Siemens SIDOOR AT40 System Manual page 106

Controllers
6.3 Safety concept ATD4xxW
Implementation
To implement this interfacing connection, the emergency stop signal must be routed in a
safety-related manner to the SIDOOR controller (2-channel antivalent evaluation here) and
internally linked with a stop door command.
A negation block must be configured because a low-active emergency stop signal is used
here.
The OPEN (door OPEN) and CLOSE (door CLOSE) door commands can only become
active if no emergency stop signal is present.
All signals are safeguarded by redundant antivalence and therefore comply with PLd.
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 6-18 Example emergency stop parameterization (digital control) via 4 digital inputs
106
AT40, ATD400V, ATD400K, ATD4xxW, ATD400S, ATE250S, ATD400T
System Manual, 06/2016, A2B00096162-AN