2�- Kostal Piko Inverter; 2�1�- Communication Cable - Circutor CDP Series Application Notes

CDP
2�- KOSTAL PIKO INVERTER
The CDP and the inverter communicate via an RS-485 bus. This RS-485 bus can connect up
to 32 inverters, although the number of inverters in the vast majority of domestic installations
ranges from 1 to 3.
2.1.- COMMUNICATION CABLE
To communicate with a KOSTAL PIKO inverter using a CDP, the inverter must be equipped
with a communications card with an RS-485 interface (
The connector is a terminal for a 0.25mm
Functions of the communication cable terminals between the CDP and the inverter:
R2 channel communications
It is not necessary to wire the GND terminal, although it is advisable to do so for long distances.
Application notes
Figure 1:Communication card.
Table 3:Communication card.
No
1 Connection terminal S0/AL-Out (2-pole)
2 2 Ethernet connections (RJ45)
3
Analog interface connection terminal
4 Connection terminal for RS-485 interface
5 Extension module connection terminal
cable
2
Table 4:
Functions of the communication cable terminals.
CDP
connector
Terminal Description
1 A+
3 B-
5 GND
).
Figure 1
Description
Communication card
RS-485 Terminal (No. 4)
Terminal Description
A+ RS-485 A +
B- RS-485 B -
GND GND
7