HTKNXSMS001 - Samsung Nasa KNX Gateway
The HTKNXSMS001 is a high-efficiency KNX gateway specifically developed to integrate Samsung Nasa air conditioning systems into a KNX network for advanced building automation applications. Thanks to its direct and bidirectional communication capability, it provides seamless and precise management of air conditioning systems from central control systems.
Compact Design, Extensive Function Set
The device stands out with its compact design, both physically and functionally. Three freely configurable analog/digital inputs allow integration with various field devices such as window contacts, temperature, or humidity sensors, enabling the system to respond to environmental factors. This allows for the implementation of automation scenarios without the need for additional hardware costs.
Automatic Updates and Smart Addressing via the KNX Bus
Firmware updates can be performed via the KNX bus, keeping the device up-to-date without removing it from the site. Its automatic addressing feature, based on the serial number, significantly shortens commissioning time in large projects with hundreds of points and ensures an error-free installation.
Powerful Scenario and Recovery Functions
The system's behavior during power outages can be defined in three different modes: requesting the last state from the AC unit, resending the values stored in memory, or activating a specific scenario (1-4). This feature ensures the continuity of climate control in critical buildings and reduces maintenance costs.
HVAC Mode and Fan Speed Control
The device controls HVAC modes (heating, cooling, ventilation) and fan speeds with 1-byte or 1-bit objects. The fan speed can be set by percentage or numerical values, and advanced functions such as cyclical switching, inclusion in auto mode, and stopping are also supported. Status feedback is transmitted to KNX in both numerical and text formats, ensuring readable displays on visualization panels and in BMS software.
Mathematical Logic Module – The Heart of Smart Automation
The most notable feature of the HTKNXSMS001 is its 16 independent mathematical logic units, which can make intelligent decisions even under complex conditions by performing real-time logical and arithmetic calculations. It eliminates the need for external control devices, acting as a "shadow PLC" beyond the KNX bus.
Example scenarios:
Humidity + window sensor: If the ambient humidity is above 80% and the window is open, automatically turn off the air conditioner.
Indoor-outdoor temperature difference: If the difference exceeds 7°C, switch to cooling mode; if it is lower, switch back to ventilation mode.
Evening hours + motion sensor: If motion is detected after 8:00 PM, set the fan to auto mode.
Analog input comparison: If Input1 > Input2, decrease the set temperature by 1°C.
Outdoor temperature automation: When the outdoor air temperature, measured by an analog sensor, drops below 18°C, switch to heating; activate cooling when it is above 24°C.
Daylight-dependent automation: Real-time daylight levels can be measured using an LDR (light sensor) connected via the analog inputs. When combined with the mathematical logic module, advanced comfort and energy management scenarios can be implemented, such as automatically setting the AC to 23 °C when the "light < 50 lux and time > 7:00 PM" condition is met. This not only enhances user comfort but also saves on operating costs.
This module is capable of addition, subtraction, multiplication, division, threshold control, comparison, logical AND/OR conditions, and working with constants. It enables the rapid implementation of complex, building-specific scenarios.
Setpoint Temperature and Ambient Data Management
You can adjust the temperature step-by-step and set lower/upper limits using setpoint control objects. The ambient temperature is transmitted to KNX on change, periodically, or on request. This ensures that current values are always displayed on various functional panels and mobile applications.
Vertical Vane Control – The Airflow is in Your Hands
Vertical vane positions offer options for numerical control with a 1-byte object or step-by-step control with +/-. The swing mode can be optionally included in the cycle. Feedback is sent to KNX in text format, creating directly readable text labels on user interfaces and BMS.
Error Tracking and Detailed Diagnostics
It transmits error messages via 1-bit, 2-byte, or text objects, enabling detailed diagnostics in central management software. This minimizes fault detection and intervention times, reducing the risk of operational interruption. The device includes a comprehensive 14-byte error code object compliant with industry standards, and these codes are automatically transmitted in the same format used in Samsung's original service documents. For example, an "E101" communication error is reported exactly as defined in the service manuals, allowing the source of the fault to be clearly identified when the user reports the code over the phone, thus minimizing intervention time.
Input Controls and Sensor Integration
The device performs Switch–Toggle–Dim functions through a single input with 1-bit and 1-byte objects: a short press sends on/off, a long press sends toggle commands, and holding down sends dimming up/down commands. Additionally, in Shutter/Blind mode, it supports "Up / Down / Toggle" movements with the same button, and step durations can be easily configured via ETS. The analog inputs can be equipped with an LDR (light sensor) for real-time daylight measurement. An NTC-based temperature sensor accurately measures ambient temperature and transmits it via "on change" or "periodic" KNX telegrams, ensuring full integration of the HVAC system.
Scene Module – Customizable Scene Triggering
The Scene Module allows for sending up to eight different actions sequentially or simultaneously to the KNX bus, based on the received scene number. For each action, the delay time, object type (from 1 bit to 4 bytes), and the value to be sent can be defined in detail. Users can save their own scenes on-site with the "scene learning" feature and instantly restore default settings with a "reset" object. This allows for both the quick deployment of standard lighting and climate scenes and the creation of dynamically customizable scenarios tailored to the project owner's or end-user's needs.
Timer Module – Time-Based Operation and Conditioning
The Timer Module provides counter-based time management in your KNX system, with counters allowing unit selection from 100 ms to hours. When the set limit is reached or fallen below, it sends different telegrams to initiate automatic actions. The counter can be reset with a "start" and "stop" command, can remember its last value upon power restoration, or can be automatically reset for a clean count at every start. With condition-based enabling/disabling via a "Gate" object and separate actions triggered when the limit is exceeded or fallen below, it meets all your time-sensitive automation needs, from lighting and blinds to heating and ventilation.
BMS Integration and Remote Monitoring
The HTKNXSMS001 easily integrates with BMS interfaces via BACnet/IP, Modbus, or ETS. You can access system parameters, generate reports, and be instantly notified of critical events via email or SNMP notifications through remote monitoring and management solutions.
ETS for Easy and Fast Setup
All parameters are configured through clearly categorized pages in the ETS software. The General, Modes, Fan, Temperature, Vertical Vane, and Math modules, with their color-coded interface and detailed help texts, minimize installation time.
Indispensable for Professional Projects
The HTKNXSMS001 offers flexibility, reliability, and scalability for both small office applications and large commercial buildings. With its advanced logic processing capacity and smart communication mechanisms, it helps KNX professionals easily implement even the most complex scenarios.
