Baxi LUNA SAT RCZ-MB Installation And Operating Manual page 51

Application
Small residential buildings
Large residential buildings
Small districts
Medium districts
Larger districts
Point-to-point
Minimum bus voltage
• The signal converter powers the bus network and therefore each connected M-Bus device generates a voltage drop
in the network.
• For each M-Bus connected to the final points of the bus segments, the minimum bus voltage should be checked and
guaranteed.
• The voltage drop at the ends of the bus segments id caused by the type of cable used, the distances, the route and
the number of connected devices (slave).
Diagram of the length of the bus cable
Cable diameter 8 mm
l Length of cable [m]
n Number of M-Bus devices
Maximum length of cable with equidistant distribution of devices
Maximum distance of cable with devices connected at the end of the bus cable
n
Equal to n but with a reduced signal due to the short circuit of an M-Bus device
s
INSTALLATION AND OPERATING MANUAL
350 m 1000 m
350 m 4000 m
1000 m 4000 m
3000 m 5000 m
5000 m 7000 m
10.000 m 10.000 m
51
0.8 mm 250
2
250
0.8 mm
64
0.8 mm 64
2
1.5 mm 64
2
1.5 mm 16
2
1.5 mm 1
2
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9600 Baud
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7213763.01 - en