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non-operation current. The trouble has nothing to do with
the peripheral parts, so the controller needs to be changed.
When the electric lock is switch on, inverter will charge
the capacitance through power resistance and check if
capacitance is fully charged within the time stipulated,
otherwise, the capacitance voltage remains 20% lower
than battery voltage, the inverter will give alarm and the
main contactor will not close.
Possible causes：
(1) Peripheral equipment, e.g. DC-DC, motor or other
equipment etc interfere with the charging process of
controller and these interferences need to be eliminated.
(2) The charging resistance is disconnected, there is fault
on charging circuit and power module ,so controller needs
to be changed.
In case that total power is allowed, the temperature of
controller exceeds 85℃( it relates to the parameter
“ MAXIMUM CURRENT”.)
Their corresponding relations are as follows: Parameter
set alarm temperature
MAXIMUM CURRENT=50% 96℃
MAXIMUM CURRENT=60% 94℃
MAXIMUM CURRENT=70% 92℃
MAXIMUM CURRENT=80% 90℃
MAXIMUM CURRENT=90% 88℃
MAXIMUM CURRENT=100% 86℃
Now, the max. current of controller decreases with the
increase of the max. current temperature. When the
temperature is 105℃, the current of controller decreases
to zero.
The fault appears if chopper is in the cold state:
(1) Temperature calibration parameter of logic card is
incorrect, check parameters.
(2) The internal temperature sensor of controller has
trouble and change the controller.
If temperature digital switch of motor is turned on or
analog signal exceeds the cutoff value, the trouble is
produced. When the motor temperature reaches 120℃, the
controller gives alarm, the vehicle can move at this time.
But the max. current and performance are cut down.
When the motor temperature reaches 125℃, motor stops
working. Now try to lower the temperature of the motor.
If the fault still exists when motor is cooled, check the
circuit and change the controller if he circuit is OK.
When electric lock is close, the microprocessor will detect
if driver of main contactor is short-circuited and alarm
will be given if yes. Check if there is short circuit on the
positive pair A 16 of main contactor coil or negative pole.
Change the controller if everything is OK.
Detection time : Standby state
The alarm indicates the voltage of accelerator is 1V larger
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