EU declaration conformity
Residential HVAC controller | white enclosure
The RDCV EC Fan Speed Controller is our cutting-edge digital potentiometer and HVAC controller designed for precision in ventilation control. Encased in a sleek white housing with a contemporary style, this controller offers versatile functionality to meet your ventilation needs.
In manual mode, effortlessly fine-tune your system using the intuitive 3-button interface. The analogue output is a powerhouse, capable of controlling EC fans, AC fan speed controllers, frequency inverters, or damper actuators. Choose between a continuous variable output or segment it into 2-10 equal steps, with adjustable minimum and maximum values to tailor performance to your requirements.
For a seamless automated experience, connect a Sentera HVAC sensor to activate automatic mode. Now, the analogue output responds dynamically to ambient temperature, relative humidity, CO2 concentration, air quality (TVOC concentration) or differential pressure. Modify setpoints and parameters easily through the 3-button interface or Modbus RTU communication.
This advanced controller operates within a supply voltage range of 110 - 230 VAC, providing flexibility for various applications. The enclosure offers both surface and inset mounting options, ensuring compatibility with diverse ventilation setups.
Experience precision, efficiency, and adaptability with the RDCV EC Fan Speed Controller. Elevate your ventilation system's performance with a controller that puts you in control, offering a seamless blend of manual adjustments and automated intelligence.
Additional specifications and description
EC fans and AC fans are very different. EC fans offer numerous advantages – from being cheaper to operate through reduced humming and buzzing to enhanced yield and more precise control. The difference between an EC fan and an AC fan is that the EC fan is a digital fan. EC stands for ‘electronically commutated, which basically means there is a printed circuit board inside the fan to control it.
The RDCV is intended for EC fan speed regulation. An EC fan can be controlled using different signals (0-10 VDC / 0-20 mA / PWM), however, in the majority of cases, it is controlled with a 0 – 10 V signal into the fan, which is the default setting of the RDCV.
Manual fan speed control
In manual mode, RDCV is a digital potentiometer with an analogue output. The default output type is 0-10 V. A different output type can be selected via Modbus RTU communication: 0-10 VDC, 0-20 mA or 0-100% PWM. This analogue output signal can be adjusted to be continuously variable or in 2-10 steps. The output can be manually adjusted via the up and down arrows. By pressing the select button with the green check mark for 4 seconds, the potentiometer can be activated or deactivated. The selected output value is visualised via the 7-segment LED display (% or step number). Manual or automatic mode can be selected via the 3-button keyboard interface.
In automatic mode, RDCV is an HVAC controller. In this operating mode, RDCV needs to be connected to a Sentera HVAC sensor. In automatic mode, the output value is controlled automatically in function of the measured value. The requested value (setpoint) can be adjusted via the 3-button keyboard interface. Different types of Sentera HVAC sensors can be connected to RDCV. The analogue output can be controlled in function of temperature, humidity, CO2, air quality (TVOC) or differential pressure. Consult the product mounting instructions for more details.
Demand based or manual control
The output signal can directly control an EC fan or an AC fan speed controller. It can also control a damper actuator. So, this device can be used for both manual or on-demand fan speed control.
If you opt for manual control, you can use the keyboard interface. For the more advanced automatic or on-demand option, control is based on the readings of a connected sensor, whose output controls the ventilation.
Modbus RTU communication
The controller features Modbus RTU communication. As standard, Sentera devices with Modbus RTU on board can be set up using the free 3SModbus software. Modbus RTU holding registers duplicate the functions selected via the keyboard interface. If you choose to make use of this functionality, you will have access to the complete set of features offered by the RDCV using your computer.
Flush or surface mounting
The enclosure of the controller allows both surface and flush mounting. When it is built-in a wall, its protection against the ingress of dirt and dust is IP44. For surface mounting, the protection degree is IP54.
The RDCV can be installed on and in all kinds of walls – solid, gypsum board or wooden panels. If you opt for inset installation, the mounting holes fit perfectly the standard European wall boxes used for flush mounting.