SQM48.497B9 Siemens Actuator

Overview

The Siemens SQM48.497B9 is a high-precision, high-torque electromotoric actuator designed for the accurate positioning of air and gas dampers or oil pressure controllers in medium to large capacity burners. Engineered for industrial and commercial use, this robust actuator is part of the Siemens SQM4 family and is primarily intended for use with the Siemens LMV5 linkageless burner management system. It utilizes a stepper motor and can be controlled via a CAN bus interface, ensuring reliable performance in demanding thermal process plants.

Features

• High-torque performance providing up to 20 Nm of rated and holding torque
• Precise modulating control driven by a stepper motor for accurate positioning
• Integrated CAN bus communication for seamless integration with burner controls like the LMV5 series
• Durable construction featuring a die-cast aluminum lower housing and impact-resistant plastic cover
• Maintenance-free operation with permanently lubricated steel spur gears
• Self-centering shaft adapter and flexible mounting options to simplify installation and ensure precise alignment
• IP54 protection rating to safeguard against dust and water splashes in industrial environments

Specifications

• Model: SQM48.497B9
• Torque: 20 Nm (approx. 177 in-lb)
• Running Time: 30 seconds for 90 degrees
• Power Supply: Provided via CAN bus
• Drive Shaft: 14 mm diameter with Woodruff key
• Radial Bearing Force: Up to 420 N
• Protection Class: IP54
• Operating Temperature: -20 C to +60 C
• Weight: Approximately 3.5 to 4.5 lbs (varies by source)

Applications

• Load-dependent control of gas flow, oil volume, and combustion air volume in industrial burners
• Driving air dampers and butterfly valves in HVAC and boiler systems
• Use in thermal process plants requiring reliable rotary motion
• Integration with Siemens LMV5 linkageless burner management systems for electronic fuel/air ratio control