Regin RCFD-230C Manual
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Regin RCFD-230C Manual

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WE TAKE BUILDING
AUTOMATION PERSONALLY
en
MANUAL
RCFD-230C

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Summary of Contents for Regin RCFD-230C

  • Page 1 WE TAKE BUILDING AUTOMATION PERSONALLY MANUAL RCFD-230C...
  • Page 2 Our goal is to make real estates in the world more energy efficient. Regin is an international group and our products sells in over 90 countries. Thanks to our global presence with strong local representation, we are well aware of the requirements of the market, as well as of how our products and systems function under the most variable conditions.

  • Page 3: Table Of Contents

    Table of Contents 1 Introduction ..........................5 2 Control functions .........................6 Control modes ........................6 2.1.1 Four pipe system....................6 2.1.2 Two pipe system....................6 2.1.3 Control mode settings ....................6 Control principles .......................7 2.2.1 Heating and cooling functions .................7 2.2.2 Heating/Cooling function settings ................8 Change-over ........................8 2.3.1 General.........................8...
  • Page 4 Table of Contents Coils Register ........................26 Input Register ........................27 Holding Register .......................27...

  • Page 5: Introduction

    Introduction Introduction RCFD-230C is a 230 V AC electronic fan-coil thermostat for room temperature control. It is suitable for every kind of building where reduced energy consumption and high comfort need to be met. The ability to switch between control modes depending on occupancy, makes it particularly suitable for public spaces, such as hotel rooms, offices, schools, hospitals, etc.

  • Page 6: Control Functions

    Figure 2-1 A two pipe system 2.1.3 Control mode settings Parameter Description Control mode 0 = 2-pipe system 1= 4-pipe system Modbus register Modbus addess Description Holding register Control mode 0 = 2-pipe system 1= 4-pipe system RCFD-230C manual, Rev. A...

  • Page 7: Control Principles

    The cooling function is activated when the room temperature is higher than SP plus a defined calc temperature span (deltaT). The cooling output closes when the calculated setpoint is reached. See Figure 2- Output, cooling deltaT Temp. calc Figure 2-3 Cooling function RCFD-230C manual, Rev. A...

  • Page 8: Heating/Cooling Function Settings

    The heat or cool symbol is shown in the display depending on the current change-over state (heating or cooling). Figure 2-4 Heating symbol in the display at change-over state heating Figure 2-5 Cooling symbol in the display at change-over state cooling RCFD-230C manual, Rev. A...

  • Page 9: Change-Over Detection

    DI1 Normally closed (NC) / Normally open (NO) 0 = NO 1 = NC Sensor connected to AI 0 = No sensor connected (Internal NTC sensor is used) 1 = Room temperature sensor 2 = Change-over temperature sensor RCFD-230C manual, Rev. A...

  • Page 10: Fan Control

    Auto will be lit up when Auto speed is selected and be turned off otherwise. The bars for fan speed will correspond to the current speed set, either Manually or Automatically. RCFD-230C manual, Rev. A...

  • Page 11: Mould Protection

    1 = Fan speed 1 is active Discrete register 0 = Fan speed 2 is not active 1 = Fan speed 2 is active Discrete register 0 = Fan speed 3 is not active 1 = Fan speed 3 is active RCFD-230C manual, Rev. A...

  • Page 12: Actuator Control

    N N o o t t e e ! ! The calculated setpoint is different when the thermostat is in Occupied state compared to Standby state due to different hystereses. See chapter 2.2.1 for more information. RCFD-230C manual, Rev. A...

  • Page 13: Off

    The basic state of the thermostat is Standby state. If there is no external influence it will return to this state. See Figure 2-7 to get a better understanding of how the thermostat moves between the different states. RCFD-230C manual, Rev. A...

  • Page 14: Remote Control

    A presence detector or hotel key card sensor is connected to DI in order to choose between the controller states Occupied and Standby. The controller checks for presence continuously when the controller has been set in the Operating mode (DI) Presence detection. RCFD-230C manual, Rev. A...

  • Page 15: On/Off Delay

    Switch off delay for DI, in minutes Holding register Sensor/detector connected to DI1 0 = No sensor connected 1-2 = Not used 3 = Presence detector 4 = Change-over sensor Coils register DI1 Normally closed (NC) / Normally open (NO) RCFD-230C manual, Rev. A...

