Endress+Hauser Liquiline M CM42, Руководство по функциональной безопасности

Страница: 35 / 72

Functional Safety Manual
for the Memosens transmitter Liquiline M CM42 SIL
Version: Page:
2.0 35 of 72
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16 0000010 pH value exceeds pH limits.
try changing sensor
17 0000011 Current output detected an invalid request.
contact E+H service.
18 0000012 Responses to current output module came too
slow/seldom.
contact E+H service.
19 0000013 SIL measurement mode aborted because classic error
active (if user has configured some).
see DIAG information for further steps
20 0000014 DAT module detected in SIL mode.
remove DAT module from system
4.6 Switch to SIL measurement mode
After entering SIL mode, in the Functional Safety menu the "SIL measurement mode
switch" appeared directly below the “SIL mode switch”. A SIL sensor has to be
connected to do this switch.
Please switch on the SIL measurement mode and check and confirm the values of
the sensor’s latest calibration (zero point, slope and sensor temperature adjustment).
It is necessary to document these values during calibration/adjustment and
compare them with the values given here . The software itself does not have the
possibility to check the "correctness".
Now the SIL measurement mode is finally started. The measured value is (safely)
delivered to the PCS and all safety diagnostics are running in the background.
If an error is detected (e.g. sensor disconnected) the system leaves the SIL measuring
mode and enters the "SIL mode – active safe state". The reason for the active safe state
is given in the display as a hexadecimal number (see 4.5).
The SIL measurement mode requires for certain settings which have to be set in case
the operator changed the default settings. If any for the SIL measurement mode relevant
condition is not fulfilled, a pop-up window will indicate this.
The conditions are the same as switching to SIL mode, but this time it is mandatory to
have a sensor connected.
The fastest way to default settings required for SIL measuring mode: Use factory
settings.