Product Description:

The FC-102P37KT4E21H1XG is an AC variable-frequency drive manufactured by Danfoss for the VLT FC 102 HVAC Drives series. It modulates induction-motor speed in air-handling units, chillers, and pump loops, enabling precise airflow and pressure control in building automation systems. By varying output frequency and voltage, the drive lets connected motors match airflow or water-flow demand instead of running only at full speed. That supports smoother control during occupancy changes and seasonal load shifts in commercial facilities.

The drive supplies a continuous shaft power of 37 kW, equivalent to 50 hp, allowing medium-sized fan arrays to run at design load without derating. It connects directly to utility grids rated 380–480 VAC, and the input section is designed for three-phase power, so no external phase converter is required. Operators program parameters through the front-mounted graphical local control panel, which presents real-time energy and fault data. The interface also makes routine menu navigation easier when viewing motor settings, alarms, and operating values. Environmental protection is rated IP21 / Type 1, meaning the enclosure resists finger contact and falling vertical drips when mounted in a control room. Embedded thermal and current monitoring help maintain stable operation within the unit's electrical range.

Installation in mechanical rooms is supported by a dry-room mounting arrangement suitable for B, C, D, and E frame sizes. For electromagnetic compatibility, the integral filter meets RFI Class A1/B (C1), which helps reduce conducted noise on building feeders and nearby equipment. The drive has no brake chopper, so braking energy must be managed by external hardware when the application requires it. Within the product coding, the series identifier 102 indicates the HVAC drive platform used for this model. This coding is associated with fan and pump control functions commonly used in building systems, where rapid dynamic braking is often unnecessary.