SQM56.680R1Z3 Siemens Damper Motor

Overview

The Siemens SQM56.680R1Z3 is a high-precision, reversing actuator designed to position air and gas dampers or flow control valves in medium to large capacity oil and gas burners. As part of the robust SQM5 series, this electromotive actuator is engineered for applications requiring high modulating accuracy and repeatability. It features a modular design that allows for the integration of electronic function modules and potentiometers, ensuring precise control of combustion air and fuel volumes.

Features

• High torque output of 400 lb-in (40 Nm) for handling large-scale dampers and valves
• Equipped with eight auxiliary switches (two limit switches and six internal auxiliary switches) for complex feedback and control
• Reversible direction of rotation, field-adjustable between clockwise and counterclockwise
• Features an auto/manual selector switch and a manual control forward/reverse toggle switch
• Integrated drive shaft and cam drum disengagement clutches for easy manual adjustment
• Durable construction with die-cast aluminum housing and impact-resistant plastic covers
• Externally visible position indicator for at-a-glance status monitoring
• UL and CSA certified for use in North American industrial environments

Specifications

• Model: SQM56.680R1Z3
• Operating Voltage: AC 110 V to 120 V (+10% / -15%) at 50/60 Hz
• Rated Torque: 400 lb-in (40 Nm)
• Running Time (90 degrees): 50 seconds at 60 Hz (60 seconds at 50 Hz)
• Number of Switches: 8 (2 limit, 6 auxiliary)
• Shaft Design: No shaft included (must be ordered separately)
• Rotation Angle: Adjustable up to 160 degrees (standard 90-degree application)
• Protection Rating: NEMA 1 (IP54 depending on mounting)
• Ambient Temperature Range: -5 F to 140 F (-20 C to 60 C)

Applications

• Load-dependent control of gas flow, oil volume, and combustion air in industrial burners
• Positioning of flow control valves, butterfly valves, and heavy-duty air dampers
• Use in HVAC systems for central fan control and large-scale ventilation management
• Integration into burner control systems like the Siemens LMV5 series for optimized combustion efficiency
• Replacement for legacy actuators in high-demand industrial and commercial boiler applications