Siemens SINUMERIK 840Di Function Manual page 252

Detailed Description
2.18 Knee-shaped acceleration characteristic curve
Fig. 2-11
1:
2:
3:
v
red
v
max
Nxy:
2.18.2 Activation
2.18.2.1 Parameterization
Key statement
The knee-shaped acceleration characteristic curve is parameterized for specific axes using
the following machine data:
MD32000 $MA_MAX_AX_VELO (maximum axis velocity)
MD35220 $MA_ACCEL_REDUCTION_SPEED_POINT
(speed for reduced acceleration)
MD35230 $MA_ACCEL_REDUCTION_FACTOR (reduced acceleration)
MD32300 $MA_MAX_AX_ACCEL (maximum axis acceleration)
MD35242 $MA_ACCEL_REDUCTION_TYPE
(type of acceleration reduction: 0 = constant, 1 = hyperbolic, 2 = linear)
2-40
Deceleration with LookAhead
Brake application point
Torque decrease zone
Maximum torque zone
: Creep velocity
: Maximum velocity
Part program block with block number Nxy
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Acceleration (B2)