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stack_fault_discharge_current_hi
▪
Fault that is triggered when the stack current is above the high discharge fault threshold.
stack_fault_charge_current_hi
▪
Fault that is triggered when any stack current is above the high charge fault threshold.
stack_fault_charge_current_under
▪
Fault that is triggered when any stack current is above the over charge fault threshold.
10.1.4.1. Initialization Issues
The stack current is measured from the Stack Switchgear unit's internal Power Interface module's
Analog Front End (AFE). The following issues can contribute to these faults not initializing:
1. Stack Switchgear unit's internal Power Interface module's AFE is not enabled.
•
This may occur if the Stack Switchgear configuration file is incorrectly modified. Contact
support@nuvationenergy.com
2. Communication failure between the Stack Switchgear unit's internal Stack Controller and Power
Interface modules
10.1.5. Pre-charge Faults
stack_fault_precharge_timeout
▪
Fault that is triggered at the end of the pre-charge period if the measured current exceeds the
maximum pre-charge current
stack_fault_precharge_over_current
▪
Fault that is triggered at any time during the pre-charge connection period if the stack current
exceeds the fault threshold
10.1.5.1. Initialization Issues
These faults are directly related to the current faults detailed previously. Refer to
details.
10.1.6. Contactor Faults
stack_fault_coil_fail
▪
Fault that is generated when there is a difference between the commanded state of the
contactor coil and the observed state read from the hardware. This fault is a consistency check
on the drive state of the coil. This fault will trigger when contactors are unconnected or have a
short in their circuit. If the fault pilot signal is asserted, this fault will trigger and can not be
used to determine if there is a inconsistent contactor drive state.
Document ID: NE-PM-003
Nuvation Energy High-Voltage BMS - Product Manual
for a valid configuration file for the Stack Switchgear.
86
Section 10.1.4.1
for
Rev 1.2, 2021-03-03
Curie Update 1
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