SIEMENS servo motor SQM45.291B9

SIEMENS servo motor SQM45.291B9 SQM45.291B9 is a high-precision actuator specially designed for medium and large burners. It realizes precise control of dampers or fuel valves through CAN bus communication and is widely used in industrial and commercial combustion systems. SQM45.291B9 belongs to Siemens SQM45 series digital servo motors, designed for LMV5 series combustion managers. The core function is to dynamically adjust the air-fuel ratio during combustion to achieve efficient combustion and low emission control. Its design goal is to achieve precise adjustment of 0.1° level resolution through mechatronics, while meeting reliability requirements in industrial environments. Torque and stroke: Rated output torque 3 Nm, holding torque 1.5 Nm, 90° Rotation stroke time 10-120 seconds (can be adjusted via the LMV5 controller), supports clockwise/counterclockwise bidirectional rotation, maximum rotation angle 160°. Protection Class: IP54 (IP40 at cable outlet), can operate stably from -25°C to +60°C, resistant to vibration (IEC 60068-2-6) and electromagnetic interference (EN 61000-6-2). Mechanical design: Aluminum die-cast gear shaft housing is paired with a lifetime lubricated plastic cylindrical gear transmission, equipped with a D-type connecting shaft (10mm diameter) and a 6-pin RAST3.5 connector to ensure long-term reliable operation. Electrical parameters: Powered by CAN bus cable (AC 2×12V), driven by stepper motor, power consumption 9-15 VA, and position feedback (Hall sensor) supports 0.1° resolution. Core functions: combustion process control, safety and protection mechanism, communication and scalability. Multi-fuel adaptation: The gas and fuel mode can be switched through software configuration and is compatible with dual-purpose oil and gas burners. For example, in industrial hot air furnaces, the damper opening and ignition timing can be automatically adjusted according to the fuel type.