21.F4.C0K-3420 by KEB

The 21.F4.C0K-3420 frequency inverter from KEB is an integral part of the F4 Combivert Frequency Inverters series designed for precise motor control in industrial settings. Key features include the robust mains voltage range of 305...500 V and a reliable protection rating of IP35 ensuring safe operation in harsh environments. In addition, the inverter delivers a stable voltage output of 400V and utilizes PWM technology to achieve stepless speed regulation of three-phase AC motors, making it ideal for processes that demand energy efficiency and consistent performance.

Detailed technical specifications underline its capability with a rated current of 90A and an operating frequency of 4 kHz. The unit boasts an impressive power output of 45 kW paired with a capacity of 62.0 kVA, allowing it to deliver substantial performance for demanding applications. Its mains frequency of 65 / 60 Hz and the provision of 18 phases contribute to its versatility in various electrical environments. Moreover, a tightening torque for terminals of 2.5 Nm ensures secure connections while the design maintains the efficiency of the DC-voltage link, making it a high-performance device for industrial automation.

Beyond its core technical merits, the inverter provides an extensive array of programmable I/O options including two programmable transistor outputs, one relay output, and six programmable digital inputs. Complementary features such as two analog outputs, two differential voltage inputs, and two voltage outputs for auxiliary equipment further enhance its adaptability. The inclusion of a non adjustable digital input supports fixed control tasks, making integration into existing systems straightforward. Overall, the design and robust specifications yield a frequency inverter that strengthens system reliability, ensures precision control, optimizes energy consumption, and ultimately extends the operational life of connected machinery.