SMA SUNNY WEBBOX Technical Description

SMA Solar Technology AG Troubleshooting
Technical Description SWebBox-TEN101232 77
Sunny WebBox cannot
connect via the GSM
modem.
The GSM modem settings are
not correct.
Check the GSM modem settings (see
section 10.4.1”Testing the Connection”
(page61)). Test the connection (see
section 10.4.1”Testing the Connection”
(page61)). Correct the settings if
necessary.
The SIM card is not enabled for
operation.
Check whether the SIM card is enabled
for operation. If necessary, have the card
enabled for operation.
The GSM modem signal
strength is not sufficient.
Test the GSM modem signal strength
(see section 10.4.2”Testing the Signal
Strength of the GSM Modem”
(page61)). If sufficient reception is not
possible in the building, use the optimal
GSM antenna extension set for outside
installation (see Section
16”Accessories” (page91)).
The Sunny WebBox
cannot detect devices
connected to the
RS485 bus.
The data transmission protocol
and baud rate are incorrect.
Check whether the data transmission
protocol and the baud rate for
connected devices are set correctly (see
section 10.2.1”Setting SMA-COM”
(page58)).
Check the cabling of the devices on the
RS485 communication bus. See the
RS485 cabling plan poster for
information on cabling to the RS485
communication bus.
Check that the RS485 cable is correctly
connected to the Sunny WebBox. Check
all connections (see section
6.8.2”Connecting the Sunny WebBox
to the RS485 Communication Bus”
(page35)).
Check the termination and signal biasing
of the RS485 communication bus (see
section 6.8.2”Connecting the Sunny
WebBox to the RS485 Communication
Bus” (page35)).
Problem Cause Rectification

SMA SUNNY WEBBOX Specifications

General

Brand	SMA
Model	SUNNY WEBBOX
Category	Measuring Instruments
Language	English