20
6 Setup
VEGATOR 142 •
46839-EN-190626
3. Set both potentiometers to the left end position, the two yellow
LED displays light
4. Fill the vessel up to the requested lower switching point
5. Set the potentiometer "
CH1
" to the right end position, turn the
potentiometer "
CH2
" slowly anticlockwise until the two yellow
LED displays extinguish
6. Fill the vessel up to the requested upper switching point
7. Turn the potentiometer "
CH1
" slowly anticlockwise until the two
yellow LED displays light, the controller is now ready for operation
6.6 Proof test
Note:
When handling environmentally hazardous substances, danger to the
environment and to persons must be avoided. After setup, the proper
functioning of the instrument must be ensured by means of the proof
test described below.
•
Detection of line break:
Disconnect the sensor cable for the
duration of this test
– The red fault LED must light up
–
The relay must be deenergized
•
Detection of short-circuit:
Short-circuit the sensor cable for the
duration of this test
– The red fault LED must light up
–
The relay must be deenergized
•
Switching point monitoring (overflow protection): Fill the ves-
sel up to the set switching point
– When the switching point is reached, the respective relay must
deenergize
•
Switching point monitoring (dry run protection):
Empty the
vessel down to the set switching point
– When the switching point is reached, the respective relay must
deenergize
6.7 Function diagram
The following diagram provides an overview of the switching statuses
depending on the set mode and the level.
Note:
Selection of the mode on the controller only functions correctly if the
4 … 20 mA characteristics are set in the sensor.
Содержание VEGATOR 142
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