Siemens SIDOOR AT12, Manual, Page: 27 / 48

The relay contacts
8
The relay contacts can be used to report the following door states to the higher-level elevator
controller:
●
X101 (PIN3 and PIN4)
Door has reached the
"CLOSED" position.
The relay switches on when the controller has detected the
"CLOSED" position and the
pulse generator ceases to output pulses, that is the door is stationary.
Pin 3 remains
connected to Pin 4 only until the
DOOR OPEN command is issued. The relay then drops
again immediately.
●
X101 (PIN1 and PIN2)
Door has reached the
"OPEN" position.
The relay switches on when the distance of the door from the
"OPEN" position falls below
2 cm. Pin 1 and Pin 2 are then connected. If the distance falls below 2 cm again, the relay
drops immediately.
In the "Overview of operator controls", the contacts are always shown with the relay de-
energized (inactive).
WARNING
The door controller is not a safety mechanism. Therefore the relay contacts must not be
used for the elevator safety circuit.
A voltage greater than 42 V must not be connected to the relay contacts.
Elevator door drive AT12
Manual, 02/2012, A2B00086683A-04
27