CGU 04i DESCRIPTION
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2.8. Antenna connection
Antenna is connected to CGU 04i by FME connector on the back panel.
2.9. Technical specifications of port 2
•
for product Expansion port M-BUSD
Expansion port M-BUSD
Power supply
Voltage
+10 .. +30 V
Supply power
Max. 4 W
Environment
Operating temperature
-20 .. +55 °C
Storage temperature
-20 .. +85 °C
Standards
Emission
EN 55022/B
Immunity
ETS 300 342
Safety
EN 60950
M-BUS specifications
(
Č
SN EN 1434)
Max. devices (each 1,5 mA)
30
Max. operating bus current
60 mA
Overload protection
100 mA
Short circuit strength
permanent
Bus voltage mark
36 .. 43 V
Bus voltage space
24 .. 31 V
Max. Total cable length (300
Bd, 200 nF/km)
1000 m
Information about short-circuit on wiring of M-BUS it is possible found out in VF
statistics for port COM2 wickedly state of signal DTR. Level 1 indicates correct activity of the
bus, level 0 informs about a short-circuit on the bus.
