Potentiometers with minimum and maximum limit, working from low to high speed or vice versa, with 0-10 volts, 0-20 mA or PWM output, infinitely adjustable or with adjustable steps (…) were already part of our assortment. Today we have expanded our potentiometer family with the SDP-M010 series that are equipped with Modbus RTU. As a result, not only are the settings available via the Modbus registers, but from SenteraWeb or your Building Management System you can also read the position of the potentiometer and even overwrite the output.
We mainly know a potentiometer as a device with which we can directly control the speed of an EC fan via a rotary knob or the speed of an AC fan via a speed controller. This unit, which in itself is a very simple device and is built into almost every ventilation application, had limited possibilities until we developed this version with Modbus.
Apart from demand-based ventilation, where sensors or a network of sensors determine how much ventilation is needed, manually controlled ventilation remains also very popular. A choice should be made between a very simple manual control with a potentiometer, or a fully automatic control based on sensors, where manual intervention is difficult, usually even impossible. However, thanks to the development of this Modbus RTU potentiometer, numerous new combinations and possibilities are available.
Whether it concerns small installations where one potentiometer controls one fan or valve, or a large installation with several rooms where also sensors are used, this new potentiometer can prove its worth. Use your creativity to create new solutions. These are some ideas:
Applications where you will manually control fans but where, thanks to the presence of Modbus RTU, you can take control of the potentiometer. Think of automatic switch-off outside working hours or during holiday periods, or free cooling during summer nights. You can take control via SenteraWeb but also via any building management system that is Modbus RTU compatible.
Applications where we will combine demand-based ventilation with manual control. Think of meeting rooms or classrooms where, for example, it becomes possible to additionally “clean” the room during breaks. After the measured value of the sensor has fallen back below the desired value, the automatic control - based on the measurements of the sensor – will take over again. So efficient ventilation without unnecessary energy loss.
Sentera's Modbus RTU potentiometers offer many additional options. They can all be set via the Modbus registers:
Direction of rotation from minimum to maximum or from maximum to minimum
Adjustable minimum and maximum output value
Output signal type selectable from 0-10 VDC, 0-20 mA, 0-100% PWM
The SDP-M010-BT has no zero position and thus will not have an output lower than the minimum value set via Modbus
The SDP-M010-DC has a dry contact output when completely turned anticlockwise that allows external equipment to be turned on or off
The advantages of a potentiometer with Modbus RTUPotentiometers with minimum and maximum limit, working from low to high speed or vice versa, with 0-10 volts, 0-20 mA or PWM output, infinitely adjustable or with adjustable steps (…) were already part of our assortment. Today we have expanded our potentiometer family with the SDP-M010 series that are equipped with Modbus RTU. As a result, not only are the settings available via the Modbus registers, but from SenteraWeb or your Building Management System you can also read the position of the potentiometer and even overwrite the output.>>>
Sentera VAV ventilation systemFor the open house at one of our customers, we built a VAV demo unit in which various Sentera product groups are incorporated to work together as one solution. To explain the complete operation of this installation step by step, we have made a detailed video which you can watch on our Youtube channel. Check out the full article for more information.>>>
Fan speed control made easy!Sentera has a wide range of products and solutions to control fans and monitor indoor air quality. Our product range has a modular structure, which offers enormous advantages. Sentera products are easy to install and they can work stand-alone. If the need changes, additional components can be added afterwards. The connected devices exchange information and work seamlessly together.>>>
Potentiometers requiring a low supply voltageWith the ErP-directives becoming more and more important, there will be a shift from AC-motors towards EC-motors which are much more energy efficient.
We are therefore constantly developing new products and revising existing products to be able to control these EC-motors as accurately as possible.
Sentera provides innovative, easy-to-use control solutions for HVAC installations and ventilation systems. How to optimise your comfort, indoor air quality, safety and overall wellbeing? We have the answer!