Curtis 1244 User Manual page 92

APPENDIX A: GLOSSARY
Status LED
A Status LED (Light Emitting Diode) is built into the controller. It is visible
through the label located on top of the controller. The Status LED flashes a
2-digit fault identification code when a fault is detected by the controller. The
fault code continues to flash until the fault has been corrected and the fault
condition has been cleared. Clearing the fault condition typically requires cy-
cling KSI for faults detected during startup, and cycling the interlock switch
for faults detected during operation. The fault codes are defined in Table 6—see
Section 8, page 74.
Taper rate
The taper rate defines how gradually the vehicle slows down at the completion
of regen braking. The taper rate is programmable—see Section 3, page 27.
Temperature compensation for current limits
Full temperature compensation provides constant current limits throughout
the normal operating range (heatsink temperatures of -25°C to +85°C). The
temperature sensor that regulates the current limits is also used to calculate the
heatsink temperature displayed by the programmer.
Throttle braking
The throttle braking feature provides automatic braking when the controller's
throttle input is reduced. The strength of braking is determined by the pro-
grammed Throttle Braking Percent parameter value. Throttle braking can be
disabled (i.e., set to 0%) if this feature is not desired. Throttle Braking Percent
is a MultiMode™ parameter—see Section 3, page 36.
The Throttle Braking Percent parameter together with the Decel Rate
and Restraint parameters allows the OEM to tune the vehicle's performance in
response to reduced throttle, especially when traveling downhill—see Section 6,
page 63.
Throttle deadband (neutral deadband)
The throttle deadband is the pot wiper voltage range that the controller inter-
prets as neutral. The throttle deadband is typically set at 10%. A higher setting
increases the neutral range, which can be useful with throttle assemblies that
do not return reliably to a well-defined neutral point. The throttle deadband
parameter is programmable—see Section 3, pages 30–31, and Section 6, page 55.
A-10
Curtis 1244 Manual,
Rev. E