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Destratification controller | dual AC fan outputs 3 A | built-in Wi-Fi

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Article code TA-D-020001
Current stock 3 U.
Factory lead time 5 Week(s)

Solution description

Temperatures at the ceiling and floor level are measured by two temperature sensors with stainless steel probes 85 mm. The higher the difference between both temperatures, the higher the AC fan speed. The combined maximum speed per output is 3 A. There are two regulated outputs available. This destratification controller has a built-in Wi-Fi gateway. The enclosure has an IP54 protection degree against ingress of dust and moisture.

Additional specifications and description

Destratification to distribute the heat evenly
Warm air rises.  In rooms with high ceilings, a layer of air builds up in layers with different temperatures. When warm air lingers just below the ceiling and the cold air is mainly at the bottom of the room, this creates an uncomfortable feeling. It also results in high heating costs, especially in the case of less well insulated buildings.
Destratification is the process of mixing these layers of air with different temperatures. Near the ceiling, the warm air accumulates. Closer to the floor are the colder layers of air. This causes an uncomfortable feeling for the residents and on top of that, a lot of heat is lost through the roof. Destratification fans or ceiling fans can solve this by mixing the layers of air with different temperatures. By mixing the air, the temperature under the ceiling and at the floor level is balanced. This creates a more pleasant feeling and requires less heating. In addition to significant energy savings, a better indoor air climate is created. Ceiling fan speed is regulated based on the difference between ceiling and floor temperatures. The higher the difference between both temperatures, the higher the fan speed. The delta temperature, minimum and maximum fan speed and all other settings can be adjusted via the Modbus holding registers. Typically, this solution is applied in large halls such as warehouses or manufacturing plants. 

SenteraWeb HVAC cloud platform
The built-in internet gateway can connect the controller to SenteraWeb via the local Wi-Fi network. SenteraWeb is the HVAC cloud platform that offers remote control via a standard web browser. Connected devices can sent alarm messages when the measured temperatures exceed their ranges or when errors occur. Floor and ceiling temperatures can be logged and visualized in a diagram. Logged data can be exported. One or multiple users can have access to the connected device(s). Users can only see the values, configurators can see and adjust values of the Modbus Holding registers. Via the day-week scheduler, different ventilation regimes can be created.

Infinitely variable control for ceiling fans
This fan speed controller regulates the speed of ceiling fans by reducing the motor voltage. The voltage is reduced via phase angle control (TRIAC technology). This speed controller is therefore only suitable for voltage controllable motors. If you are not sure whether your motor is voltage controllable, it is best to contact the motor manufacturer. This speed controller works completely silently. The fan speed can be controlled with the knob on the front panel. Depending on the motor type, a humming motor noise may occur at low speed.

Modbus RTU communication
All devices exchange information via Modbus RTU communication. Digital temperature sensors are more accurate than passive temperature sensors. With passive temperature sensors, the measured value is influenced by the electrical resistance of the cable. This is not the case with digital sensors. Digital temperature sensors send the measured values via Modbus RTU communication. Modbus communication is more stable and reliable than a 0-10 Volt signal and it offers the possibility to use longer cables. All information from the connected devices is available, not just the measured values. If a problem occurs in one of the sensors, a detailed alarm notification can be sent.

Components of this solution

Article code


1 U.

This is a temperature sensor for air ducts. The supply voltage is 24 VDC. The stainless steel probe has a length of 85 mm. The measured temperature is transmitted via Modbus RTU. Both power supply and Modbus RTU can be connected via an RJ45 connector.


1 U.

This is a temperature sensor for air ducts. The supply voltage is 24 VDC. The stainless steel probe has a length of 85 mm. The measured temperature is transmitted via Modbus RTU. Both power supply and Modbus RTU can be connected via an RJ45 connector.


2 U.

Tool to mount DTS series digital temperature sensors on a surface or on a wall. DTS sensors are often used to measure air temperature in ducts. This mounting bracket makes it possible to measure ambient temperature with a DTS temperature sensor.


1 U.

Terminal block to RJ45 adapter for Modbus RTU networks. The terminal block is connected to 3 RJ45 sockets. This adapter distributes 24 Volt supply voltage and Modbus RTU communication. It helps to minimise branches in the Modbus RTU network lines. It is useful to add Sentera products with terminal block to a Modbus RTU network using RJ45 connectors. It simplifies wiring and guarantees reliable contacts.


1 U.

Elevate your HVAC system to unparalleled heights with the TCMF8-302WF, an advanced controller engineered for precision fan speed control in systems with single-phase AC fans. With a maximum motor current of 3 A per motor output (2 x 3 A), this controller guarantees optimal efficiency for your HVAC setup. The TCMF8-302WF sets a new standard in automation by dynamically regulating fan speed, leveraging real-time measurements from up to 4 connected HVAC sensors through the RJ45 socket, supporting Power over Modbus. Additional sensors can be seamlessly integrated via extra power supplies. Experience unmatched flexibility with 2 analog inputs, 2 analog outputs, and 2 tacho inputs, offering a toolkit for customization tailored to your specific HVAC needs. Accessing application-specific firmware is effortless through SenteraWeb, your dedicated HVAC cloud platform. The TCMF8-302WF includes an integrated internet Wi-Fi gateway, ensuring a smooth connection to SenteraWeb. Opt for standalone operation or maintain continuous connectivity to the cloud platform, granting you the freedom to control and monitor your HVAC system according to your preferences. Immerse yourself in a realm of possibilities with the TCMF8-302WF's diverse functionalities. Sentera empowers you with a thoughtfully selection of firmwares, addressing various HVAC applications such as destratification, demand-based fan speed control, Air Handling Unit control, etc. Simplify the configuration process by choosing your desired functionality on our website's solution page and effortlessly downloading the corresponding firmware from SenteraWeb. No programming skills are required for this user-friendly controller. Fine-tune settings, if necessary, through Modbus Holding registers. The TCMF8-302WF ensures precision control accessibility and hassle-free operation. Elevate your HVAC experience – choose the TCMF8-302WF for a seamless, efficient, and customizable fan speed control solution.

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