Technical Support

Hi All

I really hope someone can help with a solution to my problem.

I am running 2x 8Kva inerters in parallel, system works fine, no trips or alarms but have a issue with the slave.

First my setup

2x 8KVA Sunsynk inverters on the same firmware in paralell.

3x R100 Revov batteries connected in parallel to a bus bar and then to each inverter.

Batteries connected via CAN port to master inverter.

Communication cable connection Parallel port B on master, parallel port A on slave. Dip switches "on" on both inverters.

CT coil on master

Master on Phase A canbus 01

Slave on Phase A canbus 02

Zero Export

Limit to load only

Issue

The slave uses more grid power / load than the Master. When running on grid the slave will use almos a kw/h more than the master depends on how big the load is.

When the running on battries only at night and no PV available the inverters split everthing 50/50.

Also the slave sees the batteries as 0.5V higher that the master.

Then my biggest issue is the slave will charge the batteries between 400-500w even when the timers are set not to do so. If there is not enough PV it will use grid to do so. The master does not charge the battries at this point.

It will be much appreciated if someone can shed some light or have a solution for me.

If not will it be a future issue is the slave uses more grid than the master? The system runs fine, it is only the numbers that does not add up and the annoyance of the battery charge when it's not supposed to which uses a bit of grid.

Thanks in advance

Pieter