poe voltage on cctv ip66 gw-1337ip camera

[darikweitzel 0]

I been searches for days for an answer and can not get a solid one.

The question is...

 

Can I use my mikrotik 24v poe to power my 12v ip poe camera? The ONLY specs this camera gives me is that the power rating is 12v +-10v. It doesnt say if it "ip camera" meets the IEEE standards or not. The POE does meet the standards however. I am just worried that the poe 24v will burn out the device.

 

I hear both ways, voltage is voltage and will burn out my device if powered and also it wont burn it out because the camera will do a hand shake with the poe to determine the resistance. What are your thoughts before I just "test" it out.

Here are links to what I am working with.

POE-

http://store.l4networks.com/poe-24i-24-vdc-power-over-ethnernet-supply-injector/

 

IP Cam-

http://www.gw-security-camera-system.com/Camera-Aptina-Megapixel-HISILICON-Hi3518C/dp/B00K7J1RC4

[mgb 0]

if the cameras poe, it shouldn't hurt although I'm not sure the camera would actually work on 24 if its meant for 48.

 

The 12 volt power you're takking about, isn't that just if you're using the power jack?

[darikweitzel 0]

if the cameras poe, it shouldn't hurt although I'm not sure the camera would actually work on 24 if its meant for 48.

 

The 12 volt power you're takking about, isn't that just if you're using the power jack?

 

the camera is ment for 12v not 48v from what all I have read. So I would assume the DC12v 1.5amps transformer I am currently using would be the same usage the camera would take away from the POE correct? But if I am pushing 24v to the camera; does the poe talk to the camera to determine the correct volts so it cant hurt the cam?

[Don Stephens 0]

All PoE injectors are 24VDC, just as all PoE ports on network switches typically output 24VDC (input may be 48VDC). The DC terminal on your IP cameras works differently that the network port that you're injecting power through. As long as your camera is actually a PoE capable camera, this injector is perfectly fine to use even if the 24V and 12V thing is throwing you off.

[darikweitzel 0]

All PoE injectors are 24VDC, just as all PoE ports on network switches typically output 24VDC (input may be 48VDC). The DC terminal on your IP cameras works differently that the network port that you're injecting power through. As long as your camera is actually a PoE capable camera, this injector is perfectly fine to use even if the 24V and 12V thing is throwing you off.

 

I guess the site where I bought the POE Camera says it is POE optional. So I would assume it IS indeed POE. The voltage is throwing me off and hate to burn out a 100$ camera. So pushin 24v into a 12v cam via POE it will indeed not hurt the cam?

[mgb 0]

All PoE injectors are 24VDC, just as all PoE ports on network switches typically output 24VDC (input may be 48VDC).

 

I don't believe that's true.

Many injectors provide 48vdc out as well as any Poe switch I have ever used.

[darikweitzel 0]

So I hooked up a 24v and a 18v POE24i and POE18i POE Adapters to my POE Cams and they dont even turn on at all. So my assumption is that it detected the wrong voltage and safety reasons it told it to not send any voltage at all. So the next thing is do I purchase a POE switch and what do I get to make sure it will power my cams?

 

note- it did not wreck the cam at all which I am thankful for.

[mgb 0]

I'm not surprised that it didn't turn on.

I would try a regular poe switch or injector.

I find it a little odd that GW Security doesn't mention much about the poe other than in the description.

Even on the ethernet jack thats shown in the pic, just states "Ethernet" where often but probably not always, they will state something about poe.

 

I would still think that the piece you found about 12 volts was probably referring to the regular power jack.

[darikweitzel 0]

I'm not surprised that it didn't turn on.

I would try a regular poe switch or injector.

I find it a little odd that GW Security doesn't mention much about the poe other than in the description.

Even on the ethernet jack thats shown in the pic, just states "Ethernet" where often but probably not always, they will state something about poe.

 

I would still think that the piece you found about 12 volts was probably referring to the regular power jack.

 

When you say regular poe switch or injector; what is that. Do I look for voltage or just any unmanaged switch that says it can power through ethernet?

 

yes, I am finding it even harder to find anyone with this cam that powers it via POE. I am starting to think that maybe its NOT POE compatible at all. Can someone do research for me to find out if in fact this cam can be powered by ethernet? I did find this-- http://www.neweggbusiness.com/product/product.aspx?item=9b-0y0-006z-000e1

 

which is a NVR they power their cams with perhaps? Any help is useful as I am out of ideas. I dont want to invest more money to find out it can not be powered by POE.

[mgb 0]

By regular poe switch, I mean one that doesn't say 24 volt.

here is a poe switch that has 8 ports with 4 of them providing poe

http://www.newegg.com/Product/Product.aspx?Item=N82E16833156229&cm_re=poe_switch-_-33-156-229-_-Product

 

Even if your camera doesn't truly support poe, you can use poe with a splitter and use the poe power converted to 12 volt (or a couple of other selectable voltages if needed) and jacked into your cameras power jack

http://www.neweggbusiness.com/product/product.aspx?item=9b-33-980-028

 

I use one of these for powering a small wireless switch when setting up cameras. it works great

[MrMxyzptlk 0]

Sounds like you need some basic POE information. Now this is what I've gathered from my studies.

