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ELECTRICAL INSTALLATION
Power
Use the following guidelines when selecting a power source:
•
Use an 8...28V DC power supply The specific connection depends on which output is option is used
•
Use clean electrical line power
•
Do not operate this unit on circuits with noisy components such as fluorescent lights, relays, compressors or variable
frequency drives
•
Use linear power supplies
N
OTE:
The power and output connections share a common ground
Wiring
4...20 mA Loop
Connect a twisted pair wire (not provided) to the terminals of the transmitter marked 8...28V DC and Output Do not connect
the shield to the transmitter if the twisted pair wire is shielded The shield should be grounded at the receiver only
See
Figure 6
The transmitter is reverse-polarity protected
The receiving equipment must accept industry standard true two-wire or loop powered 4...20 mA process transmitter inputs
The power can either be supplied by the receiving equipment or an external power supply that supplies 24V DC an 30 mA
See
Figure 6
for the wiring setup using an external power source and
receivers may be connected in a series as shown in
isolated inputs
May 2022
8...28V DC
+8-28 VDC
+8-28 VDC
Output
Output
Output
4...20 mA
Gnd
Gnd
Programming
RECEIVER
Load
Figure 6: Loop connection with single load
Figure
7, but only one should provide power, and all should have
8...28V DC
+8-28 VDC
+8-28 VDC
Output
Output
Output
Gnd
Gnd
4...20 mA
Programming
RECEIVER
Additional Loads
Figure 7: Loop connection with multiple loads
VRX-UM-00371-EN-04
POWER
SUPPLY
8...28V DC
Figure 7
using the receiver as the power source Several
RECEIVER/POWER SUPPLY
RECEIVER
Electrical Installation
Page 11
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