KROHNE OPTISWITCH 3000C Relay EN - Manual (Page 18)

acc. to the "Function chart" (max. - max. detection or overfill
protection, min. - min. detection or dry run protection).
We recommend connecting according to the quiescent current
principle (replay contact deenergizes when reaching the
switching point), because the relay takes on the same (safe)
condition if a failure is detected.
Control lamp for indication of the switching condition.
l
green = relay energized
l red = relay deenergized
l
red (flashing) = failure
6.3 Function chart
The following chart provides an overview of the switching
conditions depending on the adjusted mode and level.
Level Switching sta-
tus
Control lamp
Mode max.
Overfill protection
5 3 4
(8) (6) (7)
Relay energized Green
Mode max.
Overfill protection
5 3 4
(8) (6) (7)
Relay deener-
gized
red
Mode min.
Dry run protection
5 3 4
(8) (6) (7)
Relay energized Green
Mode min.
Dry run protection
5 3 4
(8) (6) (7)
Relay deener-
gized
red
Signal lamp (4)
18 OPTISWITCH 3000 C - with relay output
Set up
30059
-EN
-060830