode. ● Hotel presence mode: If a room is unoccupied, the operating mode changes to Economy. This overrides the operating mode on the thermostat.
4 Functions Operating modes You can change the operating mode by pressing the operating mode button. The selected operating mode remains "temporary" until command "Room operating mode: Time switch" is received.
Functions Operating modes P002 Available op. mode End user op. mode button 4 Description Schedule via bus 1 Recommended for commercial buildings: ● Switching manually between modes by pressing the operating mode button ● User settings are temporary and valid until the next switching event ● Economy is not available Note: Comfort mode can be temporarily extended (P102).
4 Functions Operating modes Presence detector The operating mode can be changed to Comfort or Economy based on room occupancy (room occupied or unoccupied, via presence detector or keycard). For details, see Presence detector [➙ 47] Temporary timer to extend Comfort mode Comfort mode can be temporarily extended (e.g., working after business hours or on weekends) when the thermostat is in Economy mode. 1. Press the operating mode button to return to Comfort for the preset period (P102). 2.
Functions 4 Operating modes During the extended presence/absence periods, symbol Function if no time schedule is received via bus User profile for Operatin Mode Function operating mode g mode button (selected via P002) when activating function P002 = 1: P002 = 2: P002 = 3: Note P002 = 1: P002 = 2: P002 = 3: A6V11545892_en--_b Operating mode during function Operating mode at the end of function Comfort Extension Comfort Protection Comfort Absence Protection Comfort Comfort or Economy Ext
4 Functions Operating modes 4.2.2 Communication examples The following examples show 3 typical applications for a central time schedule together with local control of the room operating mode. The room operating mode in rooms 1…3 of a building is determined by the time schedule. Window contacts are installed in all rooms.
Functions Operating modes Example 2 A6V11545892_en--_b 4 Interaction of user operation (operating mode button) and central time schedule In Room 2, the window is opened briefly, once in the morning and once in the late afternoon (1). Only the opening in the morning directly influences actual room operating mode. With the operating mode button, the operating mode can be changed between OFF and Auto or to temporary Comfort extension. ● During lunch break, the time schedule changes to Pre-Comfort.
4 Functions Operating modes Example 3 34 | 170 Application for "Window contact", "Presence detector" and "Central time schedule" In Room 3, the time schedule is between 13:00 and 17:00.
Functions Room temperature setpoints 4 4.3 Room temperature setpoints 4.3.1 Description Comfort mode The factory setting for the Comfort basic setpoint is 21 °C and can be changed in the thermostat’s EEPROM via P011, bus with communication object "Comfort basic setpoint" or Siemens smartphone application PCT Go. The last option selected is always used. The Comfort setpoint can be adjusted via rotary knob, or bus from a remote device like a touch panel, operator unit, etc.
4 Functions Room temperature setpoints Example Cooling setpoint adjustable: 25…40 °C Heating setpoint adjustable: 5…21 °C ● Absolute and relative setpoint (P104) For 4-pipe applications: – The thermostat runs on the setpoint of the active sequence: In heating mode, the heating setpoint is active and adjustable via rotary knob.
Functions Room temperature setpoints Comfort basic setpoint Comfort setpoint Economy heating setpoint 4) Economy cooling setpoint 4) 4 The source can be one of the followings: ● Local HMI ● KNX tool ● Central control unit ● Siemens smartphone application PCT Go The thermostat saves the setpoints to: ● EEPROM in the form of parameters ● Runtime memory The figure below shows the interrelation: 1) Only required for heating and cooling applications (see Setpoints and sequences [➙ 90]) 2) LTE-Mode: Shift i
4 Functions Room temperature setpoints Cooling setpoint tracking depending on outside temperature (P255) is not too great. If the outside temperature is higher than 26 °C and 6 K above the Comfort cooling setpoint, the related setpoint is shifted and kept 6 K below the outside temperature. This function can be enabled or disabled via P255. The current setpoint (used by the thermostat for temperature control) is available on the bus for use in the central control unit.
Functions Room temperature setpoints General notes ● ● ● Notes on setpoint adjustment (LTE-Mode with Synco only) ● ● ● ● ● ● ● Setpoint priority Setpoint master (RMB) A6V11545892_en--_b ● 4 The supported communication objects are different in LTE-Mode and S-Mode Changes via the local HMI or tools have the same priority (the last option is always used) Setting the Comfort basic setpoint resets the runtime Comfort setpoint only when P103 = 0 Central setpoint shifting is used for summer/winter compens
4 Functions Application overview 4.4 Application overview The RDG2..KN room thermostats support the following applications, which can be configured using the DIP switches at the rear of the unit or commissioning tool. Remote configuration Set DIP switches 1…5 to OFF (remote configuration, factory setting) to select an application via commissioning tool.
Functions 4 Application overview 4.4.
4 Functions Application overview 4.4.
Functions Application overview 4 4.4.
4 Functions Power supply selection for RDG200KN 4.5 Power supply selection for RDG200KN The RDG200KN can be powered either on AC 230 V or AC 24 V. The desired power supply is selected via the power switch on the rear of the device. The default setting is AC 230 V.
Functions 4 Additional functions 4.
4 Functions Additional functions 4.6.1 Sensors and changeover functions Heating/cooling changeover via bus (KNX) The heating/cooling changeover information is received via bus. This is only possible if the control sequence is set to automatic heating/cooling changeover (P001 = 2) and no local input (X1, X2, U1) is assigned to this function. In required information is unavailable (e.g., due to data communication issues, power failure, etc.
Functions 4 Additional functions P151 (X1), P154 (X2) or P156 (U1) = 0 (default, normally open) P151 (X1), P154 (X2) or P156 (U1) = 1 (Normally close) Contact open Contact open ⇨ heating mode Contact closed ⇨ cooling mode Manual heating/cooling changeover (P001) ● ● External/return air temperature sensor (P150, P153, P155) ⇨ cooling mode Contact closed ⇨ heating mode Manual heating/cooling changeover means selection via changeover button on the thermostat by repeatedly pushing the button until
4 Functions Additional functions Time schedule via Bus Presence detector behavior Comfort mode When hotel guests leave their rooms (room is unoccupied), the operating mode changes to Economy. The buttons are locked and symbol is displayed. Economy mode ● ● Protection mode Presence detection has no influence on the operating mode. Not available ● ● ● Notes When hotel guests leave their rooms (room is unoccupied), the operating mode changes to Economy.
Functions 4 Additional functions The swap function optimizes use of heating/cooling energy in mixed systems. E.g., when the fan coil units are combined with radiant heating/cooling panels, it is better to start heating using the panels (1 st stage heating, YHC1) and start cooling using the fan coil unit (1 st stage cooling, YHC2). Enable the swap function by setting P254 (YHC2 output signal, 1 st stage in cooling) to ON, depending on the requested control signal.
