EP1031420B1 - Vorrichtung zur Überwachung von sicherheitsrelevanten Vorgängen an Maschinen - Google Patents
Vorrichtung zur Überwachung von sicherheitsrelevanten Vorgängen an Maschinen Download PDFInfo
- Publication number
- EP1031420B1 EP1031420B1 EP99103804A EP99103804A EP1031420B1 EP 1031420 B1 EP1031420 B1 EP 1031420B1 EP 99103804 A EP99103804 A EP 99103804A EP 99103804 A EP99103804 A EP 99103804A EP 1031420 B1 EP1031420 B1 EP 1031420B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- safety
- input
- output device
- control
- relevant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
- B41F33/0009—Central control units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
- B41F33/0018—Protection means against injury to the operator
Definitions
- the main drive of the machine is also made up of two redundant systems monitored and in the event of a mismatch between safety-relevant states the drive is switched off.
- the redundant structure includes two computers, one of which controls the main drive and the other the actual machine control. If the main main drive computer fails the computer for the machine control takes over the control function of the Drive computer and leads the main drive to a standstill in a controlled manner. additionally Various protective contacts, emergency stop buttons ect. read, the one hand indirectly via an input card to the drive computer and redundant via direct pin inputs on the drive computer as well Drive computer supplied. Furthermore, the actual values of the main drive element read in via two separate incremental encoders, one of which is directly on the motor and the other on a rotating part of the printing press, for example on Plate cylinder is attached. The signals from the first incremental encoder on the motor are fed to the drive computer via separate signal lines and the signals of the Incremental encoder on the plate cylinder also via separate signal lines Drive computer, as well as the computer for the machine control.
- a disadvantage of the prior art according to DE 195 29 430 A1 is that in addition to the Monitoring of the drives no further monitoring for other security-relevant processes are taken into account. That means, none can Safety-relevant inputs read in and no redundant safety outputs be set.
- the object of the invention is to be seen in to create a more cost effective solution that extends safety-relevant functions is possible without additional cable expenditure.
- the object of the invention is that, by simplifying at the same time the BG prescribed conditions are met.
- the advantage of the invention is that the import of those relevant for security States does not take place centrally at a point that can be reached via the line, but instead decentralized directly at the point at which the state is created or changed.
- the means a bus system installed for the transmission of these status signals laid along the press and connecting several security devices installed on site Input / output devices with one or more, for a safety-critical Area of responsible security monitoring controls.
- the connection to that Bus system takes place in the shortest possible way from the location to which the safety-relevant State is read.
- a simple extension to additional monitoring further safety-relevant states is possible in that each as modular safety monitoring controls and Security reading device can be connected to the bus system anywhere.
- the safety input / output devices are installed, for example, on site where there are emergency stop buttons or so-called limit switches of a protective device. Furthermore, the security reading device also queries analog signals such as For example, the temperature of a dryer, which when a Maximum value can cause a shutdown.
- the safety input / output device reads the status of the emergency stop button, limit switch or Temperature sensor and transmits this to a via a bus system Safety monitoring control.
- the security monitoring controller is for example attached to a drive element on site which is a continuous or discontinuous safety-critical movement. That is why the movement is safety-critical because an operator can get into the danger area.
- Safety input / output device switched, which the safety-relevant signals of the drive element and notifies the safety monitoring control.
- the safety input / output device and the safety monitoring control can in this case be integrated into one unit.
- the safety input / output device places its read-in state on the bus system, which means that all safety monitoring controls on the bus system have access to the reported message. This process is known as broadcast. It decides for itself whether a safety monitoring controller is interested in the reported message. This means that the message is ignored if the reported safety-critical state is not relevant for the drive monitored by the safety monitoring controller. However, appropriate measures are taken if the reported safety-critical drive is relevant for the drive monitored by the safety monitoring control. Thus, depending on their responsibility, each safety monitoring controller only takes over the essential. The targeted evaluation or utilization of only the important messages relieves Ballast's security system because only the necessary messages are processed.
- the security monitoring control on the Message of the security input / output direction has access, determines the permitted operating states and only becomes active if there is a faulty state.
- a faulty condition exists, for example, when a drive is outside the command of the operational control.
- the redundancy is double Execution of the contacts of the respective switches and buttons and the double Execution of the input / output devices ("normal" input / output device and Safety input / output device).
- On the drive itself in addition to the encoder Motor, either an additional encoder is attached or the encoder on the motor is considered secure, which is then provided with a redundant evaluation. In any case
- Safety monitoring control is the operational control as a monitoring body allocated. If the operational control fails or there is a malfunction, all safety-related functions through the safety monitoring control led into a safe state. This is possible because both Operation control, as well as the safety monitoring control via the safety-relevant operating states have the same information.
