SQM50.480A1 Siemens Damper Motor

Overview

The Siemens SQM50.480A1 is a high-precision reversing damper motor designed for the positioning of flow control valves, butterfly valves, and air or gas dampers. This electromotive actuator is engineered for industrial burner applications, providing reliable rotary motion for load-dependent control of combustion air and fuel volumes. It features a robust design with a synchronous motor that ensures constant speed and accurate positioning, making it ideal for systems requiring high modulating accuracy and repeatability.

Features

• Reversing electromotive actuator with a synchronous motor for precise speed control
• Equipped with eight auxiliary switches, including two limit switches, for extensive control integration
• Features a self-centering shaft adapter for fast and secure installation without slippage
• Housing sections are constructed from die-cast aluminum with impact-proof and heat-resistant plastic covers
• Disengagement clutches allow for separate manual adjustment of the drive shaft and cam shaft
• Internal and external position indication for easy monitoring and adjustment
• Maintenance-free gearwheels and bearings enhance long-term reliability and reduce service needs

Specifications

• Model: SQM50.480A1
• Operating Voltage: AC 110 V (50/60 Hz)
• Torque: 140 lb-in (15 Nm)
• Running Time: 25 seconds for 90 degree rotation (at 60 Hz) / 30 seconds (at 50 Hz)
• Switches: 8 internal auxiliary/limit switches
• Rotation Angle: Adjustable up to 160 degrees
• Protection Rating: IP54 (when appropriate cable glands are used)
• Mounting: Flexible mounting positions with front and bottom fixing holes

Applications

• Load-dependent control of gas flow, oil volume, and combustion air volume in industrial burners
• Positioning of air and gas dampers in HVAC and boiler systems
• Driving flow control valves, butterfly valves, and other equipment requiring rotary motion
• Suitable for medium to large capacity oil and gas burner systems
• Integration into complex burner control sequences using Siemens LMV5 or similar burner management systems