 

POE is some weird DC voltage sent over four of the eight lines of a CAT5 cable. The voltage can be anywhere from 37 to 57 vdc with currents up to 350mA. Its the wattage that matters. The POE device detects the presence of power and decides if it is right and if so allows the device to use the power. If it doesn't like the power coming in it wont use it at all and it will look for an alternate source. Just because a device has a 12vdc or 24vac or 19.53 vdc/vac port for alternate power doesn't mean the POE injection needs to be the same voltage type. I've seen POE injectors using all manners of input powers to meet the criteria for POE. You need to determine if the device is 802.3af or 802.3at compatible, there is some cross platform compatibility but best to match them up.

 

I hope this helps.

[darikweitzel 0]

I may just ending up getting a poe switch. I contacted the manufacture and they stated indeed its true poe. They said that all the poe injectors I tried should have worked regardless the voltage. They are unsure why it doesnt power up the cam. I told them I had 2 cams and both do the same exact thing. Tried 12, 18 and 24volts and nothing. I guess my next try will be a switch. maybe that will do the trick. I wish I could just test it on something before buying a poe switch. I will keep you up to date on what I find out.

[darikweitzel 0]

tried a poe switch and still doesnt power the cams. I wonder if the power wiring is different on the cams. Anyone know how I can find out what the wiring is for the cam without going through the manufacture? I talked to them and havent a response back yet.

[ssnapier 0]

Holy cow that was painful to read!

 

There are two published POE standards which are these:

 

802.3af = Supply of 48VDC and up to 350mA so that the power initiated per channel does not exceed 15.4W and the power per channel that is delivered does not exceed 12.95W. Can be used with CAT-3/5/5e/6/7 cable

 

CAUTION, MOST SWITCH MAKERS USE TWO VERTICAL CONNECTIONS PAIRED TOGETHER TO FORM A CHANNEL!!

 

802.3at (commonly referred to as POE+) = Supply of 48VDC and up to 720mA so that the power initiated does not exceed 25.5W per device. It must cannot be used with CAT-3 (too much current).

 

MikroTik uses a 24VDC input voltage and calls it POE, which is pretty dangerous in my opinion. I have seen people plug in 802.3af compliant switches to these devices and kill them instantly. I wish they would stop doing this stupid stuff and follow the standard!

[ssnapier 0]

POE power classes (this is per device):

 

Class 0 - 13.0 W <--- typical default

Class 1 - 3.84 W

Class 2 - 6.49 W

Class 3 - 13.0 W

Class 4 - 25.5 W <--- this is 802.3at only!

 

Most non-PTZ cameras powered by POE are class 1 or 2.

[darikweitzel 0]

I guess I dont understand what your saying from what I know already. I have used 12v,18v, and 24v and non will power the device. It is a 802.3af compliant injector along with the cams I am using I assume"waiting to hear back still". You say that "MikroTik uses a 24VDC input voltage and calls it POE, which is pretty dangerous in my opinion. I have seen people plug in 802.3af compliant switches to these devices and kill them instantly. I wish they would stop doing this stupid stuff and follow the standard!" but why would someone plug switches into injectors? Also the 24v etc is a output voltage not a input voltage. Kind of lost with these 2 posts. I am however still wanting input from you that can help me and possibly others as well.

[darikweitzel 0]

By regular poe switch, I mean one that doesn't say 24 volt.

here is a poe switch that has 8 ports with 4 of them providing poe

http://www.newegg.com/Product/Product.aspx?Item=N82E16833156229&cm_re=poe_switch-_-33-156-229-_-Product

 

Even if your camera doesn't truly support poe, you can use poe with a splitter and use the poe power converted to 12 volt (or a couple of other selectable voltages if needed) and jacked into your cameras power jack

http://www.neweggbusiness.com/product/product.aspx?item=9b-33-980-028

 

I use one of these for powering a small wireless switch when setting up cameras. it works great

 

 

I may end up trying this out actually. I sent the cam to the manufacture and also sent in my poe injector with 12v power supply so they can test it out. They state it should work without any issues. They are suppose to let me know also what pairs the voltage rides on as well incase I just need to swap pairs around to power the cams. I know Mikrotik uses I think pairs 4,5 positive and 7,8 negative. The cam doesnt state what it uses. If all else fails, I will just wire the pos-neg from the cat5e to the female plug of the power supply and plug into the cam.

[ssnapier 0]

Yeah I phrased it wrong with the MikroTik stuff. What I meant to say was that they were powered with a normal 48VDC power supply and BOOM... dead MikroTik device. Are you clear on the rest of it though?

[darikweitzel 0]

So I have found possibly why it wasnt working after all this time. I still have not received my cams back yet but its in the mail. After GW Security could not help me, I finally found what pairs they send power on. Their cams and poe switches/injector use pairs 1236 for powering and 4578 for data. This was why non of my injectors would work because my injectors used pairs 45+ and 78-.

[darikweitzel 0]

Got my cam back and still cant power my cam with a change in configuration of my ethernet. Not sure why it still wont work.... My cam power pins are 12+ and 36-. My poe injector is pins 45+ and 78-. What i did with my ethernet cable was wired

poe side of pins= 1.wo 2.o 3.wg 4.bl 5.wbl 6.g 7.wbr 8.br and

camera side of pins 1.bl 2.wbl 3.wbr 4.wo 5.o 6.b 7.wg 8.g

 

does this look like how I should wire it to make that poe injector power the cam?