Steca Elektronik coolcept Notice D'installation Et D'utilisation page 97

The alternative data connection cable is a Cat-5 cable for long data connections. The following
applies to the alternative data connection cable:
The total length of the RS485 bus must not exceed 1,000 m (master/first inverter to last
n
inverter).
Use a 1:1 pin assignment if the alternative data connection cable is connected to the RJ45
n
sockets of the inverters and the StecaGrid Vision.
Use the pin assignment according to the table below if the alternative data connection cable is
n
connected to the RJ45 socket of the first inverter and to the COMBICON connector of the Steca-
Grid Vision or to the connector of an external data logger.
Pin assignments of the alternative data cable
Device Inverter
Connection RJ45
Pin
1) Plugs for the alternative data cable are included in the scope of delivery for the StecaGrid Vision.
More information is provided in the StecaGrid Vision manual.
2)
ATTENTION!
Danger of destroying the RS485 input of the inverter. Pin 1 of the RJ12 socket of the Web'log
data logger carries 24 V DC. Never connect the alternative data connection cable to pin 1!
3.6.5 Termination
To prevent data transmission errors, the start and end of the RS485 bus should be terminated:
747.431
StecaGrid Vision
RJ45 COMBICON
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
External data loggers
1) Solar-Log
1) Terminal strip
1 1
2 4
— —
— —
— —
— —
— —
3 3
GB
WEB'
log 2)
Signal
RJ12
¤
2 Data A
4 Data B
— —
— —
— —
— —
— —
6 Ground
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