SQM50.484R2Z3 Siemens Damper Motor

Overview

The Siemens SQM50.484R2Z3 is a high-precision reversing actuator designed for the accurate positioning of air and gas dampers, flow control valves, and butterfly valves. Part of the robust SQM5 series, this electromotive damper motor is engineered for industrial and commercial burner applications that require a high degree of modulating accuracy and repeatability. It features a durable design capable of operating in any mounting position and is equipped with a self-checking mechanism to ensure reliable performance in medium to large capacity oil and gas burners.

Features

• Reversing actuator providing precise rotary motion for flow control applications
• Integrated auto/manual selector switch and manual forward/reverse toggle for easy adjustment and commissioning
• Equipped with eight internal, easily adjustable auxiliary switches for complex control sequences
• Externally visible shaft position indicator for quick status monitoring
• Disengagement clutches for the drive shaft and cam drum to facilitate manual settings
• Field-reversible rotation, specifically configured for counter-clockwise (CCW) operation in this model
• Low hysteresis gearing ensures high rotational resolution and consistent positioning

Specifications

• Model: SQM50.484R2Z3
• Power Supply: 220 V AC (CE approved)
• Torque: 140 lb-in (15 Nm)
• Running Time: 25 seconds for 90-degree rotation (at 60 Hz)
• Auxiliary Switches: 8 internal switches
• Rotation: Counter-clockwise (CCW)
• Drive Shaft: 3/8 inch square shaft
• Protection Rating: Designed for industrial environments, typically IP54 rated depending on installation
• Agency Approvals: CE certified

Applications

• Precise driving of air and gas dampers in industrial burner systems
• Load-dependent control of gas flow, oil volume, and combustion air volume
• Positioning of butterfly valves and other rotary flow control elements
• Integration with 3-position or modulating controllers (e.g., 4 to 20 mA)
• Use in medium to large capacity oil and gas burner installations for HVAC and process heating