Steca coolcept3 StecaGrid 3203, Инструкция по установке и эксплуатации

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The alternative data connection cable is a Cat-5 cable for long data
connections. The following applies to the alternative data connec-
tion 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.
Tab. 2: Pin assignment of the alternative RS485 data cable
Device Inverter Solar-Log
WEB‘log 1)
Kiwigrid
Signal

Connection RJ45 Terminal strip RJ12 Terminal strip
Contact
1 1 2 A Data A
2 4 4 B Data B
3 — — — —
4 — — — —
5 — — — —
6 — — — —
7 — — — —
8 3 6 GND Ground
NOTICE!
1 Danger of destroying the inverter's RS485 input.
Pin 1 of the RJ12 socket of the Web‘log data
logger carries 24 V DC. Never connect the alter-
native data connection cable to pin 1!
3.6.5 RS485 termination
To prevent data transmission errors, the start and end of the RS485
bus should be terminated:
n
The external data logger (at the start of the data connection)
must be terminated according to the manufacturer's specifica-
tions.
n
The last inverter (at the end of the data connection) is termi-
nated by plugging the optionally available termination plug into
the free RJ45 socket (for RS485 bus) (see table in Ä
Chapter 2.2
„Identification“ on page 6 under 'Optional accessories').
3.6.6 RS485 addressing
Every inverter must be assigned its own unique address for commu-
nication between the bus master and the slaves.
Every inverter is set with an address of 1 at the factory. This means
that the addresses must be adjusted in systems having more than 1
inverter. The following applies:
EN
750.661 | Z03 | 2016-09-12 27