
B-63783EN-1/01 7.FEEDRATE CONTROL/ACCELERATION AND DECELERATION CONTROL
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Setting jerk change time
The jerk change time is set in parameter No. 1675 as a ratio to the
acceleration change time.
Therefore, the actual jerk change time is determined as the ratio to the
acceleration change time set in parameter No. 1656.
The jerk change time must be below or equal to half the acceleration
change time, so the range of values that can be set in parameter No.
1675 is 0 to 50 (percent).
If a value out of the permissible range or 0 is set in parameter No. 1675,
look-ahead smooth bell-shaped acceleration/deceleration before
interpolation is ineffective.
Acceleration/deceleration before interpolation for linear rapid traverse
When look-ahead smooth bell-shaped acceleration/deceleration before
interpolation becomes effective, smooth bell-shaped acceleration/
deceleration also becomes effective for acceleration/deceleration
before interpolation for linear rapid traverse if bell-shaped
acceleration/deceleration is used as acceleration/deceleration before
interpolation for linear rapid traverse.
In this case, the jerk change time is determined as the ratio set in
parameter No. 1675 to the acceleration change time specified in
parameter No. 1672.
Optimum-torque acceleration/deceleration
When look-ahead smooth bell-shaped acceleration/deceleration before
interpolation becomes effective, smooth bell-shaped acceleration/
deceleration also becomes effective for optimum-torque acceleration/
deceleration if bell-shaped acceleration/deceleration is used for
optimum-torque acceleration/deceleration.
In this case, the jerk change time is determined as the ratio set in
parameter No. 1675 to the acceleration change time specified in
parameter No. 1672.