Detailed Description
2.3 Configurable gear adaptation
Spindles (S1)
2-54 Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Note
OVRA[Sn] is valid modally. After the gear step change, a value appropriate for the
machining should be reset.
The part-program instruction FA[Sn] does not change the positioning speed during gear
step change.
Acceleration
The acceleration vales are defined independent of the gear step in machine data:
MD35200 $MA_GEAR_STEP_SPEEDCTRL_ACCEL
and
MD35210 $MA_GEAR_STEP_POSCTRL_ACCEL.
The acceleration can be changed proportionally by programming ACC[Sn].
Note
ACC[Sn] is valid modally. After the gear step change, a value appropriate for the machining
should be reset.
Speed-dependent acceleration
The "Knee-shaped acceleration characteristic" is effective as in positioning with SPOS or
FC18.
Jerk
It is currently not possible to limit the change in acceleration.
End of positioning
The transition between the end of the positioning action (DB31, ... DBX84.5)
and the start of oscillation mode (DB31, ... DBX84.6) is defined on
reaching "Exact stop fine" (DB31, ... DB60.7) and the time value entered in machine data:
MD3510 $MA_SPIND_POSIT_DELAY_TIME.
The determination of the transition condition has an effect firstly on the gear step change
time and secondly on the accuracy of the approach to the preset gear step change position.
Block change
The block change is stopped and the machining blocks are not started until the gear step
has been changed by the PLC (DB31, ... DBX16.3).
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