22
Reference Manual
00809-0100-4021, Rev GC
Section 2: Installation
April 2014
Power/current loop connections
Use copper wire of a sufficient size to ensure that the voltage across the transmitter power
terminals does not go below 12.0 Vdc.
1.
Connect the current signal leads as shown in
2.
Recheck the polarity and connections.
3.
Turn the power
ON
.
For information about multichannel installations, refer to
Note
Do not connect the power/signal wiring to the test terminal. The voltage present on the
power/signal leads may burn out the reverse-polarity protection diode built into the test
terminal. If the test terminal’s reverse polarity protection diode is burned out by the incorrect
power/signal wiring, the transmitter can still be operated by jumping the current from the test
terminal to the “–” terminal. See
“Test terminal (HART / 4–20 mA only)” on page 176
for use of
the terminal.
Figure 2-11. Connecting a Field Communicator to a Transmitter Loop (HART/ 4–20 mA).
Power/Signal terminals
The signal wire may be grounded at any
point or left ungrounded.
Power
supply
250
R
L
1100
AMS Device Manager software or a Field Communicator can be connected at any
termination point in the signal loop. The signal loop must have between 250 and 1100
ohms load for communications.
or*
Summary of Contents for Rosemount
Page 1: ...Reference Manual 00809 0100 4021 Rev GC April 2014 Rosemount 3144P Temperature Transmitter ...
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Page 4: ...iv Reference Manual 00809 0100 4021 Rev GC Title Page April 2014 ...
Page 10: ...x Reference Manual 00809 0100 4021 Rev GC Table of Contents April 2014 Table of Contents ...
Page 38: ...28 Reference Manual 00809 0100 4021 Rev GC Section 2 Installation April 2014 Installation ...
Page 188: ...178 Reference Manual 00809 0100 4021 Rev GC Section 5 Maintenance April 2014 Maintenance ...
Page 250: ...Index 244 Reference Manual 00809 0100 4021 Rev GC Index April 2014 Index ...
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