Siemens SINUMERIK 840D sl Function Manual page 248

Hide thumbs Also See for SINUMERIK 840D sl:

Table of Contents

2.11 Jerk limitation with path interpolation (SOFT) (channel-specific)

• Interval: t

Maximum jerk value (axis-specific)

The maximum jerk value can be set for each specific machine axis using the following

machine data:

MD32431 $MA_MAX_AX_JERK (maximum axis jerk)

The path parameters are calculated by the path planning component during preprocessing

so that the programmed maximum values of the machine axes that are of relevance for the

path are not exceeded.

Exceeding of maximum value

It is possible for the maximum value to be exceeded in connection with specific machining

situations (see following Section: System variable ($AC_PATHJERK)).

Maximum jerk value (channel-specific)

As well as it being possible to set the maximum jerk value for specific axes, it can also be

assigned as a channel-specific path parameter using the following machine data:

MD20600 $MC_MAX_PATH_JERK (path-related maximum jerk)

To prevent the axis and channel-specific maximum jerk values interfering with one another,

the channel-specific value must be set to a value greater then the maximum axial values.

Parameterization

The axis- and channel-specific maximum values are parameterized using the following

machine data:

MD32431 $MA_MAX_AX_JERK (maximum axis jerk)

MD20600 $MC_MAX_PATH_JERK (path-related maximum jerk)

Constant jerk with -r

velocity reduction until zero velocity is reached v = 0

; linear decrease in braking acceleration; quadratic decrease in

Basic logic functions: Acceleration (B2)

Function Manual, 11/2006, 6FC5397-0BP10-2BA0

Show Quick Links

Chapters

Table of Contents