4 Functions Additional functions If these functions are required, the total maximum current on the relay outputs (Q1+Q2+Q3) must not exceed 2 A. The relay output function can be enabled and tested as follows: Switching off external equipment in Protection mode Relay output function on … Enable function via Expert level parameter Test function via diagnostic parameter Q1 P400 d08 Q2 P401 d09 Q3 P402 d10 The external equipment (e.g.
Functions Additional functions 4 To reduce wear and tear on the HVAC equipment, the minimum output On/Off time of the Qx relay output can be adjusted (1…20 minutes) via P212 and P213. The factory setting is 1 minute. Note When the operating mode is changed from Comfort to Economy or Protection, the relay contact remains energized until the end of the minimum on time set via P212. 4.6.
4 Functions Additional functions In case the air flow is too low (especially with DC 0...10 V fans), this prevents cold air from dumping into the room/warm air from bubbling straight up instead of circulating. To enable this function, the multifunctional input, to which the supply air sensor is connected, needs to be set to "Supply air sensor" (e.g., P150 = 9). Then the parameters for the limits are displayed (P063: minimum supply air temperature, P064: maximum supply air temperature).
Functions 4 Additional functions Dewpoint monitoring Dewpoint monitoring is essential to prevent condensation on the chilled ceiling (cooling with fan disabled, P350 = 0) and associated damages to the building. A dewpoint sensor with a potential-free contact is connected to multifunctional input X1, X2 or U1. If there is condensation, the cooling valve is fully closed until no more condensation is detected, and the cooling output is disabled temporarily.
4 Functions Additional functions 4.6.5 User operation / Indication Note When the thermostat is set as slave (P258 = 0), P005 (scheduler), P028 (keypad), P110 (energy indicator) and P111 (energy indicator range) are invisible and the slave synchronizes the related operation with its master. Button lock (P028) If the "Button lock" function is enabled by P028, lock or unlock them by pressing the right button for 3 seconds.
Functions 4 Additional functions – – Fan speed: The manual fan is below or equal to the auto fan speed value Operating mode: The manual mode is lower or equal to the scheduler mode ● Red leaf: The settings exceed the preset energy-efficiency range P110 configures the green leaf function: ● 0 = Disabled (OFF) ● 1 = Green and red dimmed down ● 2 = Green dimmed down / red fixed ● 3 = Green and red fixed Energy-efficient setting Set Time / date Exceed the preset energy-efficient range Touch to reset user
4 Functions Additional functions Set DATE The scheduler function must be enabled before setting the date: ● Press once and then turn the rotary knob or press select programming mode DATE. ● Press ● Turn the rotary knob to select month / weekday / year, then press button once. For example, enter the year setting. The Year value flashes and can be changed by turning the rotary knob. ● once to enter the date setting.
Functions 4 Additional functions 4.6.6 Humidity Humidity control (P007, P450) Room humidity Humidity control limits humidity in the room according to the selected setpoint (low/high) by shifting the temperature setpoint, or by enabling outputs to release the external equipment as needed, e.g., the dehumidifier or humidifier. Humidity control is active in Comfort mode when P450 is set to 1. The function can be disabled by setting P450 to 0 (factory setting).
4 Functions Additional functions Note The maximum temperature shift setpoint value is reached at setpoint humidity high (P024) +10%. The contact for the dehumidifier is released at setpoint humidity +15%. Dehumidification Applications with a DC 0...10 V fan: ● Enable the function to control the external dehumidifier directly via relay output by setting P400 (output Q1), P401 (output Q2) or P402 (output Q3) to 7.
Functions Additional functions 4 Note For heating and cooling applications, the value of the dead zone (P055) must be bigger than the maximum shifting temperature setpoint (P461), to avoid changeover between heating and cooling sequences in the event of fast humidity changes in the room.
4 Functions Additional functions 4.6.7 Scheduler Scheduler (P005) The local scheduler function is enabled via P005 (factory setting: disabled) or DIP switch (DIP9 = ON). The DIP switch setting takes priority. Scheduler allows users to set the following programming modes: ● Set schedule for Comfort and Economy WARNING Time synchronization via bus Time of day and date information are received from a Synco controller with time master function (RMB, RMB, OWZ, etc) or any other KNX device e.g.
Functions Additional functions Note ● 4 In Edit mode (value flashes), press to delete schedule or (Esc) to cancel the change. The maximum number of set schedules is three per day. ● Schedule overlap In same schedule, the switching point for Economy cannot be earlier than that for Comfort. E.g. Comfort is from 8:00 to 11:00 and Economy from 11:00 to 15:00. The edited switching point for Economy starts at 10:30. Afterwards, press once to confirm the change.
4 Functions Additional functions 4.6.8 Master/slave The master/slave function has the following features: ● ● ● ● ● ● ● ● ● ● ● 62 | 170 For large rooms / open spaces, to save energy by synchronizing HVAC equipment and avoid running different equipment in heating and cooling at the same room. The master provides the room temperature, setpoint, operating mode heating / cooling sequence and humidity value and manual fan speed setting (if requested) to all slaves in the same group.
Functions Additional functions 4 Window contact On the master: The master switches the group’s operating mode depending on the window contact state. The operating mode returns to Comfort when the window is closed. The window contact state is provided via either local input or bus. When the thermostat receives information from both sources, the local input takes priority.
4 Functions Additional functions 4.6.8.1 Alarm management master / slave The master receives faults and alarms from its slaves and displays the higher priority alarm with the slave identification number in the order received. If the master has its own faults and alarms, it displays them instead. The slave sends the fault or alarm with highest priority to the master. If the priority of a new fault or alarm is higher than that sent, the slave sends the new one to replace the original.
Functions 4 Additional functions 4.6.8.2 Master/slave communication in LTE-Mode The master thermostat shares the configuration with its slaves for the following: ● Room temperature and humidity value ● Operating mode ● Manual fan speed ● Current room setpoint and ChangeOverWaterStatus If any of the above value is changed on the master, the change is synchronized to all slaves within the same zone. For master/slave configuration, see Master/slave configuration in LTE-Mode [➙ 113].
4 Functions Additional functions 4.6.9 Preventive operation Avoid cold air in heating mode (P365) For the heating coil to reach its temperature, fan start can be delayed by a time period set via P365. Avoid damage from moisture (P363, P364) In very warm and humid climates, the fan runs periodically or continuously at a low fan speed (e.g., in empty apartments or shops) in Economy mode via P364, to avoid damage from moisture due to lack of air circulation.
