Product Overview

The Siemens 6SE6440-2UD25-5CA1 is a versatile, high-performance frequency inverter from the globally recognized MICROMASTER 440 family. Engineered for the precise speed regulation of three-phase induction motors, this drive excels in applications where dynamic load changes and high torque accuracy are essential. This specific unfiltered model is designed for 380V to 480V networks, providing a dual-power rating that allows it to serve both constant torque and variable torque machinery. By implementing advanced vector control algorithms, the 6SE6440-2UD25-5CA1 ensures superior motor performance and energy efficiency across a wide range of industrial automation sectors.

Performance Data and Hardware Configuration

The technical architecture of this drive is optimized for reliability and high-stress industrial environments:

• Power Capacity: Dual-rated for 5.5 kW (High Overload) and 7.5 kW (Low Overload) applications.

• Input Voltage Stage: Compatible with 3-phase AC 380V to 480V (±10%) at 47-63 Hz line frequency.

• Transient Overload Handling: Capable of 150% output current for 60 seconds (High Overload) to manage heavy startup cycles.

• Control Frequency: Pulse frequency of 4 kHz with an output frequency range reaching up to 650 Hz (V/f mode).

• Thermal Endurance: Operational temperature range of -10°C up to +50°C with integrated advanced thermal management.

• Housing and Protection: Frame Size C (FSC) unit with an IP20 rating, measuring 245 x 185 x 195 mm for compact cabinet integration.

• Dynamic Braking: Built-in chopper for connection to external braking resistors, facilitating rapid deceleration.

• Interface Options: Shipped without a keypad; compatible with Basic Operator Panels (BOP), Advanced Operator Panels (AOP), or PC-based commissioning via PROFIBUS/DeviceNet modules.

Industrial Implementation Scenarios

The MICROMASTER 440 is the preferred solution for a vast array of motion control tasks requiring deterministic performance: