3 Product Description
SMA Solar Technology AG
18
SCCP-JP-BA-A4-en-12
User Manual
3.2.4 Touch Display
Different kinds of Sunny Central data can be viewed on the touch display. You cannot use the touch display to set any
Sunny Central parameters, but only to configure display settings such as language, time and brightness.
The display screen is activated by touching the touch display. Tapping the symbols on the touch display activates the
corresponding functions. If the touch display has not been touched for five minutes, it will switch off.
3.2.5 Key Switch
The key switch is used to switch the Sunny Central on and off.
Switch Position "Start"
If the key switch is turned to
Start
, a motor drive switches the DC switchgear on and the Sunny Central switches from the
operating state "Stop" to the operating state "Grid monitoring". Providing there is sufficient irradiation and a valid utility
grid connection, the Sunny Central switches to feed-in operation. If there is insufficient irradiation and the input voltage is
therefore too low, the Sunny Central remains in the operating state "Grid monitoring".
With the order option "Q at Night", the inverter can support the utility grid with reactive power as required.
Switch Position "Stop"
If the key switch is turned to
Stop
while the Sunny Central is in the operating state "Grid monitoring", a motor drive
switches the DC switchgear off. The Sunny Central switches to the operating state "Stop".
If the key switch is turned to
Stop
while the Sunny Central is in the operating state "MPP load operation",
the Sunny Central switches to the operating state "Shutdown". Once the shutdown is complete, the AC contactor and the
DC switchgear are switched off automatically and the Sunny Central switches to the operating state "Stop".
MPP load operation
In MPP operation, the Sunny Central feeds power into the utility grid and operates
permanently at the maximum power point (MPP).
Operation
and the amount of
power being fed in appear on the touch display.
If the measured power P
PV
during the time interval
PvPwrMinT
is less than the
minimum feed-in power
PvPwrMin
or the key switch is set to
Stop
,
the Sunny Central switches to the operating state "Shutdown".
With the order option "Q at Night", the Sunny Central switches to the operating state
"Q at Night" if the measured power P
PV
during the time interval
PvPwrMinT
is less
than the minimum feed-in power
PvPwrMin
(see Section 3.8.8 "Q at Night",
Shutdown
The Sunny Central is in the operating state "Shutdown".
Operation
appears on the
touch display.
If the key switch is set to
Stop
, the Sunny Central switches to the operating state
"Stop". The AC contactor and the DC switchgear open automatically.
If the Sunny Central shuts down because the feed-in conditions are no longer met,
the Sunny Central switches to the operating state "Grid monitoring".
Disturbance
If a disturbance occurs during operation, the Sunny Central switches off and displays
the word
Fault
and the actual disturbance in the touch display (see Section 10
Designation
Description
