SQM50.364R1G3R Siemens Damper Motor

Overview

The Siemens SQM50.364R1G3R is a high-precision reversing actuator designed to provide rotary motion for the positioning of dampers, butterfly valves, and flow control valves. Engineered for industrial and commercial burner applications, this actuator is particularly well-suited for systems requiring a high degree of modulating accuracy and repeatability. It features a robust design with die-cast aluminum housing and a synchronous motor, ensuring reliable performance in demanding HVAC and process heating environments.

Features

• Equipped with two limit switches and four internal auxiliary switches for flexible control configurations
• Includes a fully closed economy position switch to drive the actuator to a closed state when the burner is inactive
• Features drive shaft and cam drum disengagement clutches for quick manual alignment during commissioning
• Integrated auto/manual switch and a manual forward/reverse toggle switch provide direct local control
• Externally visible position indicator allows for easy monitoring of the shaft orientation
• Field-exchangeable circuit boards and potentiometers enhance serviceability and functional versatility

Specifications

• Model: SQM50.364R1G3R
• Operating Voltage: 110V AC to 120V AC (50/60 Hz)
• Torque: 140 in-lbs (16 Nm)
• Running Time: 12 seconds for 90 degree rotation (at 60 Hz)
• Rotation Direction: Clockwise (CW) when facing the driveshaft
• Input Control Signal: 4 to 20 mA (via Control Board G)
• Drive Shaft: 3/8 inch square, dual-ended shaft
• Angular Rotation: Adjusted for 90 degrees
• Operating Temperature: -4 F to 140 F (-20 C to 60 C)
• Protection Rating: NEMA 1, 2, 3, 3R, 4, 12 and IP54

Applications

• Precise positioning of air and gas dampers in medium to large capacity oil and gas burners
• Load-dependent control of combustion air volume, gas flow, and oil volume
• Integration with modulating controllers or direct operation by burner control systems (e.g., Siemens LMV5)
• Industrial process heating and commercial boiler systems requiring high turndown ratios
• Replacement of competitive actuators using a variety of available mounting brackets and shafts