KROHNE OPTISWITCH 5xx0C NAMUR SIL EN - Manual (Page 7)

1 .3 Adjustment instructions
Since the plant conditions influence the safety of the measuring
system, the adjustment elements must be set according to the
application:
l
DIL switch for characteristics reversal
l DIL switch for sensitivity adjustment
The function of the adjustment elements is described in the operating
instructions manual.
1 .4 Setup
Take note of the mounting and installation instructions of the operating
instructions manual.
In the setup procedure, a check of the safety function by means of an
initial filling is recommended.
1 .5 Reaction during operation and in case of
failure
The adjustment elements or device parameters must not be modified
during operation.
If modifications have to be made during operation, carefully observe
the safety functions.
Fault signals that may appear are described in the appropriate
operating instructions manual.
If faults or error messages are detected, the entire measuring system
must be shut down and the process held in a safe state by other
measures.
An exchange of the electronics is easily possible and is described in
the operating instructions manual.
If due to a detected failure the electronics or the complete sensor is
exchanged, the manufacturer must be informed (incl. a fault
description).
1 .6 Recurring function test
The recurring function test is used to check the safety function, to
detect possible non-recognisable, dangerous faults. The function of
the measuring system must be checked in adequate intervals.
The operator is responsible for choosing the type of check. The time
intervals depend on the selected PFD
avg
value according to chart and
diagram in paragraph "Safety-related characteristics".
Adjustment elements
Mounting and installa-
tion
Reason and implemen-
tation
OPTISWITCH series 5000 • - NAMUR 7
1 Functional safety
32747
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EN
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100128