TSW202 switch PoE does not works

[Viacheslav]

Hello,
I use with TSW202 power supply unit ( switching adapter) with 220 VAC , 15 A max input and output 53VDC, 1.8 A, 90 Watt.
I connect WiFi Access Point with PoE 802.11af/at to switch TSW202 PoE out.
But AP is not powered on and link is down.
TSW202 stat shows that it’s port PoE up, and that AP consumes only 2-3 Watt. Normal AP power consumption is up to 15Watt.
Is it something wrong with switch power supply? It works with other PoE switch without problem.

[Marijus]

Hello,

Does it not work for that one port, or do other ports produce the same result? Have you tried testing another 802.11af/at device with the TSW202? What are the results?

Best regards,

[Viacheslav]

I have tried various switch ports and two AP 802.11ax PoE 802.3at (Netgear, Cambium). Result is the same , AP even is not powered on. It seems PoE 802.3at negotiation does not work.

[Marijus]

Hello,

The TSW202 switch uses the 802.3at Alternative B standard. In rare cases, your access points (APs) might not support power delivery on the pairs used by Alternative B and therefore cannot negotiate power. Please check if your specific APs use this standard. Also, try switching the cables, as they might be faulty.

Best regards,

[Viacheslav]

I use AP with standard 802.3 at, both are USA brand.
I will check (measure) what pairs TSW 202 transmit power, Volt and Amper. Thank you.

[mike_orbit]

Hello, I have the same problem. I have a “Alternative A” device that I want to connect to the TSW202. Is there a way to convert from “Alternative A” to “Alternative B” or do I need to buy another switch? Does Teltonika provide “Alternative A” switches?
Regards
Mike

[Marijus]

Hi,

If you need to convert “Alternative A” to “Alternative B,” you can look for a converter. However, if you need to use more than one port, I recommend finding a switch that supports “Alternative A.” Currently, Teltonika does not offer a switch that supports 802.3at Alternative A.

Best regards,