Curtis 1228 Manual, Rev. F
27
3 — PROGRAMMABLE PARAMETERS: Fault Parameters
Changing the maximum speed setting changes the throttle command
range, and hence the ramp shape. Ramp shapes with the maximum speed set
-
ting dropped from 100% to 60% are shown in Figure 12.
Fig. 12 Ramp shape
(throttle map) with maxi
-
mum speed set at 60%.
MAX. SPEED (60%)
THROTTLE POSITION (percent)
THROTTLE COMMAND (percent)
70%
60
%
50
%
40
%
30
%
20
%
RAMP SHAPE
100
90
80
70
60
50
40
30
20
10
0
100908070605040302010 0
In all cases, the ramp shape number is the throttle command at half
throttle. In Figure 12, for example, the 50% ramp shape results in a 30%
throttle command at half throttle (i.e., a command that is halfway between 0%
and 60%). The 20% ramp shape results in a 12% command at half throttle
(20% of the range from 0% to 60%).
HIGH PEDAL DIS
The primary function of the high pedal disable (HPD) feature is to prevent
the vehicle from moving if the controller is turned on with the throttle already
applied. HPD also serves as the interlock to prevent the vehicle from starting
up with the push or inhibit feature active, and to prevent driving if Inhibit is
activated during operation.
When the HPD parameter is programmed On, HPD is active and control
-
ler output is inhibited (1) if a throttle input greater than the throttle deadband
exists when the controller is turned on, (2) if the push switch is On when the
controller is turned on, (3) after the vehicle reaches a stop if the push switch is
activated while the vehicle is being driven, or (4) if the inhibit switch is activated
while the vehicle is being driven. If HPD is programmed Off, this protection
feature is disabled. Note: All DME scooter applications must have the HPD
feature programmed On to satisfy the industry’s safety requirements.
Fault Parameters
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