4.4.2. Power via PoE
The GT7.3x27 requires a power supply between DC 12 and 24 V that complies with SELV (Safety Extra-Low Voltage) and LPS (Limited Power Source). With the PoE functionality of the GT7.3x27 it is possible to use the Ethernet network cable to supply the device with power.
Note
See Network connection via Ethernet LAN for information on the Ethernet wiring required for power supply via PoE.
Consider the following requirements for PoE switches when powering the terminal via PoE:
Must comply with IEEE 802.3af
Power class: 0
Min. 15.4 W per PoE port
Total power budget: min. 15.4 W x number of ports
Be aware that some PoE switches do not transmit the supply voltage on separate wires (DC+ and DC-) but superimpose it on the transmit and receive lines (RX+/- and TX +/-). In this case, the terminal is supplied with voltage even if only RX and TX are connected.