MT
4.3.2.9 Motor Stall
43
Parameter Possible Values Default Rev HHP Lite Std Adv
Stall Timeout No / Yes Yes -,A -
Stall Time 5 – 50 s 15 s -,A -
If the joystick is deflected but the powerchair can not drive because
• It is on a slope that is too steep
• It tries to climb up a curb that is too high
• It is trapped
the maximum current (as set by the
Current Limit parameter, see section 4.3.2.1) will
flow through the motors continuously, because the motors are still trying to drive. This
situation is called motor stalling.
Motor stalling can cause motor damage when the motor becomes too hot. To
prevent motor damage, Stall Timeout disables drive after Stall Time seconds of
maximum continuous current.
If a stall timeout has occurred, the powerchair will not drive and Flash Code 11
(see
9.6) will be displayed on the System Status LED of the DX Master Remote.
To reset the system, switch it off and switch it back on again.
Note:
Some safety standards specify a particular Stall Time.
4.3.2.11 Motor Continuity Test
Parameter Possible Values Default Rev HHP Lite Std Adv
Motor Continuity Test No / Yes Yes -,A -
Every time before the powerchair starts to drive, Motor Continuity Test checks that the
motors connections are not loose.
Always set this parameter to 'Yes', except if motor faults occur because
• the motor brushes frequently lose contact after the motor has stopped
• the motor resistance is higher than approximately 1 Ω, which causes the
Power Module to think that the motor has an open circuit.
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