SQM50.461R1Z7 Siemens Damper Motor

Overview

The Siemens SQM50.461R1Z7 is a high-precision reversing electromotive actuator designed for the accurate positioning of air dampers, gas dampers, and flow control valves in medium to large capacity oil and gas burners. Engineered for industrial and commercial applications, it features a robust die-cast aluminum housing and a modular design that allows for field-exchangeable circuit boards and potentiometers. This model is particularly valued for its high degree of modulating accuracy and repeatability, ensuring optimal combustion efficiency and reliable operation.

Features

• High torque performance of 140 in-lbs with a 25-second running time for 90 degree rotation
• Multi-input electronic module (AGA56.9) supports various control signals including 4-20 mA, 0-10 Vdc, and 0-135 Ohm
• Integrated double potentiometer (ASZ22.803) provides 1000/1000 Ohm feedback for precise position monitoring
• Equipped with six internal, easily adjustable auxiliary and limit switches for complex control sequences
• Features a 10 mm round single-ended drive shaft for standard mounting configurations
• Includes a manual/auto selector switch and forward/reverse toggle for easy commissioning and maintenance
• Disengagement clutches allow for separate manual alignment of the drive shaft and camshaft

Specifications

• Model: SQM50.461R1Z7
• Operating Voltage: 110-120 Vac (50/60 Hz)
• Torque: 140 in-lbs (16 Nm)
• Running Time: 25 seconds (for 90 degrees at 60 Hz)
• Rotational Direction: Counterclockwise (CCW) standard
• Shaft Design: 10 mm round, single-ended
• Control Input: Multi-input (Linearization, split range, override, and pre-set positioning)
• Feedback: Double potentiometer, 1000/1000 Ohm, 90 degree
• Protection Rating: NEMA 1, 2, 3, 3R, 3S, 5, 12, 13 (IP54)
• Temperature Range: -5 F to 140 F (-15 C to 60 C)

Applications

• Load-dependent control of combustion air, fuel oil, and gas volume in industrial burners
• Positioning of butterfly valves and flow control valves in HVAC and process heating systems
• Modulation of dampers in large-scale boiler systems to maintain precise air-to-fuel ratios
• Integration into OEM burner control systems requiring high turndown and reliable ignition sequencing
• Replacement for competitive actuators in existing industrial furnace and heating installations