SQM50.464R1A4R Siemens Damper Motor

Overview

The Siemens SQM50.464R1A4R is a high-precision reversing actuator designed for the accurate positioning of air dampers, fuel-air ratio controls, and flow control valves in industrial and commercial combustion systems. Part of the robust SQM5 series, this model is engineered for reliability in applications requiring high modulating accuracy and repeatability. It features a reversible synchronous motor and is factory-configured for clockwise (CW) rotation. The modular design allows for significant field flexibility, including the use of exchangeable circuit boards and potentiometers to meet specific system requirements.

Features

• High-precision modulation for air and fuel control in burners and boilers
• Integrated potentiometer provides precise position feedback for the control system
• Reversible synchronous motor with field-reversible clockwise or counter-clockwise operation
• Six easily accessible internal switches (2 limit and 4 auxiliary) for flexible control logic
• Auto/manual toggle switch and manual forward/reverse switches for easy commissioning and adjustment
• Rugged die-cast aluminum housing with impact-proof plastic covers for industrial durability
• Disengagement clutches for the drive shaft and cam drum to facilitate manual adjustment
• Externally visible shaft position indicator for quick status verification

Specifications

• Model: SQM50.464R1A4R
• Torque: 140 in-lbs (16 Nm)
• Running Time: 25 seconds for 90 degree rotation (at 60 Hz)
• Operating Voltage: 110V – 120V AC
• Rotation: Clockwise (CW) factory configuration
• Stroke Range: Adjustable up to 135 degrees
• Shaft Type: 3/8 inch square dual-ended shaft
• Feedback: 1000 Ohm potentiometer (135 degree range)
• Protection Rating: Standard IP54 (NEMA 12 compatible); NEMA 4 versions available
• Approvals: UL, CSA, and CE certified

Applications

• Positioning of air and gas dampers in industrial burner systems
• Flow control for butterfly valves and fuel-air ratio control valves
• Modulating control for large-scale boilers and process heating equipment
• Integration with Siemens burner management systems such as the LMV series
• Applications requiring precise rotary motion in HVAC and industrial combustion processes