User Manual
SIRIUS ACT 3SU1 pushbuttons and signaling devices 
System Manual, 02/2015, A5E03457306020A/RS-AB/002 
265 
  Application examples 
13 
13.1
Examples of EMERGENCY STOP shutdown applications 
13.1.1
Emergency stop shutdown to SIL 3 or PL e with a safety relay 
Application 
Two-channel emergency stop shutdown of a motor by a 3SK1 safety relay and power 
contactors. 
Configuration 
Figure 13-1  Emergency stop shutdown to SIL 3 or PL e with a safety relay 










