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W
ireless signal environmental checks
The wireless communication is used to perform commissioning and
monitoring on the inverter. The WLAN board of the inverter uses radio
waves to transmit and receive data, it is therefore important to assess
this factor in order to have optimal installation.
• Walls in reinforced cement and surfaces covered in metal (doors,
shutters, etc.) can markedly reduce the reach of the device which
even in optimal conditions, should be of approximately 50 metres in
free space.
• It is therefore recommended that before installing the inverter, the
strength of the wireless signal is checked, using a mobile device
(smartphone, tablet or notebook) and connecting to the wireless router
from a position which is close to the installation site of the inverter.
The radio signal level between the inverter and the wireless 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 wireless router, as shown in the figure.
2. Find a new position for the router considering the different types of
materials which the radio signal will have to pass through:
Material
Open field
Wood / Glass
Stone / Plywood
Reinforced concrete
Metal
The quality of the RF signal can be assessed during the installation stage
where the signal is displayed in dBm.
3. Install a wireless 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.
Relative signal reduction
0% (strength of approximately 50 metres)
From 0 to 10%
From 10 to 40%
From 60 to 90%
Up to 100 %
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5 - Installation
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