EP0432401A2 - Spinning machine with signal generators emitting error signals when errors occur - Google Patents

Abstract

In a spinning machine having a plurality of workstations and working elements which are at least partially assigned signal generators emitting error signals when errors occur, there is provision for ensuring that the machine control contains an adjustable error-signal evaluation device, to which the signal generators are connected.

Description

The invention relates to a spinning machine with a large number of workstations and work elements, to which at least some error signals emitting signal transmitters are assigned, which are connected to a machine control and which, depending on a received error signal, control processes, such as switching off after a switch-off program, switching off after errors an emergency shutdown program, activating a restart lock and / or displaying an error on a display device.

Errors can occur during the operation of spinning machines, which have very different consequences. Errors can occur which can cause serious damage to the spinning machine, so that if they occur an immediate shutdown of the machine after an emergency shutdown program is advisable. If other errors occur, it may be sufficient to stop the machine after a normal shutdown program. Furthermore, errors can occur where it is sufficient to display them only, so that the operator of the spinning machine has the opportunity to correct them at the appropriate time. It is known that on to detect occurring errors by means of signal transmitters which then emit error signals corresponding to the error. These are connected to the machine control system in such a way that a specific switching operation or control operation is initiated when this error occurs.

The invention has for its object to design a spinning machine of the type mentioned that the operational safety is increased.

This object is achieved in that the machine control contains an adjustable error signal evaluation device to which the signal transmitters are connected.

The invention is based on the knowledge that it is often only after practical operation of a spinning machine that it is found that the original assessment of the errors, ie the control processes assigned to them, was not entirely correct. It can happen that errors that were initially rated as minor errors were undervalued, ie contrary to the original assumption, these errors can lead to serious machine damage. It can also happen that other errors were rated too high, ie that an emergency shutdown program was assigned to them, although in practice it turns out that a normal shutdown program while activating a restart lock would be sufficient. It can therefore occur that either the spinning machine is not sufficiently reliable or that it switches off too often, so that the production output is unnecessarily reduced. Based on this knowledge, the invention therefore provides that means are available with which the evaluation or classification of the errors can be changed simply and quickly and adapted to the conditions actually found in practice.

Fig. 1

zeigt eine Darstellung einer Maschinensteuerung mit einem Verknüpfungsglied, das eine Vielzahl von Eingängen entsprechend der Anzahl der Signalgeber aufweist, die mittels einer Eingabeeinrichtung mit drei Ausgängen verknüpfbar sind, die zu Signalauslösern für entsprechende Schaltvorgänge führen,

Fig. 2

eine Darstellung einer Ausführungsform, bei welcher den Fehlersignalen Zusatzinformationen zugegeben werden, wobei dann die Fehlersignale entsprechend der Zusatzinformationen zu Signalauslösern weitergeführt werden und

Fig. 3

ein Diagramm einer Ausführungsform ähnlich Fig. 2.

Further features and advantages of the invention result from the following description of the exemplary embodiments schematically illustrated in the drawing.

Fig. 1

1 shows a representation of a machine control with a logic element that has a large number of inputs corresponding to the number of signal transmitters, which can be linked by means of an input device with three outputs, which lead to signal triggers for corresponding switching operations,

Fig. 2

a representation of an embodiment in which additional information is added to the error signals, the error signals then being forwarded in accordance with the additional information to signal triggers and

Fig. 3

2 shows a diagram of an embodiment similar to FIG. 2.

In the embodiment according to FIG. 1, the machine control (10) initially contains a display device (12), to which all error signals (11) of the signaling devices, not shown, and / or working elements are assigned. If an error signal (11) occurs, this is displayed by the display device (12). The error signals (11) are passed through the display device (12) to a logic element (13) which is provided with a number of inputs which corresponds to the number of signal transmitters. Within the logic element (13), the inputs are linked to the (in the exemplary embodiment three) outputs of the logic element (13), which are connected to signal triggers (14, 15, 16). The signal trigger (14) triggers a signal which initiates an emergency shutdown program, for example. The signal generator (15) triggers, for example, a signal which initiates a normal switch-off program. The signal trigger (16) triggers a signal, for example, which activates a restart lock.

