SIEMENS GLB161.1E General Purpose Rotary Damper Actuator
The SIEMENS GLB161.1E General Purpose Rotary Damper Actuator is engineered for precise control in HVAC and industrial automation systems. This actuator boasts a robust torque output of 10 Nm, a working voltage range of AC 24 V, and a control signal compatibility with 0…10 V DC, making it a versatile component for various damper applications. Its direct mounting capability and spring return function ensure straightforward installation and fail-safe operation, crucial for maintaining system integrity and operational efficiency.
Product Specifications
| Feature | Specification |
| :------------------ | :-------------------------------- |
| Torque | 10 Nm |
| Working Voltage | AC 24 V |
| Control Signal | 0…10 V DC |
| Power Consumption | 5 VA |
| Running Time | 150 s (for 90° angle of rotation) |
| Ambient Temperature | -20…+50 °C |
| Protection Class | IP54 |
| Mounting | Direct mount |
| Spring Return | Yes |
| Auxiliary Switches | Optional |
Core Features & Market Positioning
The SIEMENS GLB161.1E distinguishes itself through its reliable performance and adaptability in demanding environments. Its 10 Nm torque output is well-suited for medium-sized dampers, offering consistent and accurate positioning. The 24V AC operating voltage is a standard in building automation, simplifying integration with existing infrastructure. A key differentiator is its direct mounting design, which significantly reduces installation time and complexity compared to actuators requiring complex mounting brackets. The inclusion of a spring return mechanism ensures that dampers return to a safe position in case of power failure, a critical safety feature highly valued in industrial and commercial building management.
Key Application Scenarios
This rotary damper actuator finds extensive use in controlling airflow in ventilation and air conditioning systems within commercial buildings, hospitals, and educational institutions. Its precision makes it ideal for maintaining optimal indoor air quality and thermal comfort by regulating fresh air intake and exhaust. In industrial settings, the GLB161.1E is applied to control ventilation in manufacturing plants, control dampers in exhaust systems, and manage airflow in cleanroom environments where precise atmospheric control is paramount. Its robust IP54 protection class also makes it suitable for applications exposed to dust and moderate moisture.
Practical System Integration Guidance
Integration of the SIEMENS GLB161.1E is streamlined due to its direct mounting design, allowing it to be fitted onto standard damper shafts without specialized adapters. Wiring typically involves connecting the power supply (AC 24 V) to the appropriate terminals and the control signal (0-10 V DC) from a building management system (BMS) or a dedicated controller. For systems requiring feedback on damper position, optional auxiliary switches can be wired to provide status signals to the BMS. Commissioning involves ensuring the actuator's end stops are correctly set for the desired damper travel range.
Operation and Risk Mitigation
The actuator operates by receiving a control signal that dictates its position. For instance, a 0 V signal might correspond to one end stop, and a 10 V signal to the other, with proportional control achieved at intermediate voltage levels. The spring return function acts as a critical risk mitigation measure, automatically moving the damper to a predetermined safe position (e.g., fully open or closed, depending on configuration) if power is lost, preventing uncontrolled airflow or potential system damage. Users should ensure that the chosen safe position aligns with emergency protocols for the specific application. Regular inspection of wiring and mechanical connections is recommended to prevent operational faults.
Scalability & Long-Term Value
The SIEMENS GLB161.1E is designed for seamless integration into larger Siemens building automation platforms, such as Desigo. This compatibility ensures that the actuator can be part of scalable solutions, allowing for expansion of control systems without compromising existing functionality. Its robust construction and adherence to Siemens' quality standards contribute to a long operational lifespan, reducing the need for frequent replacements and associated maintenance costs. For facilities looking to implement smart building technologies, the GLB161.1E's compatibility with standard analog control signals allows it to be incorporated into IIoT frameworks for enhanced monitoring and predictive maintenance strategies.
Frequently Asked Questions
What is the primary function of the SIEMENS GLB161.1E?
The SIEMENS GLB161.1E serves as a general-purpose actuator for controlling the position of dampers in HVAC systems. It precisely regulates airflow by rotating a connected damper blade.
