Doc.-ID: 160319-PT08BA-TG-ExCam IPQ1775 series_en_rev.01.docx, Seite 19 von 40
In case the camera disposes of a plug, (figure 6.4), it has to be plugged into the RJ45
PoE slot of the network device. Due to the design, a faulty connection or pin assignment
is not possible. The network device can already be supplied with power, prior to connect-
ing it to the camera, hence there is no „power ON“ priority which has to be observed.
In case the ExCam IPQ1775 disposes of a terminal block termination, the correct con-
nection of the individual pins in accordance with EIA/TIA-568B has to be observed (q.v.
table 6.2). Generally, the pins of the same color code are connected.
Attention: The general specification for PoE allows different operation modes for PDs
(ExCam IP1354, ExCam IP1355, ExCam IPQ1775 etc.):
Mode A (end span): This is usually used by switches; the supply voltage is executed as
phantom power on the data lines. Both polarities are possible.
Mode B (mid span): This is usually used by PoE injectors; the power supply and protocol
transfer is executed on separate pins (plug / pin contact 4.5 is the positive pole and 7.8 is
the negative pole). The T08 ExCam series supports both modes and the used power
source (PSE) determines the mode.
For executing a reboot, it is possible to separate the ExCam IPQ1775 from the network
and to switch it on again while in operation or in interaction with a visualization system
(hot plugging).
Attention: „Hot plugging“ as well as the connection and separation of the data and
power cable SKDxx with/of network devices and terminal blocks under power is
only allowed within the safe area (non-hazardous atmosphere)!
The pin assignment of the SKDxx according to EIA/TIA-568B standard for 100BaseTX
with PoE (IEEE 802.3af) is done as follows:
Pin / Potential
Color
SKDxx
(IEC60757)
Plug /
pin contact
(TIA-568B)
Cross sec-
tion area
Remarks
Mode A
Mode B
Tx+ / PoE ±48 VDC Tx+
WH / OG
1
0.32 mm
2
Solid conductor
Tx- / PoE ±48 VDC
Tx-
OG
2
0.32 mm
2
Solid conductor
Rx+ / PoE GND
Rx+
WH / GN
3
0.32 mm
2
Solid conductor
n.a.
PoE +48 VDC
BU
4
0.32 mm
2
Solid conductor
n.a.
PoE +48 VDC
WH / BU
5
0.32 mm
2
Solid conductor
Rx- / PoE GND
Rx-
GN
6
0.32 mm
2
Solid conductor
n.a.
PoE GND
WH / BN
7
0.32 mm
2
Solid conductor
n.a.
PoE GND
BN
8
0.32 mm
2
Solid conductor
shield/ GND
(complete conductor bunch)
BK
9
2.5 mm
2
Shield braid of
tinned copper
wires Ø=0.13 mm
(AWG 36)
shield
(single, twisted pair pins)
n.a.
n.a. / 10
n.a.
Aluminum synthe-
tic strapp, twisted
Table 6.2
– Pin assignment SKDxx and plug contact RJ45
