EATON XSTORAGE COMPACT INSTALLATION MANUAL
P-16400097 - September 2020 www.eaton.com
17
The number of battery strings is determined by the energy capacity (kWh) requirements of the project.
Table 2. Number of battery strings based on energy capacity
Battery technology
Number of strings / Battery power options
1
Option A
2
Option B
3
Option C
Nominal capacity
(kWh)
GEN1 (2nd life)
21
42
63
GEN2
30
60
90
GEN4
50
100
150
3.5
System controller and communication box
The system controller and its related components are physically placed in the communication box. The
system controller enables the communication and monitoring of data.
The main components in the communication box are:
•
System controller unit (Eaton XC-303)
•
Relay output and I/O modules (Eaton XN322) that offer digital inputs for monitoring the breaker and
relay status, auxiliary relay outputs to activate battery pack wake-up signals, and circuit breaker
tripping
•
Ethernet switch (Eaton PXE 6-port switch 10/100 Mb) that connects the xStorage system with the
external communication and management system
•
24 Vdc and 12 Vdc auxiliary power supplies to feed the system controller and the related compo-
nents
•
Terminal blocks to ensure proper connections
The system controller is based on the Eaton XC-303 modular PLC hardware. It is expanded centrally by
XN322 slice modules. The system controller enables the communication and monitoring of data from the
different devices connected to the internal CAN bus.
The main functionality of the system controller unit is to:
•
acquire, consolidate and monitor available data from the battery packs and power conversion
system (PCS)
•
control PCS operation
•
control battery system operation
•
manage various grid connection functions
•
enable connectivity with the application controller or client controller
3.6
Application controller
The control panel of the Eaton xStorage Compact system is a 7-inch color touch screen. It is a dual-
purpose device, providing both a local user interface for the control of the single xStorage Compact unit,
and the means to manage application-specific functions of the larger energy storage system.
As default, the control panel is placed on the front door of the system cabinet. As an option, the xStorage
Compact system is also available without the control panel.
In systems with multiple parallel Eaton xStorage Compact units, only a single application controller is
needed to manage all units.