EP1009937B1 - Protective circuit - Google Patents
Protective circuit Download PDFInfo
- Publication number
- EP1009937B1 EP1009937B1 EP98924022A EP98924022A EP1009937B1 EP 1009937 B1 EP1009937 B1 EP 1009937B1 EP 98924022 A EP98924022 A EP 98924022A EP 98924022 A EP98924022 A EP 98924022A EP 1009937 B1 EP1009937 B1 EP 1009937B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plug
- actuator
- connection
- protective circuit
- safety switch
- 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
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
Definitions
- the invention relates to a safety circuit for the control of electrical actuators according to the genus of the main claim.
- an electrical switch which is designed as an intermediate connector is and has protruding electrical plug contacts on one side, so that in one Socket to be plugged in, and is designed to be on an opposite side to be able to attach a plug located at one end of a cable.
- the desk is used to switch an electrical device on and off without its own switch or one String of lights and has the same function as a switch on the consumer itself Switch itself has no safety function. Rather, it is safe to operate the switch; which can be done via a pneumatic actuator from the distance, so that the danger is low to come into contact with live parts
- a safety circuit according to the preamble of claim 1 is known from the DE 195 15 640 known. Here is with the help of two electrical connections in one between a control circuit and the electromagnet running electrical line a safety switch inserted, which is for example a limit switch.
- the safety circuit according to the invention with the features of claim 1 the advantage that an existing connector (for example according to DIN standard) can be expanded in an electrical system so that the control signals for the electrical actuator inside the housing via the connectable outside Safety switches can be performed.
- On the first connector is an additional one Intermediate plug with two inputs can be easily plugged in and, if necessary, with a single one Central screw lockable, so that the one input is the first connector for the Control signals of the actuator and the other input the second connector for the Safety switch forms.
- the adapter plug leads to the actuator.
- the adapter plug is simple can be retrofitted without in the control or regulating circuit or the mechanical design to intervene in the system. Elaborate cable, clamping or soldering work on the often relatively inaccessible Attachment omitted.
- control signals are in a conventional manner via the in Row of safety switches located in the control circuit.
- a Transzorb diode can be connected, which bridges the poles of the control line.
- Figure 1 is a magnet 1 as an electrical actuator shown for a hydraulic system that with a first Plug 2 via a cable connection 3 with control signals is supplied for the actuation of the actuator.
- the plug 2 is not directly connected to one corresponding connector on the housing of the magnet 1, but connected via an adapter plug 4.
- the adapter plug 4 has an input 5 for the control line and another input 6 for connection a safety switch via an additional one Plug 7 on.
- the intermediate connector 4 is with its inputs 5 and 6 and the additional plug 7 in Figure 2 shown in detail.
- the output 8 of the intermediate plug 4 is placed directly on the magnet 1 and on this attached via a screw 9.
- the screw 9 is in the Figure 1 can be seen in plan view. Inside the adapter plug 4 are the necessary electrical connections made by crimping or soldering, the further details shown in the figure for the invention Construction are not essential.
- FIG. 3 An electrical equivalent circuit diagram of the invention Safety circuit is shown in Figure 3, the Control line for magnet 1 between the connection point 10 and the connection point 11 of the input 6 by means of of a safety switch 12 can be switched through or is separable. By plugging in the additional connector 7 can thus a safety switch 12 with a trigger function selected for each application simply to the existing arrangement via the adapter plug 4 can be switched on.
- connection point 16 represents the ground connection.
- FIG. 5 shows different views of the connector 17 with mutually perpendicular Inputs 5 and 6 according to Figure 4, with here the explanations for FIG. 2 are referred to.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Fluid-Pressure Circuits (AREA)
- Emergency Protection Circuit Devices (AREA)
- Control Of Combustion (AREA)
- Air Bags (AREA)
- Cookers (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
Description
Die Erfindung betrifft eine Sicherheitsschaltung für die Ansteuerung von elektrischen Stellgliedem nach der Gattung des Hauptanspruchs.The invention relates to a safety circuit for the control of electrical actuators according to the genus of the main claim.
