Programming
10.3 Axis movements
Cylindrical grinding
270
Programming and Operating Manual, 07/2009, 6FC5398-4CP10-2BA0
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 of the axis
or spindle. For the spindle, the reference value is also dependent upon:
●
the gear stage
●
the selected mode (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
Activation
The limitation is active in all types of interpolation of the AUTOMATIC and MDA modes but
not in JOG mode and for 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.