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Need some help connected a DC power supply for a surveillance system.

Need some help connected a DC power supply for a surveillance system.

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  #1  
Old 02-22-13, 02:10 AM
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Join Date: Feb 2013
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Need some help connected a DC power supply for a surveillance system.

Hi, my mother bought this cheap surveillance system and wants me to set it up.

Quick specs:
4 cameras which each have a coaxial cable and power cable for 12V DC
A DVR which also takes 12V DC
A 60W SPD power supply with 12VDC 5A output.

Now either somebody lost the manual for the power supply or there wasn't one so I'm really stuck at this part.

This is the link to a pic of the power supply in case:
SOPUDAR MODEL SPD-50W

The 7 connectors on the front of it are labeled and grouped as follows:

------------
1: L (AC)
2: N (AC)
------------
3: ground
------------
4: COM
5: COM
6: +V
7: +v
------------

After a good few minutes I finally realized the first three are for the AC power source, live, neutral and ground. That means the last four must be for the DC supply. Problem is I barely now the difference between AC and DC let alone how to connect it.

I did spend some time googling and came across a manual for another power supply from another manufacturer that similar to this with the keyword "powersupply spd manual" and learned spd is a type of power supply called a switching powersupply but have yet to learn what that means exactly. I found out the com com is most likely referring to -V -V because that's how the other PS was labeled.

The power cable extending from the camera has a black and red wire.

Question:
How do I connect the four cameras to the power supply and is it possible to also power the DVR with the same power supply.
 
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  #2  
Old 02-22-13, 05:42 AM
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Location: Near Buffalo, NY
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You have the AC connections (1 = hot, 2 = neutral, 3 = ground).

The COM (zero DC) and +V (+12 volt DC) connections divide the load. Sometimes simply paralleled, but other times individually fused. I would connect the cameras to one and the DVR to the other.
 
  #3  
Old 02-22-13, 06:53 AM
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Thanks Rick

I couldn't wait any longer so I just ended up connecting the black wire to the COM (zero DC) and the red to the +V and it worked, luckely. I only have two cameras atm so connected each separately and had a 12V DC adapter lying around from a tv decoder we don't use so I used that to power the DVR. Although still good to know an alternative.

When we get the other cams up I'll do it like that instead.
 
  #4  
Old 02-22-13, 08:55 AM
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That power supply should be able to handle the four cameras and the DVR.
 
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