Connecting The I/O Box And Weather Station (Optional); Connecting The Inverter Manager To The Voltage Supply - SMA INVERTER MANAGER Instructions D'installation

SMA Solar Technology AG
3.3.5 Connecting the I/O Box and
Weather Station (Optional)
Do not connect during operation
Do not connect the I/O Box or the weather station to
the Inverter Manager during operation. Errors might
occur that cannot be detected immediately.
• Disconnect the Inverter Manager from voltage
sources.
Pin assignment of the serial interface (RS485) at the Inverter
Manager:
1
2 3
6 7 8
Figure 5: Pin assignment of the serial interface
The I/O Box must be connected to port 2 of the Inverter
Manager. Termination for the RS485 interface is not
necessary.
Pin
1
2
3
4
5
6
7
8
Interfaces and Data of the Weather Station
Only one weather station can be connected to each Inverter
Manager. The weather station must be connected to port 1
of the Inverter Manager. A maximum of two temperature
sensors are supported.
Installation Manual
5
4
9
Assignment
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---
DataB(+)
DataA(-)
GND
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The following data of the weather station are provided by
the Inverter Manager:
Meteorological SunSpec
data Modbus
TCP
Ambient yes
temperature and
PV temperature
Wind direction yes
and wind speed
Horizontal yes
irradiation
Inclined no
irradiation
3.3.6 Connecting the
Inverter Manager to the Voltage
Supply
Danger to life due to electric shock from touching
an ungrounded product
Touching an ungrounded product can cause a lethal
electric shock.
• Ensure that the product is integrated into the existing
overvoltage protection.
• Ground the enclosure of the product.
Procedure:
To connect the Inverter Manager to the voltage supply,
perform the following actions in the specified order.
• Connect the grounding conductor to the
Inverter Manager.
• Connect the power supply unit.
3 Inverter Manager
LCS-Tool / Sunny
FTP Push Portal
yes yes
yes yes
yes If inclined
irradiation is
not
available
yes yes
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