Product Overview; Device Function; System Manager - SMA DATA MANAGER M Operating Manual

SMA Solar Technology AG
4

Product overview

4.1

Device function

Several Data Managers can be integrated into one system. It is possible to choose between the
following device functions:

• System Manager

• Superordinate System Manager
• Subordinate System Manager
In systems with a superordinate and subordinate System Managers, all subordinate
System Managers must first be commissioned to be able to integrate them into the system of the
superordinate System Manager. To subsequently use a System Manager or a superordinate
System Manager as a subordinate System Manager, the product must be reset to the default
settings.
System Manager
Select the option System Manager in the installation assistant if you use the Data Manager as a
stand-alone device without other subordinate Data Managers for open-loop or closed-loop control
of your system.
Superordinate System Manager
Select the option Superordinate system manager in the installation assistant if you use the
Data Manager as a superordinate device with other subordinate Data Managers for open-loop or
closed-loop control of your system. With this option, the superordinate Data Manager forwards the
open-loop or closed-loop control commands to the subordinate Data Manager via Modbus. For
this, subordinate Data Managers must be integrated as Modbus devices into the system of the
superordinate Data Manager. Meters at the grid-connection point must be connected to the
superordinate Data Manager. The Modbus server must be activated in the superordinate
Data Manager.
Subordinate System Manager
Select the option Subordinate system manager in the installation assistant if you want to use the
Data Manager as subordinate device. With this option, the subordinate Data Manager receives the
open-loop and closed-loop control commands of a superordinate device. These commands are
forwarded as open-loop control commands to the connected devices. In systems with a
superordinate Data Manager, all subordinate System Managers must first be commissioned to be
able to integrate them into the system of the superordinate Data Manager. The operating mode
Control and the signal source Modbus must be selected for the subordinate Data Manager. The
option Optimized closed-loop control/open-loop control must be disabled. The Modbus
server must be activated in the subordinate Data Manager. Under the Direct seller settings, the
Source for external setpoint must be activated and Modbus must be selected.
Also see:
• Registration in Sunny Portal ⇒ page 54
Operating manual
4 Product overview
EDMM-20-BE-en-10 17