REV 0.0 April 18, 2023
Page 5
2.
Single AC Powered Sensor with Current Output
The following example is a variation of the first, but with the current output implemented.
As the sensor is AC supplied, there is only one free cable gland for all low voltage wiring, so an external junction box
is required to break out the current output.
The shield is shown being earth-grounded at the sensor since, being AC powered, Terminal 3 must be earthed through
Terminal 6. Optionally, the shield could be earth-grounded at the junction box (but not at the sensor).
As Terminal 4 (mA Output “-“) is the signal common for both the current output and the RS485 in the sensor, it is
acceptable to provide this connection through the one black wire to the junction box as shown - thus avoiding the
requirement for a 3-pair connection to the sensor.
Figure 2 – AC Supply Sensor Connections (With Current Output) Using Junction Box
