Honeywell STT700 STT700, User Manual

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Page 6 STT700 Temperature Transmitter
User’s Manual
Revision 1
Table 3
– STT700 Diagnostic Messages
Critical Diagnostics (Failure
Conditions)
Description Details
Elec. Mod. Diag Failure
Diagnostics failure (like
ROM / RAM corrupt
etc.)
Action: Reset the device. If the problem persists
replace the electronics module Note: Select
“Device Status - Additional Status” to see which
of these conditions are set.
Elec. Mod. DAC Failure
Failure related to DAC
which regulates 4-20mA
loop
Action: Reset the device. If problem persist,
replace the electronics module.
N
ote: Select “Device Status - Additional Status”
to see which of these conditions are set.
Sensor Input Failure
Input sensor may be
open / short / out of
range
"Failure in sensing section. Any of the following
conditions can cause this failure:
1..Input 1 Fault
2. Input 2 Fault.
Check the sensor input connections.
3. Suspect Input.
Check sensor and connections. If the
connections are ok, and problem persists,
replace the electronics module board
Note: Select
“Device Status - Additional Status”
to see which of these conditions are set
Char/Cal Data Corrupt
Factory calibration data
is corrupted
Characterization / Calibration data is corrupted
or missing.
Replace device if error persists upon power
cycle
Config Data corrupt
NVM data corrupted
Action: Power cycle the device. If the problem
persists, replace the electronics module.
Table 4
– STT700 Standard Non-Critical Diagnostics Messages
Non-Critical Diagnostics
(Warning Conditions)
Description Details
CT Out of Range
MCU temperature of the
device is out of range
Core Temperature out of range (-36°C to
112.5°C).
If it is certain that the reading is in error, then
contact the vendor.
No Factory Calibration Factory calibration data is
not available, device is not
factory calibrated
The transmitter has not been calibrated by the
factory. Contact the vendor.
PV Out of Range
Process value measured is
out of range
Loop PV is out of configured URV and LRV.
Check your process temperature. Adapt the
span.
Check range and, if required, replace
transmitter with one that has a wider range.
CJ Out of Limits SV Bad
Cold junction sensor
temperature or device
terminal temperature is out
of limits (-40°C to 85°C is
the range) The ambient temperature measured is out of
the transmitter specifications
(-40°C to 85°C).
Take steps to isolate the device from the
temperature source.