22
Curtis 1228 Manual, Rev. F
IR COMP COEFF
IR compensation is a method by which the controller maintains a constant ve-
hicle speed despite changes in motor loading. The IR compensation parameter
adjusts how aggressively the controller tries to maintain constant speed under
changing load conditions. The parameter is scaled 0–100%, and defines the
percentage of compensation applied.
SPD SCALER
The speed scaler parameter sets the maximum voltage that can be applied to
the motor. It can be used to eliminate variations in maximum speed that would
otherwise result when driving with a fully charged battery vs. a partially dis-
charged battery. If the speed scaler is set at 23 volts, for example, the maximum
vehicle speed will be the same whether the actual battery voltage is 28 volts or
23 volts or any value in between.
The speed scaler parameter is programmable between 20.0 V and 28.0 V.
THRTL TYPE
The controller can be programmed to accept single-ended, wigwag, or inverted
wigwag signals from a 5k
Ω, 3-wire pot or from a 5V throttle.
The throttle input signal type options—Types “0” through “5” in the
Throttle Type programming menu—are listed in Table 1.
Table 1 PROGRAMMABLE THROTTLE INPUT SIGNAL TYPES
APPLICABILITY
THROTTLE 5kΩ 5V
TYPE 3-wire Pot Throttle DESCRIPTION
0 ✓ ✓ * wigwag pot or voltage throttle
1 ✓ ✓ * inverted wigwag pot or voltage throttle
2 ✓ single-ended pot; maximum speed = 5kΩ
3 ✓ inverted single-ended pot; maximum speed = 0
4 ✓ single-ended voltage throttle;
maximum speed = 5V
5 ✓ inverted single-ended voltage throttle;
maximum speed = 0
* Requires resistor; see Figure 6, page 11.
3 — PROGRAMMABLE PARAMETERS: Throttle Parameters
Throttle Parameters
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