KACO blueplanet 3.0 NX3 M2 KACO blueplanet 5.0 NX3 M2 KACO blueplanet 8.0 NX3 M2 KACO blueplanet 10.0 NX3 M2
KACO blueplanet 15.0 NX3 M2 KACO blueplanet 20.0 NX3 M2
Page 22
7.7.2
RS485 cable connection
NOTE
Damage to the inverter due to electrostatic discharge
Components inside the inverter can be damaged beyond repair by electrostatic discharge.
›
Earth yourself before touching the components.
NOTE
For connection to the RJ45 socket, a network cable is required as described in the Chapter 7.3.1 on page
15. For outdoor use, the network cable must also have good UV resistance.
The RS485 port can support communication with a maximum installation length (across all inverters) of
1000 m. The signal and control connection must be measured in accordance with EMC requirements EN
62920 if the length of the cable attached at the signal and control connection is more than 30 m according
to the standard.
NOTE
When using the RS485 bus system, you must assign a unique IP address to each bus device (inverter,
sensor). > 5 devices or > 100 m - Terminate the
first and last
device of the communication link
(device/smart meter) through configured RJ45 connector with integrated 120 Ohm terminating resistor
(See Fig. 29).
Follow the connection diagrams in the associated application note “
Dynamic feedin limit and blueplanet
web public with Smart-Meter / data logger
” in the download area on our website
The device has been installed on the mount. RS485 cable and RJ45 connector (not included in delivery) are ready at
the device.
1. Strip the insulation from the wire and crimp it into the corresponding terminal
(see
Fig. 30 pursuant to DIN 46228-4)
2. Unscrew the cover cap of the communication port (see Fig. 31 sequence and observe arrow directions) and insert
the network cable into the attached RS485 communication client.
3. Plug the network cable into the corresponding communication port of the device (see Fig. 32, observe sequence
and arrow directions), tighten the thread sleeve, then tighten the forcing nut at the end.
»
The RS485 cable is connected to the device.
Fig. 30.
Cable pin assignment
Fig. 31.
Insert the network cab
Fig. 32.
Connect the network cable
Fig. 33.
Configuration of RJ45 connector with 120 Ω
resistance
RS485 communication contains more than 5 devices or is over 100m long – resistor required.
1. Plug the RJ45 connector with 120
Ω
terminating resistor into the free communication port on the first and last
device in the communication chain.
