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value of parameter “ADJUST BATTERY” of controller is
consistent with battery voltage.
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.
Fault of
contactor
driver
The coil of main contactor can not be normally driven and
change the controller if the coil of main contactor has no
fault.
Detection time : Standby state
The alarm indicates the voltage of accelerator is 1V larger
than the min. value set in the signal scope （PROGRAM
VACC）of accelerator.
Possible causes：
(1) The upper and lower voltage limit values of
accelerator have not been collected and do it again when
entering into PROGRAM VACC.
(2) Accelerator error: Accelerator pedal possibly fails to
return or internal error of accelerator.
(3) The failure of controller
Incorrect
starting
sequence
Possible causes for incorrect starting sequence:
(1) Direction switch is closed before starting.
(2)Incorrect operation sequence.
(3)Incorrect wire joining.
(4)If the trouble still can not be eliminated, change the
controller.
Forward and
backward
signals exist
at the same
time(adhesion
of direction
switch )
The machine will keep on detecting. But when there are
signals requesting operation from two directions at the
same time, alarm is given. Possible causes:
(1) The wire is damaged.
(2) Direction switch fault.
(3)Improper operation.
(4) Change the controller if the trouble still can not be
eliminated.
The controller detects the great difference between two
consecutive speed readings of encoder. As the encoder in
the system can not change great speed within very short
time, so, the encoder may have the trouble (the circuits of
one or two encoders are destroyed or broken). Check the
mechanical and circuit function of the encoder. The alarm
is possibly caused by the electromagnetic noise on the
bearing of sensor. If not, change the controller.
Programming
error of
accelerator
If “2.5 POT” is set as “ON”, controller will check the
max. and min values of potentiometer recorded during
programming. If the min. value of forward is smaller than
the max. value of backward or the min. value of backward
is bigger than the max. value of forward, the fault will
appear. Check if the potentiometer is correct, or make a
data acquisition again.
In CAN communication network, a controller receives a
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