Phihong POE36U-1AT Dépliant

Power-up Sequence: 

 

Upon power-up, all 3 LEDs will light for 2 seconds, as part of the self-test for the internal microprocessor 
software.  After the end of the 2 seconds, the "ON" LED will illuminate green, signifying that the DC 

output voltage is available for powering a compliant load (to the 802.3af PoE standards). 

 
Detection Sequence: 

 
 

Once a compliant load is attached to the output RJ45 connector, the green "CONNECT" LED will 
illuminate. Should the load is classified as Class 4 PD, the green “PoEPLUS” LED will illuminate. 

Otherwise, “PoEPLUS” LED will stay off. 

 

Should the load be non-compliant then the LEDs will blink a code signifying the cause for non-detection. 

 Detection 

Failure 

Codes: 

 

1.  Incorrect resistive signature – The green “CONNECT” and green “PoEPLUS” LEDs will blink 3 times. 
2.  Incorrect capacitive signature – The green “ON” LED will blink 3 times. 

3.  Incorrect Voffset – The green “CONNECT” and green “ON” LEDs will blink 3 times. 
4.  Unstable current measurement – The green “CONNECT” LED will blink 3 times 
5.  Low voltage sensed during detection (overload) – The green “PoE PLUS” LED will blink 3 times 

 
After the LEDs blink 3 times the PSE will continue to try to detect a valid load.  Therefore, until the 
correct load is applied, the LEDs will continue to blink.  If there is an open circuit connected to the output 

RJ45 then the LEDs will not blink but the PSE will continue to try to detect a valid load.  

 
Fault Sequence: 

 

Should there be a fault such as an overload or short circuit then all the three LEDs will blink 5 times in 2 
seconds, and then go off as the power supply tries to re-detect a valid load.  If there is a problem in 
detecting, the LED will indicate what is wrong with the load as per the codes in the section above.