Specifications

CDA70 MODEM DESCRIPTION
20
Connection of the jumpers:
• M-BUS
Name of port M-BUS
Power supply Voltage 10,8 .. 15,6 V
Supply power Max. 30 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
(EN 1434)
Max. devices (each 1,5 mA) 30
Max. operating bus current 60 mA
Overload detection 100 mA
Short circuit strength Permanent
Bus voltage mark 36 .. 43 V
Bus voltage space 24 .. 31 V
Max. total cable length
(300Bd, 200nF/km)
1000 m
M-BUS port power supply for CDA-70-U(V)-4M version
External or internal power supply of expansion port M-BUS it is can evoke by wiring
of the jumper J4. If it is necessitated external power supply of module, it must be
disconnection jumper J4. Internal power supply is evoking of connection jumper J4. Jumpers
are placement them to a picture below. We recommended internal power supply only in the
event of, that it is not possible ensure external power supply. If it is choose internal power
supply, converter M-BUS is not galvanic separated.
M-BUS port power supply for CDA-70-U(V)-EM version
External or internal power supply of expansion port M-BUS it is can evoke by wiring
of the jumpers SK9 and SK10. If it is necessitated external power supply of module, it must be
disconnection jumpers SK9 and SK10. Internal power supply is evoking of connection jumpers
SK9 and SK10. Jumpers are placement them to a picture below. We recommended internal
power supply only in the event of, that it is not possible ensure external power supply. If it is
choose internal power supply, converter M-BUS is not galvanic separated
CDA-70-U(V)-4M version
Jumper J3
CDA-70-U(V)-EM version
Jumpers SK7 and SK8