In this video we demonstrate and explain the functions of the TÜV certified SMU (Safety Motion Unit) for functional safety. The four different functions (STO, SS1, SS2 and SLS) can be defined directly in the XENAX® WebMotion. The eight digital inputs and outputs can be used to configure the safety functions. It is a redundant system where two inputs are used for each function. The inputs are low active so any damage to cables or the like can be detected.
STO - Safe torque Off
SS1 - Safe Stop 1, deceleration of the axis followed by shutdown
SS2 - Safe Stop 2, braking the axis and holding the position
SLS - Safely Limited Speed - Observation of a save speed, if speed is exeeded in SS2