166
EL3000
CONTINUOUS GAS ANALYZERS | OI/EL3000-EN REV. D
… 12 Diagnosis / Troubleshooting
Status messages – Explanations
Status Signals
The status messages (see
page 168) set the ‘Failure’, ‘Maintenance required’, ‘Function
control’ as well as ‘Total status’ status signals.
The assignment of the status signals to the digital outputs can
be configured (see
Configuring signal inputs and outputs
page 152).
Status message
Description
Failure
The analyzer is in a state that requires immediate
user intervention. The measured value is invalid.
Maintenance required
The analyzer is in a state that will soon require
user intervention. The measured value is valid.
Check function
A calibration is performed on the gas analyzer or
the maintenance switch is on. The measured
value is not a process measured value and is to be
discarded.
Overall status
The overall status is always set together with the
‘Failure’ status, as well as for individual messages,
together with the ‘Maintenance required’ status,
and is not set together with the ‘Function check’
status.
Status Icons
Icon
Description
An automatic calibration (see page 118) is in progress.
The icon also appears in menu mode in the menu title line (see
page 108).
A status message (see page 168) is active.
The status signal (see page 166) ‘Maintenance required’ is
active.
The icon also appears in menu mode in the menu title line (see
page 108).
The status signal ‘Failure’ is active (page 166) or the
maintenance switch (page 178) is set to ‘On’.
The icon is flashing. The icon also appears in menu mode in the
menu title line (page 108).
The configuration has been saved. The icon is flashing.
Do not turn off the power supply of the gas analyzer while the
icon is displayed!
Status Message Categories
In terms of operator reaction, there are three categories of
status messages:
• Status messages not requiring acknowledgment,
• Status messages requiring acknowledgment,
• Status messages requiring acknowledgment and
troubleshooting.
Category
Description
Status Messages Not
Requiring
Acknowledgement
The device operates normally after the status has
been cleared. When the status is cleared, the
status signal is reset and the status message
disappears.
Example:
Temperature error during the warm-up phase.
Status Messages Requiring
Acknowledgment
The instrument operates normally after the
status has been cleared; however, the operator
must be informed of the status.
When the status is cleared, the status signal is
reset. The status message disappears as soon as
the operator has acknowledged it. The operator is
thus informed about the malfunction of the
instrument.
Example:
No new measured values from the analog/digital
converter.
Status Messages Requiring
Acknowledgment and
Intervention
The device may not operate normally after the
status has been cleared; the operator must
therefore acknowledge the status and eliminate
the cause of the status message. The status
signal is reset and the status message disappears
as soon as the operator has acknowledged it, and
the cause of the status message has been
eliminated.
Example:
The offset drift between two calibrations exceeds
the permissible range.
