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Connection
6.2 Power supply
SCALANCE W1788-x / W1748-1
64
Operating Instructions, 03/2022, C79000-G8976-C484-05
Position and pin assignment
①
M12 interface, direct feed in, A-coded, 4-pin
②
M12 Ethernet port P2 LAN PoE, X-coded, 8-pin
The power can also be supplied via this interface (Power over Ethernet).
Pin assignment, see Ethernet (Page 66)
③
M12 Ethernet port P1 LAN, X-coded, 8-pin
The four-pin M12 socket has the following pin assignment:
Pin
Signal
Assignment
1
L1+
24 VDC
2
L2+
24 VDC
3
M
Ground
4
M
Ground
Connecting/disconnecting the power supply
WARNING
Danger from electric shock
Turn off the power supply before you insert or remove the plug of the power supply.
1.
Connect the plug and socket. Make sure that they lock in place correctly.
2.
Tighten the knurled screw (tightening torque 1 Nm).