Hart Communication With Supply Via Isolating Power Supply - Siemens SITRANS TH100 Operating Instructions Manual

4.3.9.2

HART communication with supply via isolating power supply

①
Only intrinsically safe HART communicators or HART modems are allowed to be used with an intrinsically safe power
supply.
②
HART communication via HART jacks of isolating power supply
③
Load ≥ 250 Ω only relevant if HART communication takes place via this branch. Otherwise, load of 0 to 650 Ω for ver‐
① ②
sions or
Figure 4-17 HART communication with supply via isolating power supply
SITRANS TH100/TH320/TH420/TR320/TR420/TF320/TF420 with 4 to 20 mA/HART
Operating Instructions, 05/2020, A5E41864807-AB
Description
4.3 SITRANS TR320/TR420
51