Siemens SINUMERIK 840D sl Function Manual

Functions
2.4 Acceleration margin (channel-specific)
Basic logic functions: Acceleration (B2)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
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2.4 Acceleration margin (channel-specific)
2.4.1 Detailed Description
2.4.1.1 General Information
General information
Under normal circumstances, preprocessing makes maximum use of the parameterized
maximum values of the machine axes for the purpose of path acceleration. In order that an
acceleration margin may be set aside for overlaid movements, e.g., within the context of the
"Rapid lift away from the contour" function, path acceleration can be reduced by a
programmable factor. When, for example, a factor of 0.2 is applied, preprocessing will only
use 80% of the maximum possible path acceleration. 20% is set aside as an acceleration
margin for overlaid movements.
2.4.2 Activation
2.4.2.1 Parameterization
Parameterization
Parameters for the acceleration margin are assigned for each channel by means of machine
datum:
MD20610 $MC_ADD_MOVE_ACCEL_RESERVE
(acceleration margin for overlaid motions)
2.4.3 Programming
The function is not programmable.

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