# Emergency stop acceleration

## Parametrisation

The parameter P-AXIS-00003 defines the acceleration used in an emergency.

With certain faults, the CNC executes the emergency reaction with fault reaction class 4. In this case, the CNC changes to the stepped acceleration profile regardless of the current acceleration profile activated and decelerates specific axes at this deceleration.

The axis leaves the path contour.

## Example

Emergency acceleration

Excerpt from the axis parameter list:

getriebe[0].dynamik.a_emergency 5000