![background image](http://html.mh-extra.com/html/emerson/475/475_user-manual_20876041.webp)
HART Functionality
3-7
Figure 3-2. HART Communication Terminals and Access Door
NOTE
The lead set must be used to communicate with a wired or wireless device. The 475
Field Communicator cannot communicate wirelessly with devices.
Wiring Diagrams
Figure 3-3 shows how to connect the 475 Field Communicator to a HART loop.
Figure 3-3. Connecting to a HART Loop
Figure 3-4 shows how to connect the 475 Field Communicator directly to the terminals
of a HART device.
Figure 3-4. Connecting Directly to a HART Device
HART Communication Terminal Markings
Access Door
Communication Terminals
HART Device
Current
Meter
RL
≥
250
Ω
mA
Power
Supply
+
+
+
+
+
+
-
-
-
-
-
-
Current
Meter
mA
Power
Supply
RL
≥
250
Ω
HART Device
+ -
+
-
+
-
+
-
+
-
+
-
Содержание 475
Страница 1: ...USER S MANUAL ...
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Страница 80: ...Troubleshooting 5 10 ...
Страница 92: ...B 6 APPROVAL DRAWINGS This approval drawing can also be found on the www fieldcommunicator com website ...
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