VANNER
Incorporated
OWNER’S MANUAL
Vanner High Voltage DC-
DC Converter OWNER’S MANUAL
18
HBA Status and Fault Indications Cont'd
Input Overvoltage Fault:
The HBA will perform a soft shutdown if the input voltage is above 800V
and below 850V. It will restart automatically once the input voltage drops below 750V. If the input
voltag
e exceeds 850V, the converter will “permanently” shut down. The unit will not restart
automatically if the input voltage drops below 750V, the ignition switch must be cycled off and on.
Input Under Voltage Fault:
The HBA will perform a soft shut down if the input voltage drops below
500V. Once the input voltage is equal to or greater than 550V, the converter will restart
automatically.
Output Overvoltage Fault:
The HBA will perform a soft shutdown if the low voltage battery exceeds
32V. The HBA will restart automatically if the voltage returns to the normal operating range of 16 -
32V.
Output Under Voltage Fault:
If the low voltage battery drops below 15V, the HBA will perform a soft
shutdown. The converter will restart automatically if the voltage returns to the normal operating range
of 16
– 32V.
Output Overload Fault:
The HBA is current limited to 250A or 300A. If the load is above 250A or
300A, the unit will begin current limiting and gradually reduce the output voltage. Once the HBA
output voltage decreases to a value less than or equal to the battery voltage, the batteries will begin
to assist in supporting the load. If the load continues to increase and the output voltage drops to 20V,
the output current will begin to fold back. If the output or battery voltage is reduced to 16V, the HBA
will turn off. The HBA will restart automatically if the loads are reduced and the battery voltage
returns to the normal operating range of 16 - 32V.
Over Maximum Current Fault:
The HBA will perform a soft shutdown if the current flowing through
an internal power stage current transformer exceeds 90A. The HBA will restart automatically if the
current returns to a value below 90A.
+12V Power Supply Failure Fault:
The HBA will perform a permanent shutdown in the event of a
+12V power supply failure. The unit should be replaced and the failed unit returned to Vanner for
evaluation.
LV Gate Drive +12V Failure:
The HBA will perform a permanent shutdown in the event of a LV Gate
Drive +12V power supply failure. The unit should be replaced and the failed unit returned to Vanner
for evaluation.
