Poe

Opeth

Getting the hang of it
Sep 15, 2019
214
36
Cyprus
Hi sorry if this is a stupid question but first time i will use ptz. I will use ptz dahua 22w poe+ and i have nvr4104-4p-4ks2. Is it ok to connect the ptz to nvr? The other cameras are lower watt so can use 22 for ptz but it is poe+ the ptz.
 
for a nvr4104-4p-4ks2 /nvr4104HS-p-4ks2

PoE: Max 25.5W for single port, 48W in total. You are on the very edge depending on what your other cameras are ?
Please provide all details, make and model numbers of all cameras.

 
The IEEE802.3at specs state that 25.5W can be delivered to the end point so presumably the port will consume more which will make the situation even worse as more than half of the total W allowance of the NVR will be consumed by a single device!
 
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From my experience running anything at max or near max load is going to lead to problems and that's assuming that the device is actually capable of delivering a sustained max load. You'll also be stressing the components to within an inch of their life.

If it was me I'd personally not take the risk and would get a decent external POE+ switch and power the PTZ from that.
 
Ok if i use a poe injector to power the ptz but i want to be added to nvr i must desable or something the poe from nvr?