You wire the screw terminals on an RS-485 Power Adapter to connect the adapter to an external 24 VDC power supply. Always use the recommended wires (or wires with larger cross-sectional area).
Before use, check the required ratings for the external 24 VDC power supply. For more information, see RS-485 Power Adapter .
Move the slide switch on the adapter to the 24 VDC EXT position.
Loosen the screw of the terminal.
Strip approximately 7 mm (0.3 inch) of the insulation from the end of each wire.
Insert the end of the wire fully into its intended terminal. Ensure that no bare wire strands extend from the terminal.
Tighten the screw using a small flat-blade screwdriver. Ensure that the screw is fully tightened. Use the following recommended screw tightening torque: 0.5 Nm (4.5 lbf.in).
Repeat steps 2 to 5 until all screw terminals on the adapter are correctly wired. For more information, see Enable Injection of 24 VDC from an External Power Supply to an RS-485 Bus .
The external power supply should have an isolated, non-grounded (floating) 24 VDC output.
Use appropriate cable strain relief methods, to help prevent any load applied to the cable from being transferred to conductor terminations.
You can use the anchor points on the adapter enclosure and cable ties to fasten and fix the cables.