Thermokon JOY Fancoil Controllers
RS485 BACnet Interface
Product Overview
The Thermokon JOY Fancoil series offers advanced control for fan coil units, featuring RS485 BACnet MS/TP communication. These controllers are designed for 2- and 4-pipe systems and integrate a 2.5" LCD display with a touch interface for intuitive operation. They support up to 3 time channels, each with 4 time segments, and are designed for installation in standard flush-mounted boxes.
Available models include:
- JOY Fancoil 5DO: For 3-stage fan control, with 2 changeover contacts for heating/cooling. Operates on 85-260V.
- JOY Fancoil EC AO2DO: For EC fan control, with 1 analog output (0-10V) for the fan and 2 changeover contacts for heating/cooling. Operates on 85-260V.
- JOY Fancoil EC 3AO: For EC fan control, with 3 analog outputs (0-10V) for fan, heating, and cooling. Supports 6-way valves. Operates on 24V.
Application
These controllers are ideal for fan coil units in various HVAC applications. The modern design and touch interface provide user-friendly control, while the BACnet communication allows for seamless integration into building management systems.
Technical Specifications
| Feature | JOY Fancoil 5DO | JOY Fancoil EC AO2DO | JOY Fancoil EC 3AO |
|---|---|---|---|
| Network Technology | RS485 BACnet MS/TP, Fail-safe Biasing required | ||
| Temperature Measurement Range | 0..+50 °C | ||
| Temperature Accuracy | ±1 K (typ. at 21 °C) | ||
| Humidity Measurement Range (optional) | 0..100% rH (non-condensing) | ||
| Humidity Accuracy (optional) | ±2% between 10..90% rH (typ. at 21 °C) | ||
| CO2 Measurement Range (optional) | 0..2,000 ppm | ||
| CO2 Accuracy (optional) | (±5% of measured value) + 50 ppm | ||
| Display | 2.5" LCD, 240x160 px., white backlight | ||
| Housing | PC and Glass, optional black or white | ||
| Protection Class | IP30 according to DIN EN 60529 | ||
| Electrical Connection | Screw terminals max. 1.5 mm² (Klemmen 1-8) | Screw terminals max. 1.0 mm² (Klemmen 9-12) | |
| Operating Conditions | 0..+50 °C, max. 85% rH non-condensing | ||
| Weight | 195 g | ||
| Mounting | Flush-mounted in standard flush-mount box (Ø=60 mm) | ||
| Power Supply | 85..260 V ~ | 85..260 V ~ | 24 V = (±10%) or 24 V ~ (±10%) SELV |
| Power Consumption | max. 2.5 VA (260 V ~) | max. 3 VA (260 V ~) | max. 2.5 W (24 V =) |
| Outputs (5DO) | 3x Changeover contacts (Fan stages), 240 V, max. 3 A | ||
| Outputs (EC AO2DO) | 2x Changeover contacts (Heating & Cooling), 240 V, max. 500 mA | ||
| Outputs (EC 3AO) | 3x 0..10 V, max. 5 mA (EC fan, heating/cooling or 6-way valve) | ||
| Inputs (5DO) | DI1: NTC10k or potential-free contact | ||
| Inputs (EC AO2DO) | DI1: NTC10k or potential-free contact | ||
| Inputs (EC 3AO) | DI 1: NTC10k or potential-free contact, DI 2: Digital input (potential-free contact) | ||
Safety Information
CAUTION: Installation and mounting of electrical devices must be performed by authorized personnel only. Unauthorized modifications are prohibited. Do not use the modules for purposes that directly or indirectly serve human, health, or life-saving functions, or where operation could pose a risk to people, animals, or property. Ensure the power supply is disconnected before making any connections.
WARNING: Risk of electric shock! Live parts may be present inside the housing. Touching live parts can cause injury, especially in mains voltage operation (90-265 V).
Further regulations, standards, and the state of the art at the time of installation must be observed.
Installation and Mounting
Room Sensor Mounting
Sensor accuracy is influenced by positioning and mounting. Ensure flush-mounted boxes are sealed. Avoid locations with drafts, heat sources, radiant heat, or direct sunlight. Building material properties can also affect measurements.
Mounting
Hollow wall boxes should be covered by wall material after mounting to conceal the support rim. Consider using white hollow wall boxes (e.g., Kaiser 9063-77).
Software and Configuration
Software: Available at thermokon.de.
MicroSD Card: Used for software updates, upgrades, or configuration. Must be formatted with FAT file system. NTFS and exFAT are not supported.
Bootloader: Integrated for applications and configurations. A blinking ring light indicates an active bootloader.
Firmware Update: Remove the top cover, insert the MicroSD card with the update file, and reassemble. The device will indicate the update process.
