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Functional Safety KFD2-SH-Ex1(.T)(.OP), KHA6-SH-Ex1
Planning
3.3
Safety Function and Safe State
Safe State
The safe state of the outputs is the de-energized state. This state is reached when
the input is in low state.
Safety Function
K***-SH-Ex1
The devices have two outputs that can be used for the safety function. Output I is
a relay output with triplicated output relay, intended for use in applications up to
SIL 3 or PL d. Output II is an additional relay output that may by itself be used in
applications up to SIL 2.
KFD2-SH-Ex1.T(.OP)
The devices have two outputs that can be used for the safety function. Output I is
an electronic output that may be used in applications up to SIL 3 or PL d. Output II
may be used in applications up to SIL 2.
Line Fault Detection
The input circuit of all versions is supervised. The related safety function is
defined as the outputs are low/de-energized (safe state), if a line fault or a short
circuit of the sensor is detected.
Reaction Time
The reaction time for all safety functions is < 30 ms.
Note!
The fault indication output is not safety relevant.
