Emerson Rosemount 5400 Series - Page 73

61
Reference Manual
00809-0100-4026, Rev HA
Section 4: Electrical Installation
November 2014
Electrical Installation
Figure 4-15. Field Wiring Connections
MODBUS
POWER
HART
(RS-485)
HART to Modbus Converter
MB
MA
-
-
+
+
Ambients > 60 ºC
Use wiring rated
for min 90 ºC
RS-485 Bus
B
A
Power
supply
HART
+
HART -
120W
120W
If it is the last
transmitter on the
bus, connect the 120
W
termination
resistor
MODBUS
(RS-485)
v
erter
MB
MA
-
120W