Siemens SINUMERIK 840D sl Commissioning Manual page 200

Optimize the drive.
11.2 Frequency response measurements
Measurement: Setpoint ramp
With measurement "Setpoint ramp", the following machine data influence the measurement
result:
● MD32000 MAX_AX_VELO (max. axis velocity)
● MD32300 MAX_AX_ACCEL (maximum axis acceleration)
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The maximum axis velocity limits the ramp gradient (velocity limitation). The drive does
not reach the programmed end position (amplitude).
The maximum axis acceleration limits the velocity change (acceleration limitation). This
leads to "rounding" on the transitions at the beginning and end of the ramp.
CAUTION
In normal cases the machine data corresponds exactly with the load capacity of the
machine kinematics and should not be changed (increased) as part of the
measurements:
• MD32000 MAX_AX_VELO (maximum axis velocity)
• MD32300 MAX_AX_ACCEL (maximum axis acceleration)
Commissioning Manual, 07/2007, 6FC5397-2AP10-3BA0
IBN CNC: NCK, PLC, drive