Troubleshooting; Faults And Initialization Issues; Cell Voltage Faults - Nuvation Energy NUV300-BC-12 Product Manual

10. Troubleshooting

10.1. Faults and Initialization Issues

During initial setup and configuration of a Nuvation Energy BMS, there are two main classes of issues
that can be encountered:
1. Initialization issues
2. Triggering of faults
The first class of issues are encountered during initial deployment of a Nuvation Energy BMS,
particularly while attempting to exit Service Lockout. When this event occurs, an operator of the
Operator Interface can open the Details|Safety accordion
of fault and warning triggers that may or may not be initialized. This section will provide details on
why the faults/warnings could not be initialized. Once all faults/warnings have been initialized,
Nuvation Energy BMS has been configured and installed as expected (i.e. all inputs are receiving
data). When this occurs the software enters its operational mode.
The second class of issues occurs while Nuvation Energy BMS is operational. One or more faults can
be triggered causing Nuvation Energy BMS to exit its operating condition and open all contactors.
There are many faults that can be triggered. This section will describe the condition the fault monitors
and the meaning when that fault is triggered.
The following sections describe different classes of faults/warnings and issues surrounding any
initialization. In general, all warnings have a similar trigger condition as their corresponding fault. The
following discussion will focus on the term fault and all descriptions can be applied to the compatible
warning.

10.1.1. Cell Voltage Faults

stack_fault_cell_over
▪
Fault that is triggered when an installed cell voltage is above the over fault threshold
stack_fault_cell_hi
▪
Fault that is triggered when an installed cell voltage is above the high fault threshold
stack_fault_cell_lo
▪
Fault that is triggered when an installed cell voltage is below the low fault threshold
stack_fault_cell_under
▪
Fault that is triggered when an installed cell voltage is below the under fault threshold
10.1.1.1. Initialization Issues
These faults could fail to initialize through a number of possible conditions such as:
1. Missing or misconfigured Low-Voltage BMS or Cell Interface modules, preventing the software
from scanning for the measurements
Document ID: NE-PM-002
Nuvation Energy Low-Voltage BMS - Product Manual
(Section 6.2.4). That screen presents a list
161 Rev 1.2, 2021-03-03
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