1-4
The algorithm runs as follows:
• Opens the precharge relay if not already open.
• Pulses the DB transistor on in a series of increasing width pulses.
• Measures the resulting capacitor bank voltage drop during each
pulse.
• Verifies the drop is within allowed limits (stored in the power board
EEPROM).
If the resistance measured is out of limits and the DB regulator is
enabled then the ‘DB Resistance Out of Range’ fault is set. If the DB
Regulator is not enabled with this out of limits condition, no fault is set.
But, if some time after power-up the [Bus Reg Mode] parameter is set to
enable the DB Regulator, the fault is set at that time.
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