The SC 22-3 safety controller from Banner reduces the costs of installation and fault-finding when connecting multiple safety devices to machine controls. The flexible controller is conceived for, amongst others, input devices such as emergency switches, light curtains and two-hand controls. It is able to replace many special-purpose safety modules. It finds application in robot welding cells, presses and other machines used in automobile construction, in metal processing, transport technology, in packing, in printing technology and in other industries. The controller also supports productions cells based on the lean manufacturing principle.