Honeywell SLG 700 Option Manual page 194

Problem cause
Sensor Board Fault
Communication
Board Fault
Sensor
Communication
Fault
Characterization
data or Calibration
data corrupt
Sensor and
Communication
Board Database
CRC Mismatch
Sensor and
Communication
Board Database
version Mismatch
Sensor Board Over
Temperature
Communication
Board Over
Temperature
PV out of Range
Page 178
Things to check
Check Sensor Detailed
Diagnostics to know the
reason of Sensor Board Fault.
If any of the critical
diagnostics bit except probe
missing is set it will set Field
Diagnostic bit of Sensor Fault
This fault is set if operating
voltage is not with in limit (9 to
32 V) or RAM or FLASH
failure.
There is no response from
sensor
Characterization of Sensor or
Calibration data of sensor is
corrupted.
There may be impact on the
accuracy of measurement.
This fault is set if
configuration parameters
used by sensor and stored in
the communication board
EEPROM differs.
This fault is set if
configuration parameters
database version used by
sensor differs from
communication board
EEPROM database.
Sensor housing temperature
is too high. Accuracy and life
span may decrease if it
remains high.
Communication Board
temperature is too high. Life
span may decrease if it
remains high.
Sensor Overload/Sensor
Fault
Redundant Characterization
Calculation Error
Calculated level is above
Upper Transducer Limit
(UTL).
FOUNDATION Fieldbus Option User's Guide
Recommended action
Restart of Device is required. If error
persists change the Sensor housing of the
Device or Device.
Restart of Device is required if error
persists change the communication Module
of the device or Device.
Restart of Device is required. If this does
not fix the problem, replace the sensor
module.
Restart of Device is required. If this does
not fix the problem, re-characterization or
re-calibration of device is required to
improve the accuracy.
Restart of Device required. If error persists
try replacing the Electronics module. If this
does not fix the problem, replace the
sensor module.
Upgrade firmware, either communication
module or sensor module is required.
Verify the environment temperature is
within specification. Take steps to insulate
Sensor housing from temperature source
Verify the environment temperature is
within specification. Take steps to insulate
communication module from temperature
source
Check level is within range and outside
blocking distance range, replace transmitter
with one that has a wider range. Sensor
housing may have been damaged. Check
the transmitter is outside the entered range
for accuracy and linearity. Replace Sensor
housing and recalibrate if needed.
Rev. 3.0