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4.1.2 Main functions and settings
By correctly setting the motor's technical parameters and control technology parameters and
function values of the controller, the electric forklift's safety and high efficiency performance and
complete operation function can be realized.
1, advanced design and production process to ensure the best quality and reliability.
2, a powerful ARM core processor and operating system, while meeting functional tasks and
motor control requirements.
3, reverse braking and regenerative braking. In the vehicle, when the steering rod reverse,
reverse braking signal is generated, it through the motor drive control of traction motor is given a
braking torque, in order to achieve the purpose of deceleration of the vehicle. The braking force is
controlled by the accelerator pedal. Regenerative braking is the relative speed of vehicle higher
traction motor speed conditions produced by the control of the controller, the braking energy can
be converted into electrical energy back to the battery. Especially the electric forklift on the ramp
down sliding slope, in order to properly reduce the vehicle speed to slip down slope, through
appropriate lifting the accelerator pedal, achieve regeneration a brake, extending the battery
charging mileage.
4, the ramp function. The backward slip preventing electric forklift AC traction motor has
excellent function decline on the ramp.
5. The maximum speed of electric forklift can be adjusted. The reasonable setting of the
maximum speed of electric forklift can prevent overloading of traction motor due to excessive
speed.
6, static return off. If seat switch or key switch is disconnected, the control device is turned off.
The direction control rod must be brought back into the middle space to restart. If the driver leaves
the vehicle and returns at any time. This function prevents unexpected unsafe operations from
occurring. There is a time delay of several seconds at the input end of the seat switch. To allow the
seat switch to be temporarily disconnected in the event of a jolt.
7. Safety protection function. If the power component of the controller is damaged in operation,
the controller will disconnect the main contactor in the shortest time; When the temperature rise of
the controller is too high, the controller will automatically limit the armature current of the motor.
When the battery voltage is too low, the controller stops working for safety.
8. The traction motor controller and the oil pump motor controller both have the function of
self-diagnosis. In the process of operation, the controller will display the fault code on the display
instrument once it has a fault, and automatically make the controller stop working. To ensure the
security of the operating system.
9, display meter will show battery power and accumulative hours of work and remote vehicle
management mode.
4.1.3 Maintenance of Circuit system
(1) Check contact wear condition; replace contact when it has worn. Contact contact should be
checked once every 3 months.
(2) Check pedal or handle fretting switch; measure voltage drop at both ends of fretting switch,
no resistance when fretting and closing, clear sound when released. Check every 3 months.
(3) Check main circuit: battery-controller-motor connection cable. Ensure cable insulation is
good and circuit connection fastens. Check every three months.
(4) Check the mechanical movement of the pedal. See if the spring can deform normally, and
whether the potentiometer spring can reach the maximum level or set level. Check every three
months.
(5) Check the mechanical movement of the contactor; should move freely and without
adhesion, the mechanical movement of the contactor should be checked every 3 months.
4.1.4 Combination Instrument
IDD is a vehicle-mounted instrument based on CAN and wireless communication, which can
display vehicle speed, working time, battery power, Chinese and English display, password
