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3. Exit the Service Lockout by clicking Exit Service Lockout
Exiting Service Lockout may close contactors
You will be able to access the dashboard controls once Nuvation Energy BMS has successfully exited
service lockout.
6.5.3. Shutdown Timer for Low-Voltage BMS
To protect your batteries, the Low-Voltage BMS automatically shuts down after an hour of being in
Service Lockout.
If BMS-Enable is asserted, this built-in protection will be disabled and the Low-Voltage BMS will
remain powered up after 1 hour has expired. Note, the Low-Voltage BMS will apply a small load on
the cells even in Service Lockout so disabling the automatic shutdown must be done with care as it is
possible to over-discharge the cells if left in this state for a significant duration.
6.5.4. Service Lockout Troubleshooting
If Nuvation Energy BMS fails to exit service lockout, you will receive an error notification. The reason
for the failure is that some form of input to the battery management system could not be initialized.
This means that the battery management system was expecting some measurement (e.g. cell
voltage, current) but it never was received by the software. Because of this lack of initialization, the
battery management system should not be operated and the issue(s) needs to be resolved. There are
two main causes for a lack of initialization:
▪
Misconfiguration: The current configuration does not match the battery management system
deployment.
▪
Incomplete setup: There is an issue in the setup of the battery management system (e.g. cables
are missing)
You can identify the uninitialized parts of the battery management system by referring to the Details
> Safety accordion section. The fault registers that failed to initialize are shown on the right side of
the display.
Refer to
Section 10.1
for details on how to address the uninitialized data registers.
If you just imported a configuration file, re-import a known-good configuration file. You can download
Document ID: NE-PM-002
Nuvation Energy Low-Voltage BMS - Product Manual
79
Rev 1.2, 2021-03-03
Curie Update 1
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Table of Contents
Troubleshooting
