
Siemens-Talon 550-405N Controller
The Siemens-Talon 550-405N is an Actuating Terminal Equipment Controller (ATEC) specifically engineered for variable air volume (VAV) systems requiring integral reheat control. As a veteran-grade DDC controller, this unit combines a microprocessor-based electronic controller, a differential pressure sensor, and a 44 lb-in damper actuator into a single, compact housing to streamline installation on VAV boxes. It provides pressure-independent control of zone-level routines and features two 100K Ohm thermistor inputs and two Triac-type digital outputs for managing electric or hot water reheat coils. Operating on 24 Vac, the 550-405N utilizes PID control algorithms to minimize offset and ensure maximum occupant comfort through precise airflow management. Whether used in stand-alone operation or integrated into a broader building automation system, its EEPROM memory eliminates the need for battery backups, retaining critical setpoints through power cycles. This plenum-rated controller is ideal for demanding commercial environments where efficiency and tight setpoint maintenance are non-negotiable.
Key Benefits- Integrated Actuator: Simplifies field mounting with a direct-coupled 44 lb-in torque actuator, reducing assembly time and potential failure points.
- Precise Flow Measurement: The onboard differential pressure sensor converts measurement values into CFM for accurate, pressure-independent air delivery.
- Native Reheat Support: Pre-programmed with application-specific algorithms for VAV with reheat, including series and parallel fan configurations.
- Maintenance-Free Design: Features self-diagnostics and requires no routine calibration, lowering long-term operational overhead for facilities.
- Flexible Integration: Equipped with an RJ-11 jack for quick-connect room sensor attachment and removable terminal blocks for easy wiring.
Is the 550-405N compatible with non-Siemens sensors?
While optimized for Siemens-Talon 2200 and 2300 series room units via the RJ-11 port, the universal inputs can typically accept standard 100K Ohm thermistors for secondary monitoring.
Does this unit support electric reheat?
Yes, it is specifically configured to manage electric reheat or hot water reheat coils using its dedicated Triac digital outputs and control sequences.
What is the torque rating for the damper motor?
The integrated GDE actuator provides 44 lb-in (5 Nm) of torque, suitable for most standard VAV terminal units with shaft sizes up to 5/8 inch.
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.
Siemens-Talon 550-405N Controller
The Siemens-Talon 550-405N is an Actuating Terminal Equipment Controller (ATEC) specifically engineered for variable air volume (VAV) systems requiring integral reheat control. As a veteran-grade DDC controller, this unit combines a microprocessor-based electronic controller, a differential pressure sensor, and a 44 lb-in damper actuator into a single, compact housing to streamline installation on VAV boxes. It provides pressure-independent control of zone-level routines and features two 100K Ohm thermistor inputs and two Triac-type digital outputs for managing electric or hot water reheat coils. Operating on 24 Vac, the 550-405N utilizes PID control algorithms to minimize offset and ensure maximum occupant comfort through precise airflow management. Whether used in stand-alone operation or integrated into a broader building automation system, its EEPROM memory eliminates the need for battery backups, retaining critical setpoints through power cycles. This plenum-rated controller is ideal for demanding commercial environments where efficiency and tight setpoint maintenance are non-negotiable.
Key Benefits- Integrated Actuator: Simplifies field mounting with a direct-coupled 44 lb-in torque actuator, reducing assembly time and potential failure points.
- Precise Flow Measurement: The onboard differential pressure sensor converts measurement values into CFM for accurate, pressure-independent air delivery.
- Native Reheat Support: Pre-programmed with application-specific algorithms for VAV with reheat, including series and parallel fan configurations.
- Maintenance-Free Design: Features self-diagnostics and requires no routine calibration, lowering long-term operational overhead for facilities.
- Flexible Integration: Equipped with an RJ-11 jack for quick-connect room sensor attachment and removable terminal blocks for easy wiring.
Is the 550-405N compatible with non-Siemens sensors?
While optimized for Siemens-Talon 2200 and 2300 series room units via the RJ-11 port, the universal inputs can typically accept standard 100K Ohm thermistors for secondary monitoring.
Does this unit support electric reheat?
Yes, it is specifically configured to manage electric reheat or hot water reheat coils using its dedicated Triac digital outputs and control sequences.
What is the torque rating for the damper motor?
The integrated GDE actuator provides 44 lb-in (5 Nm) of torque, suitable for most standard VAV terminal units with shaft sizes up to 5/8 inch.
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-Talon 550-405N is an Actuating Terminal Equipment Controller (ATEC) specifically engineered for variable air volume (VAV) systems requiring integral reheat control. As a veteran-grade DDC controller, this unit combines a microprocessor-based electronic controller, a differential pressure sensor, and a 44 lb-in damper actuator into a single, compact housing to streamline installation on VAV boxes. It provides pressure-independent control of zone-level routines and features two 100K Ohm thermistor inputs and two Triac-type digital outputs for managing electric or hot water reheat coils. Operating on 24 Vac, the 550-405N utilizes PID control algorithms to minimize offset and ensure maximum occupant comfort through precise airflow management. Whether used in stand-alone operation or integrated into a broader building automation system, its EEPROM memory eliminates the need for battery backups, retaining critical setpoints through power cycles. This plenum-rated controller is ideal for demanding commercial environments where efficiency and tight setpoint maintenance are non-negotiable.
Key Benefits- Integrated Actuator: Simplifies field mounting with a direct-coupled 44 lb-in torque actuator, reducing assembly time and potential failure points.
- Precise Flow Measurement: The onboard differential pressure sensor converts measurement values into CFM for accurate, pressure-independent air delivery.
- Native Reheat Support: Pre-programmed with application-specific algorithms for VAV with reheat, including series and parallel fan configurations.
- Maintenance-Free Design: Features self-diagnostics and requires no routine calibration, lowering long-term operational overhead for facilities.
- Flexible Integration: Equipped with an RJ-11 jack for quick-connect room sensor attachment and removable terminal blocks for easy wiring.
Is the 550-405N compatible with non-Siemens sensors?
While optimized for Siemens-Talon 2200 and 2300 series room units via the RJ-11 port, the universal inputs can typically accept standard 100K Ohm thermistors for secondary monitoring.
Does this unit support electric reheat?
Yes, it is specifically configured to manage electric reheat or hot water reheat coils using its dedicated Triac digital outputs and control sequences.
What is the torque rating for the damper motor?
The integrated GDE actuator provides 44 lb-in (5 Nm) of torque, suitable for most standard VAV terminal units with shaft sizes up to 5/8 inch.
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.












