Product Description:

The FC-301P11KT4134L2689 is an AC variable frequency drive produced by Danfoss as part of the VLT FC 301 Automation Drives series. This product belongs to the wider VLT AutomationDrive FC group and is installed to regulate the speed of three-phase induction motors in conveyors, fans, and pump stations. By translating a constant utility supply into a variable-voltage, variable-frequency output, the drive gives automation systems precise torque control, reduced energy consumption, and soft-start capability that lessens mechanical stress on connected equipment.

It supplies a continuous shaft power of 11 kW, which corresponds to 15 HP. The rectifier accepts utility power from 380 to 480 VAC and feeds an intermediate DC bus that tolerates up to a 3% phase imbalance without tripping. The inverter stage can generate motor frequencies as high as 590 Hz, with a dedicated flux-control ceiling of 300 Hz to maintain magnetizing current at low speed. These limits allow standard asynchronous machines to operate well above base speed when centrifugal load profiles require an extended range. The thermal design supports one power-up per minute, so the unit can be cycled for maintenance without overstressing power components.

Control interfaces include one analog output, two digital outputs, and a single form-C relay for status or run feedback. The digital channels switch at carrier rates up to 32 kHz, ensuring edge detection by high-speed PLC inputs. Internal power quality is supported by a displacement power factor of greater than 0.98, while the true power factor remains at least 0.9 under rated load, reducing conductor losses in the upstream supply. The drive is engineered for three-phase motors and supports cable runs of 50 m when shielded or 75 m when unshielded, allowing flexible installation in remote motor rooms. Auxiliary terminals provide a 10 V reference that can source 15 mA and a 24 V, 200 mA control rail for transducers and contact inputs.