Acceleration/Deceleration
Units (acceleration)
ASCII: ACCUNIT
Default: 0 valid for all OPMODES
Select the unit for acceleration and ramp entries.
t_acc_total
This parameter determines the acceleration time to v_cmd.
t_dec_total
This parameter determines the deceleration (braking) time from v_cmd to zero.
Ramp
Determines which type of acceleration/braking ramp should be used to carry out a motion task.
Trapeze
The drive is given a constant linear acceleration/deceleration to the target speed
Sine²
To limit any jolting, the drive is accelerated/decelerated within the acceleration time along
an acceleration ramp without any discontinuities. The resulting speed characteristic corre
-
sponds to a sine² curve.
variable
The acceleration/braking ramps can be adjusted (in preparation).
Setting
The setting for the rate-of change limiting of the acceleration/braking ramps:
t_acc_total
Display of the total acceleration time
t_dec_total
Display of the total deceleration (braking) time
T1
Rate-of-change limiting of the acceleration ramp, maximum is half the acceleration time
T2
Rate-of-change limiting of the deceleration ramp, maximum is half the deceleration time
72 Setup Software
Screen page "Motion task parameters" 07/03 BECKHOFF
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