Flygt CAS Montage Und Service Seite 5

Channel B, oil pressure
(or liquid level)
This channel with RUN connected to a normally open
contact is to be used to monitor the oil pressure in
machines equipped with a gear unit. On machines
without a gear unit, the channel can be used in the
same manner as channel A, provided that RUN is not
connected.
Input indication
The pilot lamp 52 is lit to indicate interruption or
shortcircuit. If the channel is not used (machines
without a gear unit) the pilot lamp will always light.
Alarm
After an alarm from the sensor for about 5 seconds,
the alarm function B is activated, the pilot lamp 54 is
Σ
lit, the -alarm function is activated, the pilot lamp 57
is lit and the interlock (terminals 11 and 12) drops,
whereby the pump/turbine is disconnected and the
pilot lamp 59 will go out.
Reset
Resetting can only be done manually.
Channel C, temperature
monitoring
This channel is intended to monitor the stator's
temperature with thermal switches or up to 3 PTC
thermistors. The thermal switches are normally closed
but they open at 140°C ± 5°C (284°F).
Alarm
When the resistance exceeds 3 kΩ, the alarm function
C is activated, the pilot lamp 55 is lit, the
function is activated, the pilot 57 is lit and the interlock
(terminals 11 and 12) drops, whereby the pump/
turbine is disconnected and the pilot lamp 59 is put
out.
Reset
Resetting can only be done manually and only when
the resistance has fallen to about 900 Ω, i.e. the stator
has cooled down.
Channel D, Pt 100 sensor
This channel is used for monitoring and analog
indication of the temperature of the main (lower)
bearing. The channel can only be connected to a
temperature sensor of type Pt-100 (DIN 437 60).
The alarm value can be set by potentiometer 60
(see "Fault tracing"). The unit is delivered set to an
alarm value of 100°C (212°F).
Indicator instrument
(extra equipment)
The channel has an output for analog reading of the
bearing temperature. An indicator instrument can be
connected to terminals 31 and 32 (NOTE! Correct
polarity ±). The instrument shows the Pt-100 sensor's
temperature. If switch 58 is depressed, the instrument
shows the set alarm value.
Alarm
When the alarm value is reached, the alarm function
is activated, the pilot lamp 56 is lit and the
function is activated. The pilot lamp 57 is lit and the
interlock (terminals 11 and 12) drops, whereby the
pump/turbine is disconnected and the pilot lamp 59
will go out.
Reset
Resetting can only be done manually.
Σ
-alarm
5
Σ
-alarm