Installation manual

Connecting the inverters
Vaillant – auroPOWER VPI /1 and VPI (RS485)
Solar-Log
1000/500/200
Installation 43 of 268
Connecting inverters to the Solar-Log™
The wiring is done using the
 ready-made data cable (optional extra; not supplied)
or
 self-made, shielded 2 wire data cable and terminal block connector
( Page 15).
Procedure
1 Open the inverter as described in the inverter instructions.
2 Pull the free wires through the wire opening in the inverter.
3 If you have made the cable connection yourself connect the wires as
shown in the following diagram:
Solar-Log™ terminal block connector
Inverter terminal strip
Terminal
Terminal
 1
 B
 4
 A
4 If only one inverter is to be connected it must be terminated:
In the inverter connect the free terminal A to terminal B using the supplied
330 Ω terminating resistor.
Units without transformers: From unit generation VPI xx00 /2 the 330 Ω re-
sistor is switched on using the DIP switch. When the unit is delivered the
terminal resistor is switched on.
5 Close the inverter if no other inverters are to be connected.
6 Insert the terminal block connector into the Solar-Log™ RS485 socket.
Connecting the inverters to each other (Solar-Log
500
, Solar-Log
1000
)
 Connect using a 2 wire, shielded data cable.
 Where to connect: Terminal strip inside the inverter
The RS485 connections on the terminal strip are each double connections
so that the wiring can be continued to the next inverter.
Procedure
1 Open the inverter as described in the inverter instructions.
2 Connect terminal A on inverter 1 to terminal A on inverter 2.
3 Connect the other inverters to each other in the same way.
4 Terminate in the last inverter: In the inverter connect the free terminal A to
terminal B using the supplied 330 Ω terminating resistor.
Units without transformers: From unit generation VPI xx00 /2 the 330 Ω re-
sistor is switched on using the DIP switch. When the unit is delivered the
terminal resistor is switched on.
5 Close inverters.