20
Curtis 1220 Manual, Rev. C
3 — PROGRAMMABLE PARAMETERS: Current and Motor Parameters
MOTOR MENU
ALLOWABLE
PARAMETER RANGE DESCRIPTION
Gear Ratio 0 – 500.0 Denes the total gear ratio of the gearbox, including its speed
reducing mechanism.
Max Speed 0 – 8000 rpm Denes the maximum allowed steer motor rpm.
Stall Steering Speed 0 – 500 rpm
Stall PWM
25 – 80 %
Stall Timeout
0 – 2000 ms
Current Rating
0 – 25 A Set this parameter to the motor current rating provided by the motor
manufacturer.
Max Current Time 0 – 120 s Denes the maximum time the motor is allowed to run at the drive
current limit.
Cutback Gain 0 – 100 % When the motor overheats, the drive current is cut back until it reaches
the programmed Current Rating. The Cutback Gain determines how
quickly this cutback will be initiated once the programmed Max Current
Time has expired. A higher setting provides faster cutback.
CURRENT MENU
ALLOWABLE
PARAMETER RANGE DESCRIPTION
Drive Current Limit 0 – 40 A Denes the maximum current the controller will supply to the steer motor
during drive operation.
Regen Current Limit 0 – 40 A Denes the maximum current the controller will supply to the steer motor
during regen operation.
Boost On / Off Enables/disables the boost feature. When set to On, the current limit
is boosted to 50 A.
These parameters are used by the motor stalled fault check.
The Stall Steering Speed denes the speed below which
the steer motor will be considered stalled if it remains below this
speed longer than the length of time dened by the Stall Timeout
parameter while the target PWM > Stall PWM or the motor
current > 95% Drive Current Limit.
Setting of the Stall Steering Speed = 0 turns off the motor
stalled fault check.