Siemens SIDOOR AT12, Manual, Page: 7 / 48

Introduction
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The comfort elevator door drive AT12 is an "intelligent" door drive with which the cabin and
shaft doors can be opened and closed at adjustable speeds and accelerations. This
maintenance-free drive unit consists of a speed-controlled DC motor with non-self-locking
gearing. The power is transmitted by a toothed belt. The toothed belt passes over a deflector
pulley, and can be fitted with two clutch holders. This enables it to drive both single-sided
and centrally-opening doors.
The AT12 is currently supplied with the following motor:
– 24 V / 1.8 A motor, suitable for a maximum total door panel weight of 120 kg
The door drive can be ordered with the drive pinion either on the left or right-hand side,
please see the drawing in the Appendix.
Operation of the door drive does not require limit switches.
The door width and the
"OPEN" and "CLOSED" positions are determined automatically.
An LED display on the controller indicates the current operating states.
The Appendix includes all the important dimension drawings, an assembly suggestion, and
the identification numbers for ordering the individual drive components.
Note
For reasons of clarity, these operating instructions do not contain complete, detailed
information about all product types. Similarly, they cannot cover every conceivable type of
installation, operation or maintenance.
Additional information about this product and its application can be found in the Internet
( www.siemens.com/sidoor ).
Furthermore, the contents of these Operating Instructions shall not become a part of or
modify any prior or existing agreement, commitment, or legal relationship. The sales contract
contains the entire obligation of SIEMENS. The warranty contained in the contract between
the parties is the sole warranty of SIEMENS. Any statements contained in these operating
instructions neither expand nor restrict the scope of these contractual warranty conditions.
Elevator door drive AT12
Manual, 02/2012, A2B00086683A-04
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