Functions 4 Control sequences 4.7 Control sequences 4.7.1 Sequence overview (setting via P001) The main control sequence (water coil sequence of the fan coil unit) can be set via P001. The following sequences can be activated in the thermostats (with or without auxiliary heating). The available sequences depend on the application (selected via DIP switches, see Application overview [➙ 40]).
4 Functions Control sequences 4.7.2 Application mode Application mode The behavior of the thermostat can be influenced via building automation and control system (BACS) and bus using command "Application mode". Cooling, heating or both can be enabled or disabled using this signal. Application mode is supported in LTE-Mode and S-Mode. RDG2..
Functions Control sequences Application mode (via bus) State Control sequence state changeover/continuous (ACS diagnostic value) heating or cooling Auto (0) Heating Heating Cooling Cooling Heating Heating Cooling Heating Heating Cooling Cooling Cooling Heating Heating Cooling Cooling Heat (1), (2), (8) Cool (3), (5) Night purge (4), Fan only (9) Heating and cooling 4 With a 4-pipe, 2-pipe with electric heater, and 2-pipe with radiator application, the control sequence state is based on
4 Functions Control sequences 4.7.3 2-pipe fan coil unit In 2-pipe applications, the thermostat controls a valve in heating/cooling mode with changeover (automatically or manually), heating only, or cooling only (factory setting, P001 = 1). On/Off control Control sequence On/Off control output The diagrams below show the control sequence for On/Off control.
Functions 4 Control sequences 4.7.4 2-pipe fan coil unit with electric heater Heating or cooling with auxiliary heater In 2-pipe applications with electric heater, the thermostat controls a valve in heating/cooling mode with changeover, heating only, or cooling only plus an auxiliary electric heater. Cooling only is factory-set (P001 = 1) with enabled electric heater (P027).
4 Functions Control sequences Factory setting P217: 0.0 kW, setting range: 0.0…1.2 kW. On/Off control Control sequence On/Off output Modulating control: 3-position, PWM or DC 0…10 V Control sequence modulating control output The diagrams below show the control sequence for On/Off control.
Functions 4 Control sequences 4.7.5 2-pipe fan coil unit with radiator or floor heating Heating or cooling with radiator or floor heating In 2-pipe applications with radiator, the thermostat controls a valve in heating/cooling mode with changeover, heating only, or cooling only plus a radiator valve. Cooling only is factory-set (P001 = 1). Radiator, active in cooling mode In cooling mode, the valve receives an Open command if the acquired temperature is above the setpoint.
4 Functions Control sequences Modulating control: 3-position, PWM or DC 0...10 V The diagrams below show the control sequence for modulating PI control.
Functions 4 Control sequences 4.7.6 2-stage heating and cooling 2-stage heating or cooling In 2-stage applications, the thermostat controls 2 valves or 2-stage compressors in series: ● 2-pipe/2-stage: in heating or cooling mode or changeover (automatically or manually). "Cooling only" is factory-set (P001 = 1) ● 4-pipe/2-stage: in heating and cooling mode or changeover (manually).
4 Functions Control sequences 4.7.6.1 2-pipe/2-stage heating or cooling Heating mode In heating mode, the 1 st stage is activated if the acquired temperature is below the setpoint. The 2nd stage is activated if the acquired room temperature drops below "setpoint" minus "setpoint differential". Cooling mode In cooling mode, the 1 st stage is activated if the acquired temperature is above the setpoint.
Functions 4 Control sequences Modulating control: 3-position, PWM or DC 0…10 V The diagrams below show the control sequence for modulating PI control.
4 Functions Control sequences 4.7.6.2 4-pipe/2-stage heating and cooling Heating and cooling mode In 4-pipe/2-stage applications, the thermostat controls max. 4 valves in heating and cooling mode or heating/cooling mode by manual selection. Heating and cooling mode (P001 = 4) is factory-set. The 1st stage is activated when the acquired temperature is below (heating) or above (cooling) the setpoint. The 2nd stage is activated when the acquired room temperature exceeds the "setpoint differential" value.
Functions 4 Control sequences Modulating control: PWM or DC 0…10 V The diagrams below show the control sequence for modulating PI control.
4 Functions Control sequences 4.7.7 4-pipe fan coil unit Heating and cooling In 4-pipe applications, the thermostat controls 2 valves in heating and cooling mode, heating/cooling mode by manual selection. Heating and cooling mode (P001 = 4) is factory-set. 4-pipe application with manual changeover The heating or cooling output can be released via operating mode button if P001 is set to Manual (P001 = 3). On/Off control The diagrams below show the control sequence for On/Off control.
Functions 4 Control sequences Modulating control: 3-position, PWM, or DC 0...10 V Note A6V11545892_en--_b The diagrams below show the control sequence of modulating PI control.
4 Functions Control sequences 4.7.7.1 4-pipe application with PICV and 6-port control ball valve as changeover (RDG260KN) In a 4-pipe fan coil application with DC 0...10 V fan control, the RDG260KN controls a combi valve (PICV) in combination with a 6-port ball valve as changeover. Note: Set DIP# 1 & 4 to ON (4-pipe with 6-port ball valve as changeover and PICV). Principle This application is used in 4-pipe systems with heat exchanger and differential pressure controller (using a PICV).
Functions 4 Control sequences 4.7.8 4-pipe fan coil unit with electric heater Heating and cooling with auxiliary heater In 4-pipe applications with electric heater, the thermostat controls 2 valves in heating and cooling mode by manual selection, heating only, or cooling only plus an auxiliary electric heater. Heating and cooling is factory-set (P001 = 4).
4 Functions Control sequences Modulating control: 3-position or PWM The diagrams below show the control sequence for modulating PI control.
Functions 4 Control sequences 4.7.9 Chilled/heated ceiling and radiator applications For chilled/heated ceiling and radiator applications ● Set the corresponding basic application see Application overview [➙ 40]. ● Disable the fan (P350) The following applications are available: Application for chilled/heated ceiling, radiator Basic application Section Sequences Chilled/heated ceiling with changeover 2-pipe 2-pipe fan coil unit [➙ 70] H C (\) (/) Chilled/heated ceiling and 2-pipe with electric e
4 Functions Control sequences Hydraulic and control diagram of the 6-port control ball valve W YH YC Kv T[℃] Room temperature setpoint Control command "Valve" (heating) Control command "Valve" (cooling) Vale flow Room temperature Default integral action time TN is set to 45 minutes. Control output configuration Fan control 86 | 170 If the thermostat is set to control sequence "H/C ceiling with 6-port control ball valve", only output Y10 can be used to control the 6-port control ball valve.
