SMA SB 4200TL HC Multi-String - Manual (Page 54)

The Communications Interface SMA Technologie AG
Page 54 SBTLHCMS-IEN080411 Installation Guide
12. 1 Connection RS232, RS485, Radio Piggy-Back
This section describes the installation of the Piggy-Backs for the different Sunny Boy com-
munication systems. RS232 Piggy-Back (SMA-Order No: 232PB-MS-NR), RS485 Pig-
gy-Back (SMA-Order No:: 485PB-MS-NR), Funk Piggy-Back (SMA-Order No:
BEAMPB-NR).
1. Open the inverter as described in section 7. 1.
2. Guide the PG screw fitting over the communication cable.
3. Thread the cable through one of the cable feed-throughs (A) on the Sunny Boy.
Use one or two cable feed-throughs, depending on the type of cable. Use the right-
hand housing feed-through for the Radio Piggy-Back.
4. Screw the PG screw fitting onto the Sunny Boy.
5. Sheathe the cable inside the Sunny Boy using the silicon tube provided. The sili-
cone tube is imperative for safety reasons. The interface is not to be operated with-
out this silicone tube (with the exception of the Radio Piggy-Back).
6. Lay the cable in area (B) as shown in the figure to the right.
7. Ground the cable shield at the PE connector (C) if the connection diagram of the
communication device indicates this as necessary.
8. Connect the communication wires to the screw terminal strip (D) as described in
the terminal connection diagram of the communication device. Take note of the
conductors' color coding. The devices can be damaged in case the cables are not
connected correctly.
- Pin 2 Color:
- Pin 3 Color:
- Pin 5 Color:
- Pin 7 Color:
When opening the Sunny Boy, follow all the safety instructions as de-
scribed in section 3.
Electrostatic discharges are an acute danger to the Sunny Boy and to the commu-
nications interface. Ground yourself by touching PE before removing the commu-
nications interface from the packaging, and before touching any components
within the Sunny Boy.
Read the communication device manual before beginning installation work. Fur-
ther wiring details can be found there.