The link (13) is connected to an input unit (17), via which the link between the inputs and the outputs of the link (13) is determined, i.e. with which the error signals (11) are evaluated in such a way that they are supplied to the signal triggers (14, 15, 16) in accordance with this evaluation. If necessary, the link between the inputs and the outputs of the link (13) and thus the evaluation of the error signals can be changed via the input unit (17). For the sake of illustration, it is only indicated that the inputs of the logic element (13) are only linked to one output in each case. Of course, it is also possible to link the inputs to more than one of these outputs. For example, when a signal occurs which is fed to the signal trigger (14) for the emergency shutdown program, it is also expedient to feed this to the signal trigger (16) which activates the restart lock.

In the embodiment according to FIG. 2, the machine control (23) contains an input for the error signals (18) of all signal transmitters. In this embodiment, the error signals (18) are encoded, i.e. they contain information about which of the plurality of signal generators they were generated by. These thus origin-coded error signals are all fed to a display device (19) which converts the error signal (18) into a corresponding display.

The origin-coded error signals (18) are also fed to a device (20) which is equipped with means for recognizing the origin coding and which, in accordance with this origin coding, triggers a signal with additional information (a, b, c). The original signals (18) and the additional signals (a, b, c) are fed to a device (21) which connects the signals to one another. The combined

The signal is then fed to a switch (22) which enables paths (a ', b', c ') assigned to the additional signals (a, b, c) for the error signals (18), each of which has a signal trigger (14, 15, 16) which trigger an emergency shutdown program, a normal shutdown program and the activation of a restart lock.

By means of an input device connected to the device (20), it is possible to assign the additional signals (a, b, c), which serve as direction signals, in a changed manner to the original-coded signal (18), if necessary, for example in order to adapt them later to make practical needs.

In the embodiment of FIG. 3, the error signals (25) of the corresponding signal transmitters are fed to inputs of an input unit (26). The input unit (26) adds additional information to the error signals (25) obtained, after which the signal created in the input unit (26) is fed to a linking device (27). This linking device (27) adds one or more additional signals, which are indicated by the arrows (28). These additional signals determine the classification of the error signal, i.e. whether it is only displayed and / or triggers a normal shutdown program or triggers an emergency shutdown program and / or activates a lockout.

If only one display signal is assigned to the signal created by the input unit (26), the original error signal is only displayed in the display device (29). If a further signal is fed to the signal, an evaluation stage (30) connected downstream of the display device (29) is first checked to see whether this is an emergency stop signal. If the emergency stop signal is detected, it is forwarded to a corresponding signal trigger (14). If there is no emergency stop signal, the signal continues to a further evaluation device (31) which checks whether a normal stop signal is closed was given. If the normal off signal is found, it is forwarded to a corresponding signal trigger (15). If this signal is missing, the remaining signal runs directly to a signal trigger (16) which activates a restart lock.

Claims (3)

Spinning machine with a large number of work stations and work elements, to which at least some of the error signals emitting signals are assigned when errors occur, which are connected to a machine control system and which, depending on an error signal received, control processes such as switching off after a switch-off program, switching off after an emergency switch-off program Activating a restart lock and / or displaying an error on a display device, characterized in that the machine controller (10, 23) has an adjustable error signal evaluation device (17, 13; 17, 20, 21, 22; 26, 27, 29), 30,31) to which the signal transmitters are connected. Spinning machine according to claim 1, characterized in that the error signal evaluation device contains a logic element (13) to the inputs of which the signal transmitters are connected, and that adjustable means (17) for selectively connecting the inputs of the logic element (13) to at least one of several Outputs of the logic element (13) are provided. Spinning machine according to Claim 1, characterized in that the error signal evaluation device contains a device (20, 26), to which all signal transmitters are connected, for recognizing an error signal of a specific signal transmitter and adjustable means for assigning additional information to a received error signal, which includes the additional information recognizing and the error signal corresponding to the additional information is connected to at least one of several further signals (14, 15, 16) triggering a control signal (22; 30, 31).

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