Functions 4 Control sequences 4.7.9.2 Chilled/heated ceiling with pressure independent combi valve (PICV) and 6-port ball valve for changeover (RDG260KN) The RDG260KN is able to control a PICV for a chilled and heated ceiling application together with a 6-port ball valve for changeover. This application is only available, if the thermostat is set to a 4-pipe with 6-port ball valve as changeover and PICV application (DIP1 & DIP4 = On, see Applications for universal systems [➙ 42]).
4 Functions Control sequences To limit the medium mix (heating and cooling medium), the changeover and the control signal (DC 0…10 V) both work in sequence. When control sequences change, the thermostat closes the combi valve and releases the corresponding relay to operate the ball valve. A delay of 120 seconds is needed before the combi valves can be operated by the thermostat. When the relay to ensure the ball valve is in the right H/C position, the control signal for the combi valve is released.
Functions 4 Control sequences 4.7.11 Applications with external AQR sensor or QMX room operator unit The equipment combination is intended for commercial buildings, offices, schools, museums, shops, etc. Advantages of equipment combination AQR/QMX sensor LTEMode With sensor AQR25.. or QMX3..0 A6V11545892_en--_b S-Mode a) Sensor can be installed in the optimal place for temperature and humidity measurement. ✓ ✓ b) Unauthorized persons cannot change settings on sensors installed in the room.
Functions 4 Control sequences 4.7.12 Setpoints and sequences 2-pipe applications In changeover applications, the Comfort setpoints for heating and cooling sequence are the same (w). In 2-pipe applications with electric heater, the Comfort setpoint is either at the first heating sequence (in heating mode) or at the cooling sequence (in cooling mode).
Functions 4 Control outputs Application Economy/Protection mode Comfort mode Heating and cooling P010 = 1 Heating only 1) or heating and cooling P010 = 2 Cooling only 1) or heating and cooling P010 = 2 Heating and/or cooling 4-pipe 4-pipe with electric heater 4-pipe/ 2-stage 1) Manual changeover, P001 = 3 W = setpoint in Comfort mode WHeatEco/Prot = heating setpoint for Economy or Protection mode WCoolEco/Prot = cooling setpoint for Economy or Protection mode YE = electric heater sequence 4.
4 Functions Control outputs Control output DC 0…10 V DC 2…10 V DC 10…0 V DC 10…2 V Y10 Y10 Y10 Product No. RDG260KN for Y10 6-port control ball valve application On/Off control signal (2-position) The valve receives the On command via control output Y1 (Q1 on RDG260KN) or Y3 (Q2 on RDG260KN), if: 1. The acquired room temperature is below the setpoint (for heating) or above the setpoint (for cooling), 2.
Functions 4 Control outputs Synchronization 1. When the thermostat is powered up, a close command for the actuator run time by + 150 % is issued to ensure the actuator closes fully and synchronizes to the control algorithm. 2. When the thermostat calculates the positions "fully close" or "fully open", the actuator run time is extended by + 150 % to ensure the correct actuator position is synchronized to the control algorithm. 3.
4 Functions Control outputs DC 0...10 V for valve actuators The demand calculated by PI control from the current room temperature and setpoint is provided via Y10, Y20, Y30 and U1 (U1, for 4-pipe/2-stage applications) to the valve actuator as a continuous DC 0...10 V signal. Note ● ● DC 0...10 V for electric heaters ● ● ● Note Parameter P256 (RDG260KN) sets the heating flow limitation if PICV is installed at output for heating and cooling. See Additional functions [➙ 45].
Functions 4 Control outputs 4.8.2 Control output configuration (setting via DIP switches 7/8 or tool, and P201/P203/P204/P205) Overview Application Fan DC 0...10 V 2-pipe Control outputs 3Mod.
Functions 4 Control outputs RDG200KN DIP NO.: 7…8 ➨ ON = The type of the control outputs (2- or 3-position) is set via DIP switches 7 and 8. Patterns of DIP switches 7 and 8: , OFF = Y1/Y3 = 2-position (PWM) 2-position (PWM) 3-position 3-position Y2/Y4 = 2-position (PWM) 3-position 2-position (PWM) 3-position Notes ● RDG260KN Applications with DC 0...10 V fan control (Y50) or without fan: The type of valve actuator control outputs can be changed from DC 0...
Functions Fan control 4 4.9 Fan control Overview fan outputs In RDG200KN and RDG260KN, the available fan output signals are one On/Off 1speed/3-speed fan or one modulating fan DC 0...10 V and control type can be selected via P351. The fan control signal (DC 0…10 V or 3-speed) is selected via DIP switch 6, local HMI (P351) or tool (ACS, ETS or Siemens smartphone application PCT Go). The fan operates in automatic mode or at the speed selected in manual mode.
4 Functions Fan control Fan control with modulating heating/cooling control (PWM, 3-pos or DC 0...10 V) For 3-speed fan control: The individual switching points for each fan stage can be adjusted via P353…P355. The fan speed switch off point is 20% below the switch on point. The diagrams below show fan speed control for modulating PI control. For DC 0…10 V fan control: If DC 0...
Functions Fan control 4 1. The switching point for low fan speed is synchronized to the heating/cooling output. P353 (switching point fan speed low) is not relevant. 2. The maximum switching range of the fan (XpHFan /XpCFan) is defined by the switching differential (SDH/SDC) via a reference table. Heating/cooling 1- or 3-speed fan DC 0...
4 Functions Fan control Manual operation DC 0...10 V fan Fan speed I = Min. fan speed selectable via P357 Fan speed II = Medium fan speed selectable via P358 When the DC fan characteristic is not linear, the fan speed II can be adapted to an efficient manual speed II. Fan speed III = Max. fan speed selectable via P359 (heating), P360 (cooling) Note: Manual fan settings do not influence control signals "Heating" and "Cooling".
Functions Fan control Notes ● ● 4 The output for the 1 st stage (YHC1) in heating mode is also the 1 st stage in cooling This function is available for DC/3-speed/1-speed fans Example 2 We recommend enabling the swap function on applications with fan coil units and floor heating/cooling. In this application, the fan runs during cooling demand (fan coil unit and floor cooling) and only in the 2 nd heating stage (with the fan coil unit).
