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Curtis PMC 1297 Manual
36
THROTTLE MAX
The
throttle maximum
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.
Examples are shown in Figure 14 to 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
throttle range. The throttle max parameter can be adjusted from 100% to 60%;
the default setting is 90%. The nominal throttle wiper range depends on the
throttle type selected. See Table 1 (page 12) 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. 14
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
3
A
— PROGRAMMABLE TRACTION PARAMETERS: Throttle