Overview
The Siemens SQM56.564R1A3R is a high-precision, reversing electromotive actuator designed for the accurate positioning of air and gas dampers, flow control valves, and butterfly valves. As part of the SQM5 series, it is engineered for heavy-duty industrial and commercial burner applications that require high modulating accuracy and repeatability. This specific model is configured for clockwise (CW) rotation and features a robust design capable of withstanding demanding environments while providing reliable service.
Features
- High modulating accuracy with 250 repositions through 90 degrees of travel
- Internal auto/manual selector switch and manual forward/reverse toggle switch for easy commissioning and adjustments
- Equipped with two limit switches and up to four internal auxiliary switches for flexible position feedback
- Fully closed economy position switch to ensure airtight shut-off when the burner is inactive
- Separate disengagement clutches for the drive shaft and cam drum to allow for quick manual alignment
- Externally visible shaft position indicator for simplified monitoring
- Field-exchangeable circuit boards and potentiometers for versatile control options and maintenance
Specifications
- Model: SQM56.564R1A3R
- Operating Voltage: 110-120 Vac (50/60 Hz)
- Torque Output: 310 in-lbs (35 Nm)
- Running Time: 37 seconds for 90-degree rotation (at 60 Hz)
- Rotation Direction: Clockwise (CW) when facing the gear end
- Shaft Type: 3/8-inch square, two-ended (dual-ended)
- Control Input: Position proportional (via AGA56.1A97 internal circuit board)
- Feedback: 1000 Ohm, 90-degree potentiometer (ASZ series)
- Protection Rating: Designed to meet NEMA 1, 2, 3, 3R, 4, and 12 (when used with appropriate conduit connections)
- Approvals: UL recognized and CSA certified
Applications
- Positioning of air and gas dampers in industrial and commercial burner systems
- Control of flow control valves and butterfly valves for precise air/fuel ratio management
- Suitable for use with Siemens burner controls such as the LMV5 or LME7 series
- Ideal for high-demand HVAC and process heating applications requiring rotary motion
- Applicable in dual-fuel systems to manage separate ignition and fire positions for different fuels



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