ABB LS4000 Operating Instructions Manual page 207

Error code
17
21
22
24
25
26
27
30
LS4000, LS4060 DIODE LASER ANALYZERS | OI/LS4000/O2-EN REV. A
Meaning and cause
LINE TRACKING FAILURE
The analyzer has detected a spec-
troscopy error with one of the follow-
ing causes:
 Unknown process gas in process
 Incorrect wavelength
 The operating temperature of the
transmitter unit is outside the
permitted range
 Analyzer malfunction
RX WRITE FAIL
Data transmission between the
transmitter unit and receiver unit is
interrupted.
RX READ FAIL
Data transmission between the
transmitter unit and receiver unit is
interrupted.
TX FIRMWARE TOO OLD
The transmitter unit has an earlier
version of the firmware that is not
compatible with the instrument
software.
TX FIRMWARE TOO NEW
The transmitter unit has a later ver-
sion of the firmware that is not com-
patible with the instrument software.
RX FIRMWARE TOO OLD
The receiver unit has an earlier ver-
sion of the firmware that is not com-
patible with the instrument software.
RX FIRMWARE TOO NEW
The receiver unit has a later version
of the firmware that is not compati-
ble with the instrument software.
DMA RAMP TRANSFER
Data transmission between the
transmitter unit and receiver unit is
interrupted.
How to resolve the error
 Disconnect the analyzer from the
supply voltage. Apply test gas (in
the process or in a validation cell).
For the test gas, use a gas mixture
that contains the measured com-
ponent in a concentration suitable
for generating a significant
change in the measured value dis-
play. Initialize the analyzer.
 If the error message occurs again,
contact the authorized service
personnel.
 Check and repair the electrical
connection between the transmit-
ter unit and receiver unit
 Check and repair the electrical
connection between the transmit-
ter unit and receiver unit
 Contact the authorized service
personnel.
 Contact the authorized service
personnel.
 Contact the authorized service
personnel.
 Contact the authorized service
personnel.
 Check and repair the electrical
connection between the transmit-
ter unit and receiver unit
207