Velocity Limit (Reference)

Default: 65,535
Range: 0 to 65,535 position units per second

 

Note: This parameter is available in RMC100 CPU firmware dated 20020222 or later.

This parameter is available on analog Position and Velocity Reference axes and configures the position filter. For reference axes, the Actual Position status field reflects the actual reading from the transducer, and the Target Position reflects the filtered position, after applying the Filter Time Constant, Deadband, Velocity Limit, and Acceleration Limit parameters. This parameter limits the Target Velocity to the specified number of position units per second.

For example, suppose that the Actual Position jumps from 4100 to 4500 position units. With a high Velocity Limit (65,535) and a non-zero Filter Time Constant, the Target Position would be computed as follows:

image\ebx_1380317645.gif

By lowering the Velocity Limit parameter, the Target Position changes to the following:

image\ebx_-1496852306.gif

The Velocity Limit is ignored if the position filter is disabled through the Filter Time Constant parameter.

This and the other position filter parameters can also be changed through the Reference (W) command.

For details on reference axis filtering, see Reference Axis Filtering.

 


Copyright (c) 1997-2015 by Delta Computer Systems, Inc.