Siemens RD150

19
MAN-100472 RD150 - Operating Instructions
57030-EN-180717
5.5 Connection HART multidrop
ThefollowingillustrationsshowinasimpliedwaytheuseofRD150
in conjunction with several HART sensors.
1
~
=
2
3
Fig. 13: Installation example with one RD150 for several sensors in a Multidrop
system
1 Sensor
2 RD150
3 Voltage supply/Processing
5.6 Connection signal conditioning instrument/
four-wire sensor
Thefollowingillustrationshowsthesimpliedtheconnectionof
RD150 to a four-wire sensor with active 4 … 20 mA output.
For this, terminals 1 and 4 on RD150 must be bridged.
Four-wire sensor with ac-
tive 4 … 20 mA output