4 Functions Fan control Combinatio 1st stage n signal 2nd stage signal Fan type Fan synchro Fan behavior XpH/XpC, P/PI control 6 On/off DC DC 2nd sequence 7 DC On/off DC 1st sequence XpH/XpC, P/PI control 8 DC On/off DC 2nd sequence 9 DC DC 3-speed 1st sequence XpH/XpC, P/PI control 10 DC DC 3-speed 2nd sequence XpHFan /XpCFan, P-control XpH/XpC, P/PI control Fan operation as per heating/cooling mode, or disabled Fan operation can be limited to be active with cooling only o
Functions Fan control 4 ● Auto fan runs in the dead zone at low speed during cooling only (P029 = 2). During heating, the fan does not run in the dead zone. ● Auto or manual fan does not run in the dead zone (P029 = 3) ● Auto or manual fan runs in the dead zone at low speed during heating and cooling (P029 = 4) ● Auto or manual fan runs in the dead zone at low speed during cooling only (P029 = 5). During heating, the fan does not run in the dead zone.
4 Functions Multifunctional input, digital input Fan operation with combi valve PICV and a 6-port ball valve as changeover Fan control is set to enable by default (P350 = 1), if the thermostat is set with control sequence "H/C ceiling with PICV and 6-port ball valve as changeover".
Functions Multifunctional input, digital input # Input function Description 4 Dewpoint monitor Digital input for dewpoint sensor to detect condensation. Cooling is stopped in the event of condensation. DI 5 Enable electric heater Digital input to enable/disable the electric heater via remote control. Enable electric heater is also possible via bus. In this case, do not assign the function to local inputs X1, X2, U1. See also Control sequences [➙ 67].
4 Functions Multifunctional input, digital input # Hotel presence detector Input function Description Type X1/X2/U1 11 External temperature limit The sensor is connected to the pipe and AI measures the temperature of the floor heating water. When the value exceeds the selected limit (P252), heating is stopped.
Functions Handling system faults 4 4.11 Handling system faults Temperature out of range If the room temperature exceeds or drops below the measuring range, i.e. above 49 °C or below 0 °C, the limiting temperatures blink, e.g., 0 °C or 49 °C. In addition, the heating output is activated if the current setpoint is not set to Off, the thermostat is in heating mode and the temperature is below 0 °C. For all other cases, no output is activated.
4 Functions KNX communications 4.12.2 Master/slave configuration in KNX S-Mode Setting master or slave Master and slave can be bound via parameters or communication objects in SMode. 1 Open the project in ETS and select a device. 2 Click the Parameters tab and set parameter P258 as Master or Slave. 3 If a thermostat is set as slave, parameter P259 value needs to be set accordingly.
Functions KNX communications Note 4 The following two master/slave binding options are alternatives. They cannot be used together. Master/slave binding via P901 & P902 4 Master and slave binding is set using parameters P901 and P902.
4 Functions KNX communications Master/slave binding via communication objects 4 The master/slave binding is set using communication objects, for object details, see Master/slave communication in KNX S-Mode [➙ 65].
Functions KNX communications 4 4.12.3 LTE-Mode LTE-Mode was specifically designed to simplify engineering. Unlike with S-Mode, individual connections (group addresses) need not be created in the tool. The devices autonomously establish connections.
4 Functions KNX communications Geographical zone (space zone) (Apartment . Room . Subzone) Apartment = ---, 1...126 Room = ---, 1...63 Subzone = fix 1 Zone where an RDG2..KN KNX room thermostat is physically located. Other room-specific devices may also be located in this zone. Information exchanged in this zone is related specifically to the device like operating mode, setpoints, room temperature, etc. The designations "Apartment", "Room" and "Subzone" are not necessarily literal. E.g.
Functions KNX communications 4 4.12.5 Master/slave configuration in LTE-Mode 1 2 In the ACS program, select Plant ➙ Open to open the plant. To open the parameter settings, select Applications ➙ Plant engineering. 3 Select Plant engineering ➙ Device, then set parameter P258 as Master or Slave.
4 Functions KNX communications 4 If the device is set as Slave, parameter P259 value needs to be set accordingly. 5 Select Applications ➙ Plant operation ➙ Settings ➙ Communication, then set parameters P901 and P902.
Functions KNX communications 4 4.12.6 Example of heating and cooling demand zones The building is equipped with Synco controls on the generation side and RDF../RDU../RDG.. room thermostats on the room side. Explanation relating to the illustration In the case of a typical application, the individual RDF../RDG.. room thermostats send their heat demand to the primary controller (in the above example to the RMH760). (1) and (2) designate the numbers of the distribution zone.
4 Functions KNX communications LTE-Mode/S-Mode Reducing the bus load Fixed times are specified as follows: ● Receive timeout: 31 minutes ● Send heartbeat: 15 minutes Object [KNX obj. no.] I/O Minutes Default value Room operating mode: Time switch [13] Receive 31 Comfort Application mode [48] Receive 31 Auto Heating/Cooling mode status [46] Receive 31 Heating Individual zones can also be disabled (out of service) via control parameter if they are not being used.
Functions 4 Communication objects The table below shows the error code and default alarm texts.
4 Functions Communication objects Object No. and name 1 System time 2 Date 3 Time of day Thermostat RDG Object No.
Functions 4 Communication objects 4.13.2 Description of communication objects Obj 1 Object name System time Function Time and date Type/ length 19.001 8 bytes Flags CWU System time for display on the room thermostat. See P009 (3 or 4) 2 Date Date 11.001 3 bytes Obj CWU Day, month and year for display on the room thermostat. See P009 (3 or 4) 9 10 11 12 Object name Room operating mode: Preselection - Auto - Comfort - Economy - Protection Function Trigger Type/ length 1.
4 Obj Functions Communication objects Object name Function Type/ length Flags 21 Room temp: [P19] Temperature 9.001 CW Economy heating 2 bytes setpoint Communication object adjusts the Economy heating setpoint used by the thermostat (Master) (see Setting and adjusting setpoints [➙ 36]). It directly changes the value of the local parameter "Economy heating setpoint" P019. The range is --- (0), 5 °C…P020 (or max. 40 °C).
Functions 4 Communication objects Obj 35 Object name Function Extended comfort ON mode status OFF Type/ length 1.011 1 bit Flags CRT Obj Object name Type/ length Function 48 Application mode HVAC control mode 0 Auto (default) Heating and/or cooling 1 Heat Heating only 2 Morning warmup* Heating only The thermostat receives and works with the room temperature from an external sensor.
Functions 4 Communication objects Obj 53 Object name Fan output Function 0…100 % Type/ length 5.001 1 byte Flags Obj Object name Heating, control value status Type/ length Function Inactive Active 1.011 1 bit Flags CRT 65 CRT 3-speed fan Indicates the control status of heating actuator of the first stage Indicates the current fan speed as a value 0...100 %.
