20
MicroController Control System
System Operation
Drive Motor Overtemperature Symbol
Drive Motor Overtemperature Symbol
The drive motor thermal switch, held against the
drive motor field, will open if the motor gets too
hot(150˚C).
The logics will reduce drive pulsing. The truck speed
and acceleration will be reduced.
The overtemperature symbol and “Ed” will appear
on until the motor cools.
Pump Motor Overtemperature Symbol
Pump Motor Overtemperature Symbol
The pump motor thermal switch, similar to the drive
motor thermal switch, will open if the motor gets too
hot(150˚C). The logics will reduce pump motor speeds.
The overtemperature symbol and “EP” will appear on
until the pump motor cools.
Chat(Wait) Mode
If the seat switch is closed, key turned to ON and
the direction lever is left in neutral with no other
operator requests, the line contactor will deactivate
after approximately six seconds. The LCD will
display “PP”.
The lift truck will remain in this condition until the
operator activates the direction switch, accelerator
pedal or a control valve lever. The line contactor
then reactivates and the truck is ready for normal
operatation.
Contactor
Contactors should be fitted with a coil corresponding
to the battery voltage. The current absorbed by the
coil must not be greater than 3Amps..
Shunts
The logic monitors the currents which are flowed
through the each Shunts in controller.
Three Shunts are on Drive Armature & Field and
Pump circuits in controller.
Summary of Contents for B20S-3
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