Vega VEGATOR 121 Operating Instructions Manual - page 14
14
6 Setup
VEGATOR 121 •
46107-EN-160912
the VEGATOR 121 displays a fault. A function test is only triggered by
pressing the test key. This function test is not carried out automatically
when switching on the VEGATOR 121.
Note:
When connecting sensors without this defined switching sequence,
the switch-on monitoring must be deactivated.
With these switches you can delay the changeover of the relays by
the set time. This can be useful, e.g. with fluctuating product surfaces,
for preventing unwanted switching commands. The switch-on/off
delays can be set independently of each other. If both switches, e.g.
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 signal condi-
tioning instrument accumulate.
When level switches VEGASWING/VEGAVIB/VEGAWAVE in two-wire
version are connected, a function test can be carried out. The test key
is recessed behind the front plate of the signal conditioning instru-
ment. Press the test key for at least two seconds with a suitable object
(screwdriver, pen, etc.).
By pushing the test key, the circuit to the sensor is interrupted and a
restart of the sensor is initiated. Through this, the conditions fault sig-
nal, empty and full alarm are simulated. The complete test procedure
takes approx. 5 seconds. After correct function, the red failure LED
should not light and depending on the status of the sensor, the relays
are energized or deenergized.
If the test result is negative, the red failure LED lights up and the
relays must be deenergized. In this case the whole measuring system
has to be checked and repaired.
Note:
Keep in mind that downstream connected devices are activated dur-
ing the function test. This allows you to check the correct function of
the measuring system.
6.3 Automatic function test
As an alternative to the manual test via test key, the function test can
be also carried out automatically. For this purpose, the VEGATOR 121
with optional fail safe relay as well as a PLC are required. The follow-
ing setup is necessary:
Switch-on/Switch-off
delay
Test key