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7.2
Power supply
Connecting the power supply
The power supply is connected using a 3- or 4-pin plug-in terminal block. Usable cable cross-
section 0.25 to 2.5 mm
2
. Permitted tightening torque 0.57 - 0.79 Nm (5 - 7 in.lb.).
The power supply is non-floating. The signal cables of the Ethernet TP ports are floating.
Note
Removing or inserting the power supply with the power on is not permitted.
Coding
With the SCALANCE X204RNA EEC the supplied plugs and the socket on the device for the power
supply match in their coding.
The plug and socket for the signaling contact are coded differently from the connection of the
power supply. The plugs for power supply and signaling contact cannot therefore be
interchanged.
You can use non-coded plugs in coded sockets and coded plugs in non-coded sockets.
Pin assignment
Pin number
Pin assignment of the SCALANCE X204RNA (PRP
and HSR)
Pin assignment of the SCALANCE X204RNA EEC
(PRP and HSR and PRP/HSR)
Pin 1
L1 +24 VDC
PE
Coding of the socket
Pin 2
M1
L1 +24 V … +250 VDC
L1 100 V … 240 VAC
Coding of the plug
Pin 3
M2
N1
Coding of the socket
Pin 4
L2 +24 VDC
-
Note
Since the SCALANCE X204RNA EEC does not have a redundant power supply, connect the power
supply between L1 and N1.
Connecting up
7.2 Power supply
SCALANCE X-200RNA
Operating Instructions, 04/2022, C79000-G8976-C342-07
73