82
No.
Fault name
Common causes
Corrective measures
9
Busbar
average
undervoltag-
e
The busbar voltage value
is below the preset
protection value.
The machine will normally run
again after the bus voltage has
returned to normal, if the fault
recurs.
•
Check that the load switch is
closed.
•
Verify that the bipolar mode is
on.
Confirm that it is not one of the
above causes, consider the
sampling line abnormal and
recommend replacing the control
board.
10
High busbar
voltage
The average value of the
busbar voltage in the
machine is higher than the
protection value.
The machine will normally run
again after the bus voltage has
returned to normal, if the fault
recurs.
•
Check to see if the system
voltage is configured too high.
•
Check
that
the
voltage
protection value is set correctly
in the APP.
Confirm that it is not one of the
above causes, consider the
sampling line abnormal and
recommend replacing the control
board.
Operation & Maintenance Instruction
