Touch Display; Key Switch; Sunny Central Communication Controller - SMA SUNNY CENTRAL 500CP XT Installation Manual

SMA Solar Technology AG
3.2.3

Touch Display

Different kinds of Sunny Central data can be viewed on the touch display. On the touch display, you cannot set any
Sunny Central parameters, but only configure display settings such as language, time and brightness.
The display area 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.
3.2.4

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 automatically switches the DC switchgear on and the Sunny Central
switches from the operating state "Stop" to the operating state "Grid monitoring". If there is sufficient irradiation and a
valid utility grid connection, the Sunny Central switches to feed-in operation. If the irradiation level, and therefore the input
voltage, is too low, the Sunny Central remains in the operating state "Grid monitoring".
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
automatically switches the DC main switch 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".

3.3 Sunny Central Communication Controller

The SC-COM is the communication interface between the Sunny Central and the PV system operator.
Figure 3: SC‑COM
The SC-COM collects all data from the connected devices. The SC-COM enables monitoring, parameterization and
remote diagnosis of the Sunny Central via computer, as well as power control by the grid operator.
The various tasks performed by the SC-COM can be organized in two separate networks:
• Monitoring network: this network is used for monitoring, parameterization and remote diagnosis.
• Control network: the grid operator uses this network to transmit grid management specifications to the inverters.
The control network is used exclusively for grid management services that need to be transmitted and implemented
within a specified time period.
Installation Manual
3 Product Description
SCCPXT-IA-D7-en-42 15