SMA Solar Technology AG
3 Product Description
User Manual
SCCP-JP-BA-A4-en-12
17
Designation
Description
Stop
The Sunny Central is switched off.
Stop
,
Fast stop
or
Remote shutdown active
appears on the touch display.
If the key switch is set to
Start
, the Sunny Central switches to the operating state
"Grid monitoring".
Grid Monitoring
The Sunny Central is in the operating state "Grid monitoring".
Waiting for valid AC
grid
appears in the touch display.
The grid limits are monitored continuously from now on. If a grid error does not occur
during the grid monitoring time, the AC contactor closes and the Sunny Central
switches to the operating state "Grid monitoring time reached".
If the grid limits are exceeded during the monitoring time, the Sunny Central restarts
"Grid monitoring".
With the order option "Q at Night", the Sunny Central switches to the "Q at Night"
operating state if the time specified in the parameter
PvStrT
has elapsed and the
start voltage
PvVtgStrLevMin
has not been reached (see Section 3.8.8 "Q at
Grid Monitoring Time Reached The Sunny Central is in the operating state "Grid monitoring time reached".
Waiting
for PV voltage
or
Waiting for utilities company
appears on the touch display.
If the input voltage V
PV
is higher than the start voltage
PvVtgStrLevMin
, the
Sunny Central waits until the time specified in the parameter
PvStrT
has elapsed.
If the input voltage V
PV
does not fall below the start voltage
PvVtgStrLevMin
during
this time, the Sunny Central checks whether the AC grid is connected.
If a valid AC grid is connected, the Sunny Central switches to the operating state
"Startup".
The start voltage
PvVtgStrLevMin
must be adjusted to conform with the PV array
connected to the Sunny Central.
Startup
The Sunny Central is in the operating state "Startup".
Operation
appears on the
touch display.
In normal operation: active power ramp-up
The inverter works up to its feed-in power via a ramp. This means that the inverter
gradually increases the ratio of feed-in power per second by the value set in the
parameter
WGra
.
If you do not set this parameter, the inverter will reach its maximum feed-in power in
1 s (see Section 7.5 "Setting the Active Power Ramp-Up", page 47).
After grid fault: decoupling protection ramp
After a grid fault, the inverter restarts at a maximum of 10% nominal power per
minute using a decoupling protection ramp. You have the option of switching this
decoupling protection ramp on or off. If you deactivate the decoupling protection
ramp, the inverter rapidly reverts to maximum power. If you wish to deactivate the
decoupling protection ramp, consult the SMA Service Line.
