Variable Frequency Drive | Siemens | 6SE6440-2UD21-5AA1 6SE6 440-2UD21-5AA1 MICROMASTER440 without filter

Product Description: Siemens 6SE6440-2UD21-5AA1

The Siemens 6SE6440-2UD21-5AA1 is a high-performance frequency inverter from the MICROMASTER 440 series, designed for demanding drive applications requiring precise speed and torque control. Rated at 1.5 kW and supporting a 3-phase 380–480 V input, this inverter includes an integrated brake chopper and extensive I/O capabilities. Its vector control technology and flexible programming options make it ideal for dynamic motor control in industrial settings.

Key Features

• Rated output power: 1.5 kW (2 HP)
• 3-phase input voltage: 380–480 V AC
• Vector control for precise torque and speed regulation
• Integrated brake chopper for dynamic braking
• Built-in PID controller and programmable logic functions
• Modular design with optional communication modules
• Multiple control modes: V/f, vector control with/without encoder
• Extensive diagnostics and fault monitoring

Technical Specifications

• Part Number: 6SE6440-2UD21-5AA1
• Input Voltage: 3AC 380–480 V ±10%
• Output Power: 1.5 kW
• Output Current: 4.0 A
• Frequency Range: 0–650 Hz
• Control Modes: V/f, Sensorless Vector, Vector Control with Encoder
• Brake Chopper: Integrated
• Digital Inputs: 6 (configurable)
• Analog Inputs: 2 (voltage or current)
• Relay Outputs: 1
• Communication: Optional PROFIBUS, DeviceNet, CANopen, etc.
• Protection Class: IP20
• Dimensions (W × H × D): Approx. 149 mm × 184 mm × 172 mm
• Weight: Approx. 3.5 kg
• Operating Temperature: –10 °C to +50 °C (without derating)
• Certifications: CE, UL, cULus

Application Areas

• Conveyor systems, pumps, and fans
• Industrial machinery requiring high dynamic response
• Packaging and textile machines
• Process control in chemical and food industries
• OEM equipment with variable speed motor requirements

Advantages

• Precise speed and torque control enhances performance and efficiency
• Integrated braking function allows for rapid deceleration
• Configurable I/Os and control modes support diverse applications
• Modular expandability with communication and encoder modules
• Reliable operation in tough industrial environments