A Siemens power insert can also be used as the interface for the power input. Since a power
insert supports a power supply of 24 VDC, it does not conform with 802.3af or IEEE 802.3at.
The following restrictions relating to the use of power inserts should be noted:
WARNING
Operate the power insert only when the following conditions apply:
● with extra low voltages SELV, PELV complying with IEC 60364-4-41
● in USA/CAN with power supplies complying with NEC class 2
● in USA/CAN, the cabling must meet the requirements of NEC/CEC
● Power load maximum 0.5 A.
Cable lengths
Table 2-1
Permitted cable lengths (copper cable - gigabit Ethernet)
Cable type
Addition
Permitted cable length
IE FC TP Standard Cable GP 4x2
(AWG 24)
with IE FC M12 Plug PRO 4x2 (X-
coded)
0 to 90 m
IE FC TP Flexible Cable GP 4x2
(AWG24)
with IE FC M12 Plug PRO 4x2 (X-
coded)
0 ... 70 m
IE TP Train Cable GP 4x2
(AWG 24)
with IE FC M12 Plug PRO 4x2 (X-
coded)
0 ... 100 m
Table 2-2
Fitting connectors
PIN
Color of the
wire
CAT5
Color of the
wire
CAT6a
Use
Power over un‐
used wires
(10/100 Mbps
only)
Phantom power
1
Yellow
Green/white
Data
Data/power
2
Orange
Green
Data
Data/power
3
White
Orange/white Data
Data/power
6
Blue
Orange
Data
Data/power
4
Blue
Power
unused at 10/100 Mbps
5
Blue/white
Power
unused at 10/100 Mbps
7
Brown/white
Power
unused at 10/100 Mbps
8
Brown
Power
unused at 10/100 Mbps
LEDs for PoE on the SCALANCE W1700 device
When the SCALANCE W1700 device is supplied by PoE, the green "PoE" LED is lit on the
SCALANCE W1700 device.
Description
2.9 Power over Ethernet (PoE)
SCALANCE W1780/W1740 according to IEEE 802.11ac Web Based Management
Configuration Manual, 11/2019, C79000-G8976-C485-03
27