Nuvation Energy BMS S801 User manual

© Nuvation Energy 2017
Grid Battery Controller
Installation Guide
2017-12-15, Rev. 1.1

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Table of Contents
Important Safety Information ......................................................................................3
Introduction ..............................................................................................................4
About this Guide ....................................................................................................4
System Overview .......................................................................................................5
Grid Battery Controller................................................................................................6
Mechanical Dimensions ...........................................................................................6
Electrical Connections .............................................................................................6
DC Power Connector...........................................................................................6
Appendix A: Detailed Mechanical Drawings ....................................................................8
List of Tables
Table 1: DC Power Connector Pin Assignment ................................................................7
List of Figures
Figure 1: Grid Battery Controller Example System Diagram .............................................5
Figure 2: Nuvation BMS™Example System Diagram .......................................................5
Figure 3: MINI-COMBICON DSUB Connector for Connection to DC Power ..........................7
Figure 4: Nuvation BMS™ Grid Battery Controller Mechanical Drawing ..............................8
Figure 5: Nuvation BMS™ Grid Battery Controller DIN Clip Location..................................9

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Important Safety Information
The content in this document must be followed in order to ensure safe operation of the
Nuvation BMS™
Do NOT energize the system until all connections to the Cell Interface and Power Interface
modules have been made.
Properly insulate or remove any unused wires. Unused wires can couple excessive system
noise into the BMS which can disrupt communication and lead to undesirable behaviors.
Insulated handling is required of any connector carrying potentials over 600Vdc relative to
chassis.
Please be aware of high voltages present in your system and follow all necessary safety
precautions.
NOTE: The provided module enclosures are not fire enclosures.
WARNING: Depending on battery chemistry, there might be a nominal voltage per cell
which adds up in series and is always present. There are many different battery chemistries
with different current capacities, and so high voltage with high current capacity may be
present while connecting the Nuvation BMS. You must use proper electrical safety
precautions when handling any part of the Nuvation BMS. Neither Nuvation Energy or any of
its employees shall be liable for any direct, indirect, incidental, special, exemplary, personal
or consequential harm or damages (including, but not limited to, procurement or substitute
goods or services; loss of use, data, or profits; or business interruption) however caused
and on any theory of liability, whether in contract, strict liability, or tort (including
negligence or otherwise) arising in any way out of the use of this product.
IMPORTANT NOTE: The Nuvation BMS relies on your system charger to charge the battery
cells; do not leave your charger off while the BMS is powered from the stack for prolonged
periods of time. The BMS should be shut down when the system is in storage to minimize
the drain on the cells.

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Introduction
Thank you for choosing the Nuvation BMS™ Grid Battery Controller.
The Nuvation BMS™ is an enterprise-grade battery management system with features that
extend battery life, ensuring pack-level safety, data-analytics, and remote management.
The Grid Battery Controller aggregates information and provides a unified interface to a
large multi-stack battery system.
You can take advantage of the highly configurable browser-based user interface and
custom-tune the Nuvation BMS™ to your specific target application.
About this Guide
This installation guide provides instructions to connect your Nuvation BMS™ Grid Battery
Controller to your Nuvation BMS™ system.
Once you have successfully completed the installation process, please follow instructions in
the Nuvation BMS Grid Battery Controller Firmware Reference Manual for accessing and
configuring the user interface.
We thrive on your feedback and what we build is driven by your input.
Please submit support tickets to [e-mail].

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System Overview
Nuvation BMS™Grid Battery Controller is used to aggregate information in systems where
multiple stacks are connected in parallel. An example configuration is shown below.
Figure 1: Grid Battery Controller Example System Diagram
Depending on the system, the individual stacks will be managed by either a Nuvation BMS™
High-Voltage Stack Controller or a Nuvation BMS™ Low-Voltage Battery Controller.
The Grid Battery Controller aggregates information from the Stack Controller or Battery
Controller in the system and provides a unified interface to the large battery system.
Figure 2: Nuvation BMS™Example System Diagram

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Grid Battery Controller
The Grid Battery Controller (GBC) provides two crucial battery-level software interfaces for
large, multi-stack battery applications:
1. Modbus TCP:
Unified view of the entire battery conforming to open energy standards.
Conforms to MESA Models: S801, S802 and S803
Used directly by inverters and other grid infrastructure implementing the
MESA standard
2. Web-based configuration and diagnostics:
Hosts web-based tools that can be accessed from common web browsers
Used to provision firmware upgrades, configure settings and view diagnostic
information for the entire battery system
A few key system-level features that are also provided are:
System-wide statistics for voltages, temperature and currents
Current tapering algorithms for multi-stack battery systems
SOC/SOH algorithms for multi-stack battery systems
NTP client for BMS time synchronization
The GBC uses a Linux-based operating system with special provisions in place to guarantee
the performance and responsiveness required for real-time inverter control.
Mechanical Dimensions
The overall dimensions of the GBC are 210mm X 140mm X 58mm. It comes standard with
DIN clips that enable the GBC to be securely mounted to EN50022-compliant DIN rails. A
keep-out area is required around the unit to provide adequate air flow for cooling purposes.
Extra space should be provided around the connectors to allow for easy installation and
maintenance.
A more detailed mechanical drawing of the GBC is provided in Appendix A: Detailed
Mechanical Drawings.
Electrical Connections
The GBC has standard connectors excluding the DC power connector.
DC Power Connector
The DC power connector provides power to the GBC. The power supply tolerates an input
voltage between 19.2V and 28.8V. At 24V, it will consume no more than 2.5A. Connect an
external power supply to this connector.

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Note: the external supply will have its negative input connected to earth ground through the
GBC’s chassis.
Phoenix Contact 1841909
Manufacturer
Phoenix Contact
Housing
1841909
Housing material
Polyamide UL94V-0
Circuits
3
Wire gauge range
AWG16-24 stranded
Figure 3: MINI-COMBICON DSUB Connector for Connection to DC Power
Table 1: DC Power Connector Pin Assignment
Pin
Connection
Description
Connected to Device
1
+24V
External Power Supply
Input Positive
Connect to external 24Vdc
power supply positive
2
No Connect
Not Connected
No Connect
3
GND
External Power Supply
Input Negative
Connect to external 24Vdc
power supply negative
Pin 3
Pin 1

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Appendix A: Detailed Mechanical Drawings
Weight: 2.5kg
Units: mm
Figure 4: Nuvation BMS™Grid Battery Controller Mechanical Drawing

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Units: mm
35,3
Figure 5: Nuvation BMS™Grid Battery Controller DIN Clip Location
DISCLAIMER: From time to time Nuvation Energy will make updates to the Nuvation BMS™ in response to changes in
available technologies, client requests, emerging energy storage standards and other industry requirements. The product
specifications in this document therefore, are subject to change without notice.