Programming
10.3 Axis movements
Surface grinding
Programming and Operating Manual, 11/2012, 6FC5398-5CP10-3BA0
245
10.3.12 Percentage acceleration override: ACC
Functionality
Certain program sections can require the axis and spindle acceleration set via the machine
data to be changed using the program. This programmable acceleration is a percentage
acceleration override.
For each axis (e.g. X) or spindle (S), a percentage value >0% and ≤200% can be
programmed. The axis interpolation is then carried out with this proportional acceleration.
The reference value (100%) is the valid machine data value for the acceleration (depending
on whether it is the axis or spindle; for the spindle it depends further on the gear stage and
whether it is in positioning mode or speed mode).
Programming
ACC[
axis name
] = percentage ; for axis
ACC[S] = percentage ; for spindle
Programming example
N10 ACC[X]=80 ; 80% acceleration for the x axis
N20 ACC[S]=50 ; 50% acceleration for the spindle
...
N100 ACC[X]=100 ; Deactivate the override for the X-axis
Effectivity
The limitation is effective in all interpolation types of the AUTOMATIC and MDA modes. The
limitation is not active in JOG mode and during reference point approach.
The value assignment ACC[...] = 100 deactivates the override; likewise, as do RESET and
End of program.
The programmed override value is also active with dry run feedrate.
CAUTION
A value greater than 100% may only be programmed if this load is permissible for the
machine mechanics and the drives have the corresponding reserves. Failure to adhere to
the limits can lead to damage to the mechanical parts and/or error messages.
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