Configuration: Use the MicroSD card with the configuration file. The device will configure itself upon startup.
Parameter Adjustment: Display settings, setpoints, and controller parameters can only be modified using the configuration software.
Software Updates: Updates are only possible within the same major version number. For example, 3.0.x can be updated to 3.0.y, but not to 2.x or 4.x.
Configuration Software (uConfig): Requires Windows 10. The software and installer are available for download from the Thermokon website.
Function Description - Controller / Fan Stages
Fan stages are coupled to the controller in automatic mode. The assignment of fan stages to heating/cooling modes is freely selectable. A time span can be parameterized for safe fan startup. Time channels and segments allow for detailed fan control scheduling. User overrides are possible via the device interface. Upon presence detection changes (occupied/unoccupied), the fan returns to automatic mode.
Heating/Cooling with PI Controller (PWM): Proportional and integral components determine the control behavior. The resulting control variable is output as a pulse-width modulated signal.
Heating/Cooling with 2-Point/3-Point Controller: The controller operates with switching hysteresis. The 3-point controller also includes cooling control.
Heating/Cooling with PI Controller (0..10 V): Similar to PWM PI control, but the output is an analog 0-10V signal.
EC Fan Automatic Mode: Fan speed is controlled proportionally to the calculated PI controller output (0-10V).
EC Fan Manual Mode: Fan speed can be set in steps (up to 5 steps) via the configuration software.
CO2 + Humidity Measurement: CO2 measurement range is 0-2000 ppm with 1 ppm resolution. Humidity range is 0-100% with 0.1% resolution. Values can be displayed or read via bus but are not processed internally.
Display Screens
The display can show internal sensor values (temperature, humidity, CO2) and external sensor values. It also indicates operating status like AUTO mode, heating/cooling symbols, and active time channels.
Buttons
Buttons on the touch surface allow for setpoint and fan stage adjustments. The power button ring provides feedback. The power button can also function as a presence sensor.
Navigation: Buttons are used to navigate the parameter menu.
Standby Mode: Disables display and outputs while maintaining frost and heat protection. Modbus registers remain accessible.
Diagnosis Menu
Accessible by marking the header in the parameter menu and pressing ENTER. Provides information like device type, software version, and input/output status.
Parameter Menu - BACnet Interface
Access by pressing the 'up' (A) and 'down' (C) buttons simultaneously for at least 5 seconds. The menu is accessible for 60 minutes after power-on, provided the device is not actively communicating via BACnet. Once a valid DDC request is received, menu access is locked.
BACnet Settings
- Address: Adjustable from 1-127 (Default: 32).
- Baud Rate: Options include 9600, 19200, 38400, 57600, 76800, 115200 Bd (Default: 38400).
Configuration Menu
Time Channels
Up to 3 time channels, each with 4 time segments, can be parameterized. Channel 3 has the highest priority. Settings include day ranges, start times, fan stages, and temperature setpoints.
Time/Date
Allows configuration of time, date, and display format (12h/24h). Includes daylight saving time adjustment.
Sensor Settings
Configuration for internal and external temperature sensors, CO2, and humidity. Includes offset settings for temperature compensation and calibration options for CO2 sensors.
General Settings
Includes settings for LCD and LED brightness, contrast, valve protection, ECO dead zone, fan stages, language, and factory reset.
Inputs
Up to 2 inputs can be configured for various functions:
- Sensor (NTC10K): For external temperature sensors. The controller regulates based on the external sensor's value. Can be used for floor heating protection.
- Change-Over DI: Digital input for switching between heating and cooling modes.
- Change-Over Sensor: Automatically switches between heating and cooling based on configured temperature limits.
- Window Contact / Energy Lock: Activates an energy-saving function. Setpoints for frost protection or heat protection become active.
- Dew Point Contact: Locks the cooling controller.
- Presence: Displays a presence symbol. In the 'unoccupied' state, heating setpoints are reduced, and cooling setpoints are increased.
- Keycard Switch: When no card is inserted, the device enters power-saving mode. Buttons are locked, display is off, and the controller regulates to 'unoccupied' setpoints.
- Alarm Contact: An alarm symbol can be displayed in the header. The background lighting flashes when an alarm is active. The alarm symbol overrides the ECO symbol.
Connection Plan
Wiring diagrams are provided for JOY Fancoil 5DO, EC AO2DO, and EC 3AO models, illustrating connections for fan stages, heating/cooling outputs, digital inputs, and power supply.
Dimensions (MM)
Detailed dimensions of the device are provided.
Optional Accessories
Available accessories include surface-mount frames (white and black), decorative frames (white and black), a 2GB MicroSD card, an RS485 Biasing Adapter, and a USB interface for RS485 (including driver CD).
