No. 60027, Issue 4. January 1998
10 Safety and Miisuse Warnings39
Parameter Purpose
Pot Voltage Tol Specifies the tolerance of the Left Lock and Right
Lock, in % of total pot travel. If the pot position
Range 0 - 50 % falls within this tolerance then a Steering Fault
Accessed by : DCL (SLM Flash Code 3) is displayed by the SLM (refer
to Diagnostics section 8).
This value is typically set to half the Lock Margin
Value.
Lock Margin The lock margin voltage ratio, added or subtracted to
Left Lock and Right physical Locks. It should be
Range 0 - 50 % set so that the SLM will target the positions of
Accessed by : DCL maximum steering deflection when the joystick is
deflected fully left or right.
It must be set higher than the Pot Voltage Tol
parameter to avoid an error when the wheelchair is in
full left or right lock.
Warning: Setting Max Pot End V too high or Min Pot End V too low may
prevent some position sense potentiometer faults being detected.
Max Pot End V The maximum allowable voltage at the + end of
the position sense potentiometer. If the voltage
Range 3200 - 5000 mV exceeds this value, a Steering Fault (SLM Flash
(3.2 - 5V) Code 3) is displayed by the SLM.
Accessed by : DCL A suggested value is 4.75V for a 10K ohm
potentiometer.
(Refer to Diagnostics section 8)
Min Pot End V The minimum allowable voltage at the + end of the
position sense potentiometer. If the voltage is less
Range 3000 - 4900 mV than this value, a Steering Fault (SLM Flash
(3 - 4.9 V) Code 3) is displayed by the SLM.
Accessed by : DCL A suggested value is 4.3V for a 10K ohm
potentiometer.
(Refer to Diagnostics section 8)
Parameter Purpose
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