Final assembly
lectrical connection of the system components
6.3 Electrical connection of the system components
6.3.1 Layout of the network (wired via bus lines)
A cable as described in . . is to be used as a bus line. he po er supply and
the bus communication are provided via the same
»
he e
of the net or (net or topology). ree structures or series or star connec-
tions along
us subscribers can be branched off at any point on the bus line. erminating
resistors are not required.
Boundary conditions
– Number of all bus subscribers (
– us cable length bet een e
e
– otal of all cable lengths
he follo ing e ample sho s the procedure for determining the bus cable
lengths in order to chec the above mentioned boundary conditions.
3
Example:
Determining the bus cable length for
. hec ing the sections bet een e
e
ection
ection
ection
. hec ing the overall cable length
verall length
162
bserve the polarity
hen connecting the
LL bus system does not ma e any special demands on the structure
ith mi ed cabling formats are possible.
units per e
LL
LL cable bus e tender
m
,
m
2
BE-K
40 m
BE-K
50 m
LL
bus po er supply unit
m
m
m
m
m
m
m
m
ires.
,
)
ater management server
LL
bus po er supply unit and
1
BE-K
70 m
200 m
ig
Determining the bus cable length
subscribers (
LL cable bus e tender
m
m
m
m
m
core cable.
100 m
, cable bus e tender)
and
m
350 m
m
350 m
350 m
m
m
1,000 m