Siemens 6SE6440-2AD22-2BA1 – 2.2kW Three-Phase Variable Frequency Inverter Drive | MICROMASTER 440 Platform
Engineering Background: The MICROMASTER 440 (MM440) series represents Siemens’ flagship general-purpose inverter platform, engineered for demanding industrial motion control applications. The 6SE6440-2AD22-2BA1 is a 2.2 kW (3 HP) three-phase output variant designed for 200–240 V AC supply networks, delivering precise speed and torque regulation across a broad range of motor-driven loads.
Product Positioning: Targeted at procurement engineers and system integrators sourcing a proven, globally supported VFD for pumps, fans, conveyors, compressors, and general machinery. As an authorized distributor, Konmask.com supplies factory-sealed and refurbished-to-spec units with full traceability documentation.
Complete Technical Specifications
- Part Number / SKU: 6SE6440-2AD22-2BA1
- Series / Platform: MICROMASTER 440 (MM440)
- Manufacturer: Siemens AG – Drive Technologies Division
- Country of Origin: Germany
- Rated Output Power: 2.2 kW (3 HP)
- Input Voltage: 3-phase, 200–240 V AC (±10%), 50/60 Hz
- Output Voltage: 3-phase, 0–240 V AC (variable)
- Output Current (rated): 10.4 A
- Output Frequency Range: 0–650 Hz
- Control Method: V/f, Flux Current Control (FCC), Sensorless Vector Control (SVC), Closed-Loop Vector (with encoder)
- Overload Capacity: 150% for 60 s / 200% for 3 s (CT duty)
- Protection Class: IP20 (chassis mount)
- Ambient Temperature: –10°C to +50°C (derate above 40°C)
- Storage Temperature: –40°C to +70°C
- Cooling: Forced air (internal fan)
- Communication: RS-485 (USS protocol); optional PROFIBUS-DP, DeviceNet, CANopen via CB modules
- Digital Inputs: 6 × programmable DI (PNP/NPN selectable)
- Analog Inputs: 2 × AI (0–10 V / 0–20 mA / –10 to +10 V)
- Digital Outputs: 3 × relay outputs (30 V DC / 250 V AC, 2 A)
- Analog Output: 1 × AO (0–20 mA)
- Braking: DC injection braking; compound braking; dynamic braking (external resistor)
- Motor Protection: Electronic thermal overload (I²t), PTC/KTY84 thermistor input
- EMC Filter: Internal Class A filter (external Class B optional)
- Dimensions (H×W×D): 275 × 140 × 195 mm (approx.)
- Weight: 3.28 kg
- Certifications: CE, UL, cUL, C-Tick
- MLFB / Order Number: 6SE6440-2AD22-2BA1
Proven Application Environments
- Centrifugal pumps and HVAC fan drives requiring smooth ramp control
- Conveyor and material handling systems with variable load profiles
- Compressor and blower applications demanding high overload tolerance
- Textile, packaging, and printing machinery with precise speed regulation
- Water treatment and process industry installations
- OEM machine builders integrating Siemens SIMATIC S7 PLC architectures
Engineering Advantages
- Sensorless Vector Control: Delivers ±0.5% speed accuracy without encoder feedback, reducing installation complexity.
- Kinetic Buffering: Maintains drive operation during brief supply interruptions, preventing nuisance trips on critical processes.
- Catch-on-the-fly: Reconnects to a spinning motor without stopping, essential for fan and pump restarts.
- Extensive I/O: 6 DI / 2 AI / 3 relay DO / 1 AO enables complex automation sequences without external PLCs.
- Modular Communication: Field-upgradeable PROFIBUS, DeviceNet, and CANopen option boards for seamless integration into existing plant networks.
- Global Certifications: CE + UL/cUL dual-listed for straightforward export compliance to North American and European markets.
System Architecture & Signal Flow
The 6SE6440-2AD22-2BA1 accepts 3-phase 200–240 V AC at the input rectifier stage, converting to a regulated DC bus. The IGBT inverter stage synthesizes a PWM output voltage (0–240 V, 0–650 Hz) to the motor terminals. Speed setpoint is accepted via analog input (0–10 V / 4–20 mA), digital preset speeds, or serial USS/PROFIBUS command. The integrated PID controller enables closed-loop process control (e.g., pressure or flow) without an external controller. All parameters are accessible via the BOP-2 / AOP operator panel or STARTER / SCOUT commissioning software over RS-485.
Sourcing & Quality Verification
- Origin Traceability: Each unit ships with Siemens factory label intact; serial number verifiable via Siemens Industry Online Support (SIOS).
- Inspection Protocol: Pre-shipment functional test at rated voltage; insulation resistance check; firmware version documented.
- Packaging: Original anti-static foam and carton where available; custom ESD-safe packaging for refurbished units.
- Warranty: 12-month Konmask warranty covering manufacturing defects; DOA replacement within 7 business days.
Procurement Process
- Submit RFQ via konmask.com or email support@konmask.com with quantity and required delivery date.
- Receive formal quotation with lead time, unit price, and shipping options within 24 hours.
- Confirm purchase order; payment via T/T, PayPal, or credit card.
- Dispatch within 1–3 business days; DHL / FedEx express available for urgent requirements.
- Receive shipment with packing list, test report, and invoice for customs clearance.
Technical FAQ
Q: Is the 6SE6440-2AD22-2BA1 compatible with single-phase input?
A: No. This variant requires 3-phase 200–240 V AC input. For single-phase supply, refer to the 6SE6440-2UC series.
Q: Can I add PROFIBUS-DP communication?
A: Yes. Install the CB15 PROFIBUS option board into the drive’s communication slot without hardware modification.
Q: What is the maximum motor cable length?
A: Up to 50 m shielded / 100 m unshielded without output filter; install a Siemens output reactor for longer runs.
Q: Does the drive support Safe Torque Off (STO)?
A: The MM440 series does not natively support STO (SIL2/PLe). For functional safety requirements, consider the SINAMICS G120 series.
Q: What parameter backup options are available?
A: Parameters can be uploaded/downloaded via the AOP operator panel or STARTER software over RS-485/USB adapter.
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