SMA CLUSTER CONTROLLER

Parameter Explanation
Start setpoint active power limita-
tion
Lower limit for the setpoint for the active power limitation re-
lated to the inverter parameter Set active power limit or
Pmax
End setpoint active power limita-
tion
Upper limit for the setpoint for the active power limitation re-
lated to the inverter parameter Set active power limit or
Pmax
For reactive power setpoint in %:
Start setpoint reactive power
Lower limit for the setpoint for the reactive power setpoint re-
lated to the inverter parameter Set active power limit or
Pmax
For reactive power setpoint in %:
End setpoint reactive power
Upper limit for the setpoint for the reactive power setpoint re-
lated to the inverter parameter Set active power limit or
Pmax
For setpoint cos Phi:
Cos Phi start setpoint
Lower limit for the setpoint of the displacement power factor
cosφ
For setpoint cos Phi:
Cos Phi end setpoint
Upper limit for the setpoint of the displacement power factor
cosφ
For setpoint cos Phi:
Excitation type
Direction of phase shift
Example of the importance of lower and upper limits for setpoints
4mA is set as the initial value for the active power limitation setpoint and 16mA is set as the end
value for the active power limitation setpoint. If the grid operator sends a signal of 3.5mA to the
ClusterController, the ClusterController then classifies this signal as 4mA because the value of
4mA is set as the lower limit for the active power limitation setpoint. If the grid operator sends a
signal of 17mA to the ClusterController, the ClusterController then classifies this signal as 16mA
because the value of 16mA is set as the upper limit for the active power limitation setpoint.
4 User Interface of the Cluster Controller
SMA Solar Technology AG
User Manual 29ClusterController-BA-en-15