Description

The Siemens 6SE6420-2UD21-1AA1 belongs to the reliable MICROMASTER 420 inverter family. This frequency converter manages the speed of three-phase AC motors with high precision. It operates within a voltage range of 380V to 480V AC. Consequently, the drive provides an output power of 1.1 kW or 1.5 HP. This model features an unfiltered design to allow for custom external filtering configurations. Therefore, it suits various industrial electrical environments effectively.

The drive utilizes a sophisticated V/f control law to maintain motor performance. It supports an output frequency reaching up to 650 Hz. Furthermore, the integrated PID controller enables automated process adjustments without extra hardware. This functionality streamlines operations for pumps, fans, and conveyor systems.

Technical Parameters and System Data

Overload Capacity and Installation Flexibility

Engineering teams often select this drive for its impressive 150% overload capability. The unit handles peak currents for 60 seconds within every five-minute cycle. This protection ensures stability during high-torque startups or sudden load changes. Additionally, the compact Frame Size A housing minimizes the required space in control cabinets. Users can choose between standard DIN rail mounting or traditional screw-on installation.

The modular design supports several optional communication modules and operator panels. Although the base unit lacks a display, users can easily snap on a Basic Operator Panel (BOP). This flexibility allows for cost-effective scaling across large factory installations. Moreover, the robust internal circuitry operates reliably in temperatures up to 50°C.

Industrial Applications and Integration

• Precision speed regulation for centrifugal pumps and industrial fans.
• Automated material handling and variable speed conveyor belts.
• Integration into PLC-controlled production lines via digital I/O.
• Packaging machinery requiring frequent start-stop cycles.
• Textile manufacturing equipment and small-scale machine tools.