Siemens SINUMERIK 840D Function Manual page 385

The following figures show the principal velocity and acceleration characteristic curves for the
respective types of characteristic curve:
● Constant torque characteristic (value = 0)
● Hyperbolic torque characteristic (value = 1)
● Linear torque characteristic (value = 2)
Characteristic parameters
The characteristic curve parameters result from the following machine data:
①
②
v
max
v
red
a
max
a
red
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA
Normal range
Reducing range
$MA_MAX_AX_VELO
$MA_ACCEL_REDUCTION_SPEED_POINT * $MA_MAX_AX_VELO
$MA_MAX_AX_ACCEL
(1 - $MA_ACCEL_REDUCTION_FACTOR) * $MA_MAX_AX_ACCEL
B2: Acceleration and jerk
12.2 Functions
385