Acceleration (B2)
4.3 Jerk limitation in JOG mode
Turning, Milling, Nibbling
70 Function Manual, 11/2012, 6FC5397-1CP10-5BA0
The program code BRISK in the part program. BRISK is modal. If path axes are
programmed in a block with BRISK, the previous block is ended with exact stop. BRISK
activates the profile with abrupt acceleration changes associated with v/tlinear velocity
control.
Applicability
Path-related jerk limitation is available for interpolating path axes in operating modes AUTO
and MDA. The SOFT and BRISK acceleration profiles can be used in traverse modes exact
stop G9, G60, continuouspath modes G64, and with LookAhead. The profiles are also active
with the dry run feedrate function. With alarms that trigger a rapid stop, both acceleration
profiles are inactive.
Further information about velocity, acceleration and jerk whilst traversing in continuous path
mode and at block transitions can be found in Chapter "Continuous Path Mode, Exact Stop
and LookAhead (B1)".
Note
We recommend setting the following machine data for each axis with the same values:
MD32431 MAX_AX_JERK and MD32432 PATH_TRANS_JERK_LIM (maximum axis-specific
jerk for path movement at block transition)
4.3 Jerk limitation in JOG mode
The jerk limitation is active for axes in JOG mode during
● jogging
● handwheel jogging
● repositioning.
The jerk limitation is not active during
● reference point approach with
● alarms that initiate a rapid stop.
Jerk limitation can be determined for specific axes. The acceleration response corresponds
with the SOFT acceleration profile of path-related jerk limitation. This limitation cannot be
deselected for the axes in the relevant modes.
The axes for which jerk limitation is to be programmed can be selected with MD32420
JOG_AND_POS_JERK_ENABLE. The permissible axis-specific maximum jerk is stored in
MD32430 JOG_AND_POS_MAX_JERK.
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