If the production requires an operator intervention, In most cases he will be entering an area which is protected by one or more fence doors and or Light curtains. When entering the zone, the operating mode changes and the machine comes to a safe stop. This means that drives act with the pre-set parameters to come to a full stop. Drives with “Safe Torque Off” will switch off the power circuit immediately after finalizing the controlled stop. Drives with “Safe motion” will keep the axis even fixed at a certain position after stopping. These safety options makes it impossible that the machine will start by a fault.