Sma SUNNY CENTRAL User Manual download pdf (Page 16)

Description of the Sunny Central SMA Solar Technology AG

16 SC-BEN092751 User Manual

3.3.2 Operating Modes of Team Systems

In addition to the normal operating modes, Sunny Centrals which are configured as a Team system

also have Team operating modes.

Stop

If one of the two Sunny Centrals is deactivated, the second Sunny Central is operated individually

without Team. If only the Team leader is operating, it is in the "Startup" mode. If only the Team member

is operating, it resides in the "String Operation" mode.

Linking (Mornings)

The Team contactor is disconnected. If the input voltage (Vpv) of both Sunny Centrals is greater than

the PV start voltage (UpvStart) - 50 V, the Team contactor closes itself. The Team leader begins to

operate as soon as the start conditions are fulfilled. The Team leader goes into the "Team leader"

mode and feeds the power into the grid. The Team member changes to the "PV linked" mode. The

Team leader and the Team member operate as a Team.

Disconnecting

The Team member is in "Team mode". The Team leader is in "Team leader" mode. Both Sunny Centrals

are feeding into the grid.

If the Team leader's output exceeds the value of "P-NextTeam" (default setting: 80 %), the DC

contactor is switched off. Both Sunny Centrals then operate individually, and feed into the grid.

Linking (Evenings)

If the Team leader's AC output falls below the value of "P-PrevTeam" (default setting: 20 %), the Team

contactor is switched on. The Team leader feeds the entire system power into the grid, and is in the

"Team leader" mode. The Team member is in "PV linked" mode.

Night Operation

If the Team leader's open circuit voltage is below UpvMin - 100 V for 30 minutes, the Team contactor

is disconnected. The Team leader changes to "Startup" mode. The Team member changes to "Team

mode".

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Sma SUNNY CENTRAL User Manual Page 16