Overview
The Siemens SQM56.564R1H4 is a high-precision, electromotive reversing actuator designed for the accurate positioning of air and gas dampers, flow control valves, and butterfly valves. Part of the robust SQM5 series, this actuator is engineered for industrial and commercial burner applications that require a high degree of modulating accuracy and repeatability. It features a die-cast aluminum housing and impact-resistant plastic covers, ensuring durability in demanding environments.
Features
- Internal and external position indication for easy monitoring
- Six easily accessible internal switches, including two limit switches and four auxiliary switches
- Auto/manual toggle switch and forward/reverse manual control for simplified adjustments
- Drive shaft and cam drum disengagement clutches for manual positioning
- Field-exchangeable circuit boards and potentiometers for flexible control options
- Maintenance-free gearwheels and bearings for long-term reliability
- Reversible rotational direction (standard is counterclockwise)
Specifications
- Model: SQM56.564R1H4
- Torque: 310 in-lb (approximately 35 Nm)
- Running Time: 37 seconds for 90 degree rotation (at 60 Hz)
- Operating Voltage: 110-120 Vac (50/60 Hz)
- Control Input: 0 to 135 Ohm signal
- Rotation Angle: Set for 135 degrees (adjustable up to 160 degrees)
- Shaft Type: 3/8 inch square, two-ended shaft
- Protection Rating: NEMA 4 (when using appropriate kits)
- Temperature Range: -4 F to +140 F (-20 C to +60 C)
Applications
- Positioning of air and gas dampers in industrial burner systems
- Control of flow control valves and butterfly valves for fuel/air ratio control
- Use in HVAC systems, boiler plants, and process heating applications
- Integration with Siemens burner controls or other modulating controllers requiring high-torque rotary motion



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