Diagnostic Alarm Conditions - Vega FiberFlex LFXG-H Operating Instructions Manual

When a HART device initially connects to the gauge, any conditions in
alarm appear on the screen.

Diagnostic alarm conditions

Table 5.3
Diagnostic check
and Normal/Error
conditions
RAM Status – Pass/
Fail
Sensor EEPROM –
Pass/Fail
Real Time Clock
Status – Pass/Fail
Sensor Temp Probe
–
Pass/Fail
Source wipe due –
No/Yes
LFXG-H Installation and Operation Guide
HART message
Diagnostic description
RAM corrupt
RAM memory corruption
occurred and was resolved
internally. Repeated triggering
of this alarm suggests a
hardware problem.
Sensor EEPROM corrupt
A critical memory corruption
occurred on the sensor pre-
amp board EEPROM that may
not be resolved internally.
Real time clock fail
The clock failed. This can
cause a miscalculation of
timed events. (If the gauge
had no power for > 28 days,
reset the time and date.)
Sensor temp probe fail
The sensor temperature probe
may not be functioning, which
results in erroneous
measurements.
Source wipe due
Diagnostics and repair
Action
Consult VEGA Field
Service.
To check for
recurrence,
acknowledge the alarm.
Cycle power to the unit.
If the alarm recurs,
there is a hardware
problem. Perform the
procedure to repair the
corrupted EEPROM on
67.
Reset the time and
date. If they do not
reset, call VEGA Field
Service.
Verify the sensor
temperature on the
Gauge Info | Min/Max
History tab. If the
temperature reads -0.5
°C constantly, the probe
is broken and the sensor
assembly may need
replacement. Call VEGA
Field Service.
Acknowledge the alarm
by logging a shutter
check in the Source
Functions tab. See 90.
77