July 26, 2024
Background
Power over Ethernet(PoE) now is popular now due to its easy availability and affordable prices.
And as technology evolves, more and more IP-based devices are supporting PoE protocols.
This article is about to introduce some PoE-related queries based on the users.
It will expand to different aspects of PoE issues.
Discussion
Devices | Application | |
Home Users |
VoIP phones Wireless IPs Routers IP cameras |
Those IP-based units are well serving small-area monitoring and networking transmission. Cost-effective PoE switches are required to support the easy cabling and use. |
Professional Users |
PTZ cameras High-performance WAPs Digital signage Facility monitoring controls |
It usually involves public facilities when those high-performance PoE devices are in function. Stability and durability is crucial. In most cases, specialists are sent to handle connection, and cabling for better stability |
Based on this, let's look at some common questions in a PoE system.
For different powered devices, the required power budget significantly varies.
1. First you need to get the specification manual of your device
Look at the power it requires.
Take Hikvision camera DS-2DE5220IW-AE for example.
To be receiving power from a PoE switch or PoE media converter, the powered device has to support PoE protocols, it often goes IEEE 802.3af or IEEE 802.3at in the power description.
Here there is just 24V(non-standard PoE), so it cannot be powered directly/
To avoid this, Olycom has developed a powerful a voltage auto-sensing PoE network switch OM728W-PSEA-GE.
Its 8 port 10/100/1000Mbps adaptive RJ45 supports active IEEE802.3af/at and passive 24V PD.
So it could be powered if you have an Olycom model OM728W-PSEA-GE without extra accessories or trouble.
2. Calculate the maximum power your device needs, sometimes it directly shows the value.
You still need to look at the power description, and get the values of input voltage(typically 12V/24V/48V) and ampere to start the devices.
Power=Voltage times Ampere
Then the power budget for the devices is available,
After getting the power budget number, you need to choose an affordable PoE switch.
On the market now, there are industrial and commercial-grade switches with different specifications.
Lets still do an analysis for different users.
Type | Fiber | Network | PoE Port | Cost | Usage | |
Home Users | Commercial | Usually no need | 100M/1000M/2.5G | 4&8 | Cheap | Plug-and-Play, without extra configuration |
Professional Users | Industrial | Usually need 1G/2.5G/10G or higher |
100M/1000M/2.5G/10G | 4&8&16&24&48 | Expensive | Complicated, need professional configuration |
Conclusion
We focused on some simply PoE queries based on different users and concluded some useful points before selecting and using a PoE device.
Olycom has been focus on CCTV security solutions and manufacturing fiber optic devices.
Please come to us if you have any queries or product requirements.