Electrical wiring
VA 525 EN V1.01
page
13
o
41
9.2
Connection diagrams
9.2.1 Modbus
3
4
5
1
2
+ VB
- VB
Blau / Blue
Weiss / White
Schwarz / Black
Modbus (B)
Modbus (A)
Braun / Brown
Remark
:
If the sensor is placed at the end of the Modbus system a termination is required. The sensors have
an internal switchable termination, therefore the 6 fastening screws from the lid are to be released
and set the internal DIP Switch to “On”. It must be ensured that the connection plugs are still
plugged and the gasket is installed correctly.
Alternatively, a 120R resistor can be installed in the plug between pin 2 and pin 4
.
9.2.2
4..20mA / Impuls
3
4
5
1
2
+ VB
- VB
4 … 20mA
+
-
Grau / Grey
Blau / Blue
Weiss / White
Schwarz / Black
Braun / Brown
9.2.3 MBus
3
4
5
1
2
+ VB
- VB
Blau / Blue
Grau / Grey
Schwarz / Black
MBus
MBus
Braun / Brown
