Fronius Symo Hybrid - Mounting and Connecting the Fronius Checkbox 500 V; Ferrite Ring Installation for Data Line

10
Mounting and
connecting up the
Fronius Check-
box 500V
NOTE!
Risk of damage to the device.
Do not mix up the DC connections of the battery and the inverter.
Observe the enclosed complete circuit diagram when connecting up the Fronius checkbox.
Mount the supplied mounting bracket to the wall using suitable screws and wall plugs
Attach the Fronius Checkbox, push it down, and secure using the screw supplied
1 2
Installing the fer-
rite ring for the
data line
The data line between the inverter and the battery must be fitted with a ferrite ring as close
as possible to each of the two terminal connections in order to avoid electromagnetic inter-
ference.
One ferrite ring is supplied with the Fronius Symo Hybrid and one is supplied with the Fro-
nius Checkbox (Würth ferrite ring - item number: 74271132S).
Fit a ferrite core to the data line ahead of the terminal connection in the inverter
Remove the insulation from the data line ahead of the battery terminal connection and
loop the line through the ferrite core twice
1
2
1
3
2
4
6 mm
min 4 mm²
3
3 4 2
1
-
+
+
-
min 2,5 mm²
double insulated
1000 V
only original MC4
4
1
2