Installation GRS103
Release
01
03/2022
51
The PoE power is supplied via the wire pairs transmitting the signal (phantom
voltage).
The individual ports (joint PoE voltage) are not electrically insulated from
each other.
The following values apply to the PoE supply voltage of the module:
To supply the module with PoE voltage you need an external power supply
unit.
Make sure that the external power supply unit you use to provide the PoE
voltage fulfills the following basic prerequisites:
Insulation requirements according to IEEE 802.3af/IEEE 802.3at
(insulation resistance 48 V DC output to “rest of the world” 2250 V DC
for 1 minute).
Output power <124 W and sufficient to provide the power for the
connected PDs.
Current limitation <5 A or a 5 A slow blow fuse.
Figure 27: Connecting the supply voltage via the 3-pin terminal block
1 - Fastening screw for functional earth
2 - Fastening screw for supply voltage: -
3 - Fastening screw for supply voltage: +
4 - Connection for functional earth
5 - Connection for supply voltage: -
6 - Connection for supply voltage: +
Rated voltage 48 V DC SELV
Minimum voltage 46 V DC
Maximum voltage 57 V DC
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