GBK60027 DX-SLM Installation Manual Issue 5
7.3.3.3
Lock Margin
Parameter
Possible Values Default
HHP Lite Std Adv
Lock Margin
0 - 50 %
2 %
-
-
-
The lock margin voltage ratio; added or subtracted to Left and Right physical Locks. It
should be set so that the SLM will target the positions of maximum steering deflection
when the joystick is deflected fully left or right.
It must be set higher than the Pot Tolerance parameter to avoid an error when the
wheelchair is in full left or right lock.
7.3.3.4
Pot Tolerance
Parameter
Possible Values Default
HHP Lite Std Adv
Pot Tolerance
0 - 50 %
1 %
-
-
-
Specifies the tolerance of the Left Lock and Right Lock in % of total pot travel. If the
pot position falls within this tolerance then a Steering Fault (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.
7.3.3.5
Maximum Pot End Voltage
Parameter
Possible Values Default
HHP Lite Std Adv
Maximum Pot End Voltage
3203 - 5000 mV
(3.2 - 5 V)
4804 mV
-
-
-
The maximum allowable voltage at the + end of the position sense potentiometer. If
the voltage exceeds this value, a Steering Fault (SLM Flash Code 3) is displayed by the
SLM. A suggested value is 4.75V for a 10K ohm potentiometer.
(Refer to Diagnostics section 8)
7.3.3.6
Minimum Pot End Voltage
Parameter
Possible Values Default
HHP Lite Std Adv
Minimum Pot End Voltage
2988 - 4833 mV
(3 - 4.9 V)
4492 mV
-
-
-
The minimum allowable voltage at the + end of the position sense potentiometer. If
the voltage is less than this value, a Steering Fault (SLM Flash Code 3) is displayed by
the SLM.
A suggested value is 4.3V for a 10K ohm potentiometer.
(Refer to Diagnostics section 8)
Warning:
Setting Maximum Pot End Voltage too high, or Minimum Pot End Voltage too
low, may prevent some position sense potentiometer faults being detected.
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