Abstract: A method for a fill level measurement in accordance with the running time principle, which functions dependably over a long period of time, is provided, having a fill level measuring device with an ultrasonic sensor for transmitting and receiving ultrasound, wherein a repeated check of a resonance frequency of the ultrasonic sensor is performed, in the course of which the ultrasonic sensor is briefly excited to oscillate, following the excitation a signal received by the ultrasonic sensor is picked up, and the actual resonance frequency of the ultrasonic sensor is determined by means of the received signal in that the received signal is digitized and supplied to a digital signal processor, a Fourier transformation of the digitized received signal is performed in the signal processor, a maximum of the Fourier-transformed received signal is determined as a function of the frequency, a frequency at which the maximum occurs is stored as the actual resonance frequency, and during measuring operations the ultrasoni

Abstract: In an automation technology field device having a microprocessor P and a non-volatile, writable data memory NVM for storing parameter values, the data memory having a predetermined maximum number WAmax of write accesses per memory location ML, a counter C is provided for counting write accesses WA to the data memory NVM. Additionally, a memory management unit MMU is provided, which evaluates the reading of the counter C, and prevents an exceeding of the maximum number WAmax of write accesses to a memory location ML.

Abstract: A process provides for the safe operation of a printing machine. The printing machine has a first cylinder driven by a first motor, and a second cylinder driven by a second motor. The first cylinder accepts sheets of paper from the second cylinder or delivers them to the second cylinder by a gripper system. In the case of a deviation in the synchronized running between the cylinders, the gripper system is retracted at least in part far enough into the first cylinder that the possibility of a collision of the gripper system with the second cylinder is eliminated.

Abstract: A method for determining the driver torque setpoint uses inputs from a drive pedal sensor, which senses the pedal position of a drive pedal. Depending on at least one switching parameter, different modes of calculation are activated, thus enabling the pedal position to be assigned to the driver torque setpoint. After the switchover from an old mode of calculation to a new mode of calculation, the driver torque setpoint is progressively adjusted, starting from the driver torque setpoint under an old interpretation of the pedal position, corresponding to the old set of characteristics, towards the driver torque setpoint under a new interpretation of the pedal position, corresponding to the new set of characteristics, and specifically in dependence on the time graph of the pedal position and simultaneously as a function of time, disregarding the time graph of the pedal position.

Abstract: A method for a fill level measurement in accordance with the running time principle, which functions dependably over a long period of time, is provided, having a fill level measuring device with an ultrasonic sensor for transmitting and receiving ultrasound, wherein a repeated check of a resonance frequency of the ultrasonic sensor is performed, in the course of which the ultrasonic sensor is briefly excited to oscillate, following the excitation a signal received by the ultrasonic sensor is picked up, and the actual resonance frequency of the ultrasonic sensor is determined by means of the received signal in that the received signal is digitized and supplied to a digital signal processor, a Fourier transformation of the digitized received signal is performed in the signal processor, a maximum of the Fourier-transformed received signal is determined as a function of the frequency, a frequency at which the maximum occurs is stored as the actual resonance frequency, and during measuring operations the ultrasoni

Abstract: In a method for regulating the power supply of a plurality of field devices S1, S2, S3, A1, A2, connected to a data bus DBL and supplied with electrical current over the data bus DBL, the electrical current requirements of the individual field devices S1, S2, S3, A1, A2 are determined, and the electrical current consumptions of the field devices S1, S2, S3, A1, A2 are adjusted by means of corresponding control signals. In this way, the electrical current consumption of individual field devices S1, S2, S3, A1, A2 can be centrally adjusted and therewith the process conditions matched.

Abstract: A multi-motor drive for a printing press having a plurality of printing unit groups, includes at least one motor provided for each of the printing unit groups, and gear trains via which the printing unit groups are synchronously driven. The gear trains are mechanically separated from one another during a printing operation. The at least one motor is assigned to a respective separation location between the printing unit groups. A method for driving a printing press is also provided.

Abstract: A method and device for suppressing vibrations in a printing press includes placing, on at least one element of the press, a mass that vibrates freely with one degree of freedom, determining the rotational speed of the press and feeding the speed to a control device, and, in the control device, utilizing the rotational speed, determining an actuating variable and feeding the actuating variable to at least one actuator, at least one vibration parameter of the mass being changed in accordance with the rotational speed by the actuator.

Abstract: To be able to insert bands of an arbitrary length into a machine unit, for example intermediate carrier bands given an electrophotographic printer device, the band is seated on tubes. The tubes are pushed into receptacles arranged in the machine unit. The band can then be slipped over the transport and guide drums arranged in the machine unit. Subsequently, the band is tensed and the tubes are pulled from the receptacles.

Abstract: A device for registering the position of a rotor part in a transport system also having a static part in addition to the rotor part includes a dimensional standard forming part of the rotor part, and a plurality of transmitters provided on the static part; and a printing unit and a printing machine including the position registering device.

