Silicon Laboratories Si3482 SMART PSE-24 KIT User Manual page 6

Si 34 82 S mart PSE- 24 UG
Figure 6. Status Screen after an Overload on Port 3
To reset the port, decrease the load back to one resistor; unplug the PD, and plug it back in. This demonstrates
"retry after reconnect".
For Port 1 (PoE+ port with Class 4 PD), the overload does not happen even with 19.5 W being drawn by the PD.
Note: Use caution because, in this case, the load resistors and PD will get hot.
Figure 7. Status Screen Showing Class 4 PD on Port 1 Drawing 19 W
Step 4: Demonstrate the port priority and system overload protection features.
Disconnect all PDs, and then connect the Class 3 PDs to Ports 2 and 3 with two load resistors so that they draw
13 W each (26 W total power).
6 Rev. 0.2