  • Page 16: Display Layout

    Arrow up or Arrow down arrow when in Active mode . The display can be set to show two different values in this mode: The calculated setpoint (SP ✓ calc RCFD-230C manual, Rev. A...

  • Page 17: View Mode Settings

    3.3 Buttons Symbol Description Changeover button This is a combination of two segments, the outer arrows and the inner sun/ snowflake. These two segments are controlled individually. Arrow up/Increase button On/Off button Arrow down/Decrease button Fan button RCFD-230C manual, Rev. A...

  • Page 18: Segments

    The man and the house are two separate segments that can be controlled individually. No presence Used in combination with the segment Occupancy. Shows that the controller is in cool mode Shows that the controller is in heat mode RCFD-230C manual, Rev. A...

  • Page 19: Hardware

    Hardware Hardware 4.1 Dimensions cc 60 50,5 4.2 Connection diagram Figure 4-1 4-pipe wiring Figure 4-2 2-pipe wiring RCFD-230C manual, Rev. A...
  • Page 20 Digital input for presence detection, hotel key card etc Temp Analogue input for external PT1000 sensor, change-over Agnd for terminal Temp Serial communication port, Com N Serial communication port, Com A Serial communication port, Com B RCFD-230C manual, Rev. A...

  • Page 21: Appendix A Technical Data

    (AWG 16) Dimensions, external (WxHxD) 95 x 95 x 50.5 mm Weight, incl. packaging 0.24 kg Material, housing and base Polycarbonate, PC Material, fire resistance UL 94 V-0 Colour, housing and base Signal white RAL 9003 RCFD-230C manual, Rev. A...

  • Page 22: Appendix B Parameter List

    3 = Automatic via analogue or digital input Temperature difference between the room tempera- 3 °C ture and the water temperature to switch to heating Temperature difference between the room tempera- 3 °C ture and the water temperature to switch to cooling RCFD-230C manual, Rev. A...
  • Page 23 Delay for the display to dim down and enter Idle mode. If set to 0 the display never dims down. Display setting Idle mode 0 = Show current controller setpoint 1 = Show current room temperature RCFD-230C manual, Rev. A...
  • Page 24 3 = 8N1 Modbus Char timeout 2 ms 1000 Timeout should be at least 1.5 times a character, i.e. at least 2 ms (@9 600 baud) Modbus Answer delay 5 ms 1000 Version number Version dependent RCFD-230C manual, Rev. A...

  • Page 25: Appendix C Modbus Variable List

    1 = Change-over cooling Active if Change-over sensor is configured at terminal DI. Fan speed 1 0 = Fan speed 1 is not active on DO FAN1 1 = Fan speed 1 is active on DO FAN1 RCFD-230C manual, Rev. A...
  • Page 26 1 = Active Not used NC/NO for terminal DI 0 = NO 1 = NC 11-14 Not used NC/NO for terminalHeat 0 = NO 1 = NC NC/NO for terminal Cool 0 = NO 1 = NC RCFD-230C manual, Rev. A...
  • Page 27 30-32 Not used C.6 Holding Register Modbus Description Unit Default Scale adress value value value Basic setpoint (SP °C basic Hysteresis to calculate Heating and Cooling setpoint at Occu- °C pied state RCFD-230C manual, Rev. A...
  • Page 28 4 = Auto. Fan speed follows heat or cool demand according to the application. 35-36 Not used User defined setpoint adjustment (SP ) set by using the °C -200 buttons on the front. Can be reset remotely. 0 = No current setpoint adjustment made RCFD-230C manual, Rev. A...
  • Page 29 (@9 600 baud) Answer delay should be at least 3.5 times a character, i.e. at least 5 ms (@9 600 baud) 0 = 4800 bps 1 = 9600 bps 2 = 19200 bps 3 = 38400 bps RCFD-230C manual, Rev. A...
  • Page 30 HEAD OFFICE AB Regin, Box 116, SE-428 22 Kållered • Visiting address: Bangårdsvägen 35, SE-428 36 Kållered Phone: +46 (0)31 720 02 00 • Fax: +46 (0)31 720 02 50 • info@regincontrols.com • www.regincontrols.com...

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