Kbox SMG - Samsung NASA KNX Gateway
Product Features
Kbox SMG connects Samsung indoor units that speak the NASA protocol to a KNX automation system. The gateway wires into the indoor unit's F3/F4 communication line, drives the unit from KNX and reports its real state back to the bus.
Every NASA indoor unit type is supported: wall mounted, duct, fresh air duct, console and the cassette family. For Samsung's 360 Cassette models the device carries a dedicated CST360 Vane control block — the Spot, Mid, Wide and Swing airflow modes are addressable directly from KNX. This block exists only on Kbox SMG.
The setpoint can be limited to 18–30 °C in cooling and 16–30 °C in heating. Fan runs as 5 levels plus Auto, and the vertical vane offers 5 addressable positions plus Swing.
Integration Notes
- NASA is mandatory: the device only works with indoor units that speak NASA. Older NON-NASA Samsung units are not supported — verify your indoor unit model in the compatibility finder before you specify the project.
- Thermistor source: the "Selection of Thermistor" parameter decides which sensor the ambient temperature is read from. A KNX room thermostat is usually more representative of the room than the indoor unit's suction sensor; in that case feed the temperature from the bus.
- Logic units: 10 "Additional Function" blocks run inside the device, each capable of 7 logic, 4 arithmetic, 6 comparison and 3 type-conversion operations. You do not need a separate KNX logic module for window contact, occupancy or sleep scenarios.
Documents & Downloads
Box Contents
- Kbox-SMG KNX gateway
- Wago KNX Terminal Block
Technical Specifications
| Device | Kbox SMG - Samsung NASA KNX Gateway |
|---|---|
| AC brand | Samsung |
| Protocol | NASA |
| Connection port | F3/F4 |
| Compatible indoor units | Wall Mounted, Duct Type, Fresh Air Duct Type, 360 Cassette, 1 Way Cassette, 2 Way Cassette, 4 Way Cassette, Console |
| ETS application version | 1.0.8 |
| KNX certificate no. | 574/22153/25 (KNX v3.0.4) |
| Power supply | KNX bus (EIB) |
| Power consumption | 10 mA |
| Inputs | 3 dry contact inputs |
| Button / LED | 1 × KNX programming button · 1 × KNX programming LED |
| Operating mode | S-Mode |
| Protection class | IP20 |
| Working temperature | -10 °C … +70 °C |
| Storage temperature | -25 °C … +90 °C |
| Max. humidity | < 90 % RH |
| Dimensions | 44.5 × 19.8 × 44.5 mm |
| Configuration | ETS 5 / ETS 6 |
ETS Parameters
The device connects to the Samsung indoor unit through the F3/F4 port. The parameters below are configured in ETS.
| Operating modes | Cool / Heat / Dry / Fan Only / Auto |
|---|---|
| Fan speed | 5 levels + Auto |
| Up-Down Wing | 5 addressable positions + Swing |
| Left-Right Wing | Yes |
| Cooling setpoint range | 18 – 30 °C |
| Heating setpoint range | 16 – 30 °C |
| Ambient temperature source | From the KNX bus (From Bus) |
| Selection of Thermistor | Yes |
| Logic and arithmetic units | 10 functions, each with 7 logic, 4 arithmetic, 6 comparison and 3 type-conversion operations |
| Scene function | Yes |
| Window / occupancy / sleep contact | Yes |
KNX Group Objects
The device exposes 81 group objects. Object names are given exactly as they appear in the ETS database.
