IntesisBox® FJ-RC-KNX-1i
KNX Interface for Fujitsu General Limited Air Conditioners
Introduction
The IntesisBox® FJ-RC-KNX-1i is designed to provide a complete and natural integration of Fujitsu General Limited air conditioners with KNX control systems. It offers simple installation, allowing it to be fitted inside the air conditioner's indoor unit. The device connects directly to the AC unit's BWR bus on one side and to the KNX TP-1 (EIB) bus on the other.
This interface provides great flexibility for KNX projects, with configuration managed directly through ETS (Engineering Tool Software). The device's database includes a comprehensive set of communication objects, enabling simple, quick, and advanced integration, including monitoring and control of all AC unit parameters, as well as specific functions like saving and executing scenes.
It features four configurable binary inputs for potential-free contacts, which can be used to integrate various external devices for functions such as switching, dimming, or shutter/blind control. The IntesisBox® FJ-RC-KNX-1i also supports the use of a KNX temperature sensor for air conditioning control, offering a cost-effective solution for full air conditioning integration within KNX projects.
KNX Interface Details
Communication Objects
The ETS database for the IntesisBox® FJ-RC-KNX-1i provides multiple communication objects for flexible integration:
- 20: Control_On/Off [DPT_1.001 - 1bit]: 0-Off, 1-On
- 21: Control_Mode [DPT_20.105 - 1byte]: 0-Aut, 1-Hea, 3-Coo, 9-Fan, 14-Dry
- 22: Control_Vanes U-D / 4 Pos [DPT_5.010 - 1byte]: Position values 1, 2, 3, 4
- 24: Control_Setpoint Temperature [DPT_9.001 - 2byte]: (°C)
- 28: Control_Reset Error [DPT_1.015 - 1bit]: 1-Reset error
- 53: Status_On/Off [DPT_1.001 - 1bit]: 0-Off, 1-On
- 54: Status_Mode [DPT_20.105 - 1byte]: 0-Aut, 1-Hea, 3-Coo, 9-Fan, 14-Dry
- 68: Status_Vanes U-D / 4 Pos [DPT_5.010 - 1byte]: Position values 1, 2, 3, 4
- 75: Status_AC_Setpoint_Temp [DPT_9.001 - 2byte]: (°C)
- 76: Status_AC_Reference_Temp [DPT_9.001 - 2byte]: (°C)
- 77: Status_Only_Centrally_Ctrl [DPT 1.002 - 1bit]: 1-Only centrally controlled
- 79: Status_Error/Alarm [DPT_1.005 - 1bit]: 0-No alarm, 1-Alarm
- 81: Status_Error_Text_Code [DPT_16.001 - 14byte]: 3-char FJ Error; Empty-None
Parameters
Multiple parameters can be configured via ETS to ensure maximum integration flexibility, enhancing both device functionality and the integrator's workflow. These include settings for mode, special modes, fan speed, vane control, temperature, scenes, and timeouts, as well as configuration for the four binary inputs.
Connection
The FJ-RC-KNX-1i can be used with or without a FUJITSU wired Remote Controller. The KNX connection is made via the device's KNX connector to the KNX TP-1 (EIB) network.
Connection with FUJITSU Wired Remote Controller
Diagram Description: An AC Indoor Unit is shown connected to the IntesisBox FJ-RC-KNX-1i via its internal electronic control board (using GND, Data, Power pins). The IntesisBox is then connected to the KNX TP-1 (EIB) bus. A separate Remote Control unit is also depicted, connected to the IntesisBox. The maximum connection distance for the signal cable is 500 meters.
Connection without FUJITSU Wired Remote Controller
Diagram Description: An AC Indoor Unit is shown connected to the IntesisBox FJ-RC-KNX-1i via its internal electronic control board (using GND, Data, Power pins). The IntesisBox is then connected to the KNX TP-1 (EIB) bus. The four binary inputs are also shown on the IntesisBox. The maximum connection distance for the signal cable is 500 meters.
Compatible Fujitsu General Limited AC Indoor Units
A list of compatible Fujitsu General Limited indoor unit model references and their available features can be found via the following links:
- Fujitsu: http://www.intesis.com/pdf/IntesisBox_FJ-RC-xxx-1_AC_Compatibility.pdf
- General: http://www.intesis.com/pdf/IntesisBox_GE-RC-xxx-1_AC_Compatibility.pdf
- Fuji Electric: http://www.intesis.com/pdf/IntesisBox_FE-RC-xxx-1_AC_Compatibility.pdf
- Hiyasu: http://www.intesis.com/pdf/IntesisBox_HY-RC-xxx-1_AC_Compatibility.pdf
Technical Specifications
Diagram Description: The device is a compact, square-shaped unit with dimensions 70x70x28mm. It features a KNX bus connection port, a programming LED, and a programming button on its front or top panel. A connection for the AC Indoor Unit BWR bus is also present. Four binary input ports are clearly labeled.
| Feature | Specification |
|---|---|
| Envelope Material | ABS (UL 94 HB), 2.5 mm thickness |
| Dimensions | 70 x 70 x 28 mm |
| Weight | 70g |
| Colour | Ivory white |
| Power Supply | 29V DC, 7mA (Supplied through KNX bus) |
| AC Indoor Unit Bus | Voltage: 13-18V, Current: 80mA |
| LED Indicators | 1 x KNX programming |
| Push Buttons | 1 x KNX programming |
| Binary Inputs | 4 x Potential-free binary inputs. Signal cable length: 5m unshielded, extendable up to 20m with twisted pair. Compliant with IEC61000-4-2 (15kV air, 8kV contact discharge) and MIL STD 883E-Method 3015-7 (class3B). |
| Configuration | Configuration with ETS. |
| Operating Temperature | From -25°C to 85°C |
| Storage Temperature | From -40°C to 45°C |
| Isolation Voltage | 2500V |
| RoHS Conformity | Compliant with RoHS directive (2002/95/CE). |
| CE Conformity | Conforms to EMC directive (2004/108/EC) and Low-voltage directive (2006/95/EC). |
| Certifications |
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