Functions 4 Communication objects Obj 75 Object name Hum. Control mode Function Inactive Humidification Dehumidification Type/ length 20.115 1 byte Flags CRT Obj 83 Object name Enable or disable Leaf indication Function Disable Enable Type/ length 1.
4 Obj 93 Functions Communication objects Object name Room temp: Current cooling setpoint (receive) Function Temperature Type/ length 9.001 2 bytes Flags CWU Communication object adjusts the current cooling setpoint received by the thermostat from bus (see Setting and adjusting setpoints [➙ 36]). The range is 5...40 °C. S-Mode object needs to be enabled by setting Room temp: Current setpoint to as group object in ETS. 94 Room operating mode: Status (receive) Comfort Economy Protection 20.
Functions Communication objects (LTE-Mode) 4 4.14 Communication objects (LTE-Mode) RDG Geographical zone A.R.S Room operating mode: Time switch (Time switch zone) X.1.1/X.Y.1 Application mode Room operating mode: Preselection Geographical zone A.R.S X.Y.1 Room temperature Comfort setpoint Room humidity [% r.h.] Setpoint heating Setpoint cooling Fan speed Setpoint shift heating Setpoint shift cooling Heat distr.
4 Functions Control parameters 4.15 Control parameters To optimize control performance, a number of control parameters can be readjusted on the thermostat via HMI, commissioning/operating tool, or Siemens smartphone application PCT Go. These parameters can also be set during operation without opening the unit. In the event of a power failure, all settings for control parameter, setpoint, operating mode and changeover value are retained.
Functions Control parameters 4 4.15.2 Setting/downloading parameter via tool The control parameters can be adjusted via bus either by parameter download during commissioning or during normal operation with a tool like ACS. With the ACS tool, the parameters can be changed… ● During commissioning via parameter download (all parameters) ● During operation via Popcard (most parameters) ACS OZW772 Web server Most parameters can be changed during operations using the OZW772 web server.
4 Functions Control parameters Antenna area Unpowered thermostat from individual package DIP switche settings take priority: ● If all DIP switches are set to Off (default), PCT Go can be used to change the application (e.g. 2-pipe) ● If an application is set via DIP switches, PCT Go cannot change it. Change settings while the device is powered and running: ● Application settings require a device reboot. ● Settings such as setpoint and HMI tuning take effect a few seconds later.
Functions Control parameters 4 4.15.4 Service level parameters RDG200KN RDG260KN Dependencies 0 = Heating only 1 = Cooling only 2 = H/C changeover auto 3 = H/C changeover manual 4 = Heating and cooling ✓ ✓ P002 Service level P001 Control sequence 1) 2-pipe: 1 = Cooling only 4-pipe: 4 = Heating and cooling Range Name Factory setting Parameter Parameter display depends on selected application and function. Appl means application.
Functions 4 RDG260KN ON ON: Enabled OFF: Disabled ✓ ✓ Appl 0 0 = Unlocked 1 = Auto lock 2 = Manual lock 3 = Auto lock the operating mode 4 = Auto lock the Setpoint shift 5 = Auto lock fan speed 6 = Auto lock operating mode, setpoint shift 7 = Auto lock operating mode, fan speed 8 = Auto lock fan speed, setpoint shift 9 = Auto lock scheduler 10 = Auto lock operating mode, scheduler 11 = Auto lock scheduler, fan speed 12 = Auto lock operating mode, scheduler, fan speed 13 = Auto lock scheduler, setpo
Functions 4 Control parameters 4.15.5 Expert level parameters with diagnostics and test Factory setting Range RDG200KN RDG260KN Dependencies Parameter display depends on selected application and function. Parameter values are only visible when the device is set as Master (M), Slave (S) or both identification (✓). P050 Heat P-band Xp 2K 0.5…6 K ✓ ✓ P001 P051 Switching differential heating 1K 0.
Functions 4 ✓ ✓ M ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ M ✓ ✓ ✓ ✓ ✓ ✓ ✓ M ✓ ✓ M ✓ ✓ M ✓ ✓ M ✓ ✓ ✓ ✓ d01 ✓ ✓ ✓ ✓ ‒ ‒ ‒ ‒ ‒ ‒ ‒ ✓ ✓ ✓ ✓ ✓ ‒ ‒ ‒ ‒ ‒ Appl Appl Appl ‒ ✓ Appl 1200 s 1 = 2 sequence heating, 2 sequence cooling 2 = 2 sequence heating, 1 sequence cooling 3 = 1 sequence heating, 2 sequence cooling 1 = 3-position 2 = On/Off 3 wires 3 = PWM 4 = On/Off 5 = DC 6 = 6-port valve (DC 0… 10 V) 7 = 6-port valve (DC 2… 10 V) 8 = Inverse signal, 6-port valve (DC 10…0 V) 9 = Inverse signal 6-port valve (DC 10…2 V)
Functions 4 Range RDG200KN RDG260KN 150 s 20…300 s ✓ ‒ P214: P201 P215: P203 0 kW 0.0…1.2 kW ✓ ✓ P203, P204 Features P250 Valve kick OFF ✓ ✓ ‒ P251 7) Purge time (every 2 hours) --- ON = Enabled OFF = Disabled --- (0, Not active), 1…5 min M M P258 Flow temp limit floor heating Swap sequences between H and C (2-pipe / 2-stage) Track setpoint for cooling depends on outside temperature Flow limitation in heating mode for PICV Master/Slave 28 °C (82 °F) OFF 10...
Functions 4 RDG260KN 0 0 = No function 1 = Switch OFF in Protection 2 = Switch ON in Heat/Cool demand 3 = Switch ON in Heat demand 4 = Switch ON in Cool demand 5 = Heating sequence active 6 = Cooling sequence active 7 = External dehumidifier control 10) 8 = External humidifier control 10) ✓ ✓ ✓ ✓ ✓ ✓ ✓ M M ✓ ✓ ✓ ✓ ✓ ✓ ✓ M M P350, P351, P258 Controller P450 10) Control strategy 0 M M P258 P451 10) Humidity control strategy 2 M M P450, P258 P461 10) T setpoint shift (humidity) Side Features
Functions 4 Control parameters Diagnostics and test Parameter Name Range Dependencies Diagnostics and test d01 Application number 0 = (No application) 1 = 2-pipe 2 = 2-pipe with electric heater 3 = 2-pipe with radiator 4 = 4-pipe 5 = 2-pipe / 2-stage 6 = 4-pipe with electric heater 7 = 4-pipe / 2-stage 8 = 4-pipe:6-port H/C (no fan) 9 = 4-pipe:6-port CO +PICV ‒ d02 X1 state "---" = Function not selected 0 = Not activated (for DI) 1 = Activated (DI) 0…49 °C = Current temp.
