FC-102P4K 131F0727 Danfoss
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The Danfoss FC-102P4K 131F0727 is part of the VLT FC 102 HVAC Drives series and has a rated horsepower of 5 hp with a nominal voltage of 460 VAC. This drive comes with a NEMA 1 enclosure, supports three input phases, and features 2 analog and 6 digital inputs. Its continuous input current is 9.9 A, continuous output current is 8.2 A, and the maximum ambient temperature is 50°C.
Internal Product Review
The FC-102P4K 131F0727 is a Danfoss VLT HVAC drive rated at 5 hp with 460 VAC operation. A NEMA 1 enclosure and fused disconnect support straightforward panel integration and dependable service in HVAC installations. A 100 kA short-circuit rating makes this drive a strong choice for controlled HVAC motor applications.
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Product Description:
The FC-102P4K 131F0727 is an HVAC-oriented variable frequency drive produced by Danfoss for the VLT FC 102 HVAC Drives series. It converts fixed-frequency, three-phase mains power into a modulated output for controlling centrifugal fans, pumps, and compressors. Building automation controllers can adjust equipment speed so that airflow or fluid flow matches real-time demand, reducing unnecessary energy use in large air-handling and chilled-water systems.
The power section accepts a three-phase input at 460 VAC and operates with a network frequency of 60 Hz. Under nominal load, it draws a continuous input current of 9.9 A while delivering 8.2 A to the motor terminals. Conversion losses produce up to 124 W of heat inside the NEMA 1 enclosure, so the surrounding area must allow adequate ventilation. Protection against severe electrical faults is supported by a short-circuit current rating of 100 kA, while a fused disconnect provides upstream isolation. Control wiring includes two analog inputs for pressure or temperature transducers, six digital inputs for start or fire-mode signals, and two relay outputs for sending status information to contactors or alarm panels. The RS-485 interface supports communication speeds up to 115 kbaud for integration with BACnet MS/TP or Modbus networks.
During transient load peaks, the inverter can supply an overload current of 9 A without exceeding its thermal limits, allowing brief increases in output during damper acceleration or similar load changes. The output stage is rated for 5 hp, matching common 4-kilowatt induction motors used in supply fans and other commercial HVAC equipment. Operation is permitted at ambient temperatures up to 50 °C, allowing installation in mechanical rooms without dedicated cooling when airflow around the enclosure remains unobstructed.
