Product Description:

The 131F0724 variable frequency drive is manufactured by Danfoss as a member of the VLT FC 102 HVAC Drives series. It is intended for ventilation and pumping systems where closed-loop speed regulation can reduce energy consumption while maintaining the required airflow or pressure. Typical applications include supply fans, exhaust fans, circulation pumps, and other motor-driven equipment in commercial buildings. The drive adjusts motor speed in response to control signals, allowing connected equipment to operate according to changing system demand instead of remaining at full speed.

This model operates with a supply voltage of 380–480 VAC and accepts three-phase power, allowing direct connection to common industrial power networks. It supplies a continuous mechanical motor output of 1.1 kW, which corresponds to 1.5 HP and suits small fans or pumps. The IP21 / Type 1 enclosure protects internal components against contact with fingers and vertically falling water droplets. This protection permits installation in suitable indoor electrical rooms while allowing the airflow needed for cooling. The housing is compatible with dry-room frame sizes B through E. An uncoated printed circuit board is used for indoor environments that do not expose the electronics to heavy moisture or corrosive contaminants. The drive does not include a brake chopper, so applications requiring dynamic braking must use an appropriate external arrangement. Option positions A, B, C0, C1, and D are unpopulated, leaving the unit in its standard configuration without additional expansion modules.

Field wiring reaches the control terminals through standard cable entries, providing organized routing for power and signal conductors. A built-in RFI filter limits conducted electrical interference on the supply side and helps prevent drive switching noise from affecting nearby equipment. Local operation is provided through the graphical local control panel, which displays operating values and provides direct access to drive parameters without requiring a separate computer. Its graphical interface supports adjustments to motor control, setpoints, alarms, and operating status from the front of the unit. The series identifier is 102, placing this model within the VLT HVAC Drive platform intended for fan and pump control. The standard configuration provides the core control and filtering functions without adding communication, feedback, or auxiliary option cards.