Es sind beispielsweise sogenannte Zweihand-Sicherheitsschaltungen für die Ansteuerung von elektrischen Stellgliedern oder elektrischen Maschinen aus dem "AEG-Hilfsbuch 1, Grundlagen der Elektrotechnik, Elitera Verlag Berlin 1972, Seiten 417, 418" bekannt, bei denen mit einem separaten Not-Aus-Schalter der Stromkreis zur Versorgung der Maschine jederzeit unterbrochen werden kann.For example, there are so-called two-hand safety circuits for controlling electrical actuators or electrical machines from "AEG Aid Book 1, Basics der Elektrotechnik, Elitera Verlag Berlin 1972, pages 417, 418 ", in which with a separate emergency stop switch to power the machine at all times can be interrupted.
Aus der US-A-4 150 264 ist ein elektrischer Schalter bekannt, der als Zwischenstecker ausgebildet ist und an einer Seite abstehende elektrische Steckkontakte hat, um damit in eine Steckdose eingesteckt zu werden, und an einer gegenüberliegenden Seite so gestaltet ist, um einen an einem Ende eines Kabels befindlichen Stecker aufstecken zu können. Der Schalter dient zum Ein- und Ausschalten eines elektrischen Gerätes ohne eigenen Schalter oder einer Lichterkette und hat insofern dieselbe Funktion wie ein Schalter am Verbraucher selbst. Der Schalter selbst hat keine Sicherheitsfunktion. Sicher ist vielmehr die Bedienung des Schalters; die über einen pneumatischen Aktuator von der Feme aus erfolgen kann, so daß die Gefahr gering ist, mit elektrische Spannung führenden Teilen in Berührung zu kommen,From US-A-4 150 264 an electrical switch is known which is designed as an intermediate connector is and has protruding electrical plug contacts on one side, so that in one Socket to be plugged in, and is designed to be on an opposite side to be able to attach a plug located at one end of a cable. The desk is used to switch an electrical device on and off without its own switch or one String of lights and has the same function as a switch on the consumer itself Switch itself has no safety function. Rather, it is safe to operate the switch; which can be done via a pneumatic actuator from the distance, so that the danger is low to come into contact with live parts
Eine Sicherheitsschaltung nach dem Oberbegriff des Patentanspruchs 1 ist aus der DE 195 15 640 bekannt. Hier ist mit Hilfe zweier elektrischer Verbindungen in eine zwischen einer Ansteuerschaltung und dem Elektromagneten verlaufende elektrische Leitung ein Sicherheitsschalter eingefügt, der zum Beispiel ein Endschalter ist.A safety circuit according to the preamble of claim 1 is known from the DE 195 15 640 known. Here is with the help of two electrical connections in one between a control circuit and the electromagnet running electrical line a safety switch inserted, which is for example a limit switch.
Die erfindungsgemäße Sicherheitsschaltung mit den Merkmalen des Patentanspruchs 1 hat den Vorteil, daß auf einfache Weise eine bereits vorhandene Steckverbindung (beispielsweise nach DIN-Norm) in einer elektrischen Anlage so erweitert werden kann, daß die Ansteuersignale für das elektrische Stellglied im Innern des Gehäuse über den außen anschließbaren Sicherheitsschalter geführt werden können. Auf die erste Steckverbindung ist ein zusätzlicher Zwischenstecker mit zwei Eingängen einfach aufsteckbar und gegebenenfalls mit einer einzigen Zentralschraube sicherbar, so daß der eine Eingang die erste Steckverbindung für die Ansteuersignale des Stellgliedes und der andere Eingang die zweite Steckverbindung für den Sicherheitsschalter bildet. Ein Ausgang des an drei Seiten Steckverbindungen aufweisenden Zwischensteckers führt zum Stellglied. Der Zwischenstecker ist dabei auf einfache Weise nachrüstbar, ohne in die Steuer- oder Regelschaltung oder die mechanische Ausgestaltung der Anlage einzugreifen. Aufwendige Kabel-, Klemm oder Lötarbeiten an der oft relativ unzugänglichen Anlage entfallen.The safety circuit according to the invention with the features of claim 1 the advantage that an existing connector (for example according to DIN standard) can be expanded in an electrical system so that the control signals for the electrical actuator inside the housing via the connectable outside Safety switches can be performed. On the first connector is an additional one Intermediate plug with two inputs can be easily plugged in and, if necessary, with a single one Central screw lockable, so that the one input is the first connector for the Control signals of the actuator and the other input the second connector for the Safety switch forms. An outlet of the connector on three sides The adapter plug leads to the actuator. The adapter plug is simple can be retrofitted without in the control or regulating circuit or the mechanical design to intervene in the system. Elaborate cable, clamping or soldering work on the often relatively inaccessible Attachment omitted.
