Reaction Times And Safety Characteristics For Fail-Safe Operation - Siemens SIMATIC HMI Series Operating Instructions Manual

11.8.5

Reaction times and safety characteristics for fail-safe operation

This section applies to fail-safe operation with fail-safe Mobile Panels.
Note
Proof-test intervals
Proof-test interval of the device (Lifetime): 20 years. The device must be replaced after this,
at the latest.
Proof-test interval for safety-related operator controls dependent on the Safety Integrity Level
SIL:
• SIL2: Function test 1 × per year
• SIL3: Function test 1 × per month
Reaction times
The table shows below the reaction times of the HMI device up to the output of the
connection box, dependent on the F-system.
● For hardwired F-system: Reaction time of HMI device up to output or interface X10 of the
connection box.
● For a PROFIsafe-based F-system: Reaction time of HMI device up to interface X1 of the
connection box.
Reaction time
Emergency stop / stop button
Reaction time during
error-free operation
Reaction time with
error
Discrepancy time
Acknowledgment time in safety mode
Enable
Reaction time during
error-free operation
Reaction time with
error pending
Discrepancy time
Acknowledgment time in safety mode
Mobile Panels 2nd Generation
Operating Instructions, 09/2018, A5E33876626-AC
Operating mode
Press switch
Unlock switch
Discrepancy detected (safe state)
Critical internal error
No Enabling or Panic
Enabling
Discrepancy detected (safe state)
Critical internal error
Technical specifications
11.8 Technical specifications
Stop/E-stop button E-stop button
evaluated by safety
relay
< 10 ms
< 10 ms
See Safety relay
< 30 ms
See Safety relay
–
< 15 ms
< 40 ms
< 15 ms
< 30 ms
500 ms
-
evaluated by
PROFIsafe
< 15 ms
< 15 ms
< 15 ms
< 30 ms
500 ms
< 15 ms
< 15 ms
< 40 ms
< 15 ms
< 30 ms
500 ms
< 15 ms
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