Emerson 2400S - Manual (Page 17)

Installation Manual 13
I/O Wiring – Model 2400S Analog Transmitters
P
o
wer Su
ppl
y
I/O
W
irin
g
– DP
an
d
DN
I/
O W
iri
n
g
– AN
Be
fo
re
Y
o
u
Begin
Figure 3-1 Basic mA output wiring – Internal power
Figure 3-2 HART/analog single-loop wiring – Internal power
820 Ohm maximum
loop resistance
+
–
HART-compatible
host or controller
For analog communications:
• 820 Ohm maximum loop
resistance
For HART communications:
• 600 Ohm maximum loop
resistance
• 250 Ohm minimum loop
resistance
–
+