User Manual

Industrial Renewable Energy 4-Port 10/100/1000T
802.3at PoE+ Managed Ethernet Switch
BSP-360
90
APPENDIX A.
A.1 MDI Settings
The Medium-Dependent Interface (MDI or RJ45) serves as the data/power interface between Ethernet
elements. As such, it has two optional connection methods to carry the power. Named Alternative A & B,
Table 1 details the two power feeding alternatives.
Pin Alternative A Alternative B
1
Vport Negative
2
Vport Negative
3
Vport Positive
4
Vport Positive
5
Vport Positive
6
Vport Positive
7
Vport Negative
8
Vport Negative
Table -1 Alternative Table
Delivering power through an RJ45 connector’s center tap (“Phantom Feeding”) guarantees that bi-directional
data flow is maintained, regardless of a module’s power status.
A.2 Power Device Classification Values
Class PD Current – Classification Period
[mA]
PD Power – Operation Period
[W]
Note
0
0 – 4 0.44 – 12.95 Default
1
9 – 12 0.44 – 3.84 Optional
2
17 -20 3.84 – 6.49 Optional
3
26 – 30 6.49 – 12.95 Optional
4
36 - 44 12.95 - 25 Optional