SMA CLUSTER CONTROLLER User Manual

7. In the field Active power enter the desired value for the fixed active power limitation.
8. Make the settings for the fallback (see Section13.5, page70).
13.4 Settings for Reactive Power Setpoint
13.4.1 Controlling Reactive Power via the Setpoint "Reactive
Power in %"
If you have selected Reactive power in % as reactive power setpoint, the reactive power is used
as a percentage value based on the maximum possible active power.
Input signals up to 21mA possible
For an analog signal source, the ClusterController classifies input signals as valid up to a
maximum of 21mA. This enables intentional overload to ensure that the maximum setpoint is
reached.
Requirements:
☐ The configuration for the reactive power setpoint must be agreed upon with the responsible
grid operator.
☐ The required parameter for the reactive power setpoint must be configured in the inverter (see
Section13.2, page63).
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. Make the general settings:
• Select the parameter group General settings > System control.
• Select [Edit].
• In the drop-down list Operating mode, select the entry Open-loop control.
• If you are using digital or analog inputs, enter the desired time interval in the field Time
interval for the output value.
4. Select the parameter group Reactive power and select [Edit].
5. Make the basic settings in the group Basic settings:
• In the field Signal source in the drop-down list, select the desired signal source. Note
that the desired Modbus server must be activated in the ClusterController when you are
using the Modbus (see Section12.1, page60).
• In the drop-down list Predefined Quantity, select the setpoint Reactive powerin%.
6. When using the digital inputs, make the settings for the digital inputs:
• Select the group Settings of digital inputs.
• In the field Failure tolerance time, enter a value above 1second if possible. This
prevents e.g. a brief, simultaneous activation of two relays of a ripple control receiver
during a ClusterController status change being classified as an invalid status.
7. When using the analog inputs, make the settings for the analog inputs:
13 Grid Management Services
SMA Solar Technology AG
User ManualClusterController-BA-en-1568

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