SQM56.664R1A4R Siemens Damper Motor

Overview

The Siemens SQM56.664R1A4R is a high-precision reversing actuator designed for the accurate positioning of dampers, flow control valves, and butterfly valves in industrial and commercial burner applications. Part of the robust SQM5 series, this electromotive actuator is engineered for heavy-duty service, providing reliable rotary motion for the load-dependent control of combustion air, oil volume, and gas flow. Its design emphasizes modulating accuracy and repeatability, making it an essential component for optimizing burner performance and efficiency.

Features

• Reversing motor allows for both clockwise and counterclockwise operation
• Integrated 90 degree feedback potentiometer for precise position monitoring
• Internal and external position indication for easy status verification
• Six easily accessible and adjustable internal auxiliary switches for complex control sequences
• Auto/manual selector switch and manual forward/reverse toggle for convenient commissioning and troubleshooting
• Low hysteresis drive mechanism with double-offset gearing ensures smooth and consistent motion
• Durable metal housing designed for a long service life of up to 250,000 burner startup cycles

Specifications

• Model: SQM56.664R1A4R
• Torque: 400 in-lb (approx. 45 Nm)
• Running Time: 50 seconds for 90 degree travel (at 60 Hz)
• Operating Voltage: AC 110 V – 120 V (50/60 Hz)
• Control Type: Position proportional
• Feedback: 1000 Ohm potentiometer, 90 degree
• Drive Shaft: 3/8 inch square shaft
• Rotation Direction: Clockwise (CW)
• Protection Rating: IP54 (with appropriate cable glands)
• Operating Temperature: -4 F to +140 F (-20 C to +60 C)

Applications

• Supervision and control of air and gas dampers in medium to large capacity oil and gas burners
• Positioning of flow control valves and butterfly valves in combustion systems
• Load-dependent control of combustion air volume and fuel flow
• Integration with building automation and burner control systems requiring high modulating accuracy
• Industrial heating, ventilation, and air conditioning (HVAC) systems requiring high-torque rotary actuators