SMA CLUSTER CONTROLLER User Manual

13.3 Settings for Active Power Limitation
13.3.1 Controlling Active Power Limitation
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 active power limitation must be agreed upon with the responsible
grid operator.
☐ The necessary parameter for the active power limitation must be set 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.
• If necessary, adjust the value for the total system power. By default, the nominal inverter
power available in the system is used as the value for total system power.
– In the drop-down list Total system power select the entry User-defined.
– In the field Save user-defined total system power, enter the desired value.
4. Select the parameter group Active power and select [Edit].
5. Activate the checkboxes for the desired signal sources in the group Basic settings > Signal
source. Note that the desired Modbus server must be activated in the ClusterController when
you are using Modbus (see Section12.1, page60).
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:
• Select the group Settings of analog inputs.
• In the field Failure tolerance time, enter the desired time interval.
• In the field Initial value input signal, enter the desired value.
13 Grid Management Services
SMA Solar Technology AG
User ManualClusterController-BA-en-1564

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