Variable Frequency Drive | Siemens | 6SE6440-2UD21-1AA1 6SE6 440-2UD21-1AA1 MICROMASTER440 without filter

Product Description: Siemens 6SE6440-2UD21-1AA1

The Siemens 6SE6440-2UD21-1AA1 is a variable frequency drive (VFD) from the MICROMASTER 440 series, designed for high-performance motor control in demanding industrial applications. This model is rated for 11 kW motor output and operates on a 3-phase 400 V AC input. It features sensorless vector control, braking chopper as standard, and extended I/O and PID functionality, making it suitable for applications requiring fast acceleration, precise speed regulation, and dynamic braking. It does not include an integrated EMC filter, making it suitable for environments where external filtering is handled at the system level. The drive is housed in a panel-mount IP20 enclosure, suitable for installation inside control cabinets.

Key Features

• Sensorless Vector Control: High dynamic response and precise speed regulation.
• Integrated Braking Chopper: Supports use with external braking resistors.
• PID Controller Built-In: Enables standalone control of pumps, fans, and process variables.
• Programmable I/O: Customizable digital and analog inputs/outputs for flexible integration.
• Flexible Communication: Expandable via optional PROFIBUS, DeviceNet, CANopen, etc.
• Flying Restart and Catch-on-the-Fly: For seamless restart of rotating motors.

Technical Specifications

• Product Type: Variable Frequency Drive (VFD)
• Part Number: 6SE6440-2UD21-1AA1
• Series: MICROMASTER 440
• Rated Output Power: 11 kW (15 HP)
• Input Voltage: 3AC 380–480 V ±10%, 47–63 Hz
• Output Current: 25 A
• Control Modes: V/f, Vector Control, Flux Current Control (FCC)
• Integrated Filter: No (filter must be added externally if needed)
• Braking Chopper: Yes (integrated)
• Protection Class: IP20 (control cabinet installation)
• Cooling: Internal fan cooling
• Digital Inputs: 6 (configurable)
• Analog Inputs/Outputs: 2 AI / 2 AO
• Relay Outputs: 3
• Mounting: Panel-mounted (vertical)
• Operating Temperature: -10°C to +50°C (up to +60°C with derating)
• Dimensions (W × H × D): Approx. 200 × 295 × 195 mm
• Weight: Approx. 9 kg

Application Areas

• Pumps and Fans: PID control for pressure, flow, or temperature regulation.
• Material Handling: Conveyors, hoists, and cranes needing smooth torque control.
• Mixers and Agitators: For high-torque, high-inertia start-up.
• General Automation: Ideal for motors requiring dynamic speed and torque response.

Advantages

• High Performance: Advanced motor control features enable tight process regulation.
• Flexible Configuration: Rich I/O and expansion options adapt to various applications.
• Integrated Safety: Features like quick stop, limit frequency, and fault logging enhance system safety.
• Proven Reliability: MICROMASTER 440 is widely deployed in global industrial environments.
• Energy Efficient: Reduces energy usage through adjustable speed and regenerative braking.