Installation Guide ROQSTAR
Document no. 130- 106.44 11/2017 ENG
Page 8 of 16
3.2.
Anschluss Power Port
The Ethernet Switch can be powered by only V1 or V2 or redundant with V1 and V2. The power
supply for PoE function is V1 only.
Pin
Name
Description
Image
1
V1
power supply 1, plus pole
2
V2
power supply 2, plus pole
3
FAULT
Fault Contact
4
FAULT
Fault Contact
5
GND
power supply common minus pole
3.3.
Connection of Ethernet ports
Pin
Allocation
Connection
PoE function
Image
1
TD+
Transmit Data +
0V
2
RD+
Receive Data +
+53V
3
TD-
Transmit Data -
0V
4
RD-
Receive Data -
+53V
4.
First start-up
4.1.
Default settings
The ROQSTAR PoE is an unmanaged Switch, therefore no configuration can be made. After wiring
the power supply connection the Switch transfers data on all Ethernet ports. The PoE function is
available on each port. As soon as a PD is connected and registered the PoE voltage is activated at
that port.
5.
PoE operation
5.1.
General
The PoE function is avaible about 10 seconds after the operating voltage is activated at V1. The
Switch provides a total power output of 60W. The PoE total power output is monitored by the Switch.
The PoE voltage is 53V. Is a PD succesfully registered then the voltage is activated on the respective
port and the PoE status LED lights up permanently.
5.2.
Power budgeting
The power budgeting is based on PoE classes. All combination of classes with a total power budget of
60W are supported. The PoE classes are defined as follows:
Class
Power from
Switch per
port
Power range at
PD, depends on
cable length
0
15.4W
0.44W
– 12.95W
1
4.0W
0.44W
– 3.84W
2
7.0W
3.84W
– 6.49W
3
15.4W
6.49W
– 12.95W
4
30.0W
21.90W
– 25.5W
If the total power budget is exceeded, the voltage on the registering PD device is locked. In this case
the PoE status LED blinks.
