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.webp "HVAC potentiometer with Modbus communication")
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.webp "Potentiometer Modbus communication")
Potentiometer multiple EC fans | dry contact | Modbus RTU
Product description
The SPV-8-010-MF is a potentiometer with 0-10 Volt output to control multiple EC fans. It has a dry contact to remotely switch on/off an external device.
All parameters (e.g. min/max settings) can be adjusted remotely via Modbus RTU communication. This offers also the possibility to remotely overrule the knob and to temporarily fix the analogue output signal to a specific value. The output type is 0-10 VDC.
It features a universal power supply (85-264 VAC) and a rotary knob for manual control. The contemporary design will undoubtedly complement any interior. The housing is suitable for flush-mounting or surface-mounting.
Additional specifications and description
What does this potentiometer control?
The SPV series are potentiometers that generate a 0-10 Volt signal. This signal can be used to control multiple EC fans. It can be adjusted manually by turning the knob of the potentiometer. Turning the potentiometer knob clockwise will increase the 0-10 Volt signal from low to high (default setting).
This is not just a simple potentiometer. This is a state-of-the-art digital potentiometer! It can work stand-alone or it can be integrated in a Modbus-RTU network. This offers the possibility to set the 0-10 Volt signal manually via the potentiometer or to overrule the manual control via Modbus RTU communication. Via Modbus RTU communication, the output value can be overwritten. Regardless of the position of the knob, the output will be fixed to a certain value. The potentiometer position, the output value and all other parameters can be read via Modbus RTU communication. The complete parameter list is available in the Modbus register map on the product page.
How Can You Control This Potentiometer Remotely?
Via an optional internet gateway, this potentiometer can be connected to SenteraWeb - the online HVAC portal. This makes it possible to remotely read out the output value or even to overwrite this output value. SenteraWeb features a day-week timer. This makes it possible to overwrite the potentiometer output during certain moments in the day or week. There is no need to install apps or software to use SenteraWeb. SenteraWeb is accessible via a standard web browser like Google Chrome or MS Edge.
How can the output range be adjusted?
Some EC motors or valve drives cannot handle control signals that are too small. Sometimes a fan is overdimensioned or too powerful. No worries, the upper and lower limits of this potentiometer's output can be adjusted via Modbus RTU. E.g. the 0-10 Volt output signal can be adjusted to 4-9 Volt or any other customised range.
Can the output be inverted?
By default, this potentiometers output goes from low to high. It is possible to inverse the output of this potentiometer so that it goes from high to low. E.g. by default, the output signal is 0-10 V. This can be adjusted towards 10-0 V.
What is the required powered supply?
Regardless of the region, this potentiometer can be connected directly to the mains voltage. No separate power supply is required! Simply connect the potentiometer to the power distribution network and control your ventilation.
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