Siemens SIMATIC Distributed I/O ET 200eco PN Operating Instructions Manual page 262

Block diagram
Figure G-1 Higher-level safety shutdown of the outputs
When you use a pp-switching safety shutdown device, the power supply cable for connec­
tion of the ET 200eco PN modules must be routed cross-circuit proof.
Note the requirements of the standard EN 60204-1, "Cross-circuit proof routing".
NOTE
Maintain safe electrical isolation for voltages higher than SELV/PELV.
ET 200eco PN
Operating Instructions, 06/2022, A5E01250250-AN
G.1 Back-up oriented shutdown of ET 200eco PN standard modules
WARNING
Fail-safe shutdown of ET 200eco PN standard modules
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