Boundary Conditions - Siemens SINUMERIK 828D Function Manual

B2: Acceleration
4.2 Functions
Functionality
The knee-shaped characteristic curve is activated for all single-axis interpolations (positioning axis, reciprocating
axis, etc.) for specific axes using the part-program instruction.
G group: -
Effective: modal
Axis
:
• Value range: Axis identifier for channel axes
Reset response
The channel-specific default setting is activated via a reset:
MD20150 $MC_GCODE_RESET_VALUES[20]
Dependencies
If the knee-shaped acceleration characteristic curve is parameterized for a machine axis, then this becomes the
default acceleration profile for all traversing operations.
If the effective acceleration profile is changed for a specific axis using the SOFTA or BRISKA part-program
instructions, then an appropriate substitute characteristic curve is used in place of the knee-shaped acceleration
characteristic curve.
It is possible to switch back to the knee-shaped acceleration characteristic curve for a specific axis by
programming DRIVEA.
4.2.20.6

Boundary conditions

Single axis interpolation
After activating the knee-shaped acceleration characteristics in case of single-axis interpolations (positioning
axis, oscillating axis, manual motion, etc.), the machine axis is traversed exclusively in the mode DRIVEA .
It is not possible to switch over the acceleration profile via the following part program instructions:
• Abrupt acceleration changes (BRISKA)
• Acceleration with jerk limitation (SOFTA)
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Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Basic Functions