Siemens Combustion SQM40.255R11 Actuator
The Siemens SQM40.255R11 is a high-torque combustion actuator engineered for precise modulation of fuel and air flow in industrial burner systems. Operating on 110V AC, this modulating motor utilizes a 4-20 mA control signal with a 135 Ohm impedance to drive butterfly valves, dampers, and oil pressure controllers. Designed specifically for counter-clockwise (CCW) operation, the unit delivers 90 in-lb of torque with a 90-degree stroke time of 25 seconds. The 10mm "D" drive shaft ensures a secure mechanical connection, while the integrated Form-C auxiliary switch provides essential position feedback for burner management systems. This actuator is a standard for medium to high-capacity oil and gas burners and thermal process plants where load-dependent control is critical for maintaining combustion efficiency and safety. Its rugged construction provides the durability required for continuous duty cycles in demanding mechanical rooms.
Key Technical Benefits
- Precision Modulation: High-resolution positioning via 4-20 mA input allows for tighter air-to-fuel ratio control and improved thermal efficiency.
- Industrial-Grade Torque: Delivers 90 in-lb of force, making it suitable for larger dampers and high-pressure butterfly valves.
- Simplified Integration: The 10mm "D" shaft and standard 110V power requirements allow for direct replacement in existing combustion assemblies.
- Reliable Feedback: The Form-C auxiliary switch facilitates easy sequencing and interlocking with external safety controls.
Common Questions
Can the rotation direction be reversed in the field?
The SQM40.255R11 is factory-configured for counter-clockwise (CCW) rotation. For clockwise (CW) requirements, an SQM41 series actuator should be specified to ensure proper valve or damper alignment.
What is the primary difference between the SQM40 and SQM45 series?
The SQM40 utilizes traditional analog control signals like 4-20 mA or 135 Ohm potentiometers, whereas the SQM45 series is typically designed for integration with Siemens LMV electronic linkageless systems via CAN bus communication.
Is this actuator compatible with 3-position control systems?
Yes, while optimized for 4-20 mA modulation, this unit can be integrated into systems requiring accurate 3-position control for low-fire, high-fire, and purge cycles.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $801.36
-65%$801.36
$280.48Siemens Combustion SQM40.255R11 Actuator
The Siemens SQM40.255R11 is a high-torque combustion actuator engineered for precise modulation of fuel and air flow in industrial burner systems. Operating on 110V AC, this modulating motor utilizes a 4-20 mA control signal with a 135 Ohm impedance to drive butterfly valves, dampers, and oil pressure controllers. Designed specifically for counter-clockwise (CCW) operation, the unit delivers 90 in-lb of torque with a 90-degree stroke time of 25 seconds. The 10mm "D" drive shaft ensures a secure mechanical connection, while the integrated Form-C auxiliary switch provides essential position feedback for burner management systems. This actuator is a standard for medium to high-capacity oil and gas burners and thermal process plants where load-dependent control is critical for maintaining combustion efficiency and safety. Its rugged construction provides the durability required for continuous duty cycles in demanding mechanical rooms.
Key Technical Benefits
- Precision Modulation: High-resolution positioning via 4-20 mA input allows for tighter air-to-fuel ratio control and improved thermal efficiency.
- Industrial-Grade Torque: Delivers 90 in-lb of force, making it suitable for larger dampers and high-pressure butterfly valves.
- Simplified Integration: The 10mm "D" shaft and standard 110V power requirements allow for direct replacement in existing combustion assemblies.
- Reliable Feedback: The Form-C auxiliary switch facilitates easy sequencing and interlocking with external safety controls.
Common Questions
Can the rotation direction be reversed in the field?
The SQM40.255R11 is factory-configured for counter-clockwise (CCW) rotation. For clockwise (CW) requirements, an SQM41 series actuator should be specified to ensure proper valve or damper alignment.
What is the primary difference between the SQM40 and SQM45 series?
The SQM40 utilizes traditional analog control signals like 4-20 mA or 135 Ohm potentiometers, whereas the SQM45 series is typically designed for integration with Siemens LMV electronic linkageless systems via CAN bus communication.
Is this actuator compatible with 3-position control systems?
Yes, while optimized for 4-20 mA modulation, this unit can be integrated into systems requiring accurate 3-position control for low-fire, high-fire, and purge cycles.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Siemens SQM40.255R11 is a high-torque combustion actuator engineered for precise modulation of fuel and air flow in industrial burner systems. Operating on 110V AC, this modulating motor utilizes a 4-20 mA control signal with a 135 Ohm impedance to drive butterfly valves, dampers, and oil pressure controllers. Designed specifically for counter-clockwise (CCW) operation, the unit delivers 90 in-lb of torque with a 90-degree stroke time of 25 seconds. The 10mm "D" drive shaft ensures a secure mechanical connection, while the integrated Form-C auxiliary switch provides essential position feedback for burner management systems. This actuator is a standard for medium to high-capacity oil and gas burners and thermal process plants where load-dependent control is critical for maintaining combustion efficiency and safety. Its rugged construction provides the durability required for continuous duty cycles in demanding mechanical rooms.
Key Technical Benefits
- Precision Modulation: High-resolution positioning via 4-20 mA input allows for tighter air-to-fuel ratio control and improved thermal efficiency.
- Industrial-Grade Torque: Delivers 90 in-lb of force, making it suitable for larger dampers and high-pressure butterfly valves.
- Simplified Integration: The 10mm "D" shaft and standard 110V power requirements allow for direct replacement in existing combustion assemblies.
- Reliable Feedback: The Form-C auxiliary switch facilitates easy sequencing and interlocking with external safety controls.
Common Questions
Can the rotation direction be reversed in the field?
The SQM40.255R11 is factory-configured for counter-clockwise (CCW) rotation. For clockwise (CW) requirements, an SQM41 series actuator should be specified to ensure proper valve or damper alignment.
What is the primary difference between the SQM40 and SQM45 series?
The SQM40 utilizes traditional analog control signals like 4-20 mA or 135 Ohm potentiometers, whereas the SQM45 series is typically designed for integration with Siemens LMV electronic linkageless systems via CAN bus communication.
Is this actuator compatible with 3-position control systems?
Yes, while optimized for 4-20 mA modulation, this unit can be integrated into systems requiring accurate 3-position control for low-fire, high-fire, and purge cycles.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
