Siemens SINUMERIK 840D sl Function Manual page 1254
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Also See for SINUMERIK 840D sl:
- Function manual (2184 pages) ,
- Programming manual (1334 pages) ,
- Commissioning manual (1102 pages)
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S1: Spindles
16.4 Configurable gear adaptation
● If NC/PLC IS:
DB31, ... DBX18.5 (oscillation speed)
is reset, oscillation mode stops.
However, the spindle remains in "oscillation mode".
● The acceleration is defined in the following machine data:
MD35410 $MA_SPIND_OSCILL_ACCEL
● 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 (referenced/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 stage.
Functionality
Machine tools of conventional design require a gear stage 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 stage 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)
The spindle motor then performs an oscillation motion with preset values.
The oscillation motion is designed to facilitate and accelerate the re-engaging of the gear
wheels.
1254
can be set by the PLC.
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions
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