Siemens SINUMERIK 840Di Function Manual page 375

Detailed Description
2.1 Velocities, traversing ranges, accuracies
2.1
2.1.1 Velocities
Maximum path and axis velocities and spindle speed
The maximum path and axis velocities and spindle speed are influenced by the machine
design, the dynamic response of the drive and the limit frequency of the actual-value
acquisition (encoder limit frequency).
The maximum axis velocity is defined in machine data:
MD32000 $MA_MAX_AX_VELO (maximum axis velocity).
The maximum permissible spindle speed is defined via machine data:
MD35100 $MA_SPIND_VELO_LIMIT (maximum spindle speed).
For more information, see:
References:
/FB1/Description of Functions, Basic Machine; Spindles (S1)
As well as limiting using MD32000, the control limits the maximum path velocity in relation to
the situation and according to the following formula:
Velocities, Setpoint/Actual-Value Systems, Closed-Loop Control (G2)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
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2-1