Miscellaneous Parameters - Curtis 1204M Manual

PARAMETER
HPD
Variable Plug
Boost
Contactor Protection
Main Drop Delay
Curtis 1204M/1205M/1209M/1221M Manual

MISCELLANEOUS PARAMETERS

ALLOWABLE
RANGE
On/Off By preventing the vehicle from being turned on with the throttle applied,
the HPD feature ensures the vehicle starts smoothly and safely. To start,
the controller must receive an input to KSI before receiving a throttle
input. In addition to providing routine smooth starts, HPD also protects
against accidental sudden starts if problems in the linkage (such as
bent parts or a broken return spring) give a throttle input signal to the
controller even with the throttle released.
When programmed On, the HPD feature is enabled. This is required
for full throttle protection.
When programmed Off, the HPD feature is not enabled.
On/Off Plug braking occurs when the opposite direction is selected with the
forward/reverse switch without releasing the throttle. The vehicle brakes
smoothly to a stop and then accelerates in the other direction.
When Variable Plug is programmed On, the plug braking current
varies with the amount of applied throttle. The range is from 50% to
100% of the programmed Plug Current Limit (see page 19).
When Variable Plug is programmed Off, plug braking is fixed at the
current set by the programmed Plug Current Limit.
On/Off In situations where the controller detects that the motor is about to
stall, the boost feature provides a short burst of extra torque by briefly
applying a current higher than the rated current. This can be useful for
occasionally getting the vehicle out of a pothole or over an obstacle.
Setting the Boost parameter On enables the boost feature.
If the Boost parameter is set to Off, the controller's output is limited
to its rated current.
On/Off The Contactor Protection parameter can be used to protect the tips of
the F/R contactors and main contactor from possible damage due to high
current arcs.
If the Contactor Protection parameter is programmed On, when the
controller detects the throttle is released (within the throttle deadband) it
will immediately cut off the PWM output, and because the current is cut
off quickly the contactor tips will be opened with no high current arcs.
Similarly, when a F/R contactor is open, the controller will lock the PWM
output so that when the contactor starts to close again, there is no current
on the tips.
If programmed Off, this protection is lost. However, the PWM will
decrease at the set deceleration rate instead of abruptly, resulting in a
smoother stop—which may be desired in some applications.
0 – 6 0 s The Main Drop Delay defines the time delay before the main contactor
drops out after there has been no active throttle signal.
Setting Main Drop Delay = 0 means the main contactor never drops
out; it does not mean there is no delay.
3 — PROGRAMMABLE PARAMETERS:
DESCRIPTION
Misc. Parameters
23