3.1.3.4 User defined velocity units
3.1.3.4.1 Overview
The default unit for all velocity and speed data is rpm
The default unit for all acceleration and deceleration data is rpm/s
In the case that the application requires a higher precision in velocity, the unit can be configured by the user
through object 0x60A9 SI unit velocity.
Supported values are:
1 rpm (default value)
0.1 rpm
0.01 rpm
0.001 rpm
Attention
As soon as this object is changed, all related objects and subitems also use the chosen unit and must
be scaled accordingly. Unexpected behavior and accidents can occur if the chosen unit is not taken into
account. For more information please refer to “Objects affected by changes of the velocity unit”.
3.1.3.4.2 Usage
To configure the velocity unit write the following values through SDO to object 0x60A9 SI unit velocity:
1 rpm (value 0x00B44700 or 0d11814656) - default
0.1 rpm (value 0xFFB44700 or 0d4290004736)
0.01 rpm (value 0xFEB44700 or 0d4273227520)
0.001 rpm (value 0xFDB44700 or 0d4256450304)
Since version 19.1.0 of OBLAC Drives this can be done directly in the UI using Quick Open:
After changing the unit please change all speeds /acceleration objects according to the new precision (see