Siemens SIDOOR ATD401W System Manual page 97

Implementation
For the implementation of an emergency stop circuit, the emergency stop signal must be
routed to the SIDOOR controller in a safety-related manner (frequency-based or 2-channel
antivalent evaluation) and internally linked with a stop door command. A negation block must
be configured if a low-active emergency stop signal is used.
The following figure shows an example of a low-active emergency stop signal with
frequency-based channel protection at INPUT0.
Figure 3-17 Example emergency stop parameterization
ATD4xxW Door Controller for Industrial Applications
System Manual, 01/2017, A5E38080677-AB
SIDOOR functions
3.4 Safety functions
97