Speed Controller LTV-1-010-NA

Potentiometer | OFF position | LED indicator

Control your ventilation with LTV Potentiometer, a straight forward 0-10 V device designed for optimal control of EC fan speed, AC fan speed controllers or valve actuators. This potentiometer empowers you to fine-tune your ventilation system effortlessly, ensuring a comfortable and controlled environment. Operating at a supply voltage of 230 VAC, the LTV potentiometer delivers a variable output signal ranging from 0 to 10 VDC, easily adjustable via its user-friendly rotary knob. This knob features a distinctive off-position, ensuring a seamless transition to zero output in a simple turn. The splash-proof enclosure further enhances its adaptability, allowing for both inset mounting (IP44) and surface mounting (IP54), making it a reliable choice for diverse installation needs.

Experience clarity in control with the integrated green LED indicator, providing a visual cue when the output value surpasses 0 V. The LED comes to life as the rotary knob is turned clockwise, signaling an active state away from the off-position. Conversely, in the off-position, the green LED deactivates, maintaining a clear visual representation of the system’s status.

The purpose of an HVAC potentiometer

A potentiometer serves the purpose of generating a continuously variable signal to control other devices. The control signal is adjusted based on the position of the rotary knob, commonly used for remotely controlling EC fans, damper actuators, AC fan speed controllers or frequency inverters. This allows for decentralized installation, such as placing the potentiometer in an office room while the fan speed controller is situated in a technical room or electrical cabinet.
The LTV-1-010-NA potentiometer is developed to control fans equipped with an EC motor or to be used as an input device for fan speed controllers with 0 –10 VDC inputs.

0-10 VDC control signal

The 0 – 10 VDC control signal is a prevalent method in the HVAC industry for regulating parameters like EC fan speed or valve positions. Representing a range of desired settings, the 0 – 10 VDC signal corresponds to modulation from 0 % to 100 % of the parameter. A 0 V signal signifies the minimum setting, while a 10 V signal denotes the maximum, providing versatile control possibilities.

OFF position

The rotary knob of the LTV-1-010-NA has an OFF position, i.e. when the rotary knob is turned completely 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 go to its low limit level. In case an EC fan is connected to the potentiometer, it will start and accelerate towards low speed.

Green LED operating indicator

The green LED operating indicator lights up when the rotary knob is turned clockwise, i.e. when not in the OFF position. In OFF position the green LED is deactivated.