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Jet 10 Ultra/RevA/Apr04 www.pridemobility.com 31
VIII. OPERATION
VSI CONTROLLER
The electronic controller is what you use to operate your power chair. It takes the battery voltage and sends it to the
appropriate system. 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 controller is an integral electronic
controller. All of the electronics necessary to operate the power chair are contained in one module. See figure 22. Typically,
the VSI is mounted to one of the armrests and is connected to the motors, batteries, and the onboard charger on the power
base.
The VSI consists of:
1. joystick
2. keypad
3. off-board charger socket
4. charger inhibit connector
5. battery connector
6. motor connector
7. motor 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 position, the faster your power chair moves. When you release the joystick and allow it to return to the neutral
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 22. VSI Controller