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JAZZY1121/REV C/SEPTEMBER 2002
V I I . O P E R A T I O N
NOTE: The socket may also be used for reprogramming the VSI. Contact your authorized Pride provider for more
information.
Controller Connector
This connects the VSI to the power chair’s batteries, motors, and motor brakes. See figure 16.
3-pin Charger Inhibit Connector
This connects the VSI to the onboard battery charger. See figure 16. This connection provides an inhibit that disables the VSI when the
battery charger is on. The charger inhibit connector is coded with colored dots. The dots are positioned so that you align the flat side of
the male connector with the flat side of the female connector before making the connection.
CAUTION! Failure to properly align the connectors can result in damage to the VSI, the charger,
and the connectors.
Thermal Rollback
The VSI controller is equipped with a thermal rollback circuit. The circuit monitors the temperature of the controller, which roughly
translates to motor temperature. In the event that the VSI controller becomes excessively hot (above 140° F), motor current (amperage)
is reduced. For every degree above 140° F, the motor current limit is reduced by .55 amps until the VSI controller reaches 158° F, at
which time the current output is reduced to zero. This reduces your power chair’s “power,” which could also reduce your power chair’s
speed, and allows the electrical components and motors to cool down. When the temperature returns to a safe level, your power chair
resumes its normal operation.
Troubleshooting
The VSI controller is designed with the user’s safety as the prime consideration. It incorporates many sophisticated self-test features
which search for potential problems at a rate of 100 times per second. If the VSI detects a problem either in its own circuits or in the
power chair’s electrical system, it may decide to stop the power chair, depending on the severity of the problem. The VSI is designed
to maximize the user’s safety under all normal conditions. The table below identifies the individual error codes. Error codes are displayed
as a rapid flashing of the lights. If you get one of these error codes, contact your authorized Pride provider.
1
The battery needs charging or there is a bad connection to the battery. Check the connections to the battery. If the
connections are good, try charging the battery.
2
The left motor has a bad connection. Check the left motor connection.
3
The left motor has a short circuit to a battery connection. Contact your authorized Pride provider.
4
The right motor has a bad connection. Check the right motor connection.
5
The right motor has a short circuit to a battery connection. Contact your authorized Pride provider.
6
The power chair is being inhibited by the battery charger. Unplug the battery charger.
7
A joystick fault is indicated. Make sure that the joystick is in the neutral (center) position before turning on the
controller.
8
A controller system fault is indicated. Make sure that all connections are secure.
9
The parking brakes have a bad connection. Check the parking brake and motor connections. Make sure the
controller system connections are secure.
10
An excessive voltage has been applied to the controller. This is usually caused by a poor battery connection.
Check the battery connections.
FLASHING
LIGHTS
DIAGNOSIS AND SOLUTION
