Curtis 1297 - Page 107

Curtis PMC 1297 Manual
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APPENDIX A: GLOSSARY
Throttle deadband (neutral deadband)
The throttle deadband is the pot wiper voltage range that the controller
interprets as neutral. The traction throttle amd hydraulic throttle have separate
deadband parameters—see Section 3A, page 34, and Section 3B, page 51.
Throttle deceleration
The throttle deceleration rate applies when the traction throttle is first reduced
and stays in effect until the armature current goes negative, at which point the
normal deceleration rate takes over—see Section 3A, page 26.
Throttle map
The throttle map parameter modifies the controller’s PWM output relative to the
requested throttle amount. The traction throttle and hydraulic throttle have
separate throttle map parameters—see Section 3A, page 38, and Section 3B, page 54.
Throttle maximum
The throttle maximum parameter allows accommodation of throttles that do
not provide the standard full range of voltage or resistance variation at the
throttle input. The traction throttle and hydraulic throttle have separate throttle
maximum parameters—see Section 3A, page 36, and Section 3B, page 54.
Throttle types
The 1294 controller accepts a variety of throttle inputs. The most commonly
used single-ended and wigwag throttles (5kΩ–0 and 0–5kΩ pots, 3-wire pots,
0-5V throttles, and the Curtis ET-XXX electronic throttle) can be used simply
by selecting the appropriate throttle type in the programmer’s Program Menu—
see Section 3A, page 33, and Section 3B, page 51.
Tuning
The 1297 controller provides a variety of programmable parameters to assist in
tuning the vehicle to meet the customer’s needs. Section 5: Vehicle Performance
Adjustment presents information and procedures for tuning specific operating
characteristics on any vehicle.
Undertemperature
If the controller heatsink temperature falls below -25°C, the armature current
is cut back to 50%. At this reduced current, the controller will quickly heat up
without damage. When its heatsink temperature rises above -25°C, full current
will become available.
Undervoltage protection
Undervoltage protection automatically cuts back the controller output if battery
voltage is detected below the undervoltage threshold at startup, or when the