Interpreting Messages; Table 51 Diagnostic Message Interpretation Table - Honeywell ST 3000 User Manual

Interpreting Messages

Most of the diagnostic messages that can be displayed on the communicator are listed in alphabetical order
in Table 51 along with a description and suggested action to be taken.
Message
Char PROM Fault
Corrects Reset
DAC Diode Fault
Device Disconnected
Electronic Fault
Excess Span Corr
Excess Zero Corr
In multidrop mode
In Output Mode
10/05

Table 51 Diagnostic Message Interpretation Table

Possible Cause
Characterization PROM is not
functioning correctly.
All calibration "CORRECTS"
were deleted and data was
reset to default values.
Digital to Analog Converter
(DAC) fault.
Previously established
communication with a
transmitter has been lost. Could
be a transmitter or loop failure.
Electronics module is not
functioning properly.
SPAN correction factor is
outside acceptable limits. Could
be that transmitter was in output
mode.
ZERO correction factor is
outside acceptable limits. Could
be that INPUT was incorrect or
transmitter was in output mode
during a CORRECT procedure.
The transmitter poll address is
not 0 (zero). You have tried to
change the analog output of a
transmitter that is in multidrop
mode.
Transmitter is operating as a
current source.
ST 3000 HART Transmitter Release 300 User Manual
11— Troubleshooting - Interpreting Messages
What to Do
Replace meter body.
Recalibrate transmitter.
See Section 10.
Replace electronics module (PWA).
• Try communicating again.
• Check that transmitter's loop
integrity has been maintained,
that communicator is connected
properly, and that loop
resistance is at least 250Ω.
Replace electronics module. Do not
SAVE data.
• Check input pressure and be
sure that it matches calibrated
range value.
• Check meter body.
• Do a URV CORRECT
procedure.
• Check input pressure and be
sure that it matches calibrated
range value.
Check meter body.
•
• Do an LRV CORRECT
procedure.
Change "HART mode" of
transmitter to analog by changing
poll address to 0.
Exit output mode (Loop test)-.
Perform Master reset, (or cycle
power).
Table continued on next page ⇒
116