Gemäß Patentanspruch 3 sind die Ansteuersignale in an sich bekannter Weise über den in
Reihe im Ansteuerstromkreis liegenden Sicherheitsschalter geführt. Zur Vermeidung von störenden
Spannungsspitzen durch die Sicherheitsschaltvorgänge im Zwischenstecker ist gemäß
Patentanspruch 4 eine Transzorb-Diode anschließbar, die die Pole der Ansteuerleitung überbrückt.According to
Weitere vorteilhafte Ausführungsformen sind in den Patentansprüchen 2 und 5 angegeben. Further advantageous embodiments are specified in
Ausführungsbeispiele der erfindungsgemäßen Sicherheitsschaltung
werden anhand der Figuren erläutert. Es zeigen:
In Figur 1 ist ein Magnet 1 als elektrisches Stellglied
für ein Hydrauliksystem gezeigt, der mit einem ersten
Stecker 2 über eine Kabelverbindung 3 mit Ansteuersignalen
für die Betätigung des Stellgliedes versorgt wird.
Der Stecker 2 ist gemäß der Erfindung nicht direkt an eine
entsprechende Steckerkupplung am Gehäuse des Magneten
1, sondern über einen Zwischenstecker 4 angeschlossen.In Figure 1 is a magnet 1 as an electrical actuator
shown for a hydraulic system that with a
Der Zwischenstecker 4 weist einen Eingang 5 für die Ansteuerleitung
und einen anderen Eingang 6 für den Anschluss
eines Sicherheitsschalters über einen zusätzliche
Stecker 7 auf. Der Zwischenstecker 4 ist mit seinen Eingängen
5 und 6 und dem zusätzlichen Stecker 7 in Figur 2
im Detail gezeigt. Der Ausgang 8 des Zwischensteckers 4
wird direkt auf den Magneten 1 gesteckt und an diesem
über eine Schraube 9 befestigt. Die Schraube 9 ist in der
Figur 1 in der Draufsicht zu sehen. Im Inneren des Zwischensteckers
4 sind die notwendigen elektrischen Verbindungen
durch Crimpen oder Löten hergestellt, wobei die
weiteren, in der Figur dargestellten Details für den erfindungsgemäßen
Aufbau nicht wesentlich sind.The
Ein elektrisches Ersatzschaltbild der erfindungsgemäßen
Sicherheitsschaltung ist in Figur 3 gezeigt, wobei die
Ansteuerleitung für den Magneten 1 zwischen dem Anschlusspunkt
10 und dem Anschlusspunkt 11 des Eingangs 6 mittels
eines Sicherheitsschalters 12 durchschaltbar bzw.
trennbar ist. Durch das Aufstecken des zusätzlichen Stekkers
7 kann somit ein Sicherheitsschalter 12 mit einer
jeweils für den Anwendungsfall ausgewählten Auslösefunktion
einfach an die vorhandene Anordnung über den Zwischenstecker
4 angeschaltet werden. An electrical equivalent circuit diagram of the invention
Safety circuit is shown