SQM50.264R1G4 Siemens Damper Motor

Overview

The Siemens SQM50.264R1G4 is a high-precision reversing actuator designed for the accurate positioning of flow control valves, dampers, and butterfly valves in industrial and commercial combustion systems. Part of the SQM5 series, this electromotive actuator is engineered for applications requiring exceptional modulating accuracy and repeatability. It features a robust die-cast aluminum housing and a modular design that allows for field-exchangeable circuit boards and potentiometers, ensuring high versatility and ease of maintenance.

Features

• Internal adjustability with two limit switches and four auxiliary switches for precise control and signaling
• Integrated auto/manual switch and manual forward/reverse toggle for simplified commissioning and adjustments
• Self-disengaging clutches for the drive shaft and cam drum to facilitate quick manual alignment
• Externally visible position indicator providing clear status of the shaft’s orientation
• Low-hysteresis gear train combined with a synchronous motor for consistent performance
• Field-reversible rotation (clockwise or counterclockwise) to suit specific installation requirements
• Durable construction with a protection rating suitable for demanding industrial environments

Specifications

• Model: SQM50.264R1G4
• Torque: 90 lb-in (10 Nm)
• Running Time: 8 seconds for 90 degree rotation (at 60 Hz); 10 seconds (at 50 Hz)
• Operating Voltage: 110-120 VAC, 50/60 Hz
• Control Input Signal: 4 to 20 mA DC
• Shaft Type: 3/8 inch square, dual-ended shaft
• Rotational Direction: Counterclockwise (CCW) standard, field reversible
• Number of Switches: 6 (2 limit switches, 4 auxiliary switches)
• Potentiometer: 135 degree feedback capability
• Approvals: UL recognized, CSA certified, and CE approved

Applications

• Precise positioning of air and gas dampers in burner systems
• Control of flow valves and butterfly valves for process heating
• Industrial process control requiring high accuracy and repeatability
• Dual-fuel burner applications utilizing auxiliary switches for separate ignition and fire positions
• Replacement of competitive actuators in HVAC and industrial combustion trains via flexible mounting options