Installed the AVR-812 8 channel

[ejhines 0]

I am new to cctv, the unit setup without problems, and I am in the process of installing 4 cameras with it.

1. The IR camera setup without problems (camera 1, 12v)

2. The Dome camera setup without problems (camera 2, 12v)

 

3 Still have two Box cameras to install (24v)

- tested with just the camera with success.

 

- mounted the first in the outdoor enclosure (also requires 24v -fan/heater)

- AC2420 Power Supply didn't supply power)

- tried 2nd AC2420 Power Supply, it stopped working also)

 

- I had been told to:

- combine the wires from the dc power cable into two bundles of 3 wires:

- power from rg59 combo cable

- power to enclosure (fan/heater)

- power to camera

 

any idea why it is blowing the power supply?

 

Thanks for any suggestions.

 

Estel J Hines

[scorpion 0]

You did not mention what kind of wiring you are using.

 

From what you posted, I get the idea that you may be using Cat 5 cable, and this is why you are "bundling" several pairs together.

 

How close am I?

[ejhines 0]

I am using rg59 combo cable.

 

- I tested the box camera first by just connecting the two wires of the power cable to the two screws on the box camera (24v). It worked without problems when I did this.

 

- when I put the camera in the weather enclosure, in order to supply power to the enclosure (fan/heat 24v) I had to run to wires to the enclosure also, so that required that i bundle the two sets of three wires, so i could run power to the camera as well as the enclosure.

[scorpion 0]

I am sorry. I am having a hard time understanding two sets of three wires.

 

does this mean that you have 6 conductors?

 

If the first power supply failed, and the second power supply failed then there is def a problem.

 

I do not know how you are wiring everything, but it sounds as if you are running each "product" with it's own set of wires. One -, and one +. (Yes I know it is AC. OK change that to one red, and one black wire).

 

 

- I had been told to:

- combine the wires from the dc power cable into two bundles of 3 wires:

- power from rg59 combo cable

- power to enclosure (fan/heater)

- power to camera

 

It sound like you need only two power wires. One wire for the 24 AC for the Camera, and one wire for the fan/heater at 24 volts AC.

 

 

The power supplys have failed due to a short, or an AC and DC cross connection. It may be that the the wiring is allowing the voltage to go to ground. It may not be in the wiring per se, it may be that the voltage flows to a chassis ground of a product therefore "creating" a short.

 

How are you getting your 12 volt DC from you AC power supply?

 

How is the system wired? Can you paint me a picture?

 

You should have a 24 AC to 12 Volt DC converter at the Domes, and the one Bullet, so that you can power the camera from the 24 volt AC source.

 

 

If you are running two separate wires one for the 12 volt cameras, and one for the 24 volt AC cameras then you should also have two power supplys, or a combo type power suppy that provides both voltages, and respective AC, and DC.

 

Note: I do not know the brand of your power supply, and I an not familiar with the specifications.

Edited April 6, 2008 by Guest

[ejhines 0]

ok, and thanks for sticking with me on this.

 

The camera is a (24v)box camera that has two screws for power to be supplied. When I first tested it i just connected the two wires from the power combo cable onto the two screws and it worked fine.

 

Now I am going to add the enclosure (24v)

 

1. i start with the two wires (that have the power) from the combo cable

2. now i add the two wires (short length of wire) from the camera to the combo cable wires

3. I then add the two wires (short length of wire) from the enclosure to the two bundles of wires

 

This is the way I am attempting to supply power to both the camera and the enclosure.

 

perhaps my wording of "bundles" is wrong, if so, sorry about that.

 

Thanks for hanging in there with me

[ejhines 0]

1. the IR camera which is working fine, has its own 12v power supply, plugged into a surge protector.

2. The dome camera which is working fine, has its own 12v power supply

 

My problem camera is the "box" camera, which has a 24v AC2420 power supply plugged into a surge protector. and i am trying to supply 24v to both the camera and the enclosure.

[scorpion 0]

Now I understand! You are describing the connection inside of the enclosure.

 

I do not see anything with how you are describing the wiring setup.

 

Now to troubleshooting.

 

I doubt the fan, or the heater is kicking in right now. This means only the camera is "sipping from the well". Everything should work! HMMMMM???

 

If your climate is cold enough to trigger the heater then it may be possible that the heater is "sipping too much from the well". OK! It is hogging the whole well. If this is the case it can "fry" the power supply.

 

This sounds like the most likely situation. If it is too hot then trade the fan idea with the heater idea. Same results if the Fan is sipping more than it's fair share.

 

I need the specs on the power supply, and I need to know how long the wire run is from the power supply out to the cameras.

[scorpion 0]

I am curious? Can you unplugg (cut the wires to the fan/heater)?

 

With just the camera, and the camera only does the system work?

 

There may be a wiring issue that we might have to find.

[ejhines 0]

I have two box cameras that are exactly the same.

I also removed the camera from the enclosure.

 

I have tested both these cameras with just the camera connected, which was working for both of them previously, (they both have a power light, that lights up when they are receiving power), but, neither shows a power light anymore. (i suspect do to both the 24v power supplys being fryed?)

[scorpion 0]

Yes, we will have to stop troubleshooting with live 24 AC if the box is down.

 

I read where you tested the cameras prior to the installation. This tells me that the cameras worked "out of the box.

 

If we can get a new power supply, and if you can hire someone to take a look at the wiring prior to turning on the power supply then you can save blowing a third power supply.

 

If the power supply is good, but it has shut itself down for protection reasons, then we can try to eliminate the problem that is shutting down the power supply.

 

If you cannot hire someone to take a look at the wiring then do you have a "buddy" that knows electronics that can verify that the wiring is correct?

 

By removing the heater/fans, and trying to run only the cameras, then we can see if we are actually getting 24 AC to the enclosure. If the cameras work then we are good to go at stage "one". If we add back in to the mix the heater/fan, and everything works, then you are good to go.

 

If the cameras go down then the heater/fan is the issue. Now we know where to look for our problems.

 

Then again you may have a crappy power supply!!??

[ejhines 0]

When I bought the original setup, I received the power supply 24VAC-20VA, but i did not order the enclosures at that time. After I finished testing the cameras and was satisfied i ordered the enclosures.

 

I noticed that they have the AC2420 which I received, but they also have one called the AC2440 ( I assume 24VAC-40VA), I guess it is possible that with the enclosure added I need the more powerful one (AC2440) and the salesman just missed that I had the smaller version?

 

Once again, thanks for your help.

 

Estel J Hines