SQM50.464R2Z3 Siemens Damper Motor

Overview

The Siemens SQM50.464R2Z3 is a high-precision reversing actuator designed for the accurate positioning of air and gas dampers, flow control valves, and butterfly valves in medium to large capacity oil and gas burners. Engineered for industrial and commercial combustion systems, this electromotive motor provides reliable rotary motion and is particularly well-suited for applications requiring a high degree of modulating accuracy and repeatability. Its modular design allows for extensive customization through exchangeable circuit boards and shafts to meet specific system requirements.

Features

• Equipped with up to six internal, easily adjustable SPDT switches, including two limit switches and four auxiliary switches
• Features a multi-input electronic circuit board (AGA56.9) that supports 4-20 mA, 0-10 VDC, 0-135 Ohm, and position proportional control signals
• Includes a manual/automatic selector switch and a manual forward/reverse toggle switch for easy commissioning and adjustment
• Built with a rugged die-cast aluminum housing and impact-resistant plastic covers for durability in industrial environments
• Utilizes a synchronous motor and maintenance-free gear train to ensure consistent positioning speed
• Provides separate disengagement clutches for the drive shaft and camshaft, allowing for manual positioning
• Includes an externally visible shaft position indicator for quick status monitoring

Specifications

• Model: SQM50.464R2Z3
• Operating Voltage: 220V – 240V AC (50/60 Hz)
• Torque: 140 in-lb (16 Nm)
• Running Time: 30 seconds for 90 degree rotation (at 50 Hz) / 25 seconds (at 60 Hz)
• Shaft Type: 3/8 inch square, dual-ended shaft
• Control Inputs: Multi-input (4-20 mA, 0-10 VDC, 0-135 Ohm, Position Proportional)
• Feedback: 1000 Ohm, 90 degree potentiometer
• Number of Switches: 6 (2 limit, 4 auxiliary)
• Protection Rating: IP54 (with appropriate cable glands)
• Operating Temperature: -4 F to 140 F (-20 C to 60 C)

Applications

• Precise control of combustion air dampers in industrial burners and boilers
• Modulation of gas and oil flow control valves to maintain optimal fuel-air ratios
• Positioning of butterfly valves for air or flue gas regulation
• Use in thermal processing plants and large-scale heating systems requiring high-accuracy modulation
• Integration with Siemens burner management systems such as the LMV series