Diagnostics Faults - Nuvation Energy NUV300-BC-12 Product Manual

sc_fault_fault_pilot_state_mismatch
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Fault that is generated when the fault pilot state set by the stack controller subsystem does
not match the detected state on the power interface subsystem
10.1.6.1. Initialization Issues

10.1.7. Diagnostics Faults

stack_fault_cell_open_wire
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Fault indicating there is an open wire on an installed cell channel
▪
This can also trip due to misconfigured or incorrectly installed cells
stack_warn_cell_open_wire
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Warning triggering on the same data as stack_fault_cell_open_wire
stack_fault_therm_circuit_fail
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Fault indicating there is a circuit failure on a thermistor channel on the Low-Voltage BMS or on
the expansion Cell Interface module
▪
This can also trip due to misconfigured or incorrectly installed thermistors
stack_fault_ci_therm_consistency
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Fault indicating the difference between thermal readings on the Low-Voltage BMS or on the
expansion Cell Interface module is too large
sc_fault_ci
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Fault indicating there was an internal hardware failure on the Low-Voltage BMS or on the
expansion Cell Interface module
stack_fault_open_shunt
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Fault indicating the current shunt is open circuit
stack_fault_short_shunt
▪
Fault indicating the current shunt is short circuit
When experiencing difficulty clearing this fault, please refer to
10.1.7.1. Known Issues
10.1.7.1.1. Short Shunt Fault on Exiting Service Lockout
Issue
In rare occasions, the stack_fault_short_shunt can accidentally trip when exiting service lockout. If
the contactors remain open and no current has flowed through the batteries, the fault does not
indicate a short on the current shunt. Note that this issue only occurs within a minute of exiting
service lockout and faults that happen outside this window should be investigated further.
Document ID: NE-PM-002
Nuvation Energy Low-Voltage BMS - Product Manual
Section 10.1.7.1.
165 Rev 1.2, 2021-03-03
Curie Update 1