S1: Spindles
16.4 Configurable gear adaptation
Basic Functions
1290 Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Requirement for a gear stage change
In principle, the gear stage change is only performed if the requested gear stage is not the same as the active
gear stage.
Parameter set selection during gear stage change
The servo parameter set is also changed over with the gear stage if:
MD35590 $MA_PARAMSET_CHANGE_ENABLE = 0 or 1
For further information. please refer to Chapter "Parameter set selection during gear step change [Page 1304]".
Bit Value Meaning
0 0 The spindle motor is attached to the spindle directly (1:1) or with a non-variable
transmission ratio (basic setting).
The machine data of the first gear stage are effective.
1 Spindle motor with up to 5 gear stages.
The gear stage change takes place:
• in oscillation mode
• at indefinite change position
1 0 Meaning as in Bit 0 = 0.
1 Meaning as in Bit 0 = 1, however, the gear stage change takes place at the configured
spindle position.
The change position is set in machine data:
MD35012 $MA_GEAR_STEP_CHANGE_POSITION
The position is approached in the current gear stage before the gear stage change.
If Bit 1 is set, the Bit 0 is ignored!
3 1 The gear stage change dialog between NCK and PLC is simulated.
5 1 The second gear stage data set is used while tapping with G331/G332 (see the
following paragraph "Second gear stage data set"). The bit must be set for the master
spindle used during the tapping.
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