Abstract: A device (1) monitors the state of a system (2), in particular safety switches for monitoring the closed state of safety equipment (2) of a machine (3). The device (1) is provided with a switch head (10) and an actuator (8), which can be brought into interaction with one another to control the device (1). The switch head (10) has an optical signaler (14) for optically signaling an operational state of the actuator (8) provided with a light-guide (28) having at least one entrance window (32) and at least one exit window (34, 36). In a state of the device (1) in which the switch bead (10) and the actuator (8) are interacting with one another, the light emitted by the signaler (14) enters, at least in part, via the at least one entrance window (32) and exits via the at least one exit window (34. 36).

Abstract: An apparatus (1) monitors a protective device (2) of a machine (4). The apparatus (1) has a switch housing (22) with a switch head (24) and an actuator (8). In the closed state of the protective device (2), the actuator interacts with the switch head (24) with that closed state being signaled. The apparatus (1) has a tumbler device (20) with a tumbler element (30) mounted movably in the apparatus (1) to lock releasably the closed state. The tumbler device (20) has a permanent magnet (34). The magnetic force fixes the tumbler element (30) in a first position when the power supply to the apparatus (1) is switched off to lock the closed state of the protective device (2), in a second position with the tumbler device (20) not locking the closed state.

Abstract: An apparatus (1) for monitoring the state of a protective device (2) of a machine (4) in particular is a safety switch for monitoring the closed state of a protective door or the like. The apparatus (1) has a switch housing (22) with a switch head (24) and an actuator (8). In the closed state of the protective device (2), the actuator interacts with the switch head (24) and, as a result, the closed state of the protective device (2) can be signaled. The apparatus (1) has a tumbler device (20) with a tumbler element (30) mounted movably in the apparatus (1) and by which the closed state of the protective device (2) can be locked releasably. The tumbler device (20) has at least one permanent magnet (34).

Abstract: A device (1) maintains a locked and closed state of a space separating device (2) in a releasable manner, in particular a protective device of a machine (4). The device has a first part (6) with an opening and a second part (8). The parts are movable relative to one another. The opening is at least partially closable. The device (1) includes a latch (18) for locking the closed state of the space-separating device (2), a holding element (30) for keeping the latch (18) in the latched position, and a release element (36) for releasing the catch of the latch (18). The catch of the latch (18) may be lifted by a rotational movement of the release element (36) relative to the latch (18).

Abstract: A locking system (1) for a safety switch includes a read head (2) and an actuator (3), each of which is provided with first or second componentry (10, 14) encompassing electrical and/or electronic components that interact with each other in an electrically contactless manner, thereby controlling the safety switch. The locking system actuator (3) can be locked to the read head (2) by a switchable electromagnet (7) which interacts with a counterelement (12). The locking action is controlled by a sensor element (31, 32, 33, 34), the output signal of which depends on the magnetic field generated by the electromagnet (7).

Abstract: A locking system is for a safety switch. The switch has a reading head (2) and an actuator (3) with first and second modules (10, 14) containing electric and/or electronic components. The components can be caused to interact electrically in a contactless manner to control the safety switch. The actuator (3) can be locked on the reading head (2) by a controllable electromagnet (7), which cooperates with a counterelement (12). The counter-element (12) and/or the electromagnet (7) is/are connected in a fixed manner to a corresponding base element (13), which is fixed to the actuator (3) or reading head (2), but can be pivoted in relation to the base element. The first and/or second module (10, 14) is/are integrated into the respective counter-element (12).

Abstract: The invention is related to a locking system (1) for a safety switch, comprising a read head (2) and an actuator (3), each of which is provided with a first or second componentry (10, 14) encompassing electrical and/or electronic components that interact with each other in an electrically contactless manner, thereby controlling the safety switch. The inventive locking system is characterized by the fact that the actuator (3) can be locked to the read head (2) by means of a switchable electromagnet (7) which interacts with a counterelement (12) and that the locking action is controlled by means of a sensor element (31, 32, 33, 34), the output signal of which depends on the magnetic field generated by the electromagnet (7).