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4.5 Examples of applications
Safe OPENING of a pressure vessel using the Safe ESD function
The standard PLC controls the entire system. A system fault occurs if excessive pressure is
generated within the system. In this case, the safety PLC immediately opens the valve for
safe pressure relief.
Figure 5: Application example: Pressure vessel
Safe stop of locks to prevent destruction using the Safe STOP function.
Operation safety (preventing hazards to persons and systems) is of utmost importance for
locks. Once the lock closes, no boats must be between the gates. Otherwise, the Safe STOP
function (e.g. via EMERGENCY Stop button) is executed.
Figure 6: Application example: Lock
Multi-turn actuators
SA series with Control 3.XX /NI/SIL
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