Safety Function And Safe State - Pepperl+Fuchs HiD2024 Manual

Functional Safety HiD2024
Planning
3.3

Safety Function and Safe State

Safe State
The safe state depends on the respective application.
Mostly a value within the signal range is defined, below which (low limit value) or
above which (high limit value) the safe state is initiated.
As this individual limit value and this direction are not known to Pepperl+Fuchs, a
discrepancy of more than 2 % in the signal path is as worst case rated dangerous
undetected. Furthermore, the output values below 3.6 mA or above 21.5 mA
indicate failures that are considered as dangerous detected.
Ensure that the programmable controller is programmed to react to these values
suitably.
Safety Function
The device transfers an analog signal from the input to the output with a tolerance
of 2 % of the measured range.
You have the possibility for each channel to define different functions to fit your
safety application.
DIP Switch Settings
Function
Analog input with source output 4 mA ... 20 mA
Analog input with source output 1 V ... 5 V
Analog input with sink output 4 mA ... 20 mA
Analog output
Table 3.1
Potentiometer Settings
You can adjust the signal transfer accuracy via the potentiometers.
Reaction Time
The reaction time for all safety functions is < 100 ms.
Note!
For more information see the corresponding datasheets.
10
Switch settings
S1 S2 S3
OFF OFF OFF
OFF ON OFF
OFF OFF ON
ON OFF ON
S4
ON
ON
OFF
OFF