A robot system comprising: a robot for guiding an application part, wherein the robot comprises: (a) a robot arm comprising: a base; a region which is proximal to the base; a region which is distal to the base; and a mounting device for mounting the application part, in particular in a releasable manner, wherein the mounting device is arranged in the distal region; (b) an electrical grounding; and (c) a cable for connection to the application part and a control device, in particular in a releasable manner, comprising: at least one signal line and / or at least one power supply line; a protective conductor; a distal connection means for electrically connecting the application part to the cable, in particular in a releasable manner; and a proximal connection means for electrically connecting the control device to the cable, in particular in a releasable manner; and an adapter, characterised in that the adapter comprises an electrical line for the electrical connection of the protective conductor of the cable to the electrical grounding of the robot, in particular in a releasable manner. a robot for guiding an application part, wherein the robot comprises: (a) a robot arm comprising: a base; a region which is proximal to the base; a region which is distal to the base; and a mounting device for mounting the application part, in particular in a releasable manner, wherein the mounting device is arranged in the distal region; (b) an electrical grounding; and (c) a cable for connection to the application part and a control device, in particular in a releasable manner, comprising: at least one signal line and / or at least one power supply line; a protective conductor; a distal connection means for electrically connecting the application part to the cable, in particular in a releasable manner; and a proximal connection means for electrically connecting the control device to the cable, in particular in a releasable manner; and (a) a robot arm comprising: a base; a region which is proximal to the base; a region which is distal to the base; and a mounting device for mounting the application part, in particular in a releasable manner, wherein the mounting device is arranged in the distal region; a base; a region which is proximal to the base; a region which is distal to the base; and a mounting device for mounting the application part, in particular in a releasable manner, wherein the mounting device is arranged in the distal region; (b) an electrical grounding; and (c) a cable for connection to the application part and a control device, in particular in a releasable manner, comprising: at least one signal line and / or at least one power supply line; a protective conductor; a distal connection means for electrically connecting the application part to the cable, in particular in a releasable manner; and a proximal connection means for electrically connecting the control device to the cable, in particular in a releasable manner; and at least one signal line and / or at least one power supply line; a protective conductor; a distal connection means for electrically connecting the application part to the cable, in particular in a releasable manner; and a proximal connection means for electrically connecting the control device to the cable, in particular in a releasable manner; and an adapter, characterised in that the adapter comprises an electrical line for the electrical connection of the protective conductor of the cable to the electrical grounding of the robot, in particular in a releasable manner.