Wesley BCT-6200-6SA - Manual (Page 69)

Curtis 1243
GEN
2 Manual, Rev. B 61
5 — VEHICLE PERFORMANCE ADJUSTMENT
STEP
5. For Walkie/Rider Applications: Typically, different top speeds are
desired for walkie and rider operation. To tune a walkie/rider
vehicle’s top speed, first tune it for rider operation by using the
Field Min parameter. Then, to set the top speed for walkie op-
eration, leave the Field Min parameter alone and decrease the
Max Speed parameter until the desired walking vehicle speed is
reached.
4 Equalization of Loaded and Unloaded Vehicle Speed
The top speed of a loaded vehicle can be set to approach the unloaded top
speed by tuning the Field Map Start and Load Compensation parameters. It is
recommended that you review the description of the Field Map Start and Load
Compensation parameters in Section 3 before starting this procedure.
STEP
1. The vehicle’s unloaded top speed should already have been set. If
it was not, it should be set before the vehicle’s loaded top speed
is established.
STEP
2. Once the vehicle’s unloaded top speed has been set, load the ve-
hicle to its desired load capacity. Leave the Field Min and Speed
Max parameters at the settings determined during the unloaded
test.
STEP
3
A
. If the intent is to minimize the difference between the loaded
and unloaded vehicle speeds, then:
(i) Drive the fully loaded vehicle on flat ground with full throttle
applied. When the vehicle reaches maximum speed, observe
the armature current displayed in the programmer’s Monitor
Menu.
(ii) Set the Field Map Start parameter slightly higher than the
observed armature current value.
(iii) Test the loaded/unloaded speed variation. If the observed
variation is unacceptable, proceed to “(iv).”
(iv) Increase the Load Compensation parameter and retest the
speed regulation. The Load Comp parameter can be increased
until the desired regulation is achieved or the vehicle begins to
oscillate (“hunt”) at low throttle. If the loaded/unloaded speed
variation is acceptable but the average speed is not, adjustments
can be made to the Field Min parameter.
STEP
3
B
. If the intent is to make the loaded speed less than the unloaded
speed (for reasons of safety, efficiency, or reduced motor heating),
then:
(i) Unload the vehicle and drive it on flat ground with full throttle
applied. When the vehicle reaches maximum speed, observe the
armature current displayed in the Monitor Menu.