BELIMO EFB24-SR Spring Return Fail-Safe, On/Off Damper Contr
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  5. BELIMO EFB24-SR Spring Return Fail-Safe, On/Off Damper Control Actuator w/ DC Motor, 24 VAC/DC
BELIMO EFB24-SR Spring Return Fail-Safe, On/Off Damper Control Actuator w/ DC Motor, 24 VAC/DC
EFB24-SR

BELIMO EFB24-SR Spring Return Fail-Safe, On/Off Damper Control Actuator w/ DC Motor, 24 VAC/DC

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Your Price: $1,070.40
Belimo EFB24-SR 24V S/R 270# 2-10VDC
Part Number: BE-EFB24-SR-nu
Availability: 3 IN STOCK Free Shipping.
For proportional modulation 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 500 ohm 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 EFB24-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.

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