.webp "Potentiometer")
.webp "Potentiometer for EC fan")
.webp "Potentiometer for damper actuators")
.webp "HVAC potentiometer")
.webp "Potentiometer Modbus communication")
EU declaration conformity
Residential HVAC Controller | anthracite enclosure
Product description
The RDCV EC Fan Speed Controller is a digital potentiometer and HVAC controller that offers precision in ventilation management with advanced features and a modern design.
User-Friendly Control:
Its intuitive 3-button interface allows for easy fine-tuning of your system in manual mode.
Versatile Analog Output:
This controller can operate EC fans, AC fan speed controllers, frequency inverters, or damper actuators. The output can be continuously variable or divided into 2-10 equal steps with adjustable minimum/maximum values.
Smart Automatic Mode:
When a Sentera HVAC sensor is connected, it switches to automatic mode, enabling the analog output to dynamically respond to ambient temperature, humidity, CO2, air quality (TVOC), or differential pressure. Setpoints and parameters can be easily modified via the 3-button interface or Modbus RTU communication.
Power and Installation Flexibility:
It: operates within a 110 - 230 VAC supply voltage range. Its sleek anthracite enclosure offers both surface and flush mounting options.
The RDCV is an ideal solution for modern ventilation needs, combining a user-friendly interface, smart automatic mode, and flexible installation options.
Additional specifications and description
What are the Differences Between EC and AC Fans, and How Does the RDCV Control EC Fans?
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.
How Does the RDCV Operate in Manual Mode, and What are its Output Settings?
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.
How Does the RDCV Function in Automatic Mode, and What Sensors is it Compatible With?
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.
Which Devices Can the Output Signal Control, and What are the Controller's Usage Modes?
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.
How Does the Controller Utilize 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.
How and Where Can the Controller Be Mounted?
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.
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.
Which Devices Can the Output Signal Control, and What are the Controller's Usage Modes?
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.
How Does the Controller Utilize 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.
How and Where Can the Controller Be Mounted?
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.
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