Siemens MICROMASTER 440 VFD 3.0kW 200-240V 1/3-Phase 6SE6440-2UC23-0CA1

Siemens MICROMASTER 440 VFD 3.0kW – C-Size Vector Drive for Broader Industrial Use

The Siemens MICROMASTER 440, model 6SE6440-2UC23-0CA1, delivers 3.0kW output power with 200-240V 1/3-phase input. This C-size unfiltered drive marks the transition to a larger chassis platform capable of higher current handling and improved thermal management for continuous-duty applications.

As part of the premium MM440 series, this drive implements sensorless vector control technology that maintains consistent torque production even during sudden load fluctuations. This capability is particularly valuable for applications such as material handling conveyors where load conditions vary throughout the production cycle, mixers that encounter inconsistent product consistencies, and extruders requiring stable throughput independent of raw material characteristics.

The integrated braking chopper allows dynamic deceleration when paired with an external resistor. The C-size enclosure (245×185×195mm) provides enhanced heat dissipation compared to B-size models, ensuring reliable operation during extended run times at higher ambient temperatures.

Key Specifications:
- Output Power: 3.0 kW (constant torque)
- Input Voltage: 200-240V AC 1/3-phase, +10/-10%, 47-63Hz
- Rated Output Current: 13.6 A at rated output voltage[reference:24]
- Output Frequency: 0-650 Hz[reference:25]
- Overload Capacity: 150% for 60 s, 200% for 3 s[reference:26]
- Protection Class: IP20[reference:27]
- Operating Temperature: -10°C to +50°C[reference:28]
- Dimensions (H×W×D): 245mm × 185mm × 195mm[reference:29]
- Weight: 5.5 kg[reference:30]
- Filter: Without built-in filter
- Frame Size: C

Typical Applications:
- Medium-capacity conveyor systems with variable load
- Industrial mixers and agitators (batch processes)
- Small extruders for plastics and rubber processing
- Centrifuges requiring controlled acceleration profiles
- Packaging machinery with intermittent high-torque demands
- Small compressors and vacuum pumps

Key Features:
- Sensorless vector control delivers rated torque from standstill without encoder
- Built-in braking chopper for dynamic braking applications
- BiCo technology for flexible I/O signal routing
- Flying restart captures spinning motors without fault conditions
- 2 analog inputs (0-10V / 0-20mA scalable), 2 analog outputs, 6 digital inputs, 3 relay outputs
- Integrated RS-232 and RS-485 Modbus interfaces[reference:31]
- 15 fixed frequencies plus 4 skip frequencies
- Support for multiple control modes: Linear V/f, Quadratic V/f (pump/fan), Sensorless Vector, Flux Current Control
- Multilingual BOP/AOP support for commissioning

Communication Capabilities:
Beyond the standard Modbus RTU interface, the MM440 series supports optional PROFIBUS DP modules (6SE6400-1PB00-0AA0) and DeviceNet modules, making it compatible with most industrial automation networks found in factories worldwide.

Important Notes:
- This product is discontinued (PM410). Available ONLY as a spare part
- A BOP (6SE6400-0BP00-0AA1) or AOP (6SE6400-0AP00-0AA1) is required for parameter changes
- For new installations, SINAMICS G120 series is the recommended successor
- Verify input configuration: single-phase or three-phase depending on your installation
- The unfiltered version requires external EMC filtering for CE compliance in certain environments

FAQ:

Q1: What is the output current rating for this model?
A: The rated output current is 13.6A at rated output voltage of 240V[reference:32]. For constant torque applications, the maximum output is 3.0kW. For variable torque applications (pumps, fans), consult the square-law torque capabilities.

Q2: How does the C-size chassis differ from B-size?
A: The C-size chassis (245×185×195mm) is larger than B-size (202×149×172mm), providing increased current capacity (13.6A vs 10.4A) and improved thermal dissipation for continuous heavy-duty operation. All C-size models share identical mounting dimensions for easy power upgrades.

Q3: Does the drive require an external operator panel to run?
A: No. The drive operates with factory default settings without any panel. However, an operator panel (BOP or AOP) is required to modify parameters, including motor data input and control mode selection.

Q4: What protection circuits are built into this drive?
A: Comprehensive protection includes overvoltage, undervoltage, overload (I²t), short circuit, ground fault, motor stall prevention, motor locked rotor, motor overtemperature (via PTC/KTY84), and inverter overtemperature monitoring.

📦 Spare Part – Limited Stock | Tech Support | Please confirm availability before ordering
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