KROHNE OPTISWITCH 3100C Contactless EN - Manual (Page 18)

the electronics would be destroyed if connected directly to the
mains. It is not suitable for connection to low voltage PLC
inputs.
Domestic current is temporarily lowered below 1 mA after
switching off the load so that contactors, whose holding current
is lower than the constant domestic current of the electronics,
are reliably switched off.
1
Fig. 11: Wiring plan
1 Screen
18 OPTISWITCH 3100 C - with contactless electronic switch
Connecting to voltage supply
29952
-EN
-060830