Emerson Network Router Manual de usuario Pagina 19

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Installation and Use Manual 13
Installation and Setup
ProLink II Setup Transmitter StartupUsing ProLink IIBefore You Begin
Figure 2-4 HART/Bell 202 connection to Model 1700/2700 I.S. transmitters
+
VIATOR
VIATOR
or
+
DCS or
PLC
R2
R3
R1
Primary mA output terminals
Transmitter
External power supply
USB plug
Notes:
Connect the HART interface leads to the primary mA output of the transmitter, or to any point on the network.
If necessary, use any combination of R1, R2, and R3 to bring the total resistance within 250–600 Ω.
If no other device is connected to the primary mA output, add R1.
If the primary mA is connected to a DCS or PLC with R2:
Where R2 is insufficient, add R1 to bring R1+R2 into range.
Where R2 is absent, add R3.
Bell 202 signal
converter
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