Product Description:

The FC-051P4K0T4E20H is a compact AC motor drive manufactured by Danfoss for the VLT FC 51 Micro Drives series. As a variable frequency controller, it converts fixed-frequency utility power into a pulse-width-modulated output so motor speed can be adjusted without mechanical throttling. The device suits conveyors, centrifugal pumps, and fan arrays that need reliable torque control in tight panels. Its chassis-mount design and front keypad support local setup in decentralized machine sections and retrofit applications. Because speed is varied electronically, the drive can match motor output to process demand during light or changing loads. It is intended for applications where compact size and straightforward local access are important.

The drive accepts a mains supply of 380–480 VAC and operates from a three-phase input. Continuous output is rated at 4.0 kW, which corresponds to about 5.0 HP. The chassis has an IP20 enclosure, so it is finger-safe but should be installed inside a cabinet to protect it from dust buildup and liquid exposure. Within that electrical range, the unit maintains the internal DC bus used for motor-control pulse generation. These values guide selection of the cabinet layout, protective devices, and airflow needed for normal operation.

The control platform uses code 051, and the menu structure follows the VLT Micro Drive format used across this product line. Optional field expansion modules connect at the control terminals to add network capability without changing the power section. Alarm handling follows the same numbering logic used across the FC 51 range, which keeps status messages consistent when several drive sizes are installed together. That consistency also helps preserve familiar navigation, parameter grouping, and diagnostic behavior across related units. This approach is useful in panels that mix smaller and larger drives but still require similar operating logic.