Connecting the inverters
Vaillant – auroPOWER VPI /1 and VPI (RS485)
42 of 268 Solar-Log
1000/500/200
Installation
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
– 750 V models: 4 RS485 terminals on 10 pin terminal strip
– 850 V models: 4 pin RS485 terminal strip
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 terminals RS485+ and RS485- on all inverters to the two data ca-
ble wires in accordance with the inverter instructions.
3 Terminate in the last inverter: Set the supplied jumper JP
4 Close inverters.
Allocating communication address
Recommendation: Continuous numbering starting with 1.
Setting: Using the inverter operating display
Procedure: As set out in the inverter's instructions
4.13 Vaillant – auroPOWER VPI /1 and VPI (RS485)
Overview
VPI up to 2005: RS485 interface can be retrofitted by the manufacturer.
VPI/1: Interface integrated - activate using operating display.
Where to connect: Terminal strip inside the inverter
2 pin wiring
Communication address must be allocated.
Work steps
• Switch off the inverters and SolarLog™; Page 17
• Models up to 2005: Retrofit RS485 interface
• Connect inverters to the Solar-Log™
• Connect the inverters to each other
• Allocate communication address
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