| Object | Function | Type | Flags |
|---|---|---|---|
| General | |||
| On/Off | 1: On / 0: Off | 1 bit | CWU |
| On/Off Feedback | 1: On / 0: Off | 1 bit | CRT |
| Alive Status | Alive notification | 1 bit | CRT |
| Remote Controller Lock | 1: Enabled / 0: Disabled | 1 bit | CRWU |
| Object Control Lock | 1: Enabled / 0: Disabled | 1 bit | CRWU |
| Error Status | ASCII error code | 14 bytes | CRT |
| Error Alarm | 1: On / 0: Off | 1 byte | CRT |
| Mode | |||
| Mode | Cool / Heat / Dry (Dehumidification) / Fan (Fan Only) / Auto | 1 byte | CWU |
| Mode Feedback | Cool / Heat / Dry (Dehumidification) / Fan (Fan Only) / Auto | 1 byte | CRT |
| Mode +/- | 1: Increase / 0: Decrease | 1 bit | CWU |
| Heat/Cool Mode Set | 1: Heat / 0: Cool | 1 bit | CWU |
| Cool Mode Set | 1: Enable / 0: Disable | 1 bit | CWU |
| Heat Mode Set | 1: Enable / 0: Disable | 1 bit | CWU |
| Dry (Dehumidification) Mode Set | 1: Enable / 0: Disable | 1 bit | CWU |
| Fan (Fan Only) Mode Set | 1: Enable / 0: Disable | 1 bit | CWU |
| Auto Mode Set | 1: Enable / 0: Disable | 1 bit | CWU |
| Cool Mode Feedback | 1: Enable / 0: Disable | 1 bit | CRT |
| Heat Mode Feedback | 1: Enable / 0: Disable | 1 bit | CRT |
| Dry (Dehumidification) Mode Feedback | 1: Enable / 0: Disable | 1 bit | CRT |
| Fan (Fan Only) Mode Feedback | 1: Enable / 0: Disable | 1 bit | CRT |
| Auto Mode Feedback | 1: Enable / 0: Disable | 1 bit | CRT |
| Temperature | |||
| Set Point Temperature | Temperature (°C) | 2 bytes | CWU |
| Set Point Temperature Feedback | Temperature (°C) | 2 bytes | CRT |
| Set Point Temperature +/- | 1: Increase / 0: Decrease | 1 bit | CWU |
| Ambient Temperature | Temperature (°C), min 8 / max 39 | 2 bytes | CWU |
| Ambient Temperature Feedback | Temperature (°C) | 2 bytes | CRT |
| Fan | |||
| Fan Level Set | Percentage (Scaling) | 1 byte | CWU |
| Fan Level Feedback | Percentage (Scaling) | 1 byte | CRT |
| Fan Level Set | 0…5 (Enumerated) | 1 byte | CWU |
| Fan Level Feedback | 0…5 (Enumerated) | 1 byte | CRT |
| Fan Level +/- Set | 1: Increase / 0: Decrease | 1 bit | CWU |
| Fan Auto Level | 1: Enable / 0: Disable | 1 bit | CWU |
| Fan Auto Level Feedback | 1: Enable / 0: Disable | 1 bit | CRT |
| Fan Level-1 Set | 1: Enable / 0: Disable | 1 bit | CWU |
| Fan Level-2 Set | 1: Enable / 0: Disable | 1 bit | CWU |
| Fan Level-3 Set | 1: Enable / 0: Disable | 1 bit | CWU |
| Fan Level-4 Set | 1: Enable / 0: Disable | 1 bit | CWU |
| Fan Level-5 Set | 1: Enable / 0: Disable | 1 bit | CWU |
| Fan Level-1 Feedback | 1: Enable / 0: Disable | 1 bit | CRT |
| Fan Level-2 Feedback | 1: Enable / 0: Disable | 1 bit | CRT |
| Fan Level-3 Feedback | 1: Enable / 0: Disable | 1 bit | CRT |
| Fan Level-4 Feedback | 1: Enable / 0: Disable | 1 bit | CRT |
