SMA Sunny Island 4248U, Installation & Operating Instructions Manual

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Commissioning SI4248U Manual
42
During normal operation, the inverter will display the home screen. See the figure below for a
description of the items found on the home screen.
Figure 1-22 Home Screen Elements
Reset Sunny Island 4248U to factory settings
In order to reset the Sunny Island 4248U to its delivery status, switch the inverter off with the
DC disconnect. Press and hold [ ESC ] and [Arrow Up] button. Switch the DC disconnect on,
still pressing the buttons. When "NEWSYS" appears in the display you can let off the buttons
and proceed as if the inverter was new (it will show "To init System Press <Enter>").
Generator Set Up
There are three sets of parameters that need to be set based upon system configuration and
type of generator used to allow the Sunny Island to operate the generator automatically:
GenControl, GenOperation and GridConnected.
GenControl
The GenControl parameter tells the Sunny Island what type of control is required to operate
the generator that is connected to it. There are three possible settings: Manual, Direct and
GenMan
Manual: (Default) When Manual is selected, the Sunny Island assumes that it has no control
over the generator whatsoever. This setting is to be used when the generator has no autostart
capability and must be started and stopped manually.
NOTE: When the Sunny Island GenControl parameter is set to Manual, the Sunny
Island will automatically connect to the generator whenever it sees voltage on the
AC input terminals (provided the voltage and frequency of the power is within
tolerances.)
NOTE: Because the GenRequest relay is not utilized with manual start generators,
it can be used to activate a indicator light that would notify the user that the Sunny
Island is requesting that the generator be switched on.
Direct: The Direct setting is used when the generator is a two-wire start type that can be started
by the closing of a relay. The two-wire start circuit would be wired to the G_REQ relay
terminals. In Direct mode, the generator will be started automatically be the Sunny Island when
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