SQM50.261R1A Siemens Damper Motor

Overview

The Siemens SQM50.261R1A is a high-precision reversing rotary actuator designed for the accurate positioning of air and gas dampers, flow control valves, and butterfly valves in industrial and commercial combustion systems. Part of the robust SQM5 series, this electromotive actuator is engineered for applications requiring a high degree of modulating accuracy and repeatability. It features a reversible synchronous motor and a modular design that allows for the integration of various electronic circuit boards and potentiometers to meet specific control requirements.

Features

• Reversible synchronous motor that can be disengaged from the gear train for manual adjustment
• Internal and external position indication for easy monitoring of the shaft angle
• Integrated auto/manual switch and manual forward/reverse toggle switch for simplified commissioning and troubleshooting
• Adjustable switching cams with scales for precise setting of limit and auxiliary switches
• Modular design supports field-exchangeable circuit boards for various control signals
• Durable die-cast aluminum housing with impact-proof plastic covers for long service life
• Maintenance-free gearwheels and bearings

Specifications

• Model: SQM50.261R1A
• Operating Voltage: 110V to 120V AC (50/60 Hz)
• Torque: 90 in-lbs (10 Nm)
• Running Time: 8 seconds for 90 degree rotation (at 60 Hz)
• Direction of Rotation: Counterclockwise (CCW)
• Shaft Type: 10 mm diameter round single-ended shaft
• Control Type: Position proportional
• Protection Rating: NEMA 4 (when suitable cable glands are used)
• Agency Approvals: UL listed and CSA certified

Applications

• Positioning of air and gas dampers in medium to large capacity oil and gas burners
• Control of flow control valves and butterfly valves in combustion processes
• Load-dependent control of fuel and air ratios in industrial heating systems
• HVAC applications requiring precise rotary motion and high torque performance