Autonics AiC Series, User Manual

Page: 73 / 88

11 Driver Function
© Copyright Reserved Autonics Co., Ltd. 73
11.1.2 Speed curve
Drive pulse output of each axis operates by CW direction, CCW direction fixed pulse drive
instruction or continuous drive instruction. However, it can operates speed curve of fixed speed,
trapezoidal acceleration/deceleration, S-curve acceleration/deceleration by operation mode
setting or parameter.
11.1.2.1 Constant Speed Drive
Constant speed drive outputs pulse at a constant speed.
When the start drive speed and the max. drive speed are set as same value or the acceleration
or the deceleration time is set as 0, it operates constant speed drive without acceleration/
deceleration.
This max. drive speed settings should be higher than or same as start drive speed.
11.1.2.2 Symmetric Trapezoidal Acceleration/Deceleration Drive

Trapezoidal acceleration/deceleration drive accelerates from initial speed to drive speed
trapezoidally with an inclination of the designated acceleration.

Set acceleration/deceleration time as msec at
“Acceleration Time 1 to 5”, “Deceleration
Time 1 to 5
” parameter.

It counts the pulses consumed while accelerating to a specified drive speed, and starts
decelerating when the remaining output pulse becomes less than accelerating pulse. This
decelerating drive reduces speed to initial speed with specified acceleration. In continuous
pulse drive, it decelerates to initial speed when the stop signal is activated, and stops
immediately when it reaches initial speed.

When speed override operates during constant speed drive, the set
acceleration/deceleration time is changeable.

For continuous drive or jog drive by I/O, acceleration/deceleration time is set at
“Acceleration Time 1”, “Deceleration Time 1”.

When it arrives with not the max. drive speed at the target position due to long acceleration
time and short command position, acceleration time may be changed.