A device and a method for safety instrumented control of a machine, wherein the machine is equipped with an electric drive, is operated by a person and has at least one metal component capable of causing injury in the event of a mechanical interaction with said person. The device is equipped with a left-hand and right-hand conductive glove in the form of an under-glove, a left-hand and right-hand insulating glove in the form of an over-glove, a control device which controls the electric drive of the machine and to which the conductive gloves can be connected, and a resistance test device of the control device which compares the resistance between the left-hand and right-hand conductive gloves to a predetermined minimum resistance and a predetermined maximum resistance and prevents the drive from being switched on if the detected resistance is less than the minimum resistance or greater than the maximum resistance.

A device and a method for safety instrumented control of a machine, wherein the machine is equipped with an electric drive, is operated by a person and has at least one metal component capable of causing injury in the event of a mechanical interaction with said person. The device is equipped with a left-hand and right-hand conductive glove in the form of an under-glove, a left-hand and right-hand insulating glove in the form of an over-glove, a control device which controls the electric drive of the machine and to which the conductive gloves can be connected, and a resistance test device of the control device which compares the resistance between the left-hand and right-hand conductive gloves to a predetermined minimum resistance and a predetermined maximum resistance and prevents the drive from being switched on if the detected resistance is less than the minimum resistance or greater than the maximum resistance.

A holding device for a test sheet includes a receiving arrangement for engagement with the test sheet, a handle arrangement connected rigidly to the receiving arrangement for a user for positioning the test sheet, and a pushbutton arrangement for producing a switching signal on the basis of an actuation by the user.

A holding device for a test sheet includes a receiving arrangement for engagement with the test sheet, a handle arrangement connected rigidly to the receiving arrangement for a user for positioning the test sheet, and a pushbutton arrangement for producing a switching signal on the basis of an actuation by the user.

Production and work machines are to be able to be more safely operated. Thereto, they can be equipped with a safety device, which comprises a light curtain, a first and a second reflection device, which are each formed for reflecting light of the light curtain, and a first identification element integrated in the first reflection device as well as a second identification element integrated in the second reflection device. Moreover, the safety device comprises a first sensor device and a second sensor device for reading out the identification elements. A control device provides a start signal for the machine only if the first sensor device reads out the first identification information and the second sensor device reads out the second identification information at the same time.

Safety systems requiring intentional function activation and material testing systems including safety systems requiring intentional function activation are disclosed. An example material testing system includes: an actuator configured to control an operator-accessible component of the material testing system; an operator interface comprising a plurality of inputs; and one or more processors configured to: control the actuator based on at least one of a material testing process or an input from the operator interface; and require two or more inputs to be received within a predetermined threshold time to permit at least one operation of the actuator.

An example material testing system includes: an actuator configured to control an operator-accessible component of the material testing system; and one or more processors configured to: control the actuator based on at least one of an operator command or a material testing process; determine, based on a plurality of inputs, a state of the material testing system from a plurality of predetermined states, the predetermined states comprising one or more unrestricted states and one or more restricted states; when the state of the material testing system is one of the restricted states, enforce a restriction on the actuator; and in response to completion of an action involving controlling the actuator, automatically set the state of the material testing system to one of the restricted states.

Safety systems requiring intentional function activation and material testing systems including safety systems requiring intentional function activation are disclosed. An example material testing system includes: an actuator configured to control an operator-accessible component of the material testing system; an operator interface comprising a plurality of inputs; and one or more processors configured to: control the actuator based on at least one of a material testing process or an input from the operator interface; and require two or more inputs to be received within a predetermined threshold time to permit at least one operation of the actuator.

Safety systems requiring intentional function activation and material testing systems including safety systems requiring intentional function activation are disclosed. An example material testing system includes: an actuator configured to control an operator-accessible component of the material testing system; an operator interface comprising a plurality of inputs; and one or more processors configured to: control the actuator based on at least one of a material testing process or an input from the operator interface; and require two or more inputs to be received within a predetermined threshold time to permit at least one operation of the actuator.

A safety system for a power miter saw comprises a support member, at least one multidirectional manipulator including a workpiece holder member moveably mounted to the support member for securing a workpiece in place, and a control box. The workpiece holder member includes a presence indicator operatively connected to the control box and configured to detect the physical presence of a saw operator's hand on the at least one multidirectional manipulator when the saw operator's hand engages the presence indicator. The control box is operatively connectable to a trigger switch of the power miter saw so that an electric motor of the power miter saw is activated only when both the presence indicator of the safety system and the trigger switch of the power miter saw are engaged by both hands of an operator of the power miter saw.