4.3
Wiring
If the power ground terminal and the negative 4–20mA terminal in the controller are internally connected
(non-isolated 4–20mA input), it is unnecessary to connect the 4–20mA negative wire (green) to the 4–20mA
negative terminal in the controller. If a separate DC power supply other than that from the controller is used,
make sure that the output from the power supply is rated for 22–26 VDC @ 65mA.
*
NOTE
*
The negative 24V power terminal (power ground) and the negative 4–20mA ter-
minal on the ST-730 Series sensor are internally connected.
Follow the wiring table below to connect the ST-730 Series sensor to a controller:
Table 3.
Wire Color
Designation
Red
24V +
Black
24V Power ground
White
4–20mA +
Green
*
4–20mA -
Blue
RS-485 A
Yellow
RS-485 B
Clear
Shield, earth ground
*
Internally connected to the power
ground
4.4
Connecting via Bluetooth
A Bluetooth adapter (P/N: MA-WB) can be used to connect a ST-730 Series sensor to a smart phone with the
uPyxis®
Mobile App or a computer with a Bluetooth/USB Adapter (P/N: MA-NEB) and the
uPyxis®
Desktop
App. The power should be sourced from a 24 VDC power terminal of a controller. If a controller is not
available, please purchase a Pyxis PowerPack-1 (P/N: MA-BLE-1) or PowerPack-4 (P/N: MA-BLE-4) auxiliary
power supply with Bluetooth, or an alternative 24 V power supply that can directly connect to the ST-730
Series sensor with proper cable connectors from Pyxis.
Figure 5.
Bluetooth connection to ST-730 Series sensor
ST-730 Series User Manual
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