5 Supported KNX tools ETS 5 Supported KNX tools 5.1 ETS ETS ETS is an engineering tool to fully commission RDG2..KN room thermostats. ETS can implement the following functions: ● Define and download the physical address ● Define and download the application (plant type, control sequence) ● Set up and download thermostat control parameters ● Set up and download group addresses This document does not describe how to operate ETS and set up a device. Refer to the KNX Manual [5] [➙ 5] for more details.
Supported KNX tools ETS 5 5.1.1 Setting parameters in ETS 1 Open the project in ETS and select a device.
5 Supported KNX tools ETS 3 Plant type (application), Control Sequence and other control parameters ([Pxx] description) can be downloaded. For more details on control parameters, see Control parameters [➙ 126]. Notes ● ● Humidity parameters ETS version 4 or higher is used to assign communication objects to group addresses (S-Mode) ETS version 4 or higher is used to download the application and parameters 1 Select Room relative humidity in the left pane to display humidity parameters.
Supported KNX tools ACS tool 5 5.2 ACS tool ACS The ACS tool is used to commission the RDG2..KN KNX room thermostats (physical address, application, parameters). They can be operated or monitored by bus during normal operation. This section does not describe how to define the physical address and only provides a brief overview of ACS main function. For more information, refer to the ACS online help. Setting RDG2..KN KNX parameters is only supported by ACS version 13.03 or higher.
5 Supported KNX tools ACS tool 5.2.1 Setting parameters in ACS In the ACS program, select Plant ➙ Open to open the plant. To open the parameter settings, select Applications ➙ Plant engineering. The application and control parameters can be adjusted and downloaded. Line no. contains the parameter number as displayed in the parameter table. See Control parameters [➙ 126].
Supported KNX tools ACS tool Note! A6V11545892_en--_b 5 Some parameters in ACS have a range different from that on the room thermostats. The thermostat does not accept changes outside its range. This can be seen online in that a changed value returns to the original value. Use the ranges described in the parameter tables in Control parameters [➙ 126].
5 Supported KNX tools ACS tool 5.2.2 Operation and monitoring with ACS In the ACS program, select Plant ➙ Open to open the plant. To open monitoring and operation, select Applications ➙ Plant operation. ACS Parameter settings in ACS The ACS tool supports parameter settings even during normal operation. To change a control parameter, double-click the parameter in Standard popcard for the settings. Notes 142 | 170 ● ● Make sure you are logged in with sufficient access right.
Supported KNX tools ACS tool Plant diagram in ACS A6V11545892_en--_b 5 The ACS tool offers plant diagrams for easy monitoring and operation of the thermostat. To start the application, select Applications ➙ Plant operation ➙ Standard diagram.
5 Supported KNX tools ACS tool The ACS tool provides standard plant diagrams for RDG2..
Supported KNX tools ACS tool Plant type Application configuration 5 Application configuration 4-pipe fan coil unit with PICV and 6-port H/C ceiling with PICV and 6-port control control ball valve as changeover ball valve as changeover – Fan operation: Must be enabled (P350 <> 0) – Fan operation: Disabled (P350 = 0) H/C ceiling with 6-port control ball valve – Fan operation: Disabled (P350 = 0) 2-pipe/2stage heating or cooling 2-pipe/2-stage fan coil unit 2-pipe/2-stage – Control sequence: No impa
5 Supported KNX tools ACS tool 5.2.3 Operation and monitoring with OZW772 HomeControl app for plant control The OZW772 web server allows users to operate a Synco HVAC system from a remote location – via a PC or from a smart phone using the HomeControl app. The start page displays the most important data points. A combination of menu/path navigation allows users to access all data points quickly and easily. The entire installation can be visualized in the form of plant diagrams.
Connection Connection terminals 6 6 Connection 6.
6 Connection Connection diagrams 6.2 Connection diagrams The connection workflow is as follows: ● Select fan control type: DC or 3-speed fan ● Select application type, e.g. 4-pipe ● Columns V1, V2, V3, V4 show the type of the outputs (e.g. for 4-pipe: YH for heating and YC for cooling) as well the available control signals ● Select the requested control output signals (e.g. 2-pos for heating, 2-pos for cooling) ● Equipment V1, V2 etc. stands for the connected equipment on each terminal, e.g.
Connection 6 Connection diagrams RDG200KN DC 0…10 V fan Application Equipment Terminals V1 2-pipe 1-speed/3-speed fan Y1 Terminals Y3 Y50 Q1, Q2, Q3 Y1 Y3 YHC DC Control outputs: 2-pos V1 3-pos Application ✓ V1 Equipment V1 V2 Y1 Y3 YHC YR YH YC YHC1 YHC2 Control outputs: 2-pos 2-pos V1 2-pos 3-pos V1 3-pos 2-pos V1 3-pos 3-pos V1 Y2 Y4 Y50 Q1, Q2, Q3 V2 V1 V2 YHC YE Y1 ✓ V2 Control outputs: 2-pos 2-pos V1 2-pos 3-pos V1 3-pos 2-pos V1 3-pos 3-
6 Connection Connection diagrams RDG260KN DC 0…10 V fan Application Equipment V1 YHC 2-pipe 1-speed/3-speed fan Terminals Y10 Q1 Y50 DC Control outputs: Application 2-pipe + RAD 4-pipe 2-pipe/2-stage DC On/Off Equipment V1 V2 YHC YR V1 V1 Q1 YH YC YHC1 YHC2 DC Control outputs: DC DC On/Off On/Off DC On/Off On/Off Application Equipment V1 V2 2-pipe with YHC YE electric heater Q2 Terminals Y10 Y20 V1 V1 V1 V1 V2 Q1 Q2 ✓ Y50 Q1, Q2, Q3 Application 4-pipe with electric heater DC DC DC
Connection Connection diagrams RDG260KN Chilled/heated ceiling with 6-port control ball valve 6 4-pipe with 6-port ball valve as changeover and PICV Application N2 Room thermostat RDG260KN V3 6-port modulating control actuator S1, S2, S3 Switch (keycard, window contact, presence detector etc.) V4 PICV control valve B1, B2, B3 Temperature sensor (return air temperature, external room temperature, changeover sensor, etc.
6 Connection Application examples 6.3 Application examples The examples are described for RDG260KN, but they also apply to RDG200KN. Control output (P201, P204) and terminals for the valves (Y1, Y2) need to be adapted accordingly. 6.3.1 Humidity control Note: In the following examples, P461 is configured based on the connected type of equipment. See details in Humidity [➙ 57]. Example 1: Dehumidifier, DC 0...
