Fail-safe operation of KP8F and KP32F
7.5 Response times of the PROFIsafe devices
KP8, KP8F, KP32F
100 Operating Instructions, 11/2011, A5E03284305-02
End passivation
When you have eliminated an error that lead to a passivation of the HMI device, you have to
reintegrate the HMI device. A user acknowledgement in the safety program may be required
for the reintegration of the HMI device. After reintegration, the pending process values at the
HMI device's fail-safe channels are provided again for the safety program.
More information about the reintegration of F-I/O and for creating a user acknowledgement
in the safety program can be found in the Programming and operation manual "S7
Distributed Safety - Configuring and Programming"
(http://support.automation.siemens.
com
/WW/view/en/22099875).
7.5 Response times of the PROFIsafe devices
Influencing the response time
The response time of the HMI device enters into the calculation of the response time of the
F-system.
● Response times of the fail-safe channels
The response time is the time that is required between a signal change on the digital
input and the safe loading of the safety message frame to PROFINET.
● Response time of the HMI device
The actual response time is somewhere between the shortest and longest response time.
When planning a system, the longest response time must always be anticipated.
Information about the response time can be found in the section "Technical specifications
(Page 107)".
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