AO2000-LS25
LASER ANALYZERS | OI/AO2000-LS25-EN REV. D
71
Fault message
Explanations and actions
Troubleshooting instructions
Low laser temp.
High laser temp.
ERROR
The laser temperature regulation has failed and the laser is too cold/warm.
The instrument has entered FAULT mode and attempts automatic restart after
one hour.
Allow the transmitter unit to cool.
Improve ventilation, provide heat shielding if
necessary.
If transmitter is not overheated, the error might
indicate a bad electrical contact or other hardware
failure.
If the error persists, contact ABB Service.
Low box temp.
High box temp.
ERROR
Internal temperature of transmitter or receiver is exceeding the operating limit.
The instrument has entered FAULT mode and attempts automatic restart after
one hour.
Check the ambient temperature of the transmitter
and receiver units.
Improve ventilation, provide heat shielding if
necessary.
If the error persists, contact ABB Service.
EEPROM error
ERROR
Failure of the internal memory of the device.
Upload a backup settings file (with the original
settings) to the device.
If the error persists, contact ABB Service.
Self-test fail
ERROR
The device has detected a self-test error during start-up.
Restart the device.
If the error persists, note the messages on the
LCD, download the error record and system log
and contact ABB Service.
Low line position
High line position
No absorption line
ERROR
The device has detected a spectroscopic fault. This can have several causes:
Unknown interference gas in process, incorrect laser temperature (wavelength),
transmitter unit is operating outside acceptable temperature range, or laser
malfunction.
Check the device with the calibration cell with a
gas concentration suitable for calibration, run the
device continuously for more than 70 minutes.
If the error persists or if the calibration is
significantly incorrect, contact ABB Service.
Saturation of direct
ERROR
The photodetector is saturating or transmission is > 130%.
If the error remains when the receiver window is obscured, this is an electronic
fault. Otherwise the error may occur after replacement of laser module or receiver
electronics.
Reduce receiver amplification (if possible) or
transmission.
If the error persists, contact ABB Service.
Saturation of harm.
ERROR
A second harmonic signal is saturating. This may be for one of the following
reasons:
The gas concentration is too high or the length of the optical path for
measurement is too long.
Reduce the amplification for the second harmonic
signal in the receiver (contact service personnel for
details), or use a shorter measurement length for
high
gas concentrations.
If the error remains when the receiver window is
obscured, this is an electronic fault.
Contact ABB Service.
All other error messages
–
Note all LCD messages and contact ABB Service.
