Siemens SIDOOR AT40 System Manual page 108

Controllers
6.3 Safety concept ATD4xxW
Implementation
For the implementation of this interfacing variant, the emergency stop signal is integrated
into the redundant antivalent safety circuit. The emergency stop element itself is only routed
to the SIDOOR controller through 1 channel. It is combined via an internal enabling logic with
a STOP door command of the highest priority.
The OPEN (door OPEN) and CLOSE (door CLOSE) door commands can only become
active if no emergency stop signal is present. The emergency stop signal is integrated in a
low-active branch. This is taken into account in the internal enabling logic.
After an emergency stop, a door command can only be activated again after both door
commands have been inactive together.
The OPEN (door OPEN) and CLOSE (door CLOSE) door commands are read in at the
inputs 4 or 3 with negative logic (low-active).
The emergency stop signal is only active in combination with the issuing of a door command
via the external OPEN (door OPEN) or CLOSE (door CLOSE) encoders.
All digital inputs available on the SIDOOR controller can be used for this application.
Image 6-20 Example emergency stop parameterization (digital control) via 3 digital inputs
Information regarding PLd
In the case of this interfacing variant, compliance with PLd only ensures that the motor
control is reliably read in by the OPEN (door OPEN) or CLOSE (door CLOSE) door
commands and the emergency stop signal in accordance with stop category 1. This does not
affect the distinction between the OPEN (door OPEN) and CLOSE (door CLOSE) door
commands.
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AT40, ATD400V, ATD400K, ATD4xxW, ATD400S, ATE250S, ATD400T
System Manual, 06/2016, A2B00096162-AN