Honeywell SLG 700 User Manual page 66

Name (DTM/DD)
Sensor Critical Failure
Power Accumulator
Fault
Primary Variable Bad
Sensor Board Oscillator
Failure
Sensor Code Flow Fault
Sensor External Ram
Failure
Sensor Internal Ram
Failure
Sensor Flash CRC
Failure
Sensor in Factory Mode
Page 58
Description (Cause)
This is a roll-up status bit that is set
when any of the following critical status
conditions are present:

Power Accumulator Fault

Sensor Board Oscillator Failure

Sensor Code Flow Fault

Sensor External RAM Failure

Sensor Internal RAM Failure

Sensor Flash CRC Failure

Sensor in Test Mode

Sensor in Factory Mode

Sensor in Low Power Mode

Reference reflection not found

Sensor Power Supply 2.5V Fault

Sensor Power Supply 2.5V OSC
Fault

Sensor Power Supply 3.3V status
Fault

Sensor NVRAM corrupt
Power Accumulator board is damaged
or malfunctions.
The distance to interface or distance to
product used to derive the Primary
variable is in critical status, the reason
may be loss of echo peak.
If no power accumulator faults are
detected then most likely the sensor
board is damaged/defective.
The sensor is detecting that the time
between measurements has exceeded
the allowed limit.
Sensor board external RAM corruption
detected.
Sensor board internal RAM corruption
detected.
Sensor board firmware has been
corrupted.
Unit is in factory/test mode.
SLG 700 Series HART Option User's Manual
Resolution (Steps to take)
Refer to each condition later in this
table
Power-cycle the device and if problem
persists replace sensing housing... If
problem still persists replace the
terminal block assembly.
Read the Echo curve and check if
valid peaks are detected by device
and stem markers show valid peak
positions. If not configure the
correlation algorithm parameters for
each peak reflections. Ensure the
Dielectric constants configured are
valid for the vapor and products in the
tank.
Power cycle the device if problem
persists replace the Sensor housing.
Ensure configuration is correct and
restart the sensor. If problem persists,
replacement of the Sensor housing
may be necessary.
Power-cycle the device and see if the
condition re-occurs. If so,
replacement of the Sensor housing is
required.
Power-cycle the device and see if the
condition re-occurs. If so,
replacement of the Sensor housing is
required.
Attempt to reload the sensor
firmware. If problem persists after
flashing sensor firmware, replacement
of the Sensor housing is required.
Power-cycle the device and check if
problem re-occurs.
Revision 5