Chapter 4: Programming the Rhino2
4.4.2 Throttle Configuration
4.4.2.1 Throttle Type
Wig-wag
Single-ended
Uni-polar
Wig-wag - The throttle controls speed and direction, no Forward/Reverse switch is
required. The neutral position is the centre position of the pot.
If the throttle is moved out of the centre position in one direction, the
scooter drives forward. If the throttle is moved out of the centre in the
opposite direction, the scooter drives in reverse.
Single-Ended - The throttle controls speed only. The neutral position is at the start of the
pot. The direction of the scooter is selected with a Forward/Reverse switch.
Uni-polar - The throttle controls speed only. The neutral position is the centre position of
the pot. If the throttle is moved out of the centre position in either direction,
the scooter starts to drive in the direction that has been selected with the
Forward/Reverse switch. This allows left-handed and right-handed
operation of the same wigwag without reprogramming the scooter.
The standard direction of the scooter can be swapped with Swap Throttle Direction (4.4.1.3).
If a Forward/Reverse switch is needed, connect it to one of the Multi-function Inputs (3.11.1),
and set the corresponding Pin [X] Function parameter (see 4.4.9) to 'Reverse Drive'.
For schematics, see Throttle Configuration (3.10).
4.4.2.2 Throttle Input
Single - Use for a standard throttle with a single wiper.
Dual - Use for a throttle with 2 linear wiper signals that are each other's opposite.
In the extreme positions, one wiper is set to the minimum value and the
other wiper is set to the maximum value. In the halfway position, both
wipers have the same value. The RHINO2 checks both signals for
consistency: the sum of both signals must be a constant value, equal to the
maximum value. If the sum of the signals is more than 10% lower or higher
than the expected maximum value, the scooter stops and a throttle fault is
shown on the Status light.
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