Device for safety instrumented control of a machine, which is provided with an electric drive, which is operated by a person and which has at least one metal component capable of causing injury in the event of a mechanical interaction with the person, with a left-hand and a right-hand conductive glove (10, 12) which conduct electric current and which are to be worn by the person such that the gloves make contact with the skin of the person's hands, with a left-hand and a right-hand insulating glove (10, 12) which comprise an electrical insulator and which are to be worn by the person over the conductive gloves, with a control device which controls the electrical drive of the machine, with a left-hand electrically conducting connection between the left-hand conductive glove and the control device, with a right-hand electrically conductive connection between the right-hand conductive glove and the control device, wherein the control device has an operating condition in which the control device supplies the electric drive with power and monitors a voltage between the right-hand conductive glove and the left-hand conductive glove, and switches off the electric drive or reverses the direction of movement of the electric drive if the voltage between the left-hand and/ or the right-hand conductive glove (10, 12) changes, characterized in that the control device is provided with a resistance test device which detects the resistance between the left-hand conductive glove conductively connected to the control device and the right-hand conductive glove conductively connected to the control device and compares it with a predetermined minimum resistance and a predetermined maximum resistance, wherein the minimum resistance is greater than 0 Ω and less than the body resistance of a person, and which prevents the activation of the operating condition or if the operating condition is already present terminates the operating condition if the resistance detected is less than the minimum resistance or greater than the maximum resistance, that the control device is provided with a voltage source that supplies the left-hand and right-hand electrically conductive gloves (10, 12) with direct current, and in that the control device is designed to cycle the direct current to alternately supply the left-hand and right-hand conductive gloves (10, 12) with power. with a left-hand and a right-hand conductive glove (10, 12) which conduct electric current and which are to be worn by the person such that the gloves make contact with the skin of the person's hands, with a left-hand and a right-hand insulating glove (10, 12) which comprise an electrical insulator and which are to be worn by the person over the conductive gloves, with a control device which controls the electrical drive of the machine, with a left-hand electrically conducting connection between the left-hand conductive glove and the control device, with a right-hand electrically conductive connection between the right-hand conductive glove and the control device, wherein the control device has an operating condition in which the control device supplies the electric drive with power and monitors a voltage between the right-hand conductive glove and the left-hand conductive glove, and switches off the electric drive or reverses the direction of movement of the electric drive if the voltage between the left-hand and/ or the right-hand conductive glove (10, 12) changes, characterized in that the control device is provided with a resistance test device which detects the resistance between the left-hand conductive glove conductively connected to the control device and the right-hand conductive glove conductively connected to the control device and compares it with a predetermined minimum resistance and a predetermined maximum resistance, wherein the minimum resistance is greater than 0 Ω and less than the body resistance of a person, and which prevents the activation of the operating condition or if the operating condition is already present terminates the operating condition if the resistance detected is less than the minimum resistance or greater than the maximum resistance, that the control device is provided with a voltage source that supplies the left-hand and right-hand electrically conductive gloves (10, 12) with direct current, and in that the control device is designed to cycle the direct current to alternately supply the left-hand and right-hand conductive gloves (10, 12) with power.