Etherbus Hardware Manual
Page 11 of 23
Last Revised: 17-Sep-13
Red Lion
Controls
331 Ushers Road
Ballston Lake, NY 12019
USA
+1-518-877-5173
Dual Injector
Power
The Etherbus Dual Injector accepts power in the range of 45 to 56 VDC (48 VDC nominal)
and can source 48 VDC power to two PoE devices. Make sure your 48 VDC supply is rated
for at least 16 Watts per PoE channel being sourced. Make your power connections as
shown in the diagram below.
There are two models of this injector:
The standard -2A model when sourcing PoE power will put out 48 VDC* (see note below) over
the unused pair of lines in the RJ45 connection:
o
V+ on lines 4 and 5
o
V- on lines 7 and 8
o
TX on lines 3 and 6
o
RX on lines 1 and 2
The -2B model (special order) when sourcing PoE power will put out 48 VDC* (see note
below) over the signal pair of lines in the RJ45 connection:
o
V+ on RX lines 1 and 2
o
V- on TX lines 3 and 6
o
Lines 4, 5, 7 and 8 are unused
DC Supply
(45 - 56 VDC)
+ -
EB-PSE-48V
DC Power Input
Chassis
GND
(panel)
+
* Note:
When the supply voltage is 45 to 47 VDC then the power output for the PoE will be
the same as the supply voltage. For example, if the supply volt age is 45 VDC then the PoE
output will also be 45 VDC. If the supply voltage is 48 to 56 VDC then the PoE output will
be regulated at 48 VDC.
