drive is not tripping speed deviation fault

Hello,

you can use the speed signal monitoring function to trigger a reaction by connecting the corresponding speed deviation bit to an error bit e.g. external fault.
You can find more information in function diagram 8011 of the list manual.
https://support.industry.siemens.com/cs/ww/en/view/109760366

Your parameter list shows that the speed threshold for motor blocked in p2175 is set to 0. So the motor blocked alarm is practically disabled. Please check if this was intended/considered by setting p2175=0.

Hello,

did you have a look in the mentioned list manual:

p0492 is the permissible speed difference per current controller sampling cycle. If your current controller sampling time is 250µs for example, with the setting 40 rpm a fault would occur if your acceleration or deceleration is higher than 40 rpm/250µs or "160000rpm per second".