Installation manual
104
Helios Systems
Helios Systems
34 Helios Systems
34�1 Helios Systems
Easy Installation Termination Addressing Sensors RS485 Meters RS485 Interface
No Yes Yes
Yes Yes RS485
String Inverter HSI 20
Overview
•
Integrated interface
•
Where to connect: RJ45 socket on the outside of the inverter
•
3-pin wiring
•
Communication address must be allocated.
•
Installation steps
• Allocate communication address
• Switch off the inverters and Solar-Log™
• Connect inverters to the Solar-Log™
• Connect the inverters to each other
Connect inverters to the Solar-Log™
The wiring is done using a
•
self-made cable connection with RS485 data cable and terminal block connector.
Procedure
1. Open the inverter as shown in the inverter's instructions.
2. Insert the RJ45 plug into any RJ45 socket on the first inverter.
3. If you are making the cable yourself, connect the wires as shown in the following diagram
Solar-Log™ terminal strip connector RJ45 inverter
Terminal PIN
► 1
4
► 3
3
► 4
5
4. If only one inverter is to be connected this must be terminated.
5. Close the inverter if no other inverters are to be connected.
6. Insert the terminal block connector into the Solar-Log™ RS485 socket.
Caution
Risk of damage to the unit!
The Solar-Log™ also has an RJ45 socket, which must never be connected to the RJ45
socket on the inverter.
► OnlyconnectinvertersviatheRS485/422Solar-Log™interface(s).