Abstract: An apparatus and a method for guiding a belt-shaped continuous carrier material in an electrographic printer or copier provides that a continuous belt-shaped carrier material is guided over at least one roller element, the roller element having a trail with respect to the conveying direction of the carrier material. Further, a device for guiding a continuous belt-shaped carrier material in an electrographic printer or copier is provided, in which a roller element can be displaced and/or tilted transversely to the carrier material.

Abstract: A conveyor system (10) for a sheet of printing material (12) in a printing material processing machine (14), including a running member (16) which can be moved through the machine (14) along a transport path (18) using a drive (22), and including a number of encoders (24) which are arranged along the transport path (18) and used to sense the position of the running member (16), the conveyor system having the feature that the encoders (24) are connected to an evaluation unit (26) for progressive sampling of the encoder signals; it being possible for an active encoder (28) and a passive encoder (30) of the number of encoders (24) to be specified in the evaluation unit (26) so that a drive signal can be generated in a signal processor unit (32) on the basis of a change in amplitude of the signal of the active encoder (28) and a change in amplitude of the signal of the passive encoder (30).

Abstract: A method for determining the optimum procedure for a job change on a printing-material processing machine (10) with at least one control computer. The data of a first machine job is compared to the data of a subsequent machine job using a control computer, and the comparison is used to establish an order of the operations to be carried out during the job change. Also provided is a device for determining the optimum procedure for a job change on a printing-material processing machine (10) with at least one control computer. The control computer is intended to compare the data of a first machine job to the data of a subsequent machine job, and to use the comparison to establish an order of the operations to be carried out during the job change.

Abstract: A method of driving a machine related to printing technology, wherein movable elements forming a kinematic chain are coupled with one another via at least one gear mechanism, includes infeeding torque components by a respective motor of at least one group of two motors, respectively located at least at two elements associated with one another. The torque components are of equal amplitude but have opposite directions of rotation, for suppressing disruptive oscillations at least at the one group of two motors. The amplitude of the torque components is proportional to relative rotation of the two elements associated with one another. Rotary encoders are provided to obtain signals for reproducing rotational positions of the elements.

Abstract: A conveyor system (10) for a sheet of printing material (12) in a printing material processing machine (14), including a running member (16) which can be moved through the machine (14) along a transport path (18) using a drive (22), and including a number of encoders (24) which are arranged along the transport path (18) and used to sense the position of the running member (16), the conveyor system having the feature that the encoders (24) are connected to an evaluation unit (26) for progressive sampling of the encoder signals; it being possible for an active encoder (28) and a passive encoder (30) of the number of encoders (24) to be specified in the evaluation unit (26) so that a drive signal can be generated in a signal processor unit (32) on the basis of a change in amplitude of the signal of the active encoder (28) and a change in amplitude of the signal of the passive encoder (30).

Abstract: A duct system suitable for use as an intake manifold for an internal combustion engine, including flap valves (13) for selective opening and closing of the ducts. The positions of the valves are continuously adjustable in order to produce a swirl in the flow of combustion air. To achieve this, a high degree of angular precision is required in the positioning of the valves. Intake manifold manufacturing tolerances need to be compensated during assembly of the valves. A valve adjusting mechanism is provided in mechanical couplings (23) of the valve linkage between the position adjusting motor (19) and the flap valves (13).

Abstract: To be able to insert bands of an arbitrary length into a machine unit, for example intermediate carrier bands given an electrophotographic printer device, the band is seated on tubes. The tubes are pushed into receptacles arranged in the machine unit. The band can then be slipped over the transport and guide drums arranged in the machine unit. Subsequently, the band is tensed and the tubes are pulled from the receptacles.

Abstract: A printer or copier has a toner transfer belt which is moved into an out of engagement with a transfer printing area. The toner transfer belt is carried on an arrangement of rollers that maintain a constant tension on the toner transfer belt. Rigid linking levers extend between the rollers of the roller arrangement so that belt tension is maintained by movement of compensation rollers, outward while moving a transfer roller upward, for example.

Abstract: A flap mechanism includes elements for compensating tolerances and shrinkage of the flap. The compensating elements include a flap edge which is applied to the flap by assembly injection molding after the flap has cooled, thereby decreasing any gap produced between the flap and a surrounding frame by shrinkage of the flap. In addition the flap has a flap shaft which can be journaled in the frame through a conical region on the shaft such that axial shrinkage of the shaft to produce a mounting which is free of play. This construction makes it unnecessary to use additional sealing elements at the mounting locations of the flap, and the flap is also prevented from vibrating in its mounting which, in a worst case scenario, could lead to destruction of the flap.

Abstract: An insert filter 10 for cleaning a gas stream, particularly for the intake air of an internal combustion engine or an air-conditioning unit, which includes a filter frame 11, a filter element 12 placed in the filter frame 11, and a shaft cover 13 and which is placed in the shaft 14 of a duct system 15 that guides the gas stream such that an unfiltered side 16 is separated from a clean side 17 by the filter element 12 and the filter frame 11. The shaft cover 13 closes a shaft opening 24 through which the insert filter 10 is inserted in the shaft 14. The filter frame 11 is connected to the shaft cover 13 so that the filter frame 11 can be removed from the shaft 14 without any need for additional removal aids by simply pulling on the shaft cover 13.