Its core purpose is to provide accurate and reliable damper positioning, contributing to optimal indoor air quality and energy efficiency. This makes it a key component in modern building automation.
The actuator is particularly useful in applications where fine-tuned airflow control is necessary, such as in ventilation systems, air handling units, and zone control.
How is the SIEMENS GLB161.1E installed and wired?
Installation is typically direct onto the damper shaft, simplifying the mounting process. Ensure the actuator's drive shaft coupling is properly secured to the damper stem.
Wiring involves connecting the AC 24 V power supply to the designated terminals and the 0-10 V DC control signal from your building management system. Follow the wiring diagram provided by Siemens.
For feedback, optional auxiliary switches can be integrated into the wiring to signal the damper's position to your control system. Always disconnect power before performing any wiring.
What are the main advantages of using the GLB161.1E?
Its primary advantage is the reliable 10 Nm torque, suitable for many common damper sizes. The direct mounting design significantly reduces installation time and cost.
The spring return function provides essential fail-safe operation, automatically moving the damper to a safe position upon power loss. This enhances system safety.
Its compatibility with AC 24 V and 0-10 V DC control signals ensures easy integration into a wide range of existing HVAC and building automation systems.
Can the SIEMENS GLB161.1E be used in outdoor applications?
The GLB161.1E actuator has an IP54 protection class rating. This means it offers protection against dust ingress and splashing water.
While suitable for environments with moderate dust or moisture, it is not designed for direct exposure to heavy rain or submersion in water. Proper enclosure or shielding may be necessary for harsh outdoor conditions.
Consider the ambient temperature range of -20 to +50 °C when planning for outdoor installations to ensure optimal performance and longevity.
What is the typical running time for the GLB161.1E?
The actuator has a running time of approximately 150 seconds for a 90-degree angle of rotation. This timing is crucial for smooth damper movement.
This running time ensures that the damper moves at a controlled pace, preventing sudden air velocity changes that could be disruptive or damaging to the system.
Variations in running time might occur based on load conditions, but the 150-second specification is the standard for calculating control cycle times and system response.
What kind of control signal does the GLB161.1E accept?
This actuator is designed to accept a standard analog control signal of 0-10 V DC. This is a widely used standard in building automation.
This signal allows for proportional control, meaning the damper can be positioned anywhere between fully open and fully closed, based on the voltage level.
The 0-10 V DC input provides precise modulation of airflow, crucial for maintaining optimal conditions in sensitive environments like cleanrooms or laboratories.
What are the power requirements for this actuator?
The SIEMENS GLB161.1E operates on a working voltage of AC 24 V. This is a common and safe voltage level for building automation equipment.
Its power consumption is rated at 5 VA. This low power draw makes it energy-efficient, especially when many actuators are used in a large system.
Ensure your transformer can supply sufficient power for all connected actuators and other AC 24 V devices in your installation.
Does the GLB161.1E have a spring return function, and why is it important?
Yes, the GLB161.1E features a spring return function. This is a critical safety feature for damper control.
In the event of a power failure, the spring mechanism automatically moves the damper to a predefined safe position, such as fully open or closed, as per system design.
This fail-safe operation is vital for preventing uncontrolled airflow, maintaining essential ventilation during emergencies, or protecting sensitive equipment.
What is the torque output of the SIEMENS GLB161.1E?
The SIEMENS GLB161.1E provides a torque output of 10 Nm. This is sufficient for operating most medium-sized dampers.
This torque rating ensures that the actuator can reliably move and hold the damper blade in the desired position, even against moderate air pressure.
When selecting an actuator, always verify that its torque rating meets or exceeds the requirements of the specific damper being controlled to ensure proper operation.
How does the IP54 rating benefit the application of this actuator?
The IP54 rating indicates that the actuator is protected against dust ingress and splashing water from any direction. This enhances its suitability for various environments.
This level of protection makes the GLB161.1E robust enough for installation in areas that may not be perfectly clean or dry, such as some industrial zones or mechanical rooms.
It reduces the risk of operational failure due to environmental contaminants, contributing to a longer service life and reduced maintenance needs in less-than-ideal conditions.
