Siemens SINUMERIK 840Di Function Manual page 246

Detailed Description
2.18 Knee-shaped acceleration characteristic curve
2.17.2 Activation
2.17.2.1 Parameterization
Activation
The jerk filter is activated using the machine data:
MD32400 $MA_AX_JERK_ENABLE = TRUE
The jerk filter is active in all operating modes and with all types of interpolation.
Filter mode
The mode is selected using the machine data:
MD32402 $MA_AX_JERK_MODE =
Mode = 1
Mode = 2
Mode = 3
2.17.3 Programming
Key statement
The function is not programmable.
2.18 Knee-shaped acceleration characteristic curve
2.18
2.18.1 Detailed description
2.18.1.1 Adaptation for the motor characteristic curve
Key statement
Various types of motor, particularly stepper motors, have a torque characteristic that is highly
dependent upon speed and shows a steep decrease in torque in the upper speed range. To
ensure optimum utilization of the motor characteristic curve, it is necessary to reduce the
acceleration once a certain speed is reached.
2-34
mode
(2nd-order filter)
(Sliding mean value generation)
(Bandstop filter)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Acceleration (B2)