Steca coolcept - Page 30

Note
The settings must be made on the external data loggers as specified by the manufacturer,
before connecting.
The cabling scheme of the RS485 bus is presented below.
1
2
3
4
5
5
5
RS485
RS485 RS485
Fig. 9: Cabling scheme
①
External data logger
②
First inverter
③
Inverter
④
Last inverter, terminated
⑤
RJ45 standard cable (patch cable)
3.6.4 Alternative RS485 data connection cable
NOTICE!
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.
EN
747,431 | Z09 | 2015-09-30 30