Emerson Network Router User Manual
Page 19
Installation and Use Manual
13
Installation and Setup
Pr
oL
in
k II
Setup
T
ransmitter Star
tup
Usi
ng
Pr
oL
in
k
II
Be
fo
re
Y
o
u
Begin
Figure 2-4
HART/Bell 202 connection to Model 1700/2700 I.S. transmitters
–
+
VIA
TOR
VIA
TOR
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