The E°Darc SCM safety controller module makes it easier for mechanical engineers to implement modern drive-side safety concepts. For this purpose, they can rely on a wide range of certified security functions, e. g. STO (Safe Torque Off), SLP (Safely-Limited Position) or SLS (Safely-Limited Speed) (see graph).
All Eckelmann components are closely integrated to work together: the application on the non-safe PLC controls the drive controllers via field buses such as CAN or sercos. Safety features requested by a safe sensor or operating mode selector are handled by the safe control of the E°Darc SCM or an additional E°SLC safety module which, via bus coupler, transmits the change to a different operating mode to the non-safe PLC, and simultaneously activates safety functions in the E°Darc safety controller module. The E°Darc SCM monitors the parameterised limits of the safety features active and performs the parameterised safety responses, if necessary.
The wide variety of safety features make for a differentiated system responsiveness. While, in the event of an error, conventional solutions only offer STO, i. e. uncontrolled coasting to a stop, the E°Darc SCM also allows for operating the system at a reduced speed and, thus, for the continued production or the controlled shutdown of an axis. This is important for all axes that need to support load torque at standstill, such as hanging axes.