Curtis 1243
GEN
2 Manual
34
3 — PROGRAMMABLE PARAMETERS:
Throttle Parameters
THROTTLE MAX
The
throttle max
parameter sets the wiper voltage or resistance required to
produce 100% controller output. Decreasing the throttle max setting reduces
the wiper voltage or resistance and therefore the full stroke necessary to produce
full controller output. This feature allows reduced-range throttle assemblies to
be accommodated.
The examples in Figure 16 illustrate the effect of three different throttle
max settings (100%, 90%, 60%) on the full-stroke wiper voltage or resistance
required to attain 100% controller output for the four throttle types.
The programmer displays the throttle max parameter as a percentage of
the active throttle range. The active throttle range is not affected by the throttle
deadband setting. The throttle max parameter can be adjusted from 100% to
60%; the default setting is 90%. The nominal throttle wiper range depends of
the throttle type selected. See Table 1 (page 9) for the characteristics of your
selected throttle type.
The throttle max parameter is tuned as part of the vehicle performance
adjustment process (Section 5).
Fig. 16
Effect of adjusting
the Throttle Max parameter
(throttle types 1 and 2).
Throttle Type 2 (0–5V, single-ended)
Throttle Type 1 (5k
Ω
–0)
0
5V
2.1V
100%
Throttle Max
40%
Deadband
0.7V
4.5V
0.7V
3.1V
2.1V
4.5V
90%
Throttle Max
40%
Deadband
90%
Throttle Max
10%
Deadband
60%
Throttle Max
10%
Deadband
0
5V
2.1V
(3.0k
Ω
)
0.2V
(0
Ω
)
100%
Throttle Max
40%
Deadband
3.0V
(4.5k
Ω
)
1.4V
(2.0k
Ω
)
0.5V
(450
Ω
)
90%
Throttle Max
40%
Deadband
90%
Throttle Max
10%
Deadband
60%
Throttle Max
10%
Deadband
0.5V
(450
Ω
)
2.1V
(3.0k
Ω
)
3.0V
(4.5k
Ω
)
3.3V (5k
Ω
)
0.2V
