Automatic air conditioning actuator motors, function - GF83.40-P-2182-02T

Function 

The actuator motors

Fresh air and recirculated air flap actuator motor (M2/5)

• Left blending air flap actuator motor (M2/6),
• Right blend air door actuator motor (M2/7),

Left and right footwell flap actuator motors (M2/15)

• Left and right defroster vent flap actuator motor (M2/16),
• Center outlet flap actuator motors (M2/22),

of the automatic air conditioning housing are actuated directly by the automatic air conditioning through the AC bus. An output stage is integrated into the ACC control and operating module (N22), with which the battery voltage for the actuator motors can be switched on and off. After switching on, the actual position of every flap stored before switching off is signaled to every actuator motor.

During regulation, the ACC control and operating module (N22) cyclically transmits a specified value to each actuator motor via a separate address. This then decides accordingly on the direction of rotation and moves automatically to the desired position. The AAC control and operating module (N22) signals its instantaneous position in response to every cyclic request for the specified value. The AAC control and operating module (N22) compares the received actual values with the specified values and recognizes whether an actuator motor is located at its specified position or is still running (relevant when switching off the ignition for saving the actual position). The motor remains stationary when detecting undervoltage or overvoltage, to protect the actuator motor and to prevent step loss. If the voltage has normalized again, the requested specified position is approached again automatically.