Wesley BC-620-4CA - Manual (Page 39)

Curtis 1234/36/38 Manual,
OS
11 35
2 3 J U LY 2 0 0 8 D R A F T
3 — PROGRAMMABLE PARAMETERS: Response Parameters (TORQUE MODE)
2 – TORQUE MODE RESPONSE MENU
ALLOWABLE
PARAMETER RANGE DESCRIPTION
Accel Rate 0.1–30.0 sec. Sets the rate (in seconds) at which the motor torque increases to full
Accel_Rate_TrqM 100–30000 when full throttle is applied. Larger values represent slower response.
Accel Release Rate 0.1–2.0 sec. Determines how quickly deceleration will be initiated when the throttle
Accel_Release_Rate_TrqM 100–2000 is released while the vehicle is still accelerating. If the release rate
is fast (i.e., set to a low value), the transition is initiated abruptly.
The transition is smoother if the release rate is set to a higher value
(slower transition); however, setting the rate too high can cause the
vehicle to feel uncontrollable when the throttle is released, as it will
continue to drive for a short time.
Brake Rate 0.1–5.0 sec. Adjusts the rate (in seconds) at which braking torque builds as the
Brake_Rate_TrqM 100–5000 vehicle transitions from drive to braking when direction is reversed,
the brake pedal is applied, or neutral braking begins. Lower values
represent faster times and therefore faster braking; gentler braking is
achieved by setting the braking rate to a higher value.
Brake Release Rate 0.1–2.0 sec. Adjusts the rate (in seconds) at which braking torque releases as
Brake_Release_Rate_TrqM 100–2000 as the vehicle transitions from braking to drive.
Neutral Braking 0–100 % Neutral braking occurs progressively when the throttle is reduced
Neutral_Braking_TrqM 0–32767 toward the neutral position or when no direction is selected. The
neutral braking parameter is adjustable from 0 to 100% of the regen
current limit (see Current Limits menu, page 39).
Neutral Taper Speed 200–6000 rpm Determines the motor speed below which braking current is adjusted
Neutral_Taper_Speed_TrqM 200–6000 in both the positive and negative directions when throttle is reduced;
see Figure 8.
In the positive direction, the neutral braking current is linearly
reduced from 100% at the Neutral Taper Speed to the Creep Torque
current at zero rpm motor speed.
In the negative direction, the restraint current is linearly
increased from the Creep Torque current at zero rpm motor speed
to the restraint current at the Neutral Taper Speed.
Note: Setting the taper speed too low may cause oscillations in
the motor.