- the term "same Information" applies as long as the redundant monitoring of the safety-relevant Operating conditions provides identical results. If this is not the case, the Security monitoring control in place. Whether there is a match of the information in the operational control and the safety monitoring control, is by means of a consistency check checked. This check can be done in the operational control, or in the Security monitoring control take place. If the various controls on separate bus systems connected by bus couplers, the Consistency check is also made in the bus coupler. The consistency check brings the advantage that a restart of the machine after a faulty Condition is only possible when the error has been rectified.
- Normal operation is always carried out by the actual operating control. Normal operation is when the safety monitoring controller does not detect a faulty status of the operating controller. If there is a faulty state, the safety monitoring control intervenes and guides the actuator / drive element into the safe state in accordance with the specifications.
- the bus system does not have to be constructed redundantly, rather it is necessary that a failure of the bus system is reliably recognized. Since the safety monitoring control is directly assigned to the drive and if the bus system fails, a routine stored in the safety monitoring control leads the drive to the safe state. The same applies to the safety input / output device. If this detects a failure of the bus system, measures are also carried out which bring about a safe state of the actuating elements to be controlled. These measures are also stored on the safety input / output device.
- a bus system in the transmission speed is impaired if a large number of participants are connected or if the distance that a bus system covers is very long, for example for the Safety route and the operating route separate bus systems are provided.
- one bus system is coupled to the other by means of a Bus coupling carried out.
- several bus systems to be provided by one Bus coupling can be connected. That a bus system regarding the Transmission speed is not affected, is avoided in the design. But there is also an impairment of the transmission speed of the bus system recognized and the machine brought into the safe state.
- Another variant of the invention provides for the different operating states Machine to define different monitoring criteria. Will a machine at open protective grille in a creep speed that differs from the actual operating case operated, other safety requirements are imposed by the operator be defined by appropriate entries. For example, pressing a separate switch or button can initiate this creep speed. Because of this Creep speed is safety-relevant and the open protective grille from the safety Input / output device is recognized, there is a corresponding message Security monitoring control available. The In contrast to normal operation, safety monitoring control can now in which an open protective grille would lead to the machine coming to a standstill, even with open protective grille allow a maximum speed of the drive element. The means to release the drive for operation.
- different Monitoring criteria can continue to relate to monitoring the angular position, the acceleration, the torque or something else. Thus, the Different safety regulations assigned to different operating modes become.
- this safety input / output device has a universal structure with several possibly freely definable inputs and outputs, this device can also do so used to manage non-safety related inputs or outputs.
- this device In order to the safety input / output device has a double function. Not least Because of the above: double function, the system can be used as a redundancy to save effort be designated.
- the freely configurable inputs / outputs of the safety input / output device offer the advantage that they can be manufactured as modules in large numbers and are therefore inexpensive.
- a safety input / output device is also conceivable a component that is used less or for different operating modes remove and replace with a defective one.
- the configuration of the module could through a software import performed by the machine's operating computer respectively. To meet the regulations of the professional association, would be with this process requires a final safety acceptance, for example may look like that if the safety input / output devices are not configured correctly machine start-up is prevented.
- a machine not only from one Component consists, but as usual in the printing industry from a printing press which carries out the imaging of paper and one following this machine located further processing machine, for example from a folder.
- both components can have separate control units form, which are to be regarded as uniform in the security concept.
- the separate bus systems are interconnected by a bus coupler to connect so that the security-relevant messages from the security input / output devices all connected to the two bus systems Security monitoring controls are accessible. The procedure regarding the handling of the message is identical to the type described at the beginning. Of course, a coupling of several bus systems is also conceivable.
- the operating control 1 for a number of drive and actuating processes a machine, not shown, preferably printing machine.
- This Operating control 1 is by means of bus system 2 with a number of input / output devices 3, with safety input / output devices 4, with a Drive control 5 and a safety monitoring control 6 connected.
- the task of operational control 1 is to coordinate the various Drives 7, which are the main drive of the machine, auxiliary drives for various Tasks such as Raising and lowering the stack of paper, driving the ink fountain pen or Similar and also relates to actuators for example for adjusting registers.
- the interaction of Adjusting elements 8 coordinates the reading of switches 9, 10 or the displays 11.
- As Input / output devices serve the input / output devices 3 and Drive control 5.
- the safety-relevant adjustment processes is a safety Assigned input / output device 4, which controls these processes redundantly, or reads.
