SQM56.664R2G3R Siemens Damper Motor

Overview

The Siemens SQM56.664R2G3R is a high-precision reversing actuator designed to drive air and gas dampers in medium to large-capacity oil and gas burners. Engineered for industrial and commercial settings, this electromotive actuator provides load-dependent control of gas flow, oil volume, and combustion air. It is specifically designed for applications requiring a high degree of modulating accuracy and repeatability, and it can be used to replace competitive actuators like the Honeywell Mod III or Mod IV when paired with the appropriate mounting brackets.

Features

• Equipped with two limit switches and four internal auxiliary switches for a total of six easily adjustable switches
• Features an integrated auto/manual selector switch and a manual control forward/reverse toggle switch for easier commissioning and adjustments
• Includes drive shaft and cam drum disengagement clutches for manual positioning
• Low hysteresis gearing and double-offset drive ensure precise positioning and resolution
• Externally visible position indicator allows for quick status monitoring at the burner
• Field reversible direction of rotation, configured for clockwise (CW) operation in this specific variant
• Modular design supports a variety of field-exchangeable circuit boards, potentiometers, and shafts

Specifications

• Model: SQM56.664R2G3R
• Torque: 400 in-lbs (40 Nm)
• Running Time: 50 seconds for 90 degrees at 50 Hz (60 seconds at 60 Hz)
• Operating Voltage: AC 220-240 V (50/60 Hz)
• Control Signal: 4-20 mA input
• Number of Switches: 6 (2 limit, 4 auxiliary)
• Shaft Type: 3/8 inch (9.5 mm) square, dual-ended
• Rotational Direction: Clockwise (CW) when facing the gear end
• Protection Rating: IP54 (standard for SQM5 series)
• Approvals: CE approved

Applications

• Load-dependent control of gas and oil flow in industrial burner systems
• Regulation of combustion air volume for large boilers and furnace systems
• Positioning of flow control valves, butterfly valves, and dampers requiring rotary motion
• Integration with 3-position or modulating controllers and Siemens burner controls like the LMV5 series
• Suitable for replacement or retrofit projects in HVAC and combustion environments requiring high torque and reliable performance