Overview
The Siemens SQM56.567R1G3 is a high-torque reversing actuator designed for the precise positioning of air dampers, flow control valves, and butterfly valves in industrial and commercial burner systems. Engineered for high modulating accuracy and repeatability, this actuator provides reliable rotary motion to manage the flow of gas, oil, and combustion air. Its robust design features a die-cast aluminum housing and a maintenance-free gear train, making it suitable for demanding HVAC and process heating applications.
Features
- High-torque output of 310 in-lbs for controlling large valves and dampers
- Modulating control via a 4-20 mA input signal for precise adjustment
- Integrated auto/manual selector and manual forward/reverse toggle switches for simplified commissioning
- Disengageable drive shaft and cam drum clutches allow for quick manual alignment
- Six internal, adjustable switches including two limit switches and four auxiliary switches
- Externally visible position indicator for easy status monitoring at the device
- Field-reversible rotation direction, configured for clockwise (CW) operation in this model
- Durable construction with a heat-resistant plastic cover and IP54 protection rating
Specifications
- Model: SQM56.567R1G3
- Operating Voltage: 110V – 120V AC (50/60 Hz)
- Torque: 310 in-lb (approx. 35 Nm)
- Running Time: 37 seconds for 90 degree rotation (at 60 Hz)
- Control Signal: 4-20 mA input
- Shaft Type: 14 mm round shaft with parallel key
- Rotational Direction: Clockwise (CW)
- Angular Rotation: Adjustable up to 160 degrees
- Power Consumption: 20 VA
- Protection Rating: IP54
Applications
- Load-dependent control of gas and oil amounts in industrial burner trains
- Precise positioning of combustion air dampers in high-turndown burner systems
- Actuation of flow control and butterfly valves in process heating applications
- Integration with Siemens burner controls or external 3-position/modulating controllers
- Dual-fuel applications requiring separate ignition and fire positions via auxiliary switches



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