SMA SC 500U Installation - Manual (Page 43)

SMA Solar Technology AG
Installation Guide SC500U-IUS093411 43
7.3.2 Connecting the Sunny WebBox in the Sunny Central
1. Plug the W215 connector into the SMA COM
socket (B) of the Sunny WebBox.
2. Insert the power supply plug into socket (A) of the
Sunny WebBox.
7.3.3 Connecting the Cable to the Sunny WebBox
1. Route the cables separately from AC and DC cables. Draw the cable into the Sunny Central
(see section 6 "Attaching the Conduits" (page 35)).
2. Plug the cable into the Sunny WebBox's socket.
3. Plug the cable into the socket of the switch, router, PC or Laptop.
4. Close the Interface Cabinet of the Sunny Central.
7.3.4 Termination
To ensure sufficient signal quality of the RS485 data bus,
it must be terminated on both ends.
The Sunny WebBox is located at one of the end points of
the RS485 data bus.
• Mount jumper to J1A.
The jumper is mounted upon delivery.
Signal biasing (jumper J1B and jumper J1C)
To ensure sufficient signal quality of the RS485 communication bus, a bias must be connected to the
WebBox.
• Connect jumper to J1B and J1C.
Both jumpers are mounted upon delivery.
The network connection on the Sunny WebBox is marked
as displayed on the adjacent graphic. The same marking
for the network connections is usually to be found on your
switch, router, PC or Laptop. If this is not the case, please
refer to the switch, router, PC or Laptop manual.
A B
A