PG DRIVE TECHNOLOGY NEWVSI, Technical Manual

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PG D
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VSI T
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2.18 Safety Fences
PGDT accepts no liability for losses of any kind if the chair manufacturer does not specify
appropriate safety fence values for a particular vehicle application. Chapter 3 Section 2.1.
2.19 Joystick Stationary Time & Joystick Stationary Range
The values of both these parameters have been selected by the wheelchair manufacturer in order
to minimise the risk of motor damage. Do not adjust these values without consulting the
wheelchair manufacturer. PGDT accept no liability for losses of any kind resulting from the
adjustment of these parameters. Chapter 3 Section 6.9 & 6.10
2.20 Motor Compensation
Never exceed the 70% relationship described above.
The chair manufacturer is responsible for ensuring that the controller is matched to the motor
resistance. Failure to do this may result in poor control characteristics, which in extreme
instances can make a chair uncontrollable and potentially unsafe. PGDT accepts no liability for
losses of any kind arising from failure to comply with this condition
.
The chair manufacturer is responsible for always ensuring that any replacement motors or
gearboxes are fully compatible with the originals that the controller was designed to match.
Failure to do this may result in poor control characteristics, which in extreme instances can make
a chair uncontrollable and potentially unsafe. PGDT accepts no liability for losses of any kind
arising from failure to comply with this condition.
Users must not move a controller from one chair type to install it on a different chair type.
controllers with different part numbers may have both hardware and software differences to
ensure that they are compatible with the electrical and dynamic characteristics of their specific
target vehicles. The characteristics of one type of controller may not be compatible with a
different, unauthorized chair. Failure to observe this warning could result in an unsafe set-up for
the wheelchair user and may create a fire hazard depending on the motors, wiring, connectors
and circuit breakers installed on the unauthorized chair. PGDT accepts no liability for losses of
any kind arising from failure to comply with this condition. Chapter 3 Section 7.2.
2.21 Torque
Ensure that the motor compensation is set correctly for the chair, torque does not counter the
effects of incorrect compensation settings. Chapter 3 Section 7.6.
2.22 Tremor Damping
The higher Tremor Damping is set the slower joystick response will become.
When setting Tremor Damping, pay particular attention to stopping distances. As the parameter
dampens the response to the joystick commands, stopping distance can be affected. To stop the
wheelchair with Tremor Damping activated you must release the joystick and allow it to center. It
is the responsibility of the wheelchair manufacturer to ensure requirements on stopping distances
are adhered to. Chapter 3 Section 7.7.