Keba Ag

Keba Gesellschaft M.b.h. & Co.

Keba Industrial Automation Gmbh

Franz Mayr

Hans-Peter Wintersteiger

Provided is an electrical drive for an industrial robot, wherein each driver circuit for the associated power switches of the first half-bridge is designed, in the case of a voltage-free or current-free state of the associated control input, to put the power switch associated with the control input into a non-conductive state, each driver circuit for the associated power switches of the second half-bridge is designed, in the case of a voltage-free or current-free state of the associated control input, to put the power switch associated with the control input into a conductive state, and a switching device is provided, which is designed, with the safety signal for the forced switch-off of the rotating-field voltage, to simultaneously switch the control inputs of the driver circuits for all power switches of the inverter into a voltage-free and/or current-free state.

Electrical drive for an industrial robot

The invention relates to a safety switching device (1) for electrically controlled machines, for use in combination with the control elements of the machine control-system itself during manual operation, in which the multi-action safety switching device (1) has several channels or several switching circuits (7, 8) and the switching circuits have at least one operating element (2, 3) which can be adjusted by an operator depending on the desired switching function. Each switching circuit (7, 8) has at least one position-sensing device (14, 15), comprising in particular contactless detection devices (16, 17) for detecting, at any time, the position (4 to 6) of the operating elements (2, 3) corresponding to the respective switching stages, which can be adjusted by the operator.

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Alberndorf, Austria

Franz Mayr