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Topic:
Cutting off POE Cameras
This thread has 22 replies. Displaying posts 1 through 15.
Post 1 made on Tuesday October 5, 2021 at 11:50
Greg C
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Have a client who wants to be able to turn off recording on their IC Realtime NVR. My thought is instead of connecting the cameras directly to the NVR, we connect it to a POE Switch that we can power on and off using an OVRC Outlet and a button on their Crestron TP. Any reason to not do this? It's only 3 cameras.
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Post 2 made on Tuesday October 5, 2021 at 19:02
Daniel Tonks
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So this has to be manual control vs scheduled?
Post 3 made on Tuesday October 5, 2021 at 19:06
johnmax
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Instead of cycling power to the switch I would get a switch that you can enable/disable POE on the needed ports via integration from the Crestron processor. No need to keep cycling the outlet and possibly damaging the switch.
Post 4 made on Tuesday October 5, 2021 at 22:35
Mac Burks (39)
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I like Johnmax's solution.

This is what came to mind when i read your post. 3 outlet Wattbox with 3 POE injectors. [Link: snapav.com]
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Post 5 made on Tuesday October 5, 2021 at 23:02
dsp81
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[Link: altronix.com]
[Link: altronix.com]

PoE injector with a trigger. Top for 10/100, bottom for 10/100/1000.
Post 6 made on Wednesday October 6, 2021 at 09:23
highfigh
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So, the NVR doesn't have a scheduling function in the setup, as found in DVRs? Really?
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Post 7 made on Wednesday October 6, 2021 at 20:17
buzz
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I'd be reluctant to regularly switching power on PoE devcies because I doubt that they were designed with this in mind and this could result in premature EOL issues. With respect to the cameras, there could be some condensation issues.

NVR scheduling would be great. Second would be throwing some sort of "wrench" into the network data connection, but this could generate a flurry of notices -- as could PoE switching.
Post 8 made on Wednesday October 6, 2021 at 21:13
Ernie Gilman
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On October 6, 2021 at 20:17, buzz said...
regularly switching power on PoE devcies...

Good point. They undoubtedly did not design and build these things to optimize switching life in the thousands of actions!

It's not unusual, though, to not be aware that this could be an issue. I've heard from more than one electrician that breakers were not made to be used as on-off switches, but sure as I'm standing here, the power company that made an ad for California Flex Alerts shows a woman throwing more than a dozen breakers as her means of lowering her power usage.

NVR scheduling would be great. Second would be throwing some sort of "wrench" into the network data connection

Are you suggesting throwing a wrench into things as the means of switching? I ask because I don't believe you'd do that.
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Post 9 made on Wednesday October 6, 2021 at 23:47
davidcasemore
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On October 6, 2021 at 21:13, Ernie Gilman said...
I've heard from more than one electrician that breakers were not made to be used as on-off switches,

If a circuit breaker has the initials "HID" or SWD" printed on them, they can be used for switching lighting loads.
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Post 10 made on Thursday October 7, 2021 at 02:37
buzz
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On October 6, 2021 at 21:13, Ernie Gilman said...
Are you suggesting throwing a wrench into things as the means of switching? I ask because I don't believe you'd do that.

I was suggesting that one could enable or disable the network connection through a switch port configuration. And, you are correct, this might not be a good idea either.
Post 11 made on Thursday October 7, 2021 at 17:37
Rob Grabon
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If they were each powered with an injector, and the three put on their own network switch, and static IP set, they really wouldn't care if the switch between them and the NVR got unplugged.

The cameras would stay powered, and the NVR would show as no signal from those cameras. When the switch turns on, the cameras are already running, and the NVR should reconnect and record as usual.
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Post 12 made on Thursday October 7, 2021 at 20:03
buzz
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Would the NVR start shouting "disconnect", "disconnect", "disconnect", ... ?
Post 13 made on Thursday October 7, 2021 at 20:57
highfigh
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On October 7, 2021 at 17:37, Rob Grabon said...
If they were each powered with an injector, and the three put on their own network switch, and static IP set, they really wouldn't care if the switch between them and the NVR got unplugged.

The cameras would stay powered, and the NVR would show as no signal from those cameras. When the switch turns on, the cameras are already running, and the NVR should reconnect and record as usual.

Why deal with an NVR being disconnected from a network and assuming it will reconnect properly, every time? Recording schedules are allowed to prevent this kind of problem.
My mechanic told me, "I couldn't repair your brakes, so I made your horn louder."
Post 14 made on Thursday October 7, 2021 at 20:58
highfigh
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On October 7, 2021 at 20:03, buzz said...
Would the NVR start shouting "disconnect", "disconnect", "disconnect", ... ?

"What are you doing, Dave? I can't let you do that".
My mechanic told me, "I couldn't repair your brakes, so I made your horn louder."
Post 15 made on Friday October 8, 2021 at 10:02
SWOInstaller
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My thoughts on this since we don't know the whole story.

Customer doesn't want cameras to recorder at certain times which is fine, but do they also not want to cameras ON? This is where utilizing the schedule or power cycling the cameras is in question. Just because the camera isn't recording (utilizing the schedule) doesn't mean someone could be watching it live which may be what the customer is not wanting.

If they don't want the cameras on at all, I would get something in writing stating that continuous power cycling of the camera/s is not recommended and can cause failures to the unit which will not be covered under warranty. You may also run the risk of lens fogging, moisture buildup depending on where you live when the camera is Off due to no heat within the unit to evaporate the residual moisture.
You can't fix stupid
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