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Belimo AMB24-3 View full size

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Belimo AMB24-3


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Application:For on/off and floating point control of dampers in HVAC systems.Actuator sizing should be done in accordance with thedamper manufacturers specifications.The actuator is mounted directly to a damper shaft up to 1.05”in diameter by means of its universal clamp, self-centereddefault. A crankarm and several mounting brackets are availablefor applications where the actuator cannot be direct coupledto the damper shaft.Operation:The actuator is not provided with and does not require anylimit switches, but is electronically protected against overload.The anti-rotation strap supplied with the actuator will preventlateral movement.The AMB series provides 95ð of rotation and a visual indicatorindicates position of the actuator. When reaching the damperor actuator end position, the actuator automatically stops.The gears can be manually disengaged with a button on theactuator cover.The AMB24-3… actuators use a sensorless Brushless DCmotor, which is controlled by an Application SpecificIntegrated Circuit (ASIC). The ASIC monitors and controlsthe actuators rotation and provides a digital rotation sensing(DRS) function to prevent damage to the actuator in a stallcondition. Power consumption is reduced in holding mode.The AMB24-3-S version is provided with 1 built-in auxiliaryswitch. This SPDT switch is provided for safety interfacing orsignaling, for example, for fan start-up. The switching functionis adjustable 0 to 95ð. The auxiliary switch is double insulatedso an electrical ground connection is not necessary.Add on auxiliary switches or feedback potentiometers areeasily fastened directly onto the actuator body for signalingand switching functions.

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