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Yaskawa boosts efficiency of industrial robots Energy savings of up to 25 percent

The energy requirements of a robot are determined not only by the design of the manipulator, but also the application, controller and system layout. The more varied the individual parameters, the greater the scope for potential savings. Even taken on their own, intelligent shutdown concepts during breaks in operation — for example at weekends — can save up to 15 percent of energy by shutting down the systems in an orderly manner.

The robot design offers even greater potential savings: Yaskawa has observed that in a typical body production line 40 percent of all robots could be selected at least one size smaller. This would reduce energy requirements by 8 percent. Solutions from Yaskawa enable greater robot density and faster cycle times per cell with smaller-dimensioned robots. This effect is increased even more by using lightweight robots. Selecting smaller robots thus means not only reduced energy requirements, but also faster cycle times: replacing an over-dimensioned 250 kg manipulator with an 80 kg alternative designed for the specific application results in a 20 percent improvement in cycle times and energy savings of up to 25 percent.

As demonstrated by an example cell presented by Yaskawa at Automatica, utilization of excess brake energy can play a significant role in increasing energy efficiency. Intelligent switching of the drives to generator mode allows the brake energy to be recovered or stored. It can be fed back into the mains network, for example. One precondition is the perfect interaction of all components. This is assured by the extensive range of robotic and drive technology produced by Yaskawa.

Since May 2012 Yaskawa has also been a partner in the cross-industry sustainability initiative Blue Competence by VDMA.


Marion Reisert
Marketing / PR / Communications
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