DS-2CD2232-I5 PoE not working

J

java

n3wb
Jul 5, 2015
10
0
Europe
I'm trying to make camera(DS-2CD2232-I5) to work using PoE. So at the switch end I'm using a PoE injector, but nothing is happening, the camera doesn't boot up. I tried two different PoE injector vendors. On the injector of one vendor there is a led which becomes green when I switch on the power, but the camera itself is always dead.

REMARKS :

1. Camera is working when I connect the power cord directly into it
2. Power supply parameters :
Input : 100-240V, 1A, 50-60Hz
Output : 12V, 2A, Max : 24W

Can someone help me ?
 
The passive injector in the link will only work with the 12v also plugged in and only with a 12v power source,
DON'T stick 48v down the 12v pigtail to the camera unless you want a paper wait.
 
Hi whoslooking, so as I specified above the power source gives me 12V and the camera is also expecting 12V, everywhere is 12V, why isn't it working ? Should I use only active PoE injector ?

Hi alastairstevenson, should I use only active PoE injectors which conforms with 802.3af standard ? Passive PoE injectors will not work, right ?
 
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I think I know what's wrong. Are you using a passive splitter at the camera end and then plugging the 12V carried across the ethernet cable into the DC 12V input of the camera?

You either need to do that... or use 48V, but as whoslooking has said, do not put 48v into the 12v input unless you want a dead camera.
 
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Del Boy, no I'm not doing that, I do nothing at the camera end, I just connected RJ45 cord into RJ45 socket
fenderman, yep this could be the problem, but I tried to use a short patch cord, also without any success. Anyway I will try to use an active PoE injector, thank you
 
Thats the problem, you have to connect both the rj45 and the 12v into the camera. The 12v splits from the rj45 thats why its called a splitter.you inject 12v and data at the sttart and the split at the camera they work well at short distance when using a good 3amp power block.
 
whoslooking, Yes I understand that, but I don't want to use a splitter, if the camera itself supports PoE (802.3af) I want to connect only an RJ45 cable into it and nothing more
 
Java,

My point is, that if you want to use 12V then you have to use a splitter! Otherwise you need a 48V power supply.

"You either need to do that... or use 48V" 48V via the RJ45 that is. 12V via the RJ45 will not work!

If you don't want to use a splitter, then use a 48V PoE switch. You can't use a 12V power supply with PoE.
 
java said:
The first one is this : Tycon Power Systems POE-INJ-S Passive POE Injector Shielded
And the second one : Mikrotik : http://routerboard.com/RBGPOE

I see from mikrotik specification that it is passive non 802.3af
Click to expand...

The camera accepts a 12V power input if you want to power it from a wall wart. If you want to power it directly via POE, the POE needs to adhere to the 802.3af standard.
From the POE Wiki: The original IEEE 802.3af-2003 PoE standard provides up to 15.4 W of DC power (minimum 44 V DC and 350 mA) to each device. Only 12.95 W is assured to be available at the powered device as some power dissipates in the cable.

The camera takes the 48V and converts it to the voltage it needs.

The type of injectors you mention take power from a wall wart and send it down unused pairs in the CAT5/6 cable, but then they need an equivalent splitter at the camera end to remove the power and send it to a power connector that you can plug into the 12V power connection on the camera.
 
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