VLT6005HT4C54STR3DLF00A00C0 by Danfoss

The VLT6005HT4C54STR3DLF00A00C0 is a variable frequency drive produced by Danfoss for the VLT 6000 HVAC Drives series. This three-phase inverter modulates induction motor speed in ventilation, pumping, and chiller circuits used in building automation. By adjusting output frequency, it allows the control system to match airflow or water flow to real-time demand, which can reduce energy use and mechanical stress when compared with fixed-speed starters. Its design and power structure are aligned with the temperature-controlled duty cycles common in commercial and industrial air-handling installations.

Its input supply range of 380-460 VAC allows the drive to connect directly to common low-voltage distribution panels without an autotransformer. The motor-side rating of 3.0 kW / 4.0 HP indicates the maximum continuous shaft power it can regulate while maintaining the programmed torque curve. Protection against dust and splashing liquids is provided by the compact IP 54 housing, which can eliminate the need for a separate cabinet in mechanical rooms. For conducted emission control, an integral Class A1 and Class B filter limits high-frequency noise on the mains. Local setup and manual override are handled through the detachable LCP, which provides parameter access and plain-text status messages.

The base platform is supplied as a standard unit, so the hardware slotting, I/O count, and cooling fan set stay in the factory configuration. Because there is no coating on the printed circuit boards, the installation site should be free from corrosive fumes or heavy condensation. Both the fieldbus and application expansion categories come with no options, so network protocols must be added externally if needed. The drive is preprogrammed for the HVAC load profile, allowing fan or pump sequences to be activated after motor autotune without custom macros.