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REV 0.0 April 18, 2023
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5.
Multiple DC Powered Sensors
The following example shows the Gateway wired to multiple sensors, each with a current loop output to the PLC.
As they are all DC version sensors, they are powered directly from the 24Vdc supply. It is shown as a separate power
supply, but one could use a 24Vdc supply from the PLC instead. In either case, the Sensor Supply output from the
Gateway is not connected in this example.
Note that all three sensors are shown as being isolated from earth/ground at their tanks, so the shield is grounded at the
power supply.
Figure 5 – Multiple DC Sensors with Current Outputs