Page F-1
Repair and Service Manual
B
B
ELECTRONIC SPEED CONTROL
Read all of Section B and this section before attempting any procedure. Pay particular attention to Notices, Cautions, Warnings and Dangers.
PERFORMANCE
The vehicle will operate only when the Run - Tow/Maintenance
switch is in the ’RUN’ position. See “Diagnostic Mode Feature”
on page 2
The options are defined as follows (Ref Fig. 1):
Fig. 1 Performance Characteristics
The vehicle’s top speed is sensed and regulated directly
by the controller and the feature to slow the vehicle
when the accelerator pedal is up is mild.
Speed Control
To prevent the possibility of loss of control that
could cause severe injury or death, use service
brake to control speed. The controller system
is not a substitute for the service brake.
Vehicle models are equipped with a motor control sys-
tem.
Example: If all of the following events occur...
a)
the vehicle is being driven down a slope
b)
the vehicle attempts to exceed the specified top
speed with the accelerator pedal depressed
or
released
the motor control system will limit the speed of the vehi-
cle to the specified top speed (the warning beeper will
not
sound). When the system is activated by this
sequence of events, the motor generates power which is
returned to the batteries.
If the operator attempts to override the feature by mov-
ing the direction selector or key switch to another posi-
tion, the warning beeper will sound and the vehicle will
slow
rapidly
until it reaches the speed of approximately
2 mph (3 kph).
Pedal-Up Feature
The pedal-up feature slows the vehicle when the accel-
erator pedal is released while the vehicle is moving
between 8 mph (13 kph) and the vehicle’s top speed.
Example: If all of the following events occur...
a)
the vehicle is being driven down a slope
b)
the accelerator pedal is released for more than
one second
the pedal-up feature will slow the vehicle (the warning
beeper will
not
sound) until either the vehicle speed is
reduced to 8 mph (13 kph), at which it freely coasts
between 8 and 3 mph (5 kph), or the accelerator pedal is
applied. When pedal-up feature is activated by this
sequence of events, the motor generates power which is
returned to the batteries.
Walk-Away Feature
Walk-Away limits vehicle movement without driver input,
slowing the vehicle to 2 mph (3 kph) and sounding an
audible alarm (reverse beeper).
Example: If all of the following events occur...
a)
the vehicle has been stopped for more than 1.5
seconds
b)
the accelerator pedal has been released for more
than one second
c)
the vehicle begins to roll above 2 mph (3 kph)
the walk-away feature will limit speed to approximately 2
mph (3 kph) and the warning beeper will sound. When
the accelerator pedal is depressed, the walk-away fea-
ture and warning beeper will be overridden and normal
vehicle operation resumes. Any unusual situation
sensed by the controller will cause a similar response.
The system functions in all key switch positions.
Anti-Roll Back Feature
Anti-Roll Back, like Walk-Away, limits backward motion
of the vehicle down an incline to less than 2 mph (3
kph). See ‘Walk-Away Feature’ above.
Anti-Stall Feature
Anti-Stall protection prevents motor damage from stall-
ing the vehicle against an object or on a hill.
Example: If all of the following events occur...
a)
the system senses that the accelerator pedal is
depressed (power applied to motor)
b)
the motor is stalled long enough that any more
time may cause motor damage
the controller will momentarily interrupt power to the
motor. This brief interruption will permit the vehicle to roll
Performance
Top Speed
Pedal-Up
Speed Control
No plug
13.5 mph
(22kph)
Mild
NOTICE
Summary of Contents for EXPRESS L6 2012
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