Poe splitter not working for tplink

vsauce

vsauce

n3wb
Sep 5, 2024
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0
India
The cameras are connect to tplink NVR. I have got 8 cameras C420I. And 4 pieces of C440W. The C440W cameras aren't working in Poe mode. They only work when connected with the DC power supply. They don't load in the NVR without DC power supply as well.
I bought few Poe splitter but they aren't doing anything.
Switches: Tplink TL-SF1009P
Camera: Tplink VIGI C440W
NVR: VIGI NVR R1016H 16 CHANNEL
On contacting tplink support, they confirmed these C440W cameras do not support POE power. But I need to fix the poe splitter issue.
 
There was a recent report of these passive cable splitters not working with an NVR, raising the question if the NVR uses mode B POE, where they wouldn't work. I've got no answer, just connecting dots.
 
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vsauce said:
Yes. But shouldn't a POE splitter be able to give proper power and Ethernet separately?
Click to expand...
Yes, but only if each camera and the NVR's LAN is configured with a unique, static IP, all in the same subnet but outside of the router's DHCP pool (if there is a router) then connected to the NVR's LAN via a switch, not plugged into any NVR POE port.

Insure the Ethernet cable has all 4 pairs, is wired either T-568B or T-568A on both ends and is pure copper, not CCA (Copper Clad Aluminum).

POE-SPLITTER.jpg
 
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TonyR said:
Yes, but only if each camera and the NVR's LAN is configured with a unique, static IP, all in the same subnet but outside of the router's DHCP pool (if there is a router) then connected to the NVR's LAN via a switch, not plugged into any NVR POE port.

Insure the Ethernet cable has all 4 pairs, is wired either T-568B or T-568A on both ends and is pure copper, not CCA (Copper Clad Aluminum).

View attachment 202621
Click to expand...
Yes. The NVR and the cameras are in the same subnet pool. The router to connected to one of the switch.
The rest of the plain poe cameras are working but the ones with the splitter are not working.
 
Have you confirmed that the camera works when connected without the splitter?

If so, then the problem is with the power feed, data line, or both.
You can first verify that the camera is getting power.
If that's ok, you can run a separate data wire between the camera and switch to see if that makes it work.
First identify where the problem is, then work on fixing it.
Most likely it's a single point failure, either the power feed doesn't work, or the data line doesn't work. Multiple failures can be maddening to debug.

The picture on the amazon link makes the splitter look suspicious. The wire colors on the RJ45s are all wrong. That in itself isn't proof of defective because they could use a different color convention internally in the splitter. It's just that one wire being brown looks kind of suspicious.

Capture.JPG
 
Thanks for going so indepth.
Yes the cameras work with separate DC and POE. Also IRL the splitter has two 3 wire colours red,black and green. Don't see any brown wire in it.
I can confirm the camera works entirely correctly without the splitter. Without the splitter it is connected with DC power supply and LAN Ethernet port. This works fine. But the splitter doesn't work at all. I tried few other splitters as well, and same problem. 20240912_093550.jpg
 
The RJ45 needs 4 wires connected to work, pins 1, 2, 3, and 6.
 
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Did you try the splitter with a short piece of network cable? I have tried this sort of splitter as well on a non-poe camera and if i remember correct it had issues because of the network cable length. Maybe the powersupply isn't powerful enough?
 
For the record:

Passive_POE 1.jpg
 
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Sorry for late reply.
Yes. The network cable is fine and the distance between switch and camera is just 4 meters.
Can confirm the entire system is running on T568-B Ethernet cable.
The manual says the switch supports upto 30W in each poe port. And the camera needs just 12W. Still it doesn't works.
I tested out other such splitter but it's all the same.
Any other options? I really need to make the cameras work without DC.
 
vsauce said:
Sorry for late reply.
Yes. The network cable is fine and the distance between switch and camera is just 4 meters.
Can confirm the entire system is running on T568-B Ethernet cable.
The manual says the switch supports upto 30W in each poe port. And the camera needs just 12W. Still it doesn't works.
I tested out other such splitter but it's all the same.
Any other options? I really need to make the cameras work without DC.
Click to expand...
If both ends (splitter end and injector end) don't comply with what is stated in my post #12, it won't work.
 
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Tried the passive splitter with two Dahua cameras and it did not function. Sent the unit back.

Have had good results with an active device that is called a POE Extender. Amazon and Andy both carry the unit. Works well to power two POE cameras via a single CAT 5e cable assuming that this is the desired action.

The only caution is that the POE port on the switch, that is supplying the power, must be rated high enough to power both cameras plus a few extra watts to power the extender. Only one extender is needed for this scenario.

 
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Alaska Country said:
Tried the passive splitter with two Dahua cameras and it did not function. Sent the unit back.

Have had good results with an active device that is called a POE Extender. Amazon and Andy both carry the unit. Works well to power two POE cameras via a single CAT 5e cable assuming that this is the desired action.

The only caution is that the POE port on the switch, that is supplying the power, must be rated high enough to power both cameras plus a few extra watts to power the extender. Only one extender is needed for this scenario.

Click to expand...
FWIW and if I read him right, the OP's issue is that his TP-LINK C440W camera is not designed to work with POE but only operates via external power, such as a 12VDC wall wart, and he was wanting to supply that power via CAT cable, hence the passive injector/splitter components. :cool:
 
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The C440W spec sheet says:
Capture.JPG

I'm detecting some communication confusions in the thread.
Alaska Country said:
Have had good results with an active device that is called a POE Extender. Amazon and Andy both carry the unit. Works well to power two POE cameras via a single CAT 5e cable assuming that this is the desired action.
Click to expand...
I first thought that this statement applied to the C440W, the subject of the thread, but after reading the C440W specs this statement must apply to only the mentioned dahua cameras which of course support POE. So while a true statement, it doesn't apply to the C440W.

Vsauce, I believe you have confirmed that the camera works ok with a direct 12 volt power input (like a wall wort) and patch cable to the switch. Look at Tony's diagram in port #12. This should be easy to troubleshoot! Are you possibly doing something different you haven't mentioned, like using a different switch ports with the passive splitter, using a different 12 volt supply, or anything else that's different?

(I edited this post a few times while working out my confusion!)
 
Last edited:
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Yaa the camera works perfectly in DC power. But I want to power the camera through PoE. Hence I am using those passive splitter. But that doesn't work.

I think the passive splitter aren't working cause it's not IEEE certified. Hence I have ordered an IEEE certified splitter. Hopefully that works. Will update as soon as it arrives.
 
tigerwillow1 said:
This should be easy to troubleshoot!
Click to expand...
You are so right!

I have used passive injector/splitters on several Amcrest (Dahua OEM) non-POE 12VDC cameras in recent years and they worked just fine; I know of at least one that is still in place since 2019 and is chugging right along.

The ones I used are wired as mentioned and shown in the diagram of post #12: data on 1/2 and 3/6 on both RJ-45's and DC power connector to pins 4/5 & 7/8 (center is 4/5 positive, collar is 7/8 negative).
 
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vsauce said:
But I want to power the camera through PoE.
Click to expand...
More terminology nitpick: If you are supplying power via the camera's 12 volt power jack, you are not using POE. You cannot use POE with the C440W. The passive splitter has nothing to do with POE. It's merely placing 12 volt power on 4 otherwise unused wires in the ethernet cable, then "splitting" it off on the far end.
 
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