Troubleshooting
Instruction Manual OilGuard 2 W
14809E/2
73
10.3
Fault messages and effect on operation
FAULT
If a fault occurs during operation, it has the following
effects:
A fault is a malfunction which prevents correct
measurement value acquisition.
The measuring values of the concerned photome-
ter go to
0
.
Assigned current outputs go to the programmed
electrical current
If fault
.
Assigned limits are deactivated.
When the
Fault
message appears,
the color of the
status display changes to
red
and the text de-
scribes the fault in question.
If an output for faults is programmed, it is
activated.
Example:
FAULT SERIAL 1
When the cause of the fault
has been remedied, it is automati-
cally deleted.
The following fault messages can be displayed:
FAULT MESSAGE
DESCRIPTION
POSSIBLE CAUSES
V ANALOG
One of the internal analog
voltages is outside the permit-
ted range.
Defect in the electronic system.
Service technician
MEASUR.FAULT
Measuring value acquisition is
faulty.
Bubbles in the water.
External light in the vicinity of
the measuring point (e.g.
transparent hoses).
Defect in the electronic system.
Service technician
AN.MEAS.FAULT
The measuring value acquisi-
tion of the analog channels is
disturbed.
Defect in the electronic system.
Service technician
LIGHTSOURCE 1
The detector for monitoring
the light source receives no
light from the corresponding
light source.
Defective light source.
Service technician
ANALOG IN 1/2
The input signal on analog in-
put 1 is less than the fault
limit.
There is no input signal.
POWER LINK
Actuation of the extended in-
puts/outputs via the Powerlink
is disturbed.
Interrupted connection to the
extended inputs/outputs.
IO PORT
The connection between the
NG_Haupt and AQ2Basi print
has been disturbed.
Cable disconnected.
Plug connection defective.
Table 4: Possible fault messages
