16
6 Setup
VEGATOR 142 •
46839-EN-190626
of the switch-on delay, are activated, the times sum up. Delays of 2, 6
or 8 seconds can thus be adjusted.
Information:
Keep in mind that the switching delay of the sensor and controller
accumulate.
The following functionalities can be selected via this switch:
•
Single point control (double channel level detection with one sen-
sor each and the same switch on/switch off point)
•
Two-point control (level detection with one sensor and different
switch on/switch off points)
As opposed to single point control, two-point control allows the
switch-on and switch-off points to be set at different locations (hyster
-
esis). For this purpose, a continuously measuring sensor is connected
to channel 1, the second channel remains free.
The relay switching point is adjusted via a potentiometer. You can find
a detailed description depending on the mode and the installed sen-
sors in the following chapters.
6.3 Switching point adjustment, single-point
control with 4 … 20 mA sensor (continuous)
When using a continuously measuring 4 … 20 mA sensor, the switch-
ing point can be set to any position between 0 … 100 %.
Fig. 5: Application examples with 4 … 20 mA sensor (pressure transmitter or
capacitive rod probe)
Depending on the mode you now adjust the switching point as de-
scribed in the following.
1. Make sure that switches 1 and 7 on the DIL switch block are set
to "
max.
" and switch 6 to "
Single-point control
". The switches
for the switch-on and switch-off delay should be set to "
0 s
".
2. Set the potentiometer "
CH1
" to the right end position, the yellow
LED display lights
3. Fill the vessel up to the requested max. level
4. Turn the potentiometer slowly anticlockwise until the yellow LED
display extinguishes
Single-point control/Two-
point control
Potentiometer for switch-
ing point adjustment
Overflow protection (max.
operation)