Product Description:

The 131N0193 is an AC variable frequency drive supplied by Danfoss in the VLT FC 101 HVAC Basic Drives series. It converts fixed-frequency mains power into a variable-frequency output, allowing facility controllers to adjust induction motor speed according to real-time airflow or water-flow demand. This capability supports efficient operation in ventilation systems, chillers, pumps, and other motor-driven equipment used in commercial and industrial facilities. Matching motor speed to the load can reduce electrical consumption and limit unnecessary mechanical wear compared with continuous fixed-speed operation.

The inverter delivers 15 kW of continuous shaft power, which is equivalent to 20 HP and suits midrange air-moving and pumping equipment. It operates from a 380–480 VAC supply using three-phase power, allowing connection to common building and industrial feeders. This input range is compatible with IEC 400 V utility systems commonly used for HVAC machinery. The balanced three-line input supports efficient power conversion without requiring a neutral conductor for the motor power circuit. The enclosure provides IP54 protection without a Type 12 rating, preventing harmful dust accumulation and protecting internal components against splashing water. This enclosure allows the drive to be installed on mechanical skids or in mechanical rooms where airborne particles and incidental moisture may be present.

Motor conductors pass through standard cable entries, and the pre-machined gland plates associated with Adaptation A simplify cable routing into the enclosure. The drive includes no brake chopper, so applications that require controlled dissipation of regenerated energy must use a suitable external arrangement. An integrated RFI filter reduces conducted electrical interference that could otherwise affect nearby equipment or the incoming power network. Operator interaction is handled by an alphanumeric local control panel, which displays operating codes, parameter values, status information, and set points without a graphical interface. The printed circuit boards are not coated, so the drive should be installed in a noncondensing location that does not expose the electronics to corrosive moisture or airborne contaminants. Its standard control configuration operates without auxiliary option modules, keeping the field wiring focused on the mains supply, motor connections, and required control signals.