Product Overview

The 6SE6420-2UD21-1AA1 is a high-efficiency frequency inverter from the Siemens MICROMASTER 420 family, engineered for the precise speed regulation of three-phase induction motors. This 1.1 kW (1.5 HP) drive is a "universal" solution, providing a compact footprint (Frame Size A) without compromising on industrial-grade performance. It operates on a wide three-phase voltage supply of 380V to 480V AC, converting fixed-line frequency into a variable output to optimize motor torque and energy consumption. Designed with a modular philosophy, this unfiltered unit is ideal for integration into decentralized control systems where space-saving DIN rail mounting and high reliability are paramount.

Core Engineering Specs and Drive Profiles

• Power Output: 1.1 kW / 1.5 HP (Constant Torque)

• Input Voltage: 3-Phase 380V to 480V AC (+10% / -10%)

• Rated Current: 3.0 Amperes

• Control Architecture: Linear, quadratic, and multi-point V/f control

• Overload Capability: 150% of rated current for 60 seconds within a 300-second cycle

• Frequency Range: 0 Hz to 650 Hz output

• Integrated Logic: Built-in PID controller for closed-loop process regulation

• I/O Configuration: 3 digital inputs, 1 analog input (0-10V), 1 relay output, and 1 analog output (0-20mA)

• Cooling & Protection: Integrated fan cooling with IP20 protection rating

• Pulse Frequency: 4 kHz (Standard), adjustable up to 16 kHz for silent motor operation

• Environmental Range: Stable operation from -10°C up to +50°C

Strategic Deployment & Process Utilization

• Automated Conveyor Systems: Providing smooth acceleration and deceleration ramps to prevent mechanical wear and ensure stable material transport.

• Fluid Management: Utilizing the integrated PID controller to regulate pumps and fans based on real-time pressure or flow feedback, significantly reducing energy costs.

• Packaging and Bottling: Implementing precise speed matching for auxiliary drives in high-speed production lines.

• Material Processing: Suitable for mixers, agitators, and simple grinding machines where variable torque and high overload start-up capacity are required.

• OEM Panel Building: Its compact Frame Size A dimensions allow engineers to maximize I/O density within confined control cabinets for global machine exports.