KROHNE OPTISWITCH 3000C Transistor EN - Manual (Page 15)

We recommend connecting OPTISWITCH 3000 C in such a
way that the switching circuit is open when there is a level
signal, line break or failure (safe condition).
The instrument is used to control relays, contactors, magnet
valves, warning lights, horns as well as PLC inputs.
1
Fig. 9: Wiring plan
+ -
+ -
Fig. 10: NPN action
Wiring plan
OPTISWITCH 3000 C - with transistor output 15
Connecting to voltage supply
30060
-EN
-060830