Switch To Non-Sil Mode; Error Conditions - Siemens SITRANS F Additional Operating Instructions

OPERATION
3

3.3 Switch to non-SIL mode

In order to switch the device from SIL mode to non-SIL mode the following steps have to be
performed.
• Remove the display (for details refer to [N1], chapter "Turning the display").
• Set the jumper to non-SIL position (for details refer to
page 13).
• Reattach the display.
• The flowmeter will perform an automatic reset.
• Confirm request "Press key for verification" by pressing any key.
• Refuse request "Set SIL jumper or press key to cancel" by pressing any key.
• Enter password for access level "Expert".
The device will now perform an automatic reboot and start operation in non-SIL mode.

3.4 Error conditions

In principle, the error conditions for non-SIL mode and SIL mode are the same (refer to chapter
"Status messages and diagnostic information" in N1]).
In SIL mode, the following special conditions apply additionally:
• Safety critical failures will always result in an output of a failure current.
• The failure current is the only safety relevant signal. Regarding the safe state of the device,
all other interfaces must be ignored (Example: a failure current indicates a safety critical
defect, even if the HART
• Due to power considerations, the lower failure current is the pre-defined failure current. The
related user's configuration in non-SIL mode is ignored in SIL mode. High failure current will
only be set if the lower failure current cannot be output for any reasons.
• The events shown in the following table are SIL specific, i. e. they will occur only if the device
is operated in SIL mode.
Status type Event group
F
16
®
interface is still online).
Description
Electronics Emergency off
triggered
www.siemens.com/flow
Preparation for SIL mode operation
Actions to eliminate the event
Restart the device according to given procedure
Resetting the fail-safe flags
(for details refer to
on page 23).
SITRANS FX330
on
10/2017 - A5E40875009-AB EN