4 Connecting the controller
© 2021 Interflex Datensysteme GmbH IF-4072 Controller 10
BUS 1+
BUS 1-
BUS 2-
BUS 2+
V-
V+
BUS 3+
BUS 3-
You can find further information on how to connect the bus data cables in the section IF-4072 controller
overview [}7].
Floating status contacts and relays
PAT
NO
NC
Cn
230 VRelays
Status contacts
GND
IN 1
IN 2
GND
IN 3
IN 4
An NO or an NC contact can be used for switching devices up to 30 V, 2 A. Outgoing cables can be
looped at the PAT terminals.