Sma CLUSTER CONTROLLER User Manual download pdf (Page 72)

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74).

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67).

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64).

• 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

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Sma CLUSTER CONTROLLER User Manual Page 72