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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.
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.
If the parameter of the “SAFE OUT CONFIG” is 1, the
fault may occur. If the traction seat switch signal is
different from the pump controller sear switch signal, the
fault may occur. Check the seat switch connecting.
In CAN communication network, a controller receives a
signal that the other controller can not make normal
communication and the controller always is always in the
waiting state until CAN communication network is
completely normal. Check why the wiring of the modules
that fails to communicate is abnormal and see if the
software edition or parameter setting is correct.
During startup, watchdog circuit is activated before
software is started. The watchdog signal is invalid in
standby or operation state( alarm state)
Fault analysis：Hardware circuit of watchdog or output of
micro-controller is damaged. The above two cases have
nothing to do with external parts, so change the controller.
Cause：During startup, the watchdog circuit is activated
before software is started. The watchdog signal is invalid
(alarm state)in case of standby or operation state.
Fault analysis: The hardware circuit of watchdog or
output of micro-controller is damaged. The above two
cases has nothing to do with external parts, so change the
controller.
When the safety input switch is off, so is the main
contactor, meanwhile the electromagnetic brake or
auxiliary output coil is driven. Check if the port of A11 is
correctly connected. Change the controller if other parts
are correct.
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