Endress+Hauser Proline Promag W 500 - Page 38

Proline Promag W 500
38 Endress+Hauser
Modbus RS485
2
1
A
B
3
4
4
A
B
A
B
A0028765
 10 Connection example for Modbus RS485, non-hazardous area and Zone 2/Div. 2
1 Control system (e.g. PLC)
2 Cable shield: the cable shield must be grounded at both ends to comply with EMC requirements; observe cable
specifications
3 Distribution box
4 Transmitter
Current output 4-20 mA
4...20 mA
2
1
3
A0028758
 11 Connection example for 4-20 mA current output (active)
1 Automation system with current input (e.g. PLC)
2 Analog display unit: observe maximum load
3 Transmitter
2
4...20 mA
3
1
4
A0028759
 12 Connection example for 4-20 mA current output (passive)
1 Automation system with current input (e.g. PLC)
2 Active barrier for power supply (e.g. RN221N)
3 Analog display unit: observe maximum load
4 Transmitter