Siemens CS 275 manual Bus configurations, Bus configuration, examples

This catalog is out of date, see note on page 2

Design

Bus configurations

Bus configuration, examples

	Application	Other conditions	Cable connectors
20-m local bus	Small plants	Can only be used in instrumentation	N1 to N2,
	Max. 9 participants possible	rooms.	N2 to N3 etc.:	6DS8 201-8 . .
			Front plug on N1:	6DS9 200-8AA
	Max. 20 m bus cable	The guidelines for earthing and screen-
	Standard design redundant	ing must be observed for the partici-
		pants on the local bus.
		Ensure in particular that the partici-
		pants have the same ground potential
		(equipotential bonding, 0-V island).
		Exceptions are valid for isolated local
		bus interface modules N-AS and N-AT.
20-m local bus/4-km remote	Large plants	Max. 32 bus converters UI can be	N1 to UI:	6DS8 205-8 . .
bus	Max. 100 participants possible	used, power distribution subrack can	N1 to N2,
		be used for 2 bus converters UI.	N2 to N3 etc.:	6DS8 201-8 . .
	Max. 4 km remote bus cable
		The guidelines for earthing and screen-
		ing must be observed for the partici-
		pants on the local bus.
		Ensure in particular that the partici-
		pants have the same ground potential
		(equipotential bonding, 0-V island).
		Exceptions are valid for isolated local
		bus interface modules N-AS and N-AT.
20-m local bus/4-km remote	Large plants	Max. 32 bus converters UI can be	N1 to U/1 and UI2:	6DS8 204-8 . .
bus, redundant	Max. 100 participants possible	used, power distribution subrack can	N1 to N2,
		be used for 2 bus converters UI.	N2 to N3 etc.:	6DS8 201-8 . .
	Max. 4 km remote bus cable
		The guidelines for earthing and screen-
		ing must be observed for the partici-
		pants on the local bus.
		Ensure in particular that the partici-
		pants have the same ground potential
		(equipotential bonding, 0-V island).
		Exceptions are valid for isolated local
		bus interface modules N-AS and N-AT.
Individual participant on	Medium-sized plants	Interface module(s) for 20-m local bus	N to UI:	6DS8 205-8 . .
4-km remote bus	Individual participant on remote bus	and bus converter in same cabinet or
		subrack.
	(large distances between individual
	participants)	Power distribution subrack can be
	Max. peripheral configuration of	used for 2 bus converters UI per
		cabinet.
	connected AS systems
	Max. 32 participants possible
	Max. 4 km remote bus cable

Individual participant on	Medium-size plants	Interface module(s) for 20-m local bus	N to UI1 and UI2:	6DS8 204-8 . .
4-km remote bus, redundant	Individual participant on remote bus	and bus converter in same cabinet or
		subrack.
	(large distances between individual
	participants)	Power distribution subrack can be
	Max. peripheral configuration of	used for 2 bus converters UI per
		cabinet.
	connected AS systems
	Max. 32 participants possible
	Max. 4 km remote bus cable

AF	Connector board ”Remote bus”	N	Interface module for 20-m local bus
FB	Remote bus	UI	Inductive bus converter

3/6 Siemens PLT 130 . 1994