Overview
The Siemens SQM56.564R1A is a high-precision reversing electromotive actuator designed for the accurate positioning of dampers, flow control valves, butterfly valves, or any application requiring rotary motion. Engineered for industrial and commercial burner systems, this actuator provides a high degree of modulating accuracy and repeatability. It features a robust design with a die-cast aluminum housing and maintenance-free gearwheels, making it suitable for demanding environments where precise airflow or fuel control is critical for combustion efficiency.
Features
- Internal auto/manual selector switch and manual forward/reverse toggle switch for easy commissioning and adjustment
- Equipped with two limit switches and four internal auxiliary switches for flexible control logic and feedback
- Features drive shaft and cam drum disengagement clutches to facilitate manual positioning
- Externally visible position indicator allows for quick visual verification of the shaft angle
- Low hysteresis drive system with double-offset drive and potentiometer gearing ensures stable control
- Field-exchangeable circuit boards and potentiometers provide high serviceability and adaptability
- Impact-resistant and heat-resistant plastic cover protects internal components from environmental factors
Specifications
- Model: SQM56.564R1A
- Torque: 310 in-lb (35 Nm)
- Running Time: 37 seconds for 90 degree rotation
- Operating Voltage: 110V – 120V AC (50/60 Hz)
- Control Input: Position proportional
- Number of Switches: 6 (2 limit, 4 auxiliary)
- Shaft Type: 3/8 inch square dual-ended shaft
- Direction of Rotation: Counter-clockwise (CCW)
- Nominal Angle of Rotation: 90 degrees (adjustable to 160 degrees)
- Agency Approvals: UL and CSA certified
Applications
- Positioning of air and gas dampers in industrial oil and gas burners
- Control of flow control valves and butterfly valves for fuel-air ratio control
- Modulation of return air, exhaust, and bypass dampers in large-scale HVAC systems
- Ideal for high-demand burner cycles requiring precise, repeatable positioning for optimal combustion performance



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