schmersal PSC1-C-10 Series, Руководство по установке

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Installation manual
PSC1-C-10 Installation manual V2.6 Page 119 of 173
Version: 57E
6 Response times of the PSC1
The response time is an important safety-related property and must be considered for each
application / safety function. In the following section the response times for individual functions, in
some case also as a function of other parameters, are listed. If this information is inadequate for a
specific application, the actual response is to be validated against the required behaviour by means of
specific measurements. This statement applies in particular also to the usage of filter functions.
Safety instructions:
•
The response times are to be defined for each safety function in the required behaviour and
compared against the actual value with the aid of the following information.
•
Particular care is required on the usage of filter functions. Depending on the filter length /
filter time, the response time may be significantly extended; this aspect must be taken into
account in the safety-related design.
•
In particularly critical tasks, the response is to be validated by means of measurements.
•
On device start-up / alarm or error reset, in some circumstances (depending on the application
program) the outputs may become active for the duration of the response time. This aspect
must be taken into account on planning the safety functions
•
On the usage of safe fieldbus connections (e.g. PROFIsafe, FSoE) the system propagation time
(watchdog) is to be included in the calculation.