Chapter 4: Programming the Rhino2
Notes:
This test procedure causes the motor to become hot. For this reason, the resulting
value for Load Compensation is too high. Reduce Load Compensation by 20% to
make sure that the scooter is still comfortable to drive when the motor is cold.
A new motor usually has a higher motor resistance than a motor that has been used
for some time, because the motor brushes that are inside the motor do not make
optimal contact until they are "worn in". If possible, perform this procedure when the
motor has been used for several hours.
4.4.5.6 Maximum Load Compensation
Maximum Load Compensation
DS90, DS120:
200mΩ
DS160:
100mΩ
This parameter sets the maximum value that the Load Compensation parameter can be set to.
This value must be set by the OEM to match the motors of the scooter.
Maximum Load Compensation prevents the dealer from setting Load Compensation to a
value that is too high, which can be dangerous.
4.4.5.7 Load Compensation Damping
Load
Compensation
Damping
Load Compensation Damping is used to dampen the effects of the load compensation to
avoid bucking and instability at high Load Compensation settings.
The recommended value for this parameter is between 25 – 50%. It‟s important to avoid
higher values of Load Compensation Damping as this can lead to the load compensation
continuing to be applied when the motor current has fallen, causing problems such as the
scooter continuing to surge forward after, for example, climbing an obstacle.
The Load Compensation Damping parameter interacts with the following parameters:
Remembered Load Compensation
Load Compensation
Park Brake Neutral Delay
When setting these parameters, follow the method below:
1. Adjust the Load Compensation parameter first to give correct driving performance.
2. Adjust Load Compensation Damping to minimise bucking, while keeping the system
responsive.
3. Adjust the Park Brake Neutral Delay parameter to provide acceptable rollback on
slopes and prevent jerking – higher values decrease jerking but give more rollback
and vice versa.
4. Adjust the Remembered Load Compensation to give acceptable starting
performance when the park brakes are released, both when driving on the flat and
on slopes. (Note: this parameter has no effect if the scooter stops and restarts driving
quickly such that the park brakes are never applied.)