SF4250 Lenze Variable Frequency Drives (VFD)

Lenze SF4250 is a Variable Speed/Frequency Drive (VSD/VFD) / Inverter designed for precise control of motor speed and frequency. It features dimensions of H248mm x W170mm x D203mm and supports a supply voltage of either 400Vac or 480Vac, with rated currents of 39A at 400Vac and 34A at 460Vac. This device can be mounted in a cabinet or on a DIN rail and operates within an ambient air temperature range of 0 to +50 °C, with a derating of 2.5% per °C above +50°C. It utilizes RS-485 for communication and operates with a network frequency of 48-62 Hz on input and 0-240 Hz on output. The SF4250 includes 2 digital outputs (open-collector outputs; 50mA at 30Vdc) and supports a 3-phase network. It is equipped with 2 analog inputs (1 x 0-10Vdc and 1 x 4-20mA) and 2 analog outputs (both 0-10Vdc or adjustable within a specified range), which are proportional to output frequency or load. The rated active power is 18.5kW, and the rated power is 25HP for supply voltages between 400-480Vac.

About the manufacturer: Lenze is one of the manufacturers that offers Variable Frequency Drives (VFD) that you can order at Powermatic Associates site. Lenze Americas is a global manufacturer of electrical and mechanical drives, motion control, and automation technology, offering a wide range of products, drive solutions, complete automation systems, and engineering services and tools all under one roof.

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