Vivid V4 - Maintenance of the Speed Controller

7.4 Maintenance of the Speed
Controller
The speed controller of the vehicle adopts high frequency
MOS technology to realize the control of speed, torque and
brake with smoothness, silence, high eciency and ener-
gy-save.
• Prevent the vehicle runs way when starts. When the
vehicle starts, the controller will inspect signal from the
accelerator, if signal exceeds 20%, the HPD (protection
unit in the controller) will prohibit the output of controller.
• When the vehicle starts, the SRO (protection unit in the
controller) will eect.
The controller will self-check when the vehicle is running. If any
defect inspected, the controller will stop the vehicle to protect
the operator and the vehicle.
Periodical Maintenance:
1. Check if the contact between contacting points of the
contactor is in good condition, check if any contact sticks or
is jammed mechanically.
2. Check if the micro switch in the accelerator can be switched
on and o properly.
3. Check if the switch for turn signal can be switched on and
o properly.
4. Check if all the connections between the motor, the battery,
and the controller are in good condition.
21