CS Instruments VA 500 - Connection Diagrams; Modbus; Analogue Output (4-20 Ma, Pulse); Mbus

Electrical wiring
VA 500 Bi-directional English 1.24 Seite 24 von 56
10.2 Connection diagrams
10.2.1 Modbus
Connector plug A (M12 - A-coding)
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.
10.2.2 Analogue output (4-20mA, Pulse)
Connector plug A (M12 A-coding) Connector plug B (M12 A-coding)
3
4
5
1
2
+ VB
- VB
20mA
+ -
Grau / Grey
Blau / Blue
Braun / Brown
20mA
+
-
3
4
5
1
2
Grau / Grey
Blau / Blue
Weiss / White
Schwarz / Black
Braun / Brown
Pulse CH1
Pulse CH2
Channel 2
Channel 1
10.2.3 MBus
Connector plug A (M12 A-coding) Connector plug B (M12 A-coding)
3
4
5
1
2
Blau / Blue
Grau / Grey
Schwarz / Black
MBus
MBus
3
4
5
1
2
+ VB
- VB
Blau / Blue
Braun / Brown