Opener Logic (Design) - Chamberlain LiftMaster Professional LM1000A Service Training Manual

Opener Logic (Design)

DC motor
Keyless
entry system
Remote
control
The opener is activated by operating the remote control, the wall-mounted multi-function door
control panel, the illuminated wall-mounted door control push-button or the keyless entry system.
When the drive is activated, it either opens or closes the garage door and then switches itself off.
Trans-
mission
Obstacle
recognition
Opener logic
Receiver
Multi-function
door control panel
Light
Light Opener
switch lock
Push-button
FIGURE 1: DESIGN
Belt drive
Chain
drive
24V DC
Travel
Trans-
data
former
24V DC
Flashing
lamp
Door-in-
door switch
Infrared
Sensor
Keylock
Automatic
closing system
7