SMA
Technologie AG
Safety Instructions
Installation manual
SC-100-13:SE2407
Page 9
Emergency Shut-off
The inverter is not equipped with an external emergency shut-off switch.
An external emergency shut-off switch or the external emergency shut-off function for
more than one device can be ordered as an option (emergency shut-off circuit).
3.9 Operation
Apart from the Sunny Central Control, there are no control elements on the device. The
cabinet doors must only be opened for commissioning, maintenance and
troubleshooting, as well as for data query and parameter setting. Before opening, the
device must be switched off using the key switch. Please also note the following safety
instructions for working on the device.
3.10 Commissioning, Maintenance and Repair
All work on the Sunny Central may only be performed when the device is safely
disconnected from the PV voltage, the grid voltage, and the internal power supply,
when these power sources are secured against being switched on again, and when it
has been checked that the device is voltage-free. Only qualified technical personnel,
who are familiar with the operation of the system, may undertake any such work.
3.11 Power Supplies
Switching on of the external power supplies
•
Grid voltage for the grid feed-in
•
Grid voltage for control voltage (internal power supply). There is the option of
feeding it externally.
•
DC voltage from the photovoltaic generator must occur in the sequence described
and may only be performed when the following conditions are satisfied:
•
All connections have been made according to the installation guide and the wiring
diagram.
•
The protective ground connection for grid feed-in and for internal power supply
has been made.
•
The device is switched off. This means that the Start/Stop switch is in the “Stop”
position and the main switches are off.
The emergency shut-off circuit may only be supplied with power from a
single Sunny Central.
Before opening the door, the Sunny Central must be switched off using the
key switch!
The Sunny Central must not be operated with the door open!
