
PLX51-HART-4I / PLX51-HART-4O
♦
HART Input/Output
Installation
Multidrop Field Devices
User Manual
ProSoft Technology, Inc.
Page 14 of 127
The output channels (PLX51-HART-4O) source the current directly and therefore can
also be connected directly to the field device signal terminals. The input and output
channels provide internal current limiting and electronic fuse protection.
Figure 2.7 – PLX51-HART-4O Connection
The equivalent Analog Input and Output circuits are shown below.
Figure 2.8 – Analog Input Equivalent Circuit
Figure 2.9 – Analog Output Equivalent Circuit