AFB24-SR | Damper Actuator | 180 in-lb | Spg Rtn | 24V | Modulating | Belimo
Details for AFB24-SR
Damper Actuator | 180 in-lb | Spg Rtn | 24V | Modulating
For fail-safe, modulating control of dampers in HVAC systems. Actuator sizing should be done in accordance with the damper manufacturer’s specifications. The actuator is mounted directly to a damper shaft up to 1.05” in diameter by means of its universal clamp. A crank arm and several mounting brackets are available for applications where the actuator cannot be direct coupled to the damper shaft. The actuator operates in response to a 2 to 10 VDC or, with the addition of a 500Ω resistor, a 4 to 20 mA control input from an electronic controller or positioner. A 2 to 10 VDC feedback signal is provided for position indication. Not to be used for a master-slave application.
The AF..24-SR series actuators provide true spring return operation for reliable fail-safe application and positive close off on air tight dampers. The spring return system provides constant torque to the damper with, and without, power applied to the actuator. The AF..24-SR series provides 95° of rotation and is provided with a graduated position indicator showing 0° to 95°. The AF..24-SR uses a brushless DC motor which is controlled by an Application Specific Integrated Circuit (ASIC) and a microprocessor. The microprocessor provides the intelligence to the ASIC to provide a constant rotation rate and to know the actuator’s exact fail-safe position. The ASIC monitors and controls the brushless DC motor’s rotation and provides a digital rotation sensing function to prevent damage to the actuator in a stall condition. The actuator may be stalled anywhere in its normal rotation without the need of mechanical end switches.
The AF..24-SR actuator is shipped at +5° (5° from full fail-safe) to provide automatic compression against damper gaskets for tight shut-off. ATTENTION: AF..24-SR cannot be tandem mounted on the same damper or valve shaft. Only On/Off and MFT AF.. models can be used for tandem mount applications.
|Spring Return||Spring Return|
I love this actuator! It's so easy to use and it makes modulating the dampers in my HVAC system a breeze. I would definitely recommend it to anyone looking for an easy and reliable way to control their dampers.
Best for Me
I have been very happy with the performance of this actuator. It is easy to install and has worked flawlessly. The damper shaft it is mounted to is very smooth, so there is no slippage. I would definitely recommend this product to anyone looking for a reliable actuator for their HVAC system.
My New Favorite
I can attest that Belimo Actuators have been invaluable in helping reduce energy costs on those projects both you might want more help regulating heating or cooling or changing from one climatic system to another without stopping production. Super easily installed, there is minimal down time and disruption to your manufacturing process. I highly recommend giving them a try on your next project!