VEGA VEGAVIB 55 - NAMUR - Manual (Page 19)

The NAMUR output can be switched over to falling or rising
characteristics (see also "Function chart").
The simulation key is located in a recess on the upper side of
the oscillator. Push the simulation key with a suitable object
(screwdriver, pen, etc.).
When the key is pushed, a line break between sensor and
processing unit is simulated. The signal lamp on the sensor
extinguishes. The measuring system must signal a fault and
take on a safe condition when the key is pushed.
Keep in mind that the connected instruments will be activated
during operation. This allows you to check the correct function
of the measuring system.
Control lamp (LED) for indication of the switching status.
l
yellow = High current >=2.2 mA
l
dark = Low current <=1 mA
l yellow (flashing) = Failure <=1 mA
6.3 Function chart
VEGAVIB 55 level switch
The following chart provides an overview of the switching
conditions depending on the adjusted mode and level.
Note:
The mode setting on the NAMUR amplifier must be selected in
such a way that the switching output takes on safe condition in
case of failure (I <=1 mA).
Level Signal current -
Sensor
Control lamp
Falling characteris-
tics max.
>=2.2 mA
Falling characteris-
tics max.
<=1 mA
Simulation key (2)
Signal lamp (5)
VEGAVIB 55 - - NAMUR 19
Setup
31214
-EN
-070109