Function Chart - Vega VEGATOR 636 Ex Operating Instructions Manual

2 Simulation an empty signal (approx. 1.5 s)
Level relay energised
2 Simulation of an empty signal
Failure lamp
3 Simulation of a full signal (approx. 1.5 s)
Level relay deenergised
3 Simulation of a full signal
Failure lamp
4 Return to the current operating condition (covered/
uncovered)
Evaluation
VEGATOR 636 Ex • Signal conditioning instrument
A-mode
Relay control lamp lights
Failure lamp off
Relay control lamp off
Failure lamp off
Check the process of the function test. Take the following criteria into
account for evaluation of the result:
Test passed
If all three switching conditions occur in the correct sequence and the
specified duration (±20 %), then the test is passed and the instrument
functions correctly.
Test not passed
•
The specified times deviate considerably from the table (>3 s)
•
One of the switching conditions remains unchanged
•
No start-up of the test - no signal sequence
6.3

Function chart

The following chart provides an overview of the switching conditions
depending on the set mode and the level.
The mode switch on the sensor (if available) must be set to max.
operation.
Sensor (max. opera-
tion)
Mode on Level
the signal
condi-
tioning
instrument
Mode A
Overflow
protection
Mode A
Overflow
protection
Signal conditioning instrument
Signal Sig-
current - nal lamp
Sensor - Switch-
ing output
(yellow)
approx.
8 mA
approx.
16 mA
6 Setup
B-mode
Relay control lamp off
Failure lamp off
Relay control lamp lights
Failure lamp off
Con- Outputs
trol lamp
- Failure
(red)
Relay ener-
gized
transistor
conducts
Relay de-
energized
transistor
blocks
19