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Curtis 1244 Manual, Rev. E
3 — PROGRAMMABLE PARAMETERS: Throttle Parameters
CTRL MODE
e control mode parameter tailors the controller’s output response to throttle
commands. e two control modes allow the throttle position to define either
applied motor current or applied motor voltage.
In current control mode (Type 0), the throttle position controls the
current owing in the motor. e controller varies the percentage of
battery voltage applied to the motor to achieve the requested motor
current, thus controlling the motor torque. e operator will increase
throttle demand to accelerate and reduce the throttle demand once
the desired vehicle speed is reached. Any conditions that result in an
increase in motor loading or more motor torque will require an increase
in throttle demand to maintain the same vehicle speed. e throttle
braking percent, current ratio, and decel rate parameters are not active
in the current control mode.
In voltage control mode (Type 1), the throttle position controls the
percentage of battery voltage and current applied to the motor. e
current that is allowed to ow in the motor can be modified using the
current ratio parameter; see page 38. In voltage control mode, changes
in motor loading will result in only a small change in vehicle speed
unless the current limit is reached.
Acceleration and deceleration characteristics of the vehicle in response to throttle
changes in any of these modes will be determined by tuning parameters such
as accel rate, quick start, etc.
rottle Parameters
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