Add a siren into NVR DS-7616 NVR

[babybenz]

Hello everyone,
I have a HIKVISION NVR, model number DS-7616NI-I2 running latest firmware (4.61.030) with 4 Alarm Input and 1 Alarm Output. the port has 1 and G.
I have a simple siren running on a 24V DC power adapater. I am told that the Alarm output port on the NVR is a Normal Open (NO) and will be triggered by the configuration of the Events in the NVR accordingly
What I want to achive:
In the smart event, I will enable "instruder detection of the camera, draw an area of active, then have it alarmed. If someone walk into the area, it will trigger the siren (Alarm Output A <-1)
So I connect the siren to the NVR and Power adapter per following
(+) siren to (+) power adapter
(-) siren to (1) in the Alarm output port on NVR
(G) in the Alarm output port on NVR to (-) power adapter
When I plug in the power adapter, the siren goes off right away and stay on until unplug. It looks like the Alarm output port (1 and G) does not do anything, just let the power pass through... There is some wrong with the NVR Alarm output port? Do I need to connect a resistor (like the one in those fire/security panel)?
So, I am now just half-way now
Anyone who has done this before, please advise?
Thank you very much

 

[alastairstevenson]

I am told that the Alarm output port on the NVR is a Normal Open (NO) and will be triggered by the configuration of the Events in the NVR accordingly

Yes, but it's not designed for power switching, like the raw power feed to a siren.
It should be used to feed a relay driver which then controls the siren.
You've probably overloaded and shorted the NVR output by applying 24v via a siren to it.

Suggestion - check out the Alarm output to G with the ohms measurement of a multimeter (- lead to G) to see if it still functions from NVR events, going from open circuit to closed.

 

[babybenz]

Yes, but it's not designed for power switching, like the raw power feed to a siren.
It should be used to feed a relay driver which then controls the siren.
You've probably overloaded and shorted the NVR output by applying 24v via a siren to it.

Suggestion - check out the Alarm output to G with the ohms measurement of a multimeter (- lead to G) to see if it still functions from NVR events, going from open circuit to closed.

Thank you for your tips. The multimeter does show that the NVR pickup the signal and send it to the Alarm output port (1 and G). So, it maybe what you said, I may have overloaded it with 24V DC adapter. Should I just order a 12V DC ones and try? Or, as you mentioned, what type of relay and setting I should get for this?
And, do you happen to know the voltage of this Alarm Output port? Is it powerful enough to run a relay (3V, 5V, etc...)?

 

[Alaska Country]

Find out what the current and voltage limits are for the alarm output on your NVR. Some use a NO SPST internal relay for switching applications. Often these are dry contact. Other times they provide power say 12 VDC at 200 mA.

A SSR (solid state relay) can be used to switch on/off an external device. These are rated in the range of 5 to 36 VDC input voltage with low current requirements. i.e. often in the 5 mA range or so. Thus a NVR will trigger the input side which in turn will turn on/off an external device which is connected to your 110 VAC line with the siren in series with that circuit. Thus the output side can switch your mains at 110 VAC to power the wall wart to run your siren.

This site may have addition helpful information.

How-to: - How do I set up an alarm to work with an external device on my Hikvision NVR?

We often have customers ask us “how do I get my new NVR to work with an existing alarm system I already have installed” or “how do I connect something to the IN/OUT ports of my NVR?” Indeed, for such an important feature for the NVR’s to have, it is not the most straightforward to get set up...

www.use-ip.co.uk

 

[TonyR]

I use these ==>> HiLetgo 2pcs DC 12V 2 Channel Relay Module with Isolated Optocoupler High and Low Level H/L Level Trigger Module Triggered by DC 12V

 

[babybenz]

You are all rockstar! I finally make it work. I happen to have 12V DC power adapter and it just perfectly power the siren, not overloaded it!
Just a quick question. In the NVR, I set the "intruder detection" and draw a region. I tested it by stepping inside the region. The alarm goes off as expected however, it only last for about 5-10 seconds and while I am still inside the region, the alarm stop blasting the sound. Is there a way to keep it on until the object (me) move out of the region?
Or, is there a work around?

 

[babybenz]

If I set the Alarm Input "Delay" to the desired length of times (in second), it will blast the siren for that amount of time (up to 2 mins preset or you can manually turn off the siren). Not 100% what I wants (real-time) but at least we get enough time to recognize the siren. Do you have any other way?

 

[babybenz]

I use these ==>> HiLetgo 2pcs DC 12V 2 Channel Relay Module with Isolated Optocoupler High and Low Level H/L Level Trigger Module Triggered by DC 12V

View attachment 198365

Would you mind sharing how you wire this board to the siren, nvr output and 12 DC power adapter?

 

[TonyR]

Would you mind sharing how you wire this board to the siren, nvr output and 12 DC power adapter?

Yes, no problem; just got in, been running CAT-5e in a doctor's office since 0830 CDT so their wireless workstation will connect faster with their server. I'll find it and post it.

 

[TonyR]

I could not find it...must have been on a PC that was hit by lightning 2 years ago. Anyway, I found a similar drawing and modified it....that took a while.

The only thing missing is a jumper that depends on your application: Since you're using a 12VDC siren, jumper the + of the 12VDC power supply to a relay common of your choice. See EDIT below.

Whether you use the relay's NC or the NO contact depends on where the trigger shunt is placed:

• On HIGH as shown if the NVR opens its output upon alarm condition
• On LOW if the NVR closes its output upon alarm condition.

EDIT 7/13 @1825 CDT: I was in too big of a rush modifying someone else's nice schematic when I later realized that no way would I have wired the circuit like that so I made a fresh drawing from scratch and deleted the previous one. Also added link to the single channel (one relay) version as depicted above here.

 

[TonyR]

Would you mind sharing how you wire this board to the siren, nvr output and 12 DC power adapter?

NOTE post #10 ^^^ with corrected schematic.

 

[babybenz]

I could not find it...must have been on a PC that was hit by lightning 2 years ago. Anyway, I found a similar drawing and modified it....that took a while.

The only thing missing is a jumper that depends on your application: Since you're using a 12VDC siren, jumper the + of the 12VDC power supply to a relay common of your choice. See EDIT below.

Whether you use the relay's NC or the NO contact depends on where the trigger shunt is placed:

• On HIGH as shown if the NVR opens its output upon alarm condition
• On LOW if the NVR closes its output upon alarm condition.

EDIT 7/13 @1825 CDT: I was in too big of a rush modifying someone else's nice schematic when I later realized that no way would I have wired the circuit like that so I made a fresh drawing from scratch and deleted the previous one. Also added link to the single channel (one relay) version as depicted above here.

View attachment 198434

Can't wait for the piece to arrive to try... Thank you very very much for your effort and details