Response Times - Siemens SIRIUS 3SK1 Manual

Configuration / operation

10.4 Response times

Safety mode (DEVICE LED: green)
In safety mode, all monitoring functions are active in accordance with the set configuration.
Note
Parameterized startup testing is indicated by a green flashing "DEVICE" LED. Only when
this has been successfully executed does the "DEVICE" LED show a green light.
Error mode
Error mode is indicated by a red "DEVICE" LED or by a red "SF" LED. In error mode, the
device ALWAYS changes to the safe state.
10.4 Response times
10.4.1 Response times
Verification of response times in the case of safety circuits
When safety equipment is commissioned, steps must be taken to verify that a safety-related
output will switch off within a maximum permissible response time if the input signal changes
at the relevant input.
To provide this verification, you must determine the total response time of the application you
have configured.
Note
Note that the calculation of the response time affects the level of safety and governs the
overall design of the system.
You can find the response data of the safety relays in the technical data of the respective
devices in the chapter Technical data (Page 193).
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Manual, 04/2013, A5E02526190021A/RS-AA/01
3SK1 safety relays