E3I040 I-Bus/LON module
115
Building Technologies
001260_k_en_--.doc
Fire Safety & Security Products
02.2005
28.4 Wiring
principle
28.4.1 LON-Bus as stub line
Max. length of LON-Bus
as stub line: 1000m
I-Bus
E3I040
LON-Bus
K3I050
B3Q580
E3X10. /
B3Q...
24VDC
B3Q590/
595
K3I110
R60 = 100
Ω
(EOL)
remove R1
remove R1
remove R1
R1=100
Ω
(EOL)
max.
32
LON-Bus
devices
The EOL resistors R1 (100
Ω
) have to be removed on all LON-Bus devices except the last one on
the line.
28.4.2 LON-Bus as free topology
Max. length of LON-Bus
as free topology: 500m
(cable length to all
devices added)
I-Bus
E3I040
LON-Bus
B3Q580
K3I050
B3Q580
24VDC
B3Q590/
595
K3I110
E3X10. /
B3Q...
R60 =
50
Ω
(EOL)
remove R1
remove R1
remove R1
remove R1
max.
32
LON-Bus
devices
The EOL resistors R1 (100
Ω
) have to be removed on all LON-Bus devices. The EOL resistor R60
on E3I040 has to be changed to 50
Ω
(e.g. use 2 resistors of 100
Ω
in parallel circuit).
T-taps are only possible from the terminal blocks of the LON-Bus devices.