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Functions and device responses
5.7 Blockage detection "OPEN"
5.7
Blockage detection "OPEN"
The door stops if it is blocked in the "OPEN" direction with a DOOR OPEN command present.
After approximately 2 seconds, the door automatically tries to reach its open position again.
This action is repeated a maximum of three times.
The door then remains stationary in this position.
If the DOOR OPEN command is canceled, the close command given, and the DOOR OPEN
command is then repeated, the door travels at normal speed to within about 2 cm of the
stored position of the obstruction, and then up to the obstruction at reduced speed.
The door drive stops there, and the opening action is repeated another 3 times.
If the obstruction has been removed beforehand, the door travels at reduced speed to
approximately 2 cm past the stored position of the obstruction, and then continues to its
open position at normal speed.
5.8
Nudge
The door does not automatically reverse in the operating state NUDGE. The DOOR CLOSE and
NUDGE commands must be present simultaneously. When an obstruction is detected, the
torque is reduced after one second to the motor's holding shut torque limit.
5.9
Restart after power failure
After a supply voltage failure, the door controller has to redetermine the end positions of the
door travel. To do this, the door travels on command at reduced speed (initial speed) until the
controller has detected both the "OPEN" and "CLOSED" end positions. The door then resumes
traveling at normal speed.
12
Elevator door drive AT12
Equipment Manual, 06/2020, A2B00086683-AD
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