Description

Product Overview

The Siemens 6SE6440-2UD21-5AA1 functions as a high-performance variable frequency drive within the MICROMASTER 440 series. Engineers design this unit specifically for complex drive applications that demand superior motor control. It effectively regulates standard AC induction motors by utilizing advanced vector control or V/f control methods. This converter provides reliable speed regulation across a wide frequency spectrum, making it a dependable choice for industrial automation environments that prioritize precision and operational longevity.

Technical Specifications

• Power Rating: 1.5 kW
• Input Voltage: 380V to 480V AC, three-phase
• Frequency Range: 47 Hz to 63 Hz
• Input Current: 5.9 A
• Output Frequency: 0 Hz to 650 Hz
• Overload Capacity: 150 percent for 60 seconds; 200 percent for 3 seconds
• Frame Size: A
• Dimensions: 173 mm x 73 mm x 149 mm
• Protection Rating: IP20
• Operating Temperature: -10°C to +50°C
• Communication Interfaces: Two analog inputs, six digital inputs, two analog outputs, three relay outputs
• Braking: Integrated chopper for dynamic braking with external resistor support

Functional Capabilities

This frequency converter supports both constant and squared torque characteristics, which allows operators to adapt the drive to various load profiles easily. Because the unit incorporates a robust hardware architecture, it handles demanding start-up sequences and high-inertia loads without compromising stability. Furthermore, users can integrate the device into larger PLC-based control systems through its extensive I/O configuration. While the base unit does not include an operator panel or an internal EMC filter, technicians can easily add these optional components to tailor the drive for specific regulatory or user-interface requirements.

Installation and Integration

Maintenance teams appreciate the flexible mounting options provided by this frame size, as it permits installation on standard DIN rails or via M4 bolts. The design facilitates side-by-side mounting, which conserves valuable cabinet space. Proper thermal management remains essential for long-term reliability; therefore, installers should maintain a clearance of 100 mm above and below the housing to ensure adequate airflow. Once installed, the drive delivers consistent performance for applications ranging from pumps and fans to conveyors and processing machinery.