- the drive 7 which, as already mentioned, a main drive, an auxiliary drive or can be an actuator, which in turn can be powered by motors of various technologies ( DC motor, three-phase motor, brushless motor etc.) can be implemented, is put into operation by the drive control 5 by means of the power unit 12.
- the Connection between drive control 5 and power section 12 is bidirectional.
- On the Power section 12 also has the security input / output device 4 bidirectional Access.
- the drive control 5 also exists in each case and the safety input / output device a control option for a brake 15, which is mechanically connected to the drive 7 and this in an emergency can stop. If the drive controller 5 is arrested incorrectly, as a result of which the Drive 7 is operated outside the predetermined speed, engages Safety monitoring device 6 directly towards the power unit 12, interrupts the Power supply for the drive 7 and the brake 15 are applied. The drive 7 is thus led to the safe state.
- the control element 8 which for example a pneumatic cylinder for turning on and off of ink rollers can be activated by an input / output control 3. Redundant for this purpose, access is also provided via a security input / output device. If the safety input / output device brings faulty behavior here the control element 8 in the safe state.
- the switches 9, 10 are safety-relevant because they e.g. trigger an emergency stop, or the Represent the open state of a protective grille. Both status queries are considered Designates safety-relevant inputs, which is why redundant switch contacts 9a, 9b and 10a, 10b are required. These are sent separately through the input / output device 3 and the safety input / output device 4 are read.
- the Safety input / output device 4 can be a common one for all applications Facility or be available separately for each application. This is dependent on the number of available inputs / outputs or on the spatial Assignment. If the switches 9, 10 function correctly, the switch contacts 9a, 9b and 10a, 10b each have the same states.
- the operation control 1 can also be used to access inputs or outputs can be operated by the safety input / output device 4.
- This one or Outputs are then defined as ordinary inputs or outputs, that is, they become not considered security relevant.
- the advantage is that free, not used Inputs or outputs on the safety input / output device can be used. These can be used, for example, for the display 16 or similar functions.
- FIG. 2 shows essentially the same arrangement of the safety devices as FIG. 1 but with separate bus systems.
- the bus system 2 for the Connection of the security input / output device 4 and the Safety monitoring device 6 used, while an additional bus system 17th the connection of the actual operating equipment input / output device 3 and Drive control 5 takes over.
- This constellation is advantageous when a high Number of bus participants (3,4,5,6) depends on the bus system or if the Line length of the bus system exceeds a certain length.
- the Bus systems 2, 17 coupled by a bus coupler 18. It can be seen that through the Bus coupler 18 can also be connected to other bus systems 19.
- the Operation control 1 is by a further bus system 20, which for example is a VME bus system can be connected to the bus coupler 18
Landscapes
- Safety Devices In Control Systems (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Operation Control Of Excavators (AREA)
Description
Der Normalbetrieb wird immer durch die eigentlichen Betriebssteuerung vollzogen. Der Normalbetrieb liegt dann vor, wenn die Sicherheitsüberwachungssteuerung keinen fehlerhaften Zustand der Betriebssteuerung feststellt. Liegt ein fehlerhafter Zustand vor, greift die Sicherheitsüberwachungssteuerung ein und führt das Stell-/Antriebselement entsprechend der Vorgaben in den sicheren Zustand.
Das gleiche gilt für die Sicherheits Ein-/Ausgabeeinrichtung. Falls diese einen Ausfall des Bussystems erkennt, werden ebenfalls Maßnahmen ausgeführt, die einen sicheren Zustand der anzusteuernden Stellelemente bewirken. Diese Maßnahmen sind ebenso auf der Sicherheits Ein-/Ausgabeeinrichtung hinterlegt.
Das Stell-/ Antriebselement verfügt über eine direkt ihm zugeordnete Regelung, Stromrichter und Leistungsteil. Diese Regelung empfängt seitens der Betriebssteuerung Befehle, welche beispielsweise heißen:
- fahre mit einer konstanten Drehzahl 3000 Druck/h,
- bringe das Antriebselement bei der Winkelstellung 270 Grad zum Stillstand,
- usw.
