Product Description:

The 131B5483 is a variable frequency drive manufactured by Danfoss within the VLT FC 102 HVAC Drives series. Designed for automated ventilation and pumping equipment, the unit converts fixed mains power into a regulated output that follows changing process demand. It controls squirrel-cage motors in air-handling systems, booster pumps, cooling equipment, and other building services where variable-speed operation can reduce energy consumption. The drive can also respond to control signals from a building management system, allowing motor speed to track airflow, pressure, or temperature requirements without continuous operation at full output.

The input stage accepts a 380–480 VAC supply and operates from a three-phase power source, allowing connection to common industrial distribution systems. Continuous motor output is rated at 1.1 kW, which corresponds to 1.5 HP. This output capacity is suitable for relatively small fans and pumps used in commercial HVAC installations. The IP55 / Type 12 enclosure protects the internal electronics against dust and water jets, supporting wall or panel mounting in plant rooms. Standard cable entries provided through Adaptation A simplify the routing and termination of power, motor, and control wiring. The drive does not contain a brake chopper, so applications that require rapid deceleration must account for regenerative energy through the connected system. Its baseline configuration omits additional mains and hardware options that are not needed for standard fan or pump control.

Electromagnetic emissions are limited by an integral RFI Class A1/B (C1) filter, reducing the need for separate suppression components in compatible commercial installations. Local operation is provided through a graphical local control panel that displays operating values, presents menus, and supports manual speed commands. The interface allows users to review drive status and adjust available parameters directly at the enclosure. The control board uses an uncoated PCB, so the drive should be installed away from corrosive vapors, conductive dust, and persistent condensation. A standard language pack provides multilingual menu access for supported operating screens. Routine care should focus on keeping ventilation paths clear, checking terminal security while power is safely isolated, and maintaining installation conditions suitable for the uncoated electronics.