SQM50.464R1Z3 Siemens Damper Motor

Overview

The Siemens SQM50.464R1Z3 is a high-precision reversing actuator motor designed for the accurate positioning of flow control valves, butterfly valves, and dampers in industrial and commercial burner applications. Part of the SQM5 series, this motor is engineered for high modulating accuracy and repeatability, making it ideal for systems requiring sophisticated load-dependent control of gas, oil, and combustion air. Its robust design features a die-cast aluminum housing and impact-resistant plastic covers, ensuring durability in demanding HVAC and combustion environments.

Features

• Reversing actuator with field-reversible clockwise or counterclockwise operation
• Multi-input control capabilities supporting 4-20 mA, 0-10 VDC, 0-135 Ohm, and floating control
• Integrated electronics with exchangeable circuit boards for various functions including auto/manual switching
• Includes two limit switches and four internal auxiliary switches for comprehensive position monitoring
• Low hysteresis gearing for precise motion and internally visible position indication
• Manual disengagement of the drive shaft and gear for easier setup and maintenance
• Self-checking or electronic self-supervision capabilities depending on the integrated control module

Specifications

• Model: SQM50.464R1Z3
• Torque: 140 lb-in (nominal)
• Running Time: 25 seconds for 90 degrees at 60 Hz (30 seconds at 50 Hz)
• Operating Voltage: 110-120 VAC (+10%/-15%)
• Rotation: Counterclockwise (CCW) default, field reversible
• Shaft Type: 3/8 inch square, dual-ended shaft
• Angular Rotation: Up to 160 degrees (factory set to 90 degrees)
• Auxiliary Switches: 6 total (2 limit, 4 auxiliary)
• Operating Temperature: -4 F to 140 F (-20 C to 60 C)
• Protection Rating: NEMA 1, 2, 3, 3R, 4, and 12 (with proper conduit)
• Approvals: UL recognized and CSA certified

Applications

• Positioning of air and gas dampers in medium to large capacity burners
• Control of flow valves and butterfly valves in oil and gas trains
• Load-dependent control of combustion air volume and fuel flow
• Suitable for use with 3-position or modulating controllers in HVAC systems
• Direct integration with burner controls like the Siemens LMV5 series