V I I . O P E R A T I O N
VSI ELECTRONIC CONTROLLER
The electronic controller is what you use to operate your power chair. The electronic controller enables you to move the power chair, as well as monitor battery charge, electronic controller functions, and the condition of your electrical system. The VSI electronic controller is an integral electronic controller.All of the electronics necessary to operate the power chair are contained in one module. See figure 21. Typically, the VSI is mounted to one of the armrests and is connected to the motors, batteries, and the onboard charger at the power base.
The controller supplied with your power chair has been
WARNING! The controller program can affect speed, acceleration, deceleration, and brak- ing. If it is programmed incorrectly or outside of the safe limits as determined by your healthcare professional, it can create a dangerous situation. Only the power chair manu- facturer, an authorized representative of the manufacturer, or a trained service techni- cian should program the controller.
The VSI consists of:
1.joystick
2.keypad
3.
4. controller connector
5. charger inhibit connector
Joystick
The joystick controls the direction and speed of your power chair. When you move the joystick from the neutral (center) position, the electromagnetic brakes release and allow your power chair to move. The farther you push the joystick from its neutral posi- tion, the faster your power chair moves. When you release the joystick and allow it to return to the neu- tral position, you engage the electromagnetic brakes. This causes your power chair to decelerate and come to a complete stop.
WARNING! If your power chair begins to move in an unexpected manner, immediately release the joystick. Unless the joystick is damaged, this
action should stop your power chair. Figure 21. VSI Controller
Keypad
The keypad is located in front of the joystick. It contains keys necessary to operate your power chair. See figure 22.
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