Curtis 1228 Manual, Rev. F
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rates are scaled linearly between these two endpoints. Four pairs of parameters
define the endpoints of the acceleration/deceleration curves:
Forward acceleration: ACCEL MIN SPD and ACCEL MAX SPD
Forward deceleration: DECEL MIN SPD and DECEL MAX SPD
Reverse acceleration: REV ACCEL MIN and REV ACCEL MAX
Reverse deceleration: REV DECEL MIN and REV DECEL MAX.
The programmed acceleration and deceleration rates are independent of
mode. However, it makes sense to adjust the low speed rates under the slowest
speed conditions (Mode 1) and the high speed rates under the fastest speed
conditions (Mode 2). Tuning the rates under the most extreme (slowest, fastest)
conditions will most likely result in good performance throughout the entire
driving range.
Forward acceleration and deceleration rates
6-a. First, set the ACCEL MIN SPD. Select Mode 1 and set the speed limit pot to its
minimum speed position. For low speed testing, we suggest that you drive
in a confined area such as an office, where low speed maneuverability is
crucial. Depending on how you liked the forward acceleration you experi
-
enced, increase or decrease the
ACCEL MIN SPD value from its default setting.
Smaller values provide faster response. Continue testing and adjusting this
value until you are satisfied with the vehicle’s low speed forward acceleration
behavior.
6-b. Now adjust DECEL MIN SPD, the low speed forward deceleration characteristic.
Driving at full throttle with the speed limit pot still in its minimum speed
position, release the throttle to neutral. Depending on how you liked the
deceleration you experienced, increase or decrease the
DECEL MIN SPD value
from its default setting. Smaller values provide faster response. Continue
testing and adjusting this value until you are satisfied with the vehicle’s low
speed forward deceleration behavior.
6-c. Next, set the ACCEL MAX SPD. Select Mode 2 and set the speed limit pot to
its maximum speed position. Apply full throttle. Depending on how you
liked the forward acceleration you experienced, increase or decrease the
ACCEL MAX SPD value from its default setting. Smaller values provide faster
response. Continue testing and adjusting this value until you are satisfied
with the vehicle’s high speed forward acceleration.
6-d. Driving at full throttle with the speed limit pot still in its maximum speed
position, release the throttle to neutral. Depending on how you liked the
deceleration you experienced, increase or decrease the
DECEL MAX SPD value
from its default setting. Smaller values provide faster response. Continue
testing and adjusting this value until you are satisfied with the vehicle’s high
speed forward deceleration behavior.
Reverse acceleration and deceleration rates
6-e. First, set the REV ACCEL MIN. Select Mode 1 and set the speed limit pot to
its minimum speed position. For low speed testing, we suggest that you
5 — VEHICLE PERFORMANCE ADJUSTMENT