6SE6440-2UD37-5FA1

The Siemens MICROMASTER 440 frequency converter, designated as the 6SE6440-2UD37-5FA1, is tailored for reliable motor control in demanding environments. Capable of handling rated power up to 75 kW, this drive operates efficiently with a 3-phase AC input voltage between 380 and 480 volts, with a tolerance of ±10 %.

The unit operates within an input frequency range of 47 to 63 Hz and can deliver output frequencies from 0 to 500 Hz, supporting diverse applications that require high levels of control precision. It features a constant torque control mode and boasts a commendable overload capacity, able to sustain operations at 150% for a duration of 60 seconds, which is sufficient for handling transient conditions. The torque characteristics are designed according to a square-law principle, rated at 90 kW, ensuring effective performance across various loading scenarios.

With an ambient temperature operating range of -10°C to +50°C, the converter maintains functionality in a wide range of conditions. The physical dimensions measure 850 mm in height, 350 mm in width, and 320 mm in depth, making it compact despite its powerful capabilities. It has an IP20 protection rating, indicating its suitability for environments where direct exposure to water or dust is minimal.

For power supply, it runs on 3-phase 380-480 V AC. The converter can be started in either direct or soft start methods, providing flexibility in operation. Integral protection features include safeguards against overvoltage, undervoltage, overload, short-circuit conditions, and motor protection, enhancing the reliability of the device. Notably, this frequency converter does not come with an AOP or BOP display, maintaining a straightforward design that focuses on performance.