SQM50.480R2Z3 Siemens Damper Motor

Overview

The Siemens SQM50.480R2Z3 is a high-performance rotary damper actuator designed for the precise positioning of air and gas dampers, butterfly valves, and other flow control devices. As part of the SQM5 series, this actuator is engineered for industrial and commercial burner applications that require a high degree of modulating accuracy and repeatability. It is a reversing actuator typically used in conjunction with burner controls or modulating controllers to optimize the combustion process.

Features

• High-torque output of 140 in-lb (15 Nm) suitable for medium to large capacity burners
• Equipped with eight internal switches, including two limit and six auxiliary switches for complex control sequences
• Integrated “Z board” electronic module providing multi-input/output capabilities, selectable electronic linearization, and split-range control
• Reversing motor allows for both clockwise and counter-clockwise positioning
• Auto/manual selector switch and manual forward/reverse toggle for simplified setup and commissioning
• Durable, industrial-grade construction with an externally visible shaft position indicator

Specifications

• Model: SQM50.480R2Z3
• Operating Voltage: AC 220-240 V (50/60 Hz)
• Running Time: 25 seconds for 90 degrees at 60 Hz (30 seconds at 50 Hz)
• Torque: 140 in-lb (15 Nm)
• Rotation: Counter-clockwise (CCW) default
• Number of Switches: 8 (2 limit, 6 auxiliary)
• Shaft Selection: No shaft included (designed for separate drive shaft installation)
• Protection Rating: UL recognized, CSA certified, and CE approved
• Operating Temperature: -20 C to +60 C

Applications

• Load-dependent control of combustion air and fuel amounts in oil and gas burners
• Positioning of butterfly valves and flow control valves in HVAC and industrial heating systems
• Precise damper control for process heating applications requiring high modulating resolution
• Integration with Siemens LMV5 or similar burner management systems for automated combustion control