Reference Manual
00809-0100-4022, Rev AA
July 2002
Model 4600
2-6
Connect Wiring and
Power Up
Wiring
To make connections, connect the red lead to the positive terminal of the
power supply and the black lead to the positive terminal of the I/O card on the
PLC. Connect the green wire to panel ground. Keep green ground wire as
short as possible to minimize the effects of Radio Frequency Interference
(RFI).
Inductive-based transient protectors with more than 3 mH of inductance can
adversely affect the output of the Model 4600 transmitter. If your application
requires transient protection, it is recommended that you order a transmitter
with the transient protection option specified.
Figure 2-2. Model 4600 Field
Wiring
Signal Wiring Grounding
Do not run signal wiring in conduit or open trays with power wiring, or near
heavy electrical equipment.
Power Supply 4–20 mA Transmitters
The dc power supply should provide power with less than two percent ripple.
Total resistance load is the sum of resistance from signal leads and the load
resistance of the controller, indicator, and related pieces. Note that the
resistance of intrinsic safety barriers, if used, must be included.
NOTE
A minimum loop resistance of 250 ohms is required to communicate with a
HART Communicator. If a single power supply is used to power more than
one Model 4600 transmitter, the power supply and circuitry common to the
transmitter, should not have more than 20 ohms of impedance at 1200 Hz.
R
L
> 250 ohm
275 Hart
Communicator
Model 4600
Power
Supply
PLC
I/O
Card
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