Upgrading Or Modification Of The Sunny Boy Interface - SMA Sunny Boy 2000 Technical Description

The transformerless string inverter for photovoltaic plants
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Sunny Boy 2000
9-pin to 25-pin adapter
DB9
1
2
3
4
5
6
7
8
9
Table 6.1: Pin designation of the DB9/DB25 adapter

6.2.1 Upgrading or modification of the Sunny Boy interface

The Sunny Boy is prepared for data transmission. By simply plugging on a piggy
back module it supports the RS232 or RS485 interfaces or the Powerline protocol.
In order to install a new interface in the Sunny Boy a corresponding piggy back mod-
ule has to be installed on the system control board. Please follow all relevant instruc-
tions in chapters 3.3: 'Electric Connection' and 4: 'Commissioning'.
The Sunny Boy works with high voltages externally and internally
which can cause considerable harm to people. Only a qualified elec-
trician may work on the device, especially open it!
While upgrading the Sunny Boy interface the operator can get into touch both with
electronic components and components carrying lethal voltage. Faulty upgrading can
lead to damage at the device and danger to people by electric voltage.
Therefore the device may only be upgraded by qualified personnel or the SMA
service.
SB2000-11:EE
DB25
8
DCD (Data Carrier Detect)
3
RX (Receive Data)
2
TX (Transmit Data)
20
DTR (Data Terminal Ready)
7
GND (Signal Ground)
6
DSR (Data Set Ready)
4
RTS (Request To Send)
5
CTS (Clear To Send)
22
RI (Ring Indicator)
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Technical Description
description
SMA Regelsysteme GmbH

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