Dynamic DX Power Module PMB Installation Manual page 47

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Temp. Dependent Load Comp.
The motor resistance, wiring resistance and controller internal resistances all
increase with increasing temperature. If this setting is set to 'on', the chair will
automatically compensate for these factors and calculate a value that will
alleviate any lurching motions from the chair caused by temperature extremes.
Current Limit
The Current Limit defines the controller's sustained motor current limit value.
Each motor's current will be limited to this value until it is rolled back as the
controller heats up (typically after 60 seconds at 60 Amps).
For the PM-S, the current for each channel is set to 50A. The actual current
in the single drive motor is 100A, twice the programmed value displayed by
the Wizard.
Do not set the current limit too high for the type of motor used.
Veer Compensation
Veer Compensation is the adjustment of the neutral steering position so that
the wheelchair does not veer due to unbalanced motors when the joystick is
pushed directly forwards or backwards. This parameter should be adjusted
when a motor is replaced.
This parameter will have no effect on the PM-S. If, however, a Servo Steered
DX System has two drive motors controlled by a PM, PM1 or PM2, Veer
Compensation does have some effect.
The SLM also has a Veer Compensation parameter which controls the
steering position with respect to the steering motor. The PM Veer
Compensation parameter is used, in a Servo Steered system, to balance the
load on the two drive motors. This is achieved by adjusting the Veer
Compensation so that the current to both drive motors is equal.
See the later HHP Operation section for Veer Compensation adjustment.
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