VEGA VEGAWAVE 61 - two-wire - Manual (Page 25)

signal conditioning instrument). Keep in mind that connected instru-
ments are activated during the function test. By doing this, you can
check the correct function of the measuring system.
Note:
Keep in mind that the starting time t
A
of the voltage supply can extend
the time up to the first switching (e.g. VEGATOR 636: +1 s)
After releasing the button or after a brief line break.
The specified times apply with a tolerance of ±20 %.
Sensor
current -
Sensor Level relay
A - overfill
protection Signal
lamp A -
Overfill
protection Level relay
B - dry run
protection Signal
lamp B -
Dry run
protection Fail safe
relay Control
lamp
1. Fault sig-
nal
approx. 0.6 s
+
t
A
2)
< 2 mA currentless currentless currentless
2. Empty
signal
(approx.
1.5 s) approx.
8 mA energized currentless energized
3. Full signal
(approx.
1.5 s) approx.
16 mA currentless energized energized
4. Return to
current ope-
rating condi-
tion
Note:
When used in measuring chains according to IEC 61508, mode B is
not permitted.
Test passed
l Interference signal (< 3.6 mA) ≥ 400 ms
l Uncovered (approx. 8 mA) ≥ 1 s
l Covered (approx. 16 mA) ≥ 1 s
2) Starting time of the voltage supply
Test procedure
Test assessment (SPLC)
VEGAWAVE 61 • - two-wire 25
6 Set up
32250
-
EN
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