Wesley BC-620-4CA - Manual (Page 87)

Curtis 1234/36/38 Manual,
OS
11 83
2 3 J U LY 2 0 0 8 D R A F T
f. In the Speed Mode » Response menu, adjust the remaining three brake rate
parameters as necessary while reversing the throttle input (i.e., full throttle
forward to low throttle reverse, full throttle forward to full throttle reverse,
full throttle reverse to low throttle forward, etc.).
If a brake input is present in the application (Brake Pedal Enable = On)
continue adjusting these three brake rates by applying different amounts of
brake throttle (i.e., full throttle forward, then apply full brake or full throttle
forward, then apply low brake, etc.). For AC pump applications these pa-
rameters have no effect on performance since the AC pump will not run in
reverse nor with a brake input.
g. The parameters in the Speed Mode » Response » Fine Tuning menu typically
do not need to be changed as the default values work well in most applica-
tions.
AC pump motor applications, which in step “a” had the Pump Enable parameter
set to On, may also be controlling hydraulic valves (load hold valve, proportional
valve). The Proportional Driver parameters (page 50) and some VCL will typi-
cally be used to set up the control of these valve driver outputs. Consult with
your Curtis customer support engineer regarding hydraulic valve control.
2 -
TORQUE MODE tuning (see pages 34–37)
a. Set Max Speed to the maximum speed you want to limit the motor to.
b. Kp, Ki, and Kd typically do not need to be changed as the default values will
work well in most applications. These parameters control how tightly the
controller limits the speed of the motor to the programmed Max Speed.
c. Set Typical Max Speed (page 53) to the expected maximum speed of the motor.
d. Adjust the parameters shown in Figure 8 (page 37) to set up the throttle
mapping:
• Regen Current Limit (Current Limits menu, page 39)
• Drive Current Limit (Current Limits menu, page 39)
• Restraint Forward, Restraint Back (Restraint menu, page 38)
• Neutral Braking (Torque Mode » Response menu, page 35)
• Neutral Taper Speed (Torque Mode » Response menu, page 35)
• Creep Torque (Torque Mode » Response » Fine Tuning menu, page 36) .
e. In the Torque Mode » Response menu, adjust the four accel, decel, and release
rate parameters as necessary while moving the throttle to different positions
(i.e., neutral to full throttle, half throttle to full throttle, full throttle to half
throttle, full throttle to neutral, neutral to low throttle, etc.).
f. The other parameters in the Torque Mode » Response » Fine Tuning menu
typically may need to be changed for some applications. Read the parameter
descriptions and adjust as necessary.
6 — TUNING GUIDE
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