ABB's S4CPlus Controller with QuickMove™ & TrueMove™ technology provides excellent motion control. QuickMove™ ensures maximum acceleration and speed, while TrueMove™ offers high precision path following capability, independent of robot speed. The S4C Plus Complies with major safety and electrical regulations, and is adaptable for use in harsh environments. The S4C Plus is being phased out of production & is being replaced by the IRC 5.