Which products are affected?
Positioner Software Package V3.1
LenzeMotionControlV3.lib
What happens?
After deactivating the previously used velocity override function via g_bExecuteVelOverride:=FALSE, a very large following error is generated. The drive tries to catch up with this following error by using the maximum torque or the following error monitoring responds.
When does the problem occur?
The behaviour can be observed if a previously active velocity override function with 0 % is deactivated via g_bExecuteVelOverride = FALSE. In the special case n = 0rpm, the internal position integrators are set. This leads to a very large following error.
Possible diagnostics?
If this behaviour occurs, a sudden change in the following error characteristic can be proved by using an oscilloscope. If the override function is used with values slightly larger than 0 %, the error does not occur.
Short-term measures/recommendations?
Deactivate the override function after termination of the profile only.
Evaluation
The deceleration of a drive to zero is an unintended use of the override function and should therefore not be used in that way. If the following error monitoring is set correctly, the occurrence of this behaviour cannot damage the machine.
