SMA POWER PLANT CONTROLLER User Manual

Page 30

7 Operation

SMA Solar Technology AG

PPC-BE-P7-en-13

Operating Manual

– adjust the accuracy with which the output values are sent to the devices of the PV system in the field Write

profile:

– enter the control group in which the Sunny Central is connected to the respective MV transformer. Depending on

the MV transformer, one or two Sunny Centrals can be connected in each control group. Generally, the

Sunny Central devices or the control groups, respectively, can be numbered consecutively.

– Adjust the nominal power of the Sunny Central in [kW] in the field Pac Nom.
– Make the desired settings in the remaining columns:

7.6.3 Adjusting the Configuration of the Cluster Controllers and

Inverter Managers

After commissioning the Power Plant Controller, you can still change the IP address of individual Cluster Controllers and

Inverter Managers, assign theses devices unique names or disable the setpoint specified by the Power Plant Controller

for individual devices.

Procedure:

1. Log into the user interface as an installer (see Section 11.3.1, page 54).
2. Go to PPC > Grid system services > Device table Modbus gateways.
3. Adjust the desired settings for each device:

– enter a unique name for the Cluster Controller or the Inverter Manager in the field Device name
– deactivate the setpoint specified by the Power Plant Controller in the Active column (adjust setting to FALSE) or

activate (adjust setting to TRUE)

– change the IP address, port and UID of the Cluster Controller
– enter a device type matching the respective device in the Model field:

– adjust the nominal power of the inverters assigned to the Cluster Controller in [kW] in the field Pac Nom

Profile

Explanation

The output values are transmitted with an accuracy of 1%.

The output values are transmitted with an accuracy of 0.01%.

Column

Setting

MB Time Server

Activation (TRUE) / deactivation (FALSE) of the specification of time through an external

Modbus time server

Q at Night

Activation (TRUE) / deactivation (FALSE) of the "Q at Night" function in the inverters if this

function is available

Qac Nom

Input of the nominal reactive power for the particular inverter

first Q limit

The first threshold of the reactive power for the particular inverter. If this lower reactive power

limit is reached during operation, the inverter no longer receives higher output values initially.

The effectiveness of this threshold is, however, canceled if the inverter would be able

mathematically to supply reactive powers above the second threshold.

second Q limit

The second threshold of the reactive power for the particular inverter.
If the first Q limit and the second Q limit were selected identically (default setting),

this function is deactivated.

Model

Designation

Cluster Controller

Inverter Manager