SMA SSM-U-1615 - Manual (Page 38)

• To connect the communication input, connect all eight conductors of the Ethernet cable to
the electronic assembly at terminal X9 (see Section 4.4, page 17) according to the
following table. Trim any overlapping conductors.
Signal Terminal
X7 and X9 EIA/TIA 568B (eight-conductor)
Insulated conductor color
TX+ 1
(white/orange) white/orange
TX- 2
(orange/white or or-
ange) orange/white or orange
RX+ 3
(white/green) white/green
not assigned 4
(blue/white or blue) blue/white or blue
not assigned 5
(white/blue) white/blue
RX- 6
(green/white or
green) green/white or green
not assigned 7
(white/brown) white/brown
not assigned 8
(brown/white or
brown) brown/white or brown
5. Ensure that the Ethernet cables are securely connected.
6. Attach the Ethernet cables to the strain relief in the DC subdistribution using a cable tie.
7. Connect the Ethernet cable for the communication output in the inverter (see inverter manual)
or in the next DC subdistribution in the communication bus.
8. Secure the Ethernet cables to the external cable support rail.
6 Installation SMA Solar Technology AG
Operating Manual SSMUXX15-BE-en-10 38