SQM56.667R1G3 Siemens Damper Motor

Overview

The Siemens SQM56.667R1G3 is a high-torque reversing actuator designed for the precise positioning of air and gas dampers, flow control valves, and butterfly valves in industrial and commercial burner applications. As part of the SQM5 series, this electromotive actuator is engineered for precision, offering high modulating accuracy and repeatability. It is particularly suited for medium to large capacity oil and gas burners where load-dependent control of combustion components is critical for performance and efficiency.

Features

• Ultra-high torque performance of 400 in-lbs for demanding industrial applications
• Internal auto/manual selector switch and manual forward/reverse toggle switch for simplified commissioning and adjustment
• Six easily accessible internal switches, including two limit switches and four auxiliary switches
• Externally visible shaft position indicator for quick status monitoring
• Low hysteresis design with double-offset drive and potentiometer gearing for enhanced accuracy
• Field-reversible rotation allowing for clockwise or counter-clockwise operation
• Disengagement clutches for both the drive shaft and camshaft to facilitate manual alignment
• Impact-resistant and heat-resistant plastic housing designed for industrial environments

Specifications

• Model: SQM56.667R1G3
• Torque: 400 in-lb (45 Nm)
• Running Time: 50 seconds for 90 degree travel
• Operating Voltage: 110-120 VAC, 50/60 Hz
• Control Signal: 4-20 mA modulating input
• Shaft Type: 14 mm round shaft
• Rotation: Counter-clockwise (CCW) default, field reversible
• Angular Rotation: Up to 160 degrees (typically used for 90 degrees)
• Protection Rating: NEMA 4 (IP54)
• Approvals: UL and CSA certified

Applications

• Load-dependent control of gas flow and oil volume in large industrial burners
• Positioning of air dampers for combustion air volume regulation
• Driving flow control valves and butterfly valves in process heating applications
• Used in conjunction with modulating controllers or directly by burner controls like the Siemens LMV5 series
• Industrial process control requiring high-torque rotary motion and precise modulating accuracy