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

required mode 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 (transistor blocks when the switching point is
reached) because the transistor output takes on the same
(safe) condition if a failure is detected.
Control lamp for indication of the switching condition.
l green = output conducts
l
red = output blocks
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
transistor con-
ducts
Green
Mode max.
Overfill protection
transistor blocks
red
Mode min.
Dry run protection
transistor con-
ducts
Green
Mode min.
Dry run protection
transistor blocks
red
Failure of the
supply voltage
(min./max. mode)
any transistor blocks
Signal lamp (4)
18 OPTISWITCH 3000 C - with transistor output
Set up
30060
-EN
-060830