Recommendations for the Wi-Fi signal power
The radio signal level between the inverter and the Wi-Fi router can be
improved in a number of ways:
1. Change the direction of the antenna.
The antenna has a dead zone at its tip, which should not be positioned
facing the Wi-Fi router, as shown in the gure.
2. Find a new position for the router considering the different types of
materials which the radio signal will have to pass through:
Material Relative signal reduction
Open eld 0% (strength of approximately 50 metres)
Wood / Glass From 0 to 10%
Stone / Plywood From 10 to 40%
Reinforced concrete From 60 to 90%
Metal Up to 100 %
The quality of the RF signal can be assessed during the installation stage
where the signal is displayed in dBm.
3. Install a Wi-Fi signal repeater and place it in an area between the
inverter and the router, trying to make sure that the most critical obstacles
are avoided.
4. Use an antenna extension cable to connect to the inverter (supplied by
ABB). If the inverter is installed in a position which is covered by obstacles,
the cable will allow the antenna to be moved to a better position.
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