Curtis 1244 Manual, Rev. E
35
throttle map setting, as the throttle input increases and will reach maximum
output when the throttle input enters the upper deadband (crosses the throttle
max threshold).
Fig. 17 rottle maps for
controller with maximum
speed set at 80% and creep
speed set at 10%.
e rottle Map operates within the window established by the Creep
Speed, Max Speed, rottle Deadband, and rottle Max parameters, as shown
in Figure 18. Creep Speed and Max Speed define the controller’s output range,
while rottle Deadband and rottle Max define the throttle’s active range.
ese four parameters, together with the rottle Map, determine the controller’s
output response to throttle demand.
Fig. 18 Inuence of various
parameters on controller
output response to throttle
demand.
THROTTLE INPUT (percent of active range)
CONTROLLER OUTPUT (PWM percent)
80%
60%
50%
40%
30%
20%
THROTTLE MAP
100
90
80
70
60
50
40
30
20
10
0
100908070605040302010 0
SPEED PARAMETERS
10% Creep Speed
80% Max Speed
THROTTLE INPUT (percent)
CONTROLLER OUTPUT (PWM percent)
100908070605040302010 0
SPEED PARAMETERS
10% Creep Speed
80% Max Speed
THROTTLE
PARAMETERS
15% Deadband
90% Throttle Max
40% Throttle Map
80% Max Speed
40% Throttle Map
(38% output at half throttle)
10% Creep Speed
15% Throttle Deadband
90% Throttle Max
HALF THROTTLE
100
90
80
70
60
50
40
30
20
10
0
3 — PROGRAMMABLE PARAMETERS: Throttle Parameters