Alarm, error, and system messages
10.1 Alarm
SITRANS SL
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Operating Instructions, 12/2010, A5E01132948-04
LUI
The lower half of the measurement view (i.e. the standard view) of the LUI is designated for
the alarm display. Once an alarm has been triggered the alarm text is displayed together
with an icon. The icon indicates type and level of the alarm.
If several alarms are simultaneously active, the most serious alarm is displayed. To indicate
that there are more than one alarm active, the icons of for all active alarms appear
alternately but the displayed text always refers to the most serious alarm. To scroll through
the list of active alarms repeatedly press the key.
Start-up Failure
Relays are not activated until system has completed the start-up procedure, i.e. the alarms
go inactive when the system works properly.
When being operated via PROFIBUS or Modbus, the PLC will notice that the SITRANS SL is
missing on the bus if it does not start. In that case the PLC can generate an alarm.
States and Symbols
An alarm display on the LUI consists of a text and an icon to the left of the text. The icon
indicates type and level of an alarm.
Icon
Description
Maintenance fault
The device is in immediate need for maintenance. Measurement values cannot
be produced.
Example: Transmission too low for measurement due to contamination or
misalignment
Maintenance demanded
The device is in need for maintenance to assure continuous operation.
Measurement values are produced but may be uncertain.
Example: Transmission is low due to contamination or misalignment
Maintenance required
N/A
Process value fault
Measurement values cannot be produced due to a problem with one or more
process values.
Examples: Malfunction of an external sensor. A process value is outside the
limits of the compensation files.
Process value warning
Measurement values are produced but may be uncertain due to a problem with
one or several process values.
Example: A process value exceeds the specification of the device.
Process value tolerance
One or more process values have reached a tolerance limit.
Example: An external sensor reports an uncertain quality code.