MC_AccelerationProfile¶
This Function Block commands a time-acceleration locked motion profile
Note
- MC_TPROFILE is an ABB specific datatype.
- Alternatively to this Function Block, the CAM Function Block coupled to a virtual master can be used.
Example of an acceleration profile
A profile is made from a number of sequential “A to B” positioning points. It is simple to visualize, but requires a lot of sequences for a smooth profile. These requirements are often beyond the capability of low-end servos. Alternatively, by using a modest amount of constant acceleration segments it is possible to define a well-matching motion profile. With this method the capability range of low-end servos can be extended. It is possible to make matching to either:
1.) Position versus time profile
2.) Master versus slave axis
Advantages:
- Compact description of a profile.
- Smooth profile properties by nature.
- Low processor power requirements.
Disadvantages:
- Higher programming abstraction level with existing tools.
See the following chapter to check if this Function Block is supported by the used axis implementation: Overview
For this Function Block there is a visualization in the Library MC_Blocks_AC500_V11.
See the following chapter for a list of available data types: Overview