| Fan Level-5 Feedback | 1: Enable / 0: Disable | 1 bit | CRT |
| Up-Down Wing | |||
| Up-Down Position Swing Set | 1: Enabled / 0: Disabled | 1 bit | CWU |
| Up-Down Position Swing Feedback | 1: Enabled / 0: Disabled | 1 bit | CRT |
| Up-Down Wing Set | Percentage (Scaling) | 1 byte | CWU |
| Up-Down Wing Feedback | Percentage (Scaling) | 1 byte | CRT |
| Up-Down Wing Set | 1…5 (Enumerated) | 1 byte | CWU |
| Up-Down Wing Feedback | 1…5 (Enumerated) | 1 byte | CRT |
| Up-Down Wing +/- Set | 1: Increase / 0: Decrease | 1 bit | CWU |
| Up-Down Wing Position 1 Set | 1: Set Position 1 / 0: NA | 1 bit | CWU |
| Up-Down Wing Position 2 Set | 1: Set Position 2 / 0: NA | 1 bit | CWU |
| Up-Down Wing Position 3 Set | 1: Set Position 3 / 0: NA | 1 bit | CWU |
| Up-Down Wing Position 4 Set | 1: Set Position 4 / 0: NA | 1 bit | CWU |
| Up-Down Wing Position 5 Set | 1: Set Position 5 / 0: NA | 1 bit | CWU |
| Up-Down Wing Position 1 Feedback | 1: Active / 0: Inactive | 1 bit | CRT |
| Up-Down Wing Position 2 Feedback | 1: Active / 0: Inactive | 1 bit | CRT |
| Up-Down Wing Position 3 Feedback | 1: Active / 0: Inactive | 1 bit | CRT |
| Up-Down Wing Position 4 Feedback | 1: Active / 0: Inactive | 1 bit | CRT |
| Up-Down Wing Position 5 Feedback | 1: Active / 0: Inactive | 1 bit | CRT |
| Left-Right Wing | |||
| Left-Right Position Swing Set | 1: Enabled / 0: Disabled | 1 bit | CWU |
| Left-Right Position Swing Feedback | 1: Enabled / 0: Disabled | 1 bit | CRT |
| CST360 Vane | |||
| CST360 Vane Mode | 1…4 | 1 byte | CWU |
| CST360 Vane Mode Feedback | 1…4 | 1 byte | CRT |
| CST360 Vane Mode +/- Set | 1: Increase / 0: Decrease | 1 bit | CWU |
| CST360 Vane Spot Set | 1: Enabled / 0: NA | 1 bit | CWU |
| CST360 Vane Spot Feedback | 1: Enabled / 0: Disabled | 1 bit | CRT |
| CST360 Vane Mid Set | 1: Enabled / 0: NA | 1 bit | CWU |
| CST360 Vane Mid Feedback | 1: Enabled / 0: Disabled | 1 bit | CRT |
| CST360 Vane Wide Set | 1: Enabled / 0: NA | 1 bit | CWU |
| CST360 Vane Wide Feedback | 1: Enabled / 0: Disabled | 1 bit | CRT |
| CST360 Vane Swing Set | 1: Enabled / 0: NA | 1 bit | CWU |
| CST360 Vane Swing Feedback | 1: Enabled / 0: Disabled | 1 bit | CRT |
| Energy Saving | |||
| Window Contact | 1: Enable / 0: Disable | 1 bit | CWU |
| Window Contact Feedback | 1: Enable / 0: Disable | 1 bit | CRT |
| Occupancy Contact | 1: Enable / 0: Disable | 1 bit | CWU |
| Occupancy Contact Feedback | 1: Enable / 0: Disable | 1 bit | CRT |
| Sleep Contact | 1: Enable / 0: Disable | 1 bit | CWU |
| Digital Inputs | |||
| Digital Input 1 | 1: Active / 0: Passive | 1 bit | CWU |
| Digital Input 2 | 1: Active / 0: Passive | 1 bit | CWU |
| Digital Input 3 | 1: Active / 0: Passive | 1 bit | CWU |
Flags: C = Communication, R = Read, W = Write, T = Transmit, U = Update.