Detailed Description
2.3 Configurable gear adaptation
Spindles (S1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
2-47
• The spindle will cease to be synchronized if an indirect measuring system (motor
encoder) is used.
If the machine data is set to:
MD31050 $MA_ENC_IS_DIRECT = 0,
NC/PLC IS:
DB31, ... DBX60.4/5 = 0 (homed/synchronized)
is automatically deleted.
The zero mark is synchronized the next time it is crossed.
End of oscillation mode
On termination of oscillation mode, the spindle returns to open-loop control mode and
automatically changes to the mode defined by SPCON or SPCOF.
All gear-specific limit values (min./max. speed, etc.) correspond to the set values of the
actual gear step.
Functionality
Machine tools of conventional design require a gear step change of the spindle in oscillation
mode.
If the machine data configuration is:
MD35010 $MA_GEAR_STEP_CHANGE_ENABLE = 1
the following sequence is implemented:
• Deceleration of the spindle.
The braking action corresponds to an M5 movement.
• Output of VDI interface signals:
DB31, ... DBX84.6 (oscillation mode)
DB31, ... DBX82.3 (change gear)
DB31, ... DBX82.0-82.2 (set gear step A to C).
If position control has been enabled, it is disabled:
DB31, ... DBX61.5 = 0.
• The load gearbox can now "disengage".
• NC/PLC IS:
DB31, ... DBX18.5 (oscillation enable)
can be set by the PLC.
The spindle motor then performs an oscillation motion with preset values.
The oscillation motion is designed to facilitate and accelerate the reengaging of the gear
wheels.
• Writing of NC/PLC IS:
DB31, ... DBX16.0-16.2 (actual gear step A to C)
by the PLC.
• Once the PLC has sent:
DB31, ... DBX16.3 (gear changed)
to the NCK, the last movement to be active is continued, if available.
For indirect encoders (motor encoders), the homing status is cleared:
DB31, ... DBX60.4/5 = 0.
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