Overview
The Siemens SQM56.584R1H4 is a high-torque reversing actuator designed for the precise positioning of dampers, flow control valves, and butterfly valves. As part of the 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 robust design with a double-offset drive and potentiometer gearing to ensure low hysteresis and reliable long-term performance.
Features
- High-torque output of 310 in-lbs for handling large dampers and valves
- Equipped with eight auxiliary switches for complex control logic and feedback
- Integrated auto/manual selector switch and manual forward/reverse toggle for easy adjustments and commissioning
- Externally visible shaft position indicator for quick status monitoring
- Field-reversible rotation (clockwise or counter-clockwise) to suit specific installation requirements
- Low hysteresis design with double-offset drive for superior rotational resolution
Specifications
- Model: SQM56.584R1H4
- Operating Voltage: 110/120 VAC (60 Hz)
- Torque: 310 in-lbs (35 Nm)
- Runtime for 90 Degrees: 37 seconds at 60 Hz (45 seconds at 50 Hz)
- Number of Switches: 2 limit switches and 6 auxiliary switches (8 total)
- Control Input: 135 Ohm (compatible with various control signals via exchangeable circuit boards)
- Shaft Type: Includes AGA58.4 shaft
- Operating Temperature: -4 F to 140 F (-20 C to 60 C)
- Approvals: UL, CSA, and CE
Applications
- Positioning of air and gas dampers in industrial burner systems
- Control of flow control valves and butterfly valves for fuel/air ratio regulation
- Advanced modulation in HVAC and process heating applications
- Integration with Siemens burner controls (e.g., LMV or LME series) for safety shut-off and modulation
- Industrial processes requiring precise high-torque rotary motion and repeatable positioning



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