The actuator is not provided with and does not require any limit switches, but is

electronically protected against overload. The anti-rotation strap supplied with the

actuator will prevent lateral movement.

The AMX series provides 95° of rotation and a visual indicator indicates position of the

actuator. When reaching the damper or actuator end position, the actuator

automatically stops. The gears can be manually disengaged with a button on the

actuator cover.

The AMX120-3 actuators use a sensorless brushless DC motor, which is controlled by

an Application Specific Integrated Circuit (ASIC). The ASIC monitors and controls the

actuator’s rotation and provides a digital rotation sensing (DRS) function to prevent

damage to the actuator in a stall condition. Power consumption is reduced in holding

mode.

Add-on auxiliary switches or feedback potentiometers are easily fastened directly onto

the actuator body for signaling and switching functions.