5. Power over Ethernet (PoE)
The
PoE
feature employed in DN9131 is available in model DN9131-4. The standard
units for power via 12VDC are models DN9131-1. For the detailed information, please
see Data Sheet on Series DN9131, 1 Channel Encoder/Server.
5.1. PoE compatibility
With non Power Sourcing Equipment (PSE)
When it is connected with non PSE, the power adaptor should be connected.
With power adaptor
Connecting both PSE and power adaptor does not do any harm to the products.
Disconnecting power adaptor while it is operating does not stop operation. The
product continues to work without rebooting.
5.2. Power classification
The PoE Power Class supported by DN9131 is Class 0.
Table 1 shows IEEE 802.3af power classes.
Class
Usage
Minimum Power Levels
Output at the PSE
Maximum Power Levels at
the Powered Device
0
Default
15.4W
0.44 to 12.95W
1
Optional
4.0W
0.44 to 3.84W
2
Optional
7.0W
3.84 to 6.49W
3
Optional
15.4W
6.49 to 12.95W
4
Reserved for Future
Use
Treat as Class 0
Reserved for Future Use
Table 1. IEEE 802.3af PSE and Powered Device Power Classifications