Connection Application examples Example 2: Dehumidifier, DC 0...10 V fan + valve, No shifting setpoint 6 2-pipe fan coil application for dehumidification, with DC 0...10 V fan and DC valve (without temperature setpoint shifting): Commissioning ● Fan ● ● Control strategy Setpoint high ● ● ● Temp. shift Valve Relay function Outputs used P351 = 3 (or DIP6 = OFF) P450 = 1 P024 = 50 % (factory setting) P461 = 0 P201 = 5 P402 = 7 (dehumidifier) ● ● ● M1 DC 0...
6 Connection Application examples Example 4: Dehumidifier + humidifier/DC 0...10 V fan 2-pipe fan coil application for dehumidification, with temperature setpoint shifting, dehumidifier contact, DC 0...10 V fan and DC valve, humidification is controlled by release contact: Commissioning ● Fan ● ● Control strategy Setpoint high ● ● Setpoint low Temp.
Connection Application examples 6 6.3.2 Relay functions Example 1: Switching off the fan coil unit 2-pipe fan coil application, fan coil unit off during Protection mode. Commissioning ● Fan ● ● Valve Relay function Outputs used P351 = 3 (or DIP6 = OFF) P201 = 5 P402 = 1 (Protection mode) ● ● ● ● M1 DC 0...10 V fan V1 DC valve *) L3 Fan coil K Relay *) Release contact RDG260KN See Technical data [➙ 160] for min. and max.
6 Connection Application examples Example 3: Compressor and reversing valve Compressor application, with reversing valve (heating/cooling) and DC 0...10 V fan: Commissioning Outputs used ● ● ● ● ● Application Control output Fan 4-pipe P201 = 4 (On/Off) P351 = 3 (or DIP6 = OFF) Relay function Heating/cooling – ON in demand: P401 = 2 – Energized mode: Heating P401 = 5 – Energized mode: Cooling P401 = 6 M1 DC 0...
Connection Application examples 6 6.3.3 Swap function and/or fan in the 2nd stage Example 1: Fan in the 2nd stage 2-pipe fan coil application for floor heating/cooling (2-stage heating/cooling), fan runs only in the 2nd stage: Commissioning ● ● ● Fan Valve Valve unit) Outputs used nd P350 = 4 (2 stage) P201 = 5 (floor) P203 = 5 (fan coil ● ● ● M1 V1 V2 units DC 0...10 V fan DC valve floor DC valve fan coil RDG260KN See Technical data [➙ 160] for min. and max.
6 Connection Application examples Example 2: Swap and fan in the 2 nd stage 2-pipe and 2-stage application with radiant heating/cooling panels, the fan only operates with the fan coil unit: ● Heating sequence: 1st panel and 2nd fan coil unit ● Cooling sequence: 1 st fan coil unit and 2nd panel Commissioning Outputs used ● ● ● ● ● Fan P350 = 6 (Cooling and 2nd stage heating) Valve P201 = 5 (panel) Valve P203 = 5 (fan coil unit) Swap P254 = 1 ● ● M1 DC 0...
Connection Application examples Example 3: Swap and fan in the 2 nd stage 6 2-pipe fan coil and 2-stage application with different types of equipment (On/Off control outputs), the fan only operates if output V1 is energized. Commissioning Outputs used ● ● ● ● Fan P350 = 5 (Heating and 2nd stage cooling) Valve P201 = 2 (equipment 1) Valve P203 = 2 (equipment 2) ● ● M1 DC 0...
7 Technical data 7 Technical data Power supply (RDG200KN) Operating voltage (L-N) AC 24 V ±20 % or AC 230 V +10/-15 % (selectable via slider) Frequency 50/60 Hz Power consumption 4 VA @ AC 24 V 7 VA @ AC 230 V ● No internal fuse! External preliminary protection with max. C 10 A circuit breaker required in all cases. ● Before switching on power, select the right power supply needed using the power switch on the rear of the device.
Technical data 7 Power supply (RDG260KN) Operating voltage (G-G0) DC 24 V: Make sure to connect G to + and G0 to - AC 24 V ±20 % DC 24 V ±2 V Frequency 50/60 Hz Power consumption 4 VA @ AC 24 V No internal fuse! External preliminary protection with max. C 10 A circuit breaker required for all cases.
7 Technical data Multifunctional inputs Temperature range -20…70 °C Temperature sensor input Type LG-Ni1000 Temperature range -40…70 °C Digital input Operating action Selectable (NO/NC) Contact sensing DC 0…5 V, max. 5 mA Insulation against mains SELV KNX bus Interface type KNX, TP Uart 2 (electrically isolated) Bus current 5 mA Bus topology: See KNX manual ("Reference documentation") Operational data Switching differential, adjustable Heating mode (P051) 1 K (0.
Technical data 7 Operational data Humidity calibration range ±10 % Settings and display resolution Setpoint 0.5 °C Present temperature value displayed 0.5 °C Environmental conditions Storage IEC 60721-3-1 Climatic conditions Class 1K3 Temperature -25…65 °C Humidity < 95 % r.h. Transport IEC 60721-3-2 Climatic conditions Class 2K3 Temperature -25…65 °C Humidity < 95 % r.h.
7 Technical data Meets the requirements for eu.bac certification See product list at: http://www.eubaccert.eu/licences-by-criteria.asp Application Device Fan coil units (2 pipes) RDG200KN thermal actuator Variable speed fan Fan coil units (2 pipes,2 wires) Variable speed fan Fan coil units (4 pipes) Variable speed fan Ceiling systems RDG260KN Actuator outputs Heating 0.1 220020 RDG200KN thermal actuator Cooling 0.1 Heating 0.1 Cooling 0.3 220019 RDG260KN Heating 0.1 220020 Cooling 0.
Technical data 7 Reference documentation Handbook for Home and Building Control - Basic Principles (EN:https://my.knx.org/shop/product?la nguage=en&product_type_category=bo oks&product_type=handbook DE: https://my.knx.
8 Dimensions 8 Dimensions Dimensions in mm RDG2..
Index Index 1 E 6-port ball valve.............................................88 Economy cooling setpoint .................................37 Economy heating setpoint.................................37 Electric heater enable/disable ....................... 105 Enable/disable electric heater................71, 83, 105 Expert level parameters ................................. 126 External/return air temperature ..................... 104 External/return air temperature sensor ................
Index KNX overview ..............................................107 KNX parameters ..........................................137 KNX S-Mode ................................................107 KNX tools....................................................136 L Local time of day .......................................... 60 LTE-Mode....................................................111 M Manual heating/cooling changeover................... 47 Manually select heating or cooling sequence ..
A6V11545892_en--_b 169 | 170
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