Siemens MICROMASTER 440 Modules – 6SE6440-2AD22-2BA1

Technical Dossier

Product Details And Specifications

Siemens MICROMASTER 440 Series Technical Notes

The Siemens MICROMASTER 440 (MM440) is a universal-purpose variable frequency drive (VFD) series engineered for demanding speed and torque control applications across global heavy industry. Deployed extensively in chemical processing plants, petroleum refineries, nuclear auxiliary systems, pulp and paper mills, and water treatment infrastructure, the MM440 series occupies a foundational position in industrial automation inventories worldwide. Its vector control architecture, integrated PID controller, and wide power range (0.12 kW to 250 kW) made it the reference platform for three-phase AC motor control throughout the 2000s and 2010s. The 6SE6440-2AD22-2BA1 specifically is a 2.2 kW, 3-phase 380–480 V unit in the compact A-frame enclosure, widely used in pump, fan, and conveyor applications.

The Evolution of MICROMASTER 440 Architecture

The MICROMASTER product line originated with the MM3 series in the early 1990s, establishing Siemens' presence in the general-purpose VFD market. The MM420 followed as a simplified scalar-control variant, while the MM440 was introduced as the full-featured flagship with closed-loop vector control (both sensorless and encoder-based), dynamic braking capability, and a modular operator panel interface (BOP/AOP). The MM440 communicates via USS protocol natively, with optional PROFIBUS-DP, DeviceNet, CANopen, and Modbus RTU adapters enabling integration into virtually any DCS or PLC architecture of its era.

Compatibility considerations are significant for maintenance engineers: MM440 units use the SDP (Status Display Panel), BOP (Basic Operator Panel), and AOP (Advanced Operator Panel) interchangeably across the series. Parameter sets are transferable via BOP or PC tools (STARTER, DriveMonitor). The series was officially transitioned to the SINAMICS G120 platform from approximately 2010 onward, though MM440 units remain in active service across installed bases globally. Spare parts and replacement units are now sourced exclusively through specialist distributors.

MICROMASTER 440 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly stocked models across the MM440 power and voltage range. Units are classified by frame size, input voltage, and output power rating.

6SE6440-2AB11-2AA1: 0.12 kW, 1-phase 200–240 V, frame size A, general-purpose compact drive
6SE6440-2AB12-5AA1: 0.25 kW, 1-phase 200–240 V, frame size A, low-power conveyor and pump duty
6SE6440-2AB15-5AA1: 0.55 kW, 1-phase 200–240 V, frame size A, single-phase input fan control
6SE6440-2AB17-5AA1: 0.75 kW, 1-phase 200–240 V, frame size A, light-duty variable speed control
6SE6440-2AD21-5AA1: 1.5 kW, 3-phase 380–480 V, frame size A, standard industrial pump drive
6SE6440-2AD22-2BA1: 2.2 kW, 3-phase 380–480 V, frame size A, vector-control conveyor and fan drive
6SE6440-2UD23-0BA1: 3.0 kW, 3-phase 380–480 V, frame size B, sensorless vector control
6SE6440-2UD24-0BA1: 4.0 kW, 3-phase 380–480 V, frame size B, closed-loop torque control
6SE6440-2UD25-5BA1: 5.5 kW, 3-phase 380–480 V, frame size B, heavy-duty pump and compressor
6SE6440-2UD27-5BA1: 7.5 kW, 3-phase 380–480 V, frame size B, high-cycle industrial fan duty
6SE6440-2UD31-1CA1: 11 kW, 3-phase 380–480 V, frame size C, process line motor control
6SE6440-2UD31-5CA1: 15 kW, 3-phase 380–480 V, frame size C, refinery auxiliary drive
6SE6440-2UD32-2CA1: 22 kW, 3-phase 380–480 V, frame size C, large pump and blower control
6SE6440-2UD33-0DA1: 30 kW, 3-phase 380–480 V, frame size D, heavy industrial conveyor
6SE6440-2UD34-5DA1: 45 kW, 3-phase 380–480 V, frame size D, high-power process drive
6SE6440-2UD37-5EA1: 75 kW, 3-phase 380–480 V, frame size E, large-scale industrial application
6SE6440-2UD38-8FA1: 90 kW, 3-phase 380–480 V, frame size F, heavy-duty plant-wide motor control