Abstract: A device for monitoring a shaft coupling coupling a first shaft to a second shaft includes an optical unit having a receiving element to receive electromagnetic radiation. A modifying unit modifies a radiant energy impinging on the receiving element as the first shaft runs asynchronously with respect to the second shaft. The modifying unit includes a holographic optical component designed for arrangement on and/or within the first shaft, and a diaphragm designed for arrangement on and/or within the second shaft and including radially arranged slots and radially arranged filled regions in an at least substantially regular sequence. The diaphragm includes an at least substantially centrally arranged opening. The holographic optical component is designed for illumination or irradiation with the electromagnetic radiation and generates a pattern having radially arranged areas with a first radiant energy and radially arranged areas with a second radiant energy in an at least substantially regular sequence.

Abstract: A device for monitoring a shaft coupling coupling a first shaft to a second shaft includes an optical unit having a receiving element to receive electromagnetic radiation. A modifying unit modifies a radiant energy impinging on the receiving element as the first shaft runs asynchronously with respect to the second shaft. The modifying unit includes a holographic optical component designed for arrangement on and/or within the first shaft, and a diaphragm designed for arrangement on and/or within the second shaft and including radially arranged slots and radially arranged filled regions in an at least substantially regular sequence. The diaphragm includes an at least substantially centrally arranged opening. The holographic optical component is designed for illumination or irradiation with the electromagnetic radiation and generates a pattern having radially arranged areas with a first radiant energy and radially arranged areas with a second radiant energy in an at least substantially regular sequence.

Abstract: In a method for controlling a dynamoelectric machine, in particular a dynamoelectric rotary machine, an ambient air pressure of the dynamoelectric machine is ascertained by determining an altitude and/or by measuring the ambient air pressure, and a power output of the dynamoelectric machine is adapted as a function of the ambient air pressure to counteract an air pressure which drops as installation altitude rises and an associated deterioration of cooling properties, and to ensure a sufficient cooling of the machine.

Abstract: A device for monitoring a shaft coupling coupling a first shaft to a second shaft includes an optical unit comprising a receiving element which is designed to receive an electromagnetic radiation in a form of light, and an error notification element designed for arrangement on and/or within the first shaft and on and/or within the second shaft. The error notification element is designed to notify when the first shaft runs asynchronously with respect to the second shaft.

Abstract: In one aspect a device to simplify, and to reduce the costs of, the error-protected detection of the measured values in the control unit, without reducing the error protection of the system is provided. The device includes a pick-up device for detecting measuring signals. Independently operating evaluation devices are provided for the redundant determination of measured values from the measuring signals of the pick-up device. The data is transmitted to the control unit by means of error-protected transmission devices. A first evaluation device is used to determine a measured value, and a second evaluation device is used to determine a less precise, coarse comparison value. The device is also used to establish the accuracy of the measured value by comparing the value with the comparison value.

Abstract: A low-wear sensor with little structural outlay to detect a combined linear and rotational movement, such as in a print roller (10). In one embodiment, a PLCD (Permanent Magnetic Linear contactless Displacement) sensor includes a magnet (5) which can be rotated about a longitudinally extended coil (2). A ring magnet is particularly suitable for this. The linear position of the ring magnet can be determined independently of its rotational movement (7) by means of the voltage induced in coils (3,4). Detection of the linear position is contactless and thus wear-free.

Abstract: A low-wear sensor with little structural outlay is proposed to detect a combined linear and rotational movement. A PLCD sensor is provided for this purpose, the magnet (5) of which can be rotated about the longitudinally extended coil (2). A ring magnet is particularly suitable for this. The linear position of the ring magnet can be determined independently of its rotational movement (7) by means of the voltage induced in the coils (3, 4). Detection of the linear position is contactless and thus wear-free.

Abstract: A rotary motion detector includes an electrically conducting induction element formed essentially as a hollow cylinder and rotatable about a rotation axis. An excitation assembly applies an inhomogeneous magnetic field and induces an eddy current in the induction element, when the induction element rotates about the rotation axis. A sensor assembly detects a measurement signal that depends on the eddy current. The excitation assembly and the sensor assembly are both arranged radially inside the induction element.

Abstract: A rotary motion detector includes an electrically conducting induction element formed essentially as a hollow cylinder and rotatable about a rotation axis. An excitation assembly applies an inhomogeneous magnetic field and induces an eddy current in the induction element, when the induction element rotates about the rotation axis. A sensor assembly detects a measurement signal that depends on the eddy current. The excitation assembly and the sensor assembly are both arranged radially inside the induction element.