Siemens SINUMERIK 828D

S1: Spindles
16.2 Operating modes
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
1267
16.2.5.2 Positioning from rotation
Initial situation
The spindle can be in speed control mode or in position control mode when positioning starts (SPOS, M19 or
SPOSA command in the program).
One must distinguish between the following cases:
Procedure
Figure 16-1 Positioning from rotation
Case 1: Spindle in speed control mode, encoder limit frequency exceeded
Case 2: Spindle in speed control mode, encoder limit frequency not exceeded
Case 3: Spindle in position control mode
Case 4: Spindle speed ‹ Position-control activation speed
Note
The speed arising from the configuration of the encoder limit frequency for the
resynchronization of the encoder (MD36302$MA_ENC_FREQ_LOW) must be greater than
the position-control activation speed (MD35300 $MA_SPIND_POSCTRL_VELO).
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