Elevator door drive AT12
Equipment Manual, 06/2020, A2B00086683-AD
9
Functions and device responses
5.1 Learn and test run
Pressing the learn run button for more than five seconds (S501) executes the automatic
determination of the parameters:
1. Detection of the direction of door movement and the "CLOSED" position
2. Determination of the friction values of the door system and the weight of the door.
3. Determination of the door width and the "OPEN" position. Closure of the door until it has
traveled through the entire determined door width and reached the "CLOSED" position.
These parameters are then saved, which takes three seconds.
5.2 DOOR OPEN command
The DOOR OPEN command opens the door according to the set speed of travel curve as long
as the command is present.
The transitions along the speed of travel curve (e.g. from acceleration to constant velocity)
are smoothed to prevent noises possibly arising from the play between the cabin and shaft
doors. The door reaches the "OPEN" position at creep speed. Then, if the DOOR OPEN
command is present, the door is held open with a reduced torque.
• The DOOR OPEN command must remain present throughout the entire opening
movement.
• The DOOR OPEN command must remain present continuously in order to maintain
continuous torque in the OPEN position.
The DOOR OPEN command has priority over all other control commands.
5.3 DOOR CLOSE command
The DOOR CLOSE command must remain present continuously in order to close the door.
After the door has closed, it is held in this position with reduced torque as long as the DOOR
CLOSE command remains present.
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