Es zeigt:
- 1
- Betriebssteuerung
- 2
- Bussystem
- 3
- Ein-/Ausgabeeinrichtung (Busteilnehmer)
- 4
- Sicherheits Ein-/Ausgabeeinrichtung (Busteilnehmer)
- 5
- Antriebssteuerug (Busteilnehmer)
- 6
- Sicherheitsüberwachungseinrichtung (Busteilnehmer)
- 7
- Antrieb
- 8
- Stellelement
- 9
- Schalter
- 9a,9b
- Schalterkontakt
- 10
- Schalter
- 10a,10b
- Schalterkontakt
- 11
- Anzeige
- 12
- Leistungsteil
- 13
- Encoder
- 14
- Encoder
- 15
- Bremse
- 16
- Anzeige
- 17
- Bussystem
- 18
- Buskoppler
- 19
- Bussystem
- 20
- Bussystem
Claims (11)
- Vorrichtung zur Überwachung von sicherheitsrelevanten Vorgängen an Stell-/Antriebselementen an Maschinen mit
mindestens einer Betriebssteuerung für sicherheitsrelevante und nichtsicherheitsrelevante Vorgänge, mindestens einer Sicherheitsüberwachungssteuerung mindestens einer Sicherheits Ein/-Ausgabeeinrichtung und
einem redundant aufgebauten Ein-/Ausgabesystem für sicherheitsrelevante Vorgänge
dadurch gekennzeichnet, daß mindestens ein Feldbussystem (2) die Betriebssteuerung (1), die mindestens eine Sicherheits Ein/Ausgabeeinrichtung (4) und die mindestens eine Sicherheitsüberwachungssteuerung (6) miteinander verbindet und daß die Sicherheits Ein-/Ausgabeeinrichtung (4) oder die Sicherheitsüberwachungssteuerung (6) unter Zwischenschaltung der Sicherheits Ein-/Ausgabeeinrichtung (4) an dem den sicherheitsrelevanten Vorgang ausführenden bzw, eingebbaren Stell-/Antriebselement (7,8;9,10) verteilt angeordnet ist - Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß die mindestens eine Sicherheits Ein-/Ausgabeeinrichtung (4) dezentral an dem jeweiligen Stell-/Antriebselement (7,8) angeordnet ist und daß diese mit mindestens einer Sicherheitsüberwachungssteuerung (6) mittels Feldbussystem (2) verbunden ist. - Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß die Sicherheits Ein-/Ausgabeeinrichtung (4) als Ein-/Ausgabeeinrichtung (3) für nichtsicherheitsrelevante Vorgänge verwendbar ist. - Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß die Sicherheits Ein-/Ausgabeeinrichtung (4) und die Ein-/Ausgabeeinrichtung (3) gegenseitig austauschbar sind. - Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß die Sicherheitsüberwachungssteuerung (6) und/oder die Sicherheits Ein-/Ausgabeeinrichtung (4) entsprechend ihrem Einsatz konfigurierbar ist - Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß mehrere Feldbussysteme (2,17,19) verschiedener Maschinenkomponenten sicherheitstechnisch mittels Buskoppler (18) aneinanderkoppelbar sind. - Vorrichtung nach einem der vorhergehenden Ansprüche ,
dadurch gekennzeichnet, daß das Feldbussystem (2,17,19) ein CAN-Bus ist. - Verfahren zur Überwachung von sicherheitsrelevanten Vorgängen an Stell-/Antriebselementen an Maschinen mit mindestens einem Betriebsrechner, mindestens einer Steuerung für sicherheitsrelevante Vorgänge, mindestens einer Sicherheitsüberwachungssteuerung
mindestens einer Sicherheits Ein-/Ausgabeeinrichtung und einem redundant aufgebauten
Ein-/Ausgabesystem für sicherheitsrelevante Vorgänge
dadurch gekennzeichnet, daß eine von der mindestens einen Sicherheits Ein-/Ausgabeeinrichtung (4) eingelesene Nachricht auf das Bussystem (2,17,19) gelegt wird, und daß die auf dem Bussystem (2,17,19) befindliche Nachricht erst von der mindestens einen Sicherheitsüberwachungssteuerung (6) übernommen wird, wenn diese Nachricht für die Sicherheitsüberwachungssteuerung (6) relevant ist. - Verfahren nach Anspruch 8,
dadurch gekennzeichnet, daß in der Betriebssteuerung (1), oder in der Sicherheitsüberwachungssteuerung (6) oder in einem Buskoppler (18) ein Konsistenzcheck durchgeführt wird. - Verfahren nach Anspruch 8,
dadurch gekennzeichnet, daß anhand der von der mindestens einen Sicherheits Ein-/Ausgabeeinrichtung (4) eingelesenen Nachricht unterschiedliche Überwachungskriterien definiert werden. - Verfahren nach Anspruch 9,
dadurch gekennzeichnet, daß die unterschiedlichen Überwachungskriterien durch die unterschiedlichen Betriebsarten der Maschine vorgegeben werden.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04102212.0A EP1454747B1 (de) | 1999-02-25 | 1999-02-26 | Vorrichtung zur Überwachung von sicherheitsrelevanten Vorgängen an Maschinen |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19908230 | 1999-02-25 | ||
DE19908230A DE19908230A1 (de) | 1999-02-25 | 1999-02-25 | Vorrichtung zur Überwachung von sicherheitsrelevanten Vorgängen an Maschinen |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04102212.0A Division EP1454747B1 (de) | 1999-02-25 | 1999-02-26 | Vorrichtung zur Überwachung von sicherheitsrelevanten Vorgängen an Maschinen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1031420A1 EP1031420A1 (de) | 2000-08-30 |
EP1031420B1 true EP1031420B1 (de) | 2004-08-11 |
Family
ID=7898878
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04102212.0A Expired - Lifetime EP1454747B1 (de) | 1999-02-25 | 1999-02-26 | Vorrichtung zur Überwachung von sicherheitsrelevanten Vorgängen an Maschinen |
EP99103804A Expired - Lifetime EP1031420B1 (de) | 1999-02-25 | 1999-02-26 | Vorrichtung zur Überwachung von sicherheitsrelevanten Vorgängen an Maschinen |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04102212.0A Expired - Lifetime EP1454747B1 (de) | 1999-02-25 | 1999-02-26 | Vorrichtung zur Überwachung von sicherheitsrelevanten Vorgängen an Maschinen |
Country Status (4)
Country | Link |
---|---|
US (1) | US6832121B1 (de) |
EP (2) | EP1454747B1 (de) |
JP (1) | JP5052710B2 (de) |
DE (2) | DE19908230A1 (de) |
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DE19502499A1 (de) * | 1995-01-27 | 1996-08-01 | Pepperl & Fuchs | Bussystem zur Steuerung und Aktivierung von miteinander vernetzten ASI-Slaves, vorzugsweise binäre Sensoren oder Eingangsmodule und/oder Ausgangsmodule oder Aktuatoren eines Aktuator-Sensor-Interface |
DE19529430C2 (de) * | 1995-07-06 | 2000-07-13 | Baumueller Nuernberg Gmbh | Elektrisches Antriebssystem zur Verstellung von mehreren dreh- und/oder verschwenkbaren Funktionsteilen |
DE19540069A1 (de) * | 1995-10-27 | 1997-04-30 | Elan Schaltelemente Gmbh | Anordnung zur Erfassung und/oder Verarbeitung von Signalen elektrischer Bauteile, die sicherheitstechnische Zwecke oder Auflagen für Geräte oder Anlagen erfüllen |
US5880954A (en) * | 1995-12-04 | 1999-03-09 | Thomson; Robert | Continous real time safety-related control system |
DE19606673C1 (de) * | 1996-02-22 | 1997-04-10 | Siemens Ag | Aktuator-Sensor-Interface-System |
US6047222A (en) * | 1996-10-04 | 2000-04-04 | Fisher Controls International, Inc. | Process control network with redundant field devices and buses |
DE19716457C2 (de) * | 1997-04-21 | 1999-07-01 | Baumueller Nuernberg Gmbh | Steuerungsverfahren für ein elektrisches Antriebssystem zum synchronen Verstellen mehrerer bewegbarer Funktionsteile |
JPH11299291A (ja) * | 1998-04-16 | 1999-10-29 | Sanyo Denki Co Ltd | 多軸モータ制御装置 |
-
1999
- 1999-02-25 DE DE19908230A patent/DE19908230A1/de not_active Withdrawn
- 1999-02-26 EP EP04102212.0A patent/EP1454747B1/de not_active Expired - Lifetime
- 1999-02-26 DE DE59910196T patent/DE59910196D1/de not_active Expired - Lifetime
- 1999-02-26 EP EP99103804A patent/EP1031420B1/de not_active Expired - Lifetime
- 1999-09-30 JP JP27891599A patent/JP5052710B2/ja not_active Expired - Fee Related
-
2000
- 2000-01-20 US US09/488,739 patent/US6832121B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP1454747A2 (de) | 2004-09-08 |
EP1454747B1 (de) | 2014-04-02 |
EP1031420A1 (de) | 2000-08-30 |
EP1454747A3 (de) | 2007-10-10 |
JP5052710B2 (ja) | 2012-10-17 |
US6832121B1 (en) | 2004-12-14 |
DE19908230A1 (de) | 2000-08-31 |
JP2000246878A (ja) | 2000-09-12 |
DE59910196D1 (de) | 2004-09-16 |
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