SQM50.461R1G7 Siemens Damper Motor

Overview

The Siemens SQM50.461R1G7 is a high-precision reversing actuator designed for the accurate positioning of dampers and flow control valves in combustion systems. Engineered for both industrial and commercial applications, this rotary actuator provides reliable modulation of air and fuel flow. It features a robust design with high torque capacity and integrated electronics, making it particularly well-suited for systems requiring a high degree of modulating accuracy and repeatability, such as those controlled by the Siemens LMV5 series.

Features

• High modulating accuracy and rotational resolution for precise combustion control
• Integrated 4-20 mA electronic circuit board for seamless control signal integration
• Self-locking gear train ensures the actuator maintains its position when power is removed
• Six easily accessible internal auxiliary switches for flexible limit and position signaling
• Auto/manual selector switch and forward/reverse toggle for easy commissioning and maintenance
• Low hysteresis drive system combined with potentiometer gearing for reliable position monitoring
• Durable construction with a protection rating suitable for industrial environments (IP54/NEMA 12)

Specifications

• Model: SQM50.461R1G7
• Torque: 140 in-lb (16 Nm)
• Running Time: 25 seconds for 90 degree rotation (at 60 Hz)
• Operating Voltage: 110-120 VAC, 50/60 Hz
• Control Input: 4-20 mA
• Feedback: Integrated 1000 Ohm potentiometer (90 degree)
• Shaft Size: 10 mm round shaft, single-ended
• Rotational Direction: Counterclockwise (CCW) standard
• Weight: Approximately 10 lbs (4.5 kg)
• Operating Temperature: -5 F to 140 F (-15 C to 60 C)

Applications

• Positioning of air dampers in industrial and commercial burners
• Control of gas and oil flow control valves or butterfly valves
• Modulation of combustion air and fuel flow in process heating systems
• Integration into Siemens burner management systems like the LMV51 or LMV52
• Use in HVAC and boiler applications requiring high turndown and reliable ignition control