Fault Finding And Repair - Endress+Hauser RIA 450 Manual De Instrucciones

Process display

7. Fault finding and repair

During production all units undergo a number of quality control
stages. In order to assist you in fault finding we have listed a
number of possible faults, causes and cures.
Process display system fault messages
Faults that could occur during the self test are displayed in the
7 segment display as a 4 digit error code.
The error code only appears after the self test, after switching
the unit on. The message remains in the display until one of the
push buttons has been operated.
Error
code
0001
0002
0003
0004
0005
0007
0008
56
Cause
Invalid recognition in
EEPROM. Possible cause is a
power failure during a
parameter save procedure.
Checksum of operating
parameters is invalid or the
software version in the
EPROM does not correspond
with the EEPROM. Possible
cause is a power failure during
a parameter save procedure.
Checksum for the calibration
values EEPROM is faulty.
Possible cause is a power
failure during calibration, an
uncalibrated unit or a defective
calibration EEPROM
The calibration values of at
least one input range are not
plausible. Possible cause is a
partly calibrated unit.
A calibration EEPROM was
not found. Cause is a
hardware fault.
A save was not done in the
unit. Cause is a software fault.
Selected measurement range
is invalid.
Cure
The recognition in the
EEPROM is repaired by
acknowledging using the "E"
push button.
A PRESET is automatically
initiated by operating the "E"
push button. This means all
parameters are returned to
default. The fault is no longer
displayed once the unit has
been switched ON/Off.
Please return the unit for
repair.
Please return the unit for
repair.
Please return the unit for
repair.
Please return the unit for
repair.
The parameter RANG is set
to 4-20 mA after acknowledge
with "E".