31
252:
KS OPEN
253:
KM CLOSED
254:
KS CLOSED
2.Fault and elimination methods of walk controller
The main menu alarm log records of controller fault alarm
，
controller has FIFO characteristics.
，
that means when the database has full or new alarm occurs, then the first alarm fault record will be
lostM
。
ALARMIM
Alarm log consists of five information as follow.To distinguish these five types of
alarm.
：
1
）
Alarm code
2
）
the duration of the alarming time
3
）
hour meter of the latest alarm event count.
4
）
the inverter temperature of the latest alarm event count.
When the alarm was revised recently, the function can be further fault diagnosis
。
Note: if the same fault continuously happen, the alarm log will not store that fault again, but will update
the number count of the storage unit
。
hourmeter can show first time occurs alarm, so compared with
controller hourmeter can sure
：
-
First time of alarm occured
-
Hours from the first time alarm accurs up to now
-
Several times alarm from the first time to this day.
14.1 Fault diagnosis system
COMBIAC1 Controller fault diagnosis system can be divided into two groups
ALARMS
：
The fault is will shut off the power unit, and is shut off the power bridge, main contactor
disconnect, activate electric braking
。
.
Cause for fault
：
- Motor or controller fault, the power unit can't drive the vehicle.
-
Security reasons
WARNING
：
The fault is can't stop the truck or stopped by regenerative braking. In other words, the
controller works well, but detect some unfavorable factors will reduce vehicle performance
or the truck will stop under the circumstance of open the power unit.
。
Cause for fault
：
- Wrong operation order
- Impact performance factors
（
such as high temperature
）
14.2 Main microcontroller alarm lists
Error code of
main controller
Error code
Fault state
Fault influence
State of
truck when
testing
Restart
procedure
CAPACITOR
CHARGE
AL60
Await for
traction
Power capacitor
voltage doesn’t
increase
Valve
、
pump motor
，
Traction electric
machine stopped
，
Master contactor is
disconnection,
electromagnetic braking
Start
Request of
valve
、
lift or
traction
