User`s guide

DESCRIPTION
24
Jumper placement can be seen in the picture below (module Expansion port
RS485/RS422 from TOP layer). We recommend that internal power supply is only chosen in
the event that it is not possible to ensure external power supply. If internal power supply is
chosen, converter RS485/RS422 is not galvanic separated.
The jumper circuitry for internal supply The jumper circuitry for external supply
The jumper circuitry for RS485 The jumper circuitry for RS422
• Expansion port MBUS
Expansion port MBUS
Voltage +10 .. +30 V Power supply
Supply power Max. 4 W
Operating temperature -20 .. +55 °C Environment
Storage temperature -20 .. +85 °C
Emission EN 55022/B
Immunity ETS 300 342
Standards
Safety EN 60950
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
M-Bus specifications
(EN 1434)
Max. total cable length (300Bd,
200nF/km)
1000 m
Jumper J2
Jumper J3
Jumper J2
Jumper J3
Jumpery J4 a J5
Jumper J6