Curtis 1230 Manual, Rev. C
31
High Pedal Disable (HPD), cont’d To meet EEC requirements, HPD Type 1 or Type 2 must be selected.
Sequencing delay (above) can be used to provide a brief delay before
HPD inhibits controller output, if desired.
Two types of HPD are available, along with a “no HPD” option:
0 = no HPD
1 = Interlock-type HPD
To start the vehicle, the controller must receive both an interlock
input and a KSI input before receiving a throttle input. Controller operation
will be disabled if throttle demand is not zero at the time the interlock
switch is closed. Normal operation is regained by reducing the throttle
demand to zero.
2 = KSI-type HPD
To start the vehicle, the controller must receive a KSI input before
receiving a throttle input. Controller operation will be disabled if throttle
demand is not zero at the time KSI is enabled. In this configuration, if
throttle is applied before the interlock switch is closed but after the KSI
input has been enabled, the vehicle will accelerate to the requested speed
as soon as the interlock switch is closed.
Main Contactor Interlock Type 0–1 Two types of interlock are available for the main contactor:
0 = main contactor closes upon interlock plus throttle
The main contactor closes when the interlock switch closes and
throttle is applied. The Main Contactor Open Delay (below) starts counting
as soon as the interlock switch is opened
.
1 = main contactor closes upon interlock
The main contactor closes when the interlock switch closes,
regardless of throttle demand. The Main Contactor Open Delay (below)
starts counting as soon as the interlock switch is opened.
Main Contactor Open Delay 0–60 sec. The delay can be set to allow the main contactor to remain closed for a
period of time (the programmed delay) after the motor has stopped. The
delay is useful for preventing unnecessary cycling of the contactor and for
maintaining power to auxiliary functions that may be used for a short time
after the interlock switch has opened.
This parameter is applicable only if the controller has a main
contactor—either an internal main contactor or an external main contactor
wired to the main contactor driver (J1 Pin 22).
Main Contactor Check
OFF/ON The main contactor check, when programmed On, performs ongoing
checks to ensure that the main contactor closes properly each time it is
commanded to close, and that it has not welded closed. These checks
are not performed if the parameter is programmed Off. However, the main
contactor driver is always protected from overcurrents, short circuits, and
overheating.
SEQUENCING MENU, cont’d
ALLOWABLE
PARAMETER RANGE DESCRIPTION
3 — PROGRAMMABLE PARAMETERS: Sequencing Parameters
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