SQM50.461R1G3 Siemens Damper Motor

Overview

The Siemens SQM50.461R1G3 is a high-precision reversing actuator designed for the accurate positioning of dampers, flow control valves, and butterfly valves in industrial and commercial combustion systems. Part of the robust SQM5 series, this motor is engineered for applications requiring high torque and reliable modulating control. It features a reversible design, allowing for both clockwise and counter-clockwise operation, and is particularly valued for its repeatability and accuracy in air-fuel ratio management.

Features

• Reversing motor allows for flexible positioning in either direction
• Integrated auto/manual selector switch for easy field adjustments
• Externally visible position indicator for quick status monitoring
• Low hysteresis drive system ensures high modulating accuracy
• Multiple internal auxiliary switches (typically six) for precise sequence control
• Modular design supports field-exchangeable circuit boards for various control functions
• Durable all-metal housing suitable for demanding industrial environments

Specifications

• Model: SQM50.461R1G3
• Torque: 140 lb-in
• Running Time: 25 seconds (for 90 degree travel at 60 Hz)
• Input Signal: 4-20 mA proportional control
• Power Supply: 110V AC (50/60 Hz)
• Shaft: 10 mm single-ended round shaft
• Rotation: Counter-clockwise (CCW) default
• Potentiometer: 1000 Ohm, 90-degree
• Approvals: UL and CSA listed

Applications

• Precise control of air and gas dampers in burner systems
• Positioning of butterfly valves for fuel flow regulation
• Modulating control for industrial process heating and boilers
• VAV system air volume control and exhaust management
• Replacement of competitive actuators in existing HVAC and combustion trains