SMA SC 500CP-US-10 600V - Manual (Page 28)

3 Product Description SMA America, LLC
28 SCCP-US-BE-US_en-52 Operating Manual
3.2.5 Key Switch
The key switch is used to switch the inverter on and off.
Switch position "Start"
If the key switch is turned to Start, a motor drive automatically switches on the DC switching device and the inverter
switches from the operating state "Stop" to the operating state "Grid monitoring". If there is sufficient irradiation and a
valid utility grid connection, the inverter switches to feed-in operation. If there is insufficient irradiation and the input
voltage is therefore too low, the inverter remains in the operating state "Grid monitoring".
With the "Q at Night" order option, the inverter supports the utility grid with reactive power if the input voltage is
insufficient.
Switch position "Stop"
If the key switch is turned to Stop while the inverter is in the operating state "Grid monitoring", a motor drive automatically
switches off the DC switching device. The inverter switches to the operating state "Stop".
If the key switch is turned to Stop when the inverter is in the operating state "MPP load operation",
the inverter switches to the operating state "Shutdown". Once the shutdown is complete, the AC contactor and the DC
switching device are switched off automatically and the inverter switches to the operating state "Stop".