2018-08
12
Functional Safety KCD2-STC-(Ex)1(.SP)(-Y1), HiC2025(Y1)
Planning
3.3 Safety Function and Safe State
Safety Function
The device transfers analog signals from the input to the output with a tolerance of 2 % related
to the full signal range.
Use the following DIP switch settings for safety-relevant applications:
DIP Switch Settings KCD2-STC-(Ex)1(.SP)(-Y1)
DIP Switch Settings HiC2025(Y1)
Safe State
In the safe state, the following values must be reached at the output:
• < 3.6 mA or > 21.5 mA,
• < 0.9 V or > 5.375 V,
Reaction Time
The reaction time for all safety functions is < 20 ms.
Function S1 S2 S3 S4
Current source 4 mA to 20 mA II II I II
Voltage source 1 V to 5 V II II I I
Current sink 4 mA to 20 mA II I II II
Table 3.1
Function S1 S2 S3 S4
Current source 4 mA to 20 mA OFF OFF ON OFF
Voltage source 1 V to 5 V OFF OFF ON ON
Current sink 4 mA to 20 mA OFF ON OFF OFF
Table 3.2
Note!
See corresponding datasheets for further information.
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