User manual

The wiring diagram of the RS485 bus is shown below.
1
2
3
4
5
5
5
RS485
RS485 RS485
Fig. 5: Wiring diagram
① External data logger
② First inverter
③ Inverter
④ Last inverter, terminated
⑤ Standard RJ45 cable (patch cable)
3.6.4 Alternative data connection cable
ATTENTION!
Material damage caused by electrical voltage! The alternative data connection cable may only be
manufactured by professional personnel.
The alternative data connection cable is a Cat-5 cable for long data connections. The following
applies to the alternative data connection cable:
n The total length of the RS485 bus must not exceed 1,000 m (Master/first inverter to last
inverter).
n Use the pin assignment according to the table below if the alternative data connection cable is
connected to the RJ45 socket of the first inverter or to the connector of an external data logger.
Pin assignments of the alternative data cable
Device Inverter Solar-Log
WEB‘log
1)
Signal
¤
Connection RJ45 Terminal strip RJ12
Pin
1 1 2 Data A
2 4 4 Data B
3 — — —
4 — — —
GB
747.431 | Z08 | 2014-01-31
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