Emerson FB3000 Instruction Manual page 75

Figure 3-10
each HART channel only communicates to a single HART device. You choose whether a
given channel serves as an input or output in FBxConnect. The 24V internal loop power
supply powers the HART devices. The HART interface only sinks current, it cannot source
current. As an output, each channel simultaneously provides an analog current signal
output (sink current only at 4-20 mA) and a HART signal modulated on top of it.
Figure 3-10. HART Wiring – Point-to-Point Mode
HD
Figure 3-11
but get power from an external power supply.
Figure 3-11. HART Wiring – Point-to-Point Mode – External Power Supply
HD
P
I/O Configuration and Wiring
shows how to wire all four HART channels in point-to-point mode. In this case,
HART Device
shows how to wire a HART channel for devices which do not use loop power
HART Device
External 24V Power Supply
FB3000 RTU Instruction Manual
D301851X012
November 2023
61