Product Description:

The 131F3317 is an AC variable frequency drive produced by Danfoss for the VLT FC 102 HVAC Drives series. It converts fixed-frequency utility power into a controllable output for adjusting the speed of centrifugal fans, pumps, and compressors in building automation systems. By modulating the motor frequency, the drive helps maintain airflow, pressure, and other process setpoints while reducing energy consumption in heating, ventilation, and air conditioning equipment. Its variable-speed operation also reduces the need for mechanical throttling devices, such as dampers or control valves, when regulating system output.

The unit delivers 75 kW (100 HP) of continuous electrical power, allowing it to operate large air-handling equipment and other substantial HVAC loads. It accepts a supply of 380–480 VAC with three-phase power, permitting direct connection to common industrial distribution systems within the supported voltage range. The IP55 / Type 12 enclosure protects the internal electronics against dust and water jets, making the drive suitable for demanding indoor installations. Its backplate arrangement supports A5, B, and C frame mounting at the rear of a cabinet, which helps reduce the depth occupied by the installed equipment. An integrated radio-frequency interference filter limits conducted electrical emissions that could otherwise affect nearby devices. The drive has no brake chopper, so applications that generate significant regenerative energy must use an appropriate external braking method.

The standard configuration includes a graphical local control panel for entering parameters, reviewing operating values, and accessing drive diagnostics. Its interface uses the Standard Language Pack to provide commonly used menu text for local operation. Conductors pass through standard cable entries, allowing conventional power, motor, and control wiring to enter the enclosure without specialized entry hardware. The drive uses uncoated printed circuit boards, so protection against airborne dust and moisture is provided primarily by the sealed enclosure rather than a conformal coating. No additional A, B, C0, C1, or D option cards are installed in this configuration. The standard arrangement provides the essential motor-control, filtering, local-interface, and enclosure features required for typical fan, pump, compressor, and air-handling applications.