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Appendix A ________________________________________________ Values for Internal Monitoring
Status Message Typical
TS
-40 °C...
Temperature
+50 °C
sensor.
Ambient
temperature
TB
Temperature of
Some
the CPU board
degrees
higher
than
ambient
temp.
SIGNAL
Frequency of the
0.00
transmission
Hz....
signal between
10000.00
transducer and
Hz
CPU (Hz),
inversely
proportional to
visibility
VBB
Raw, unregulated
12V...
voltage in the
13V
internal
transformer
output
VAISALA _______________________________________________________________________ 113
Min. / Max.
Fault
-75°C / +98°C 'TS SENSOR
ERROR'
(Measurement
value under
-75°C)
'TS SENSOR
ERROR'
(Measurement
value over
+98°C)
-
'SIGNAL
ERROR'
Signal
frequency plus
offset frequency
= 0
or
Signal
frequency
minus offset
frequency < -1
12 V / 15 V
<12 V
>15 V
Description
Action
Sensor or cable
Check the
short-circuits.
temperature
sensor cable
on control
unit.
Resistance of
Pt-100 should
be
80Ω...130Ω.
Sensor
Check X4
disconnected or
connection on
bad connection.
control unit.
Resistance of
Pt-100 should
be
80Ω...130Ω.
-
-
Interference with
Make sure
other sensor of the
that the
same kind.
device does
not receive
Suddenly
reflections or
increased noise
scattering
level.
from other
sensors. Aim
Failure in receiver
the receiver
circuitry.
away from
high intensity
light sources.
Change
PWC22.
Switched-mode
1) Reset
power supply is
2) Check
overloaded or
connectors
working wrong.
and cable
VBB measurement
3) Change the
may also fail due
control unit
to heavy
PWC22
electrostatic
discharge to
®
RAINCAP
plate.
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Troubleshooting
