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PSA16U-480 Datasheet(PDF) 3 Page - Phihong USA Inc.

Part # PSA16U-480
Description  Single Port 15.4W Power over Ethernet Adapter
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Manufacturer  PHIHONG [Phihong USA Inc.]
Direct Link  http://www.phihongusa.com
Logo PHIHONG - Phihong USA Inc.

PSA16U-480 Datasheet(HTML) 3 Page - Phihong USA Inc.

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PSA16U 480(POE) Led Function
WWW.PHIHONG.COM
Power Injector Block Diagram
Description of LED Functions for Power Injector
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 2 second period, the "ON" LED will illuminate green. The DC
output voltage is now 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 be non-compliant then the LEDs will blink a code specific to the cause for non-
detection.
Detection Failure Codes:
1. Incorrect resistive signature – The green “CONNECT” and red “FAULT” 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 “ON” LED will blink 3 times
5. Low voltage sensed during detection (overload) – The red “FAULT” LED will blink 3 times
After the LEDs blink 3 times the Power Injector will continue to try to detect a valid load. 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 Power Injector will continue to try to detect a valid
load.
Fault Sequence:
Should there be a fault such as an overload or short circuit then the red "FAULT" LED will illuminate.
The red “FAULT” LED will illuminate for 2 seconds and then go off as the power supply tries to re-
detect a valid load. If there is a problem detecting the load, the LEDs will indicate a possible fault as
per the codes in the section above.
RJ45
Data
IN
1
2
3
6
5
4
7
1
2
3
6
5
4
7
8
RJ45
+
-
Data
&
Power
Out
PoE
Power &
Control
On
Power
Connect


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