Siemens SINUMERIK 840D sl Programming Manual

3.14.2 Acceleration behavior
3.14.2.1 Acceleration mode (BRISK, BRISKA, SOFT, SOFTA, DRIVE, DRIVEA)
The following part program commands are available for programming the current acceleration
mode:
● "BRISK, BRISKA"
The single axes or the path axes traverse with maximum acceleration until the programmed
feedrate is reached (acceleration without jerk limitation).
● "SOFT, SOFTA"
The single axes or the path axes traverse with constant acceleration until the programmed
feedrate is reached (acceleration with jerk limitation).
● "DRIVE, DRIVEA"
The single axes or the path axes traverse with maximum acceleration up to a programmed
velocity limit (MD setting!). The acceleration rate is then reduced (MD setting) until the
programmed feedrate is reached.
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Figure 3-12 Path velocity curve with BRISK and SOFT
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Work preparation
3.14 Path traversing behavior
NC programming
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0 839

Siemens SINUMERIK 840D sl Specifications

General

Control Type	CNC
Number of Axes	Up to 31
Max Number of Channels	10
Interfaces	Ethernet, PROFIBUS, PROFINET, USB
Interpolation	5-axis interpolation
Operating Temperature	0°C to 45°C
Relative Humidity	Up to 95% (non-condensing)
Display	TFT color display, various sizes
Programming Languages	DIN/ISO
Safety Features	Safety Integrated
PLC	Integrated PLC S7-300
Drive Interface	SINAMICS S120
Data Storage	CF card, USB
Operating System	Windows-based