VEGA VEGASWING 61 - two-wire - Manual (Page 22)

22
6 Setup
VEGASWING 61 • - two-wire
29227-EN-130409
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)
< 1.8 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
operating
condition
Note:
When used as overfill protection according to WHG and use in meas-
uring chains according IEC 61508, mode B is not permitted.
Test passed
•
Interference signal (< 3.6 mA) ≥ 400 ms
•
Uncovered (approx. 8 mA) ≥ 1 s
•
Covered (approx. 16 mA) ≥ 1 s
Test not passed
•
Interference signal (< 3.6 mA) < 400 ms / ≥ 750 ms
•
Uncovered (approx. 8 mA) < 1 s / ≥ 2 s
•
Covered (approx. 16 mA) < 1 s / ≥ 2 s
Test assessment (SPLC)
2) Starting time of the voltage supply