Product Description:

The FC-101PK75T4E20H4XXCXXXSXXXXAXBXCXXXXDX is an AC variable frequency drive crafted by Danfoss for the VLT FC 101 HVAC Basic Drives series. It is designed for fan and pump control in heating, ventilation, and air-conditioning systems. The unit varies motor frequency and voltage so building automation systems can adjust airflow or water flow to real-time demand instead of running motors at a fixed speed. Because it is intended for HVAC duty, its control behavior suits systems that need gradual speed changes and steady load regulation during normal operation. This operating method supports smoother process control in air handlers, circulation loops, and similar building service equipment.

This drive accepts a line supply of 380–480 VAC across a three-phase network, allowing direct connection to common industrial mains without transformers. At rated conditions, it delivers 0.75 kW of electrical output, which corresponds to 1.0 HP and suits fractional-horsepower motors often used in branch air-handling equipment and small pumping stations. This power level is commonly matched to compact ventilation motors where precise speed trimming reduces unnecessary energy use during partial-load operation. An integrated EMC filter is certified to RFI class A1 (C2), so cabinet wiring can meet C2 emission limits without external modules, which helps simplify panel layouts where emission control is required. The design omits a brake chopper, so excess regenerative energy must be absorbed by the motor load rather than diverted internally.

The enclosure has an IP20 / chassis rating, so the drive must be mounted inside a closed control panel for touch-safe operation. The circuit boards have a coated PCB finish that helps resist condensation often found in mechanical rooms, which can help preserve reliability where moisture levels change with daily operating cycles. Cable glands use standard cable entries, and field adjustments rely on network commands because the unit has no local control panel, so routine interaction is intended through the connected control system. Mechanical layout remains standard because Adaptation B uses no adaptation, and the unit uses the standard language pack for menu and parameter display. This layout suits installations where the drive remains inside a cabinet and is managed as part of a broader building control network.