SMA CLUSTER CONTROLLER User Manual

longer be up to date. This prevents potential yield loss. The fallback must be activated and
configured via the user interface of the ClusterController. In the event of an invalid or missing
setpoint and configured fallback, the ClusterController only retains the last valid setpoint for a
limited, configurable time. Once this fallback time has elapsed, the ClusterController implements
the setpoints that were assigned to the fallback. As soon as a valid setpoint is available again, the
fallback is reset and the ClusterController implements the current setpoint.
Requirement:
☐ The activation and the configuration of the fallback must be agreed upon with the grid
operator.
Procedure:
1. Log into the ClusterController as Installer.
2. In the system tree, select the ClusterController and select the menu Grid management
services in the device menu.
3. Select the parameter group for which the fallback settings are to be made:
• To configure the fallback for the active power limitation, select the parameter group
Active power > Fallback settings.
• To configure the fallback for the reactive power setpoint, select the parameter group
Reactive power > Fallback settings.
4. Select [Edit].
5. Make the desired settings for the fallback:
• In the drop-down list Fallback activated, select the entry Yes.
• In the field Fallback activates after, enter the desired time after which the fallback is to
be activated.
• Depending on the parameter group and the selected setpoint, enter the desired value in
the field Active power or Reactive power or cosPhi.
• If cos Phi is selected as setpoint, select the desired excitation type in the drop-down list
Excitation type.
6. Select [Save].
Fallback in Case of Failure of Speedwire Communication between
ClusterController and Inverters
In inverters with SpeedwireWebconnectPiggy-Back, fallback in case of failure of
Speedwire communication is not configurable
It is not possible to configure fallback in case of failure of Speedwire communication in
inverters with SpeedwireWebconnectPiggy-Back. This kind of fallback is designed for
inverters with Speedwire/Webconnect data module and inverters of the type
SunnyBoySmartEnergy.
With this kind of fallback, you can configure which setpoints the inverters in the system are to
implement if the Speedwire communication between the ClusterController and the inverters fails
and the inverters do not receive any setpoints within a configurable time interval.
13 Grid Management Services
SMA Solar Technology AG
User Manual 71ClusterController-BA-en-15

SMA CLUSTER CONTROLLER Specifications

General

Data Logging	Yes
Display	LCD
Power Supply	24 V DC
Remote Monitoring	Yes
Protection Class	IP20
Communication Interfaces	Ethernet
Product Type	Controller
Manufacturer	SMA