.webp "Potentiometer for stepless EC fan speed control - residential")
.webp "Potentiometer for stepless EC fan speed control - residential front")
.webp "Potentiometer for stepless EC fan speed control - residential right")
.webp "Potentiometer for stepless EC fan speed control - residential inside")
.webp "Potentiometer for stepless EC fan speed control - residential inside under")
EU declaration conformity
HVAC Potentiometer | OFF position | 3-15 VDC supply
Product description
The MTP-D010-AT is a potentiometer for precise ventilation system control. It operates with a supply voltage of 3-15 VDC and controls devices like EC fans, damper actuators, and frequency inverters.
Here are its key features:
Variable Control: A rotary knob provides continuous manual control with an OFF-position to disable the signal.
Customizable Range: The minimum (10-70%) and maximum (30-100%) output levels can be adjusted with internal trimmers.
Durable Design: The splash-proof enclosure supports both inset mounting (IP44) and surface mounting (IP54).
Additional specifications and description
What is the purpose of an HVAC potentiometer?
The control signal (potentiometer output) increases or decreases depending on the rotary knob position. This control signal can directly control EC fans or damper actuators. It can also remotely control AC fan speed controllers (such as Sentera’s EVS or MVS series) or frequency inverters (FI-E series). An illustrative example involves installing the potentiometer in a living room while the fan speed controller is positioned in a technical room or electrical cabinet. This setup enables convenient and effective control of the HVAC equipment.
The control signal (potentiometer output) increases or decreases depending on the rotary knob position. This control signal can directly control EC fans or damper actuators. It can also remotely control AC fan speed controllers (such as Sentera’s EVS or MVS series) or frequency inverters (FI-E series). An illustrative example involves installing the potentiometer in a living room while the fan speed controller is positioned in a technical room or electrical cabinet. This setup enables convenient and effective control of the HVAC equipment.
Why adjust the control signal limits in HVAC systems?
For some applications, it is desirable to adjust the low limit and the high limit of the control signal. This is particularly useful in scenarios where certain EC motors or damper actuators may not be compatible with excessively low control signals. To address this, the low limit of the control signal can be set via a built-in trimmer, allowing for optimal operation without compromising equipment integrity. Conversely, when dealing with overdimensioned fans, adjustments to the high limit of the control signal are necessary. This is done using a maximum trimmer, effectively limiting the maximum fan speed. By incorporating these adjustable limits, the system can be fine-tuned to match specific requirements, ensuring optimal performance and longevity of the HVAC equipment.
For some applications, it is desirable to adjust the low limit and the high limit of the control signal. This is particularly useful in scenarios where certain EC motors or damper actuators may not be compatible with excessively low control signals. To address this, the low limit of the control signal can be set via a built-in trimmer, allowing for optimal operation without compromising equipment integrity. Conversely, when dealing with overdimensioned fans, adjustments to the high limit of the control signal are necessary. This is done using a maximum trimmer, effectively limiting the maximum fan speed. By incorporating these adjustable limits, the system can be fine-tuned to match specific requirements, ensuring optimal performance and longevity of the HVAC equipment.
Note: The minimum and maximum value of the control signal can be adjusted via the trimmers under the front cover. To reach them, remove the knob by turning it to the right until it pops out. Unscrew the loose nut to remove the cover of the external enclosure.
What are the limits of the control signal?
This depends on the MTP-D supply voltage. The supplied voltage must be in the range of 3 - 15 VDC. The minimum value can then be set between 10 and 70 % of the supplied voltage. The maximum value can be set between 30 and 100 % of the supplied voltage. Always ensure that the applied limits in combination with the supplied voltage result in an output signal that complies with the specifications of the connected device. This means that if the supplied voltage is 15 VDC and the high limit is set to 100 %, the connected device must be able to handle a control signal up to 15 VDC.
What does the OFF position do?
This depends on the MTP-D supply voltage. The supplied voltage must be in the range of 3 - 15 VDC. The minimum value can then be set between 10 and 70 % of the supplied voltage. The maximum value can be set between 30 and 100 % of the supplied voltage. Always ensure that the applied limits in combination with the supplied voltage result in an output signal that complies with the specifications of the connected device. This means that if the supplied voltage is 15 VDC and the high limit is set to 100 %, the connected device must be able to handle a control signal up to 15 VDC.
What does the OFF position do?
The rotary knob has an OFF position: when the rotary knob is turned fully counterclockwise, the control signal will be disabled. When the rotary knob is turned clockwise, it clicks out of the OFF position. The control signal will immediately jump to its low limit level. In case an EC fan is connected to the potentiometer, it will start and accelerate towards low speed. The EC fan can never be enabled at a speed lower than the selected minimum speed.
What makes the enclosure reliable?
This potentiometer can be wall-mounted or built-in. Its mounting holes fit perfectly the standard European wall boxes. The enclosure is made of high-quality ASA plastic in nice cream colour (RAL9010). The material is UV resistant and protects against impacts. The protection class is IP44 when built-in and IP54 when wall-mounted. It protects the electronics against ingress of dust, dirt and water in indoor applications.
The enclosure is easy to clean with a damp cloth and mounting it is very easy - all you need is a couple of basic instruments.
What makes the enclosure reliable?
This potentiometer can be wall-mounted or built-in. Its mounting holes fit perfectly the standard European wall boxes. The enclosure is made of high-quality ASA plastic in nice cream colour (RAL9010). The material is UV resistant and protects against impacts. The protection class is IP44 when built-in and IP54 when wall-mounted. It protects the electronics against ingress of dust, dirt and water in indoor applications.
The enclosure is easy to clean with a damp cloth and mounting it is very easy - all you need is a couple of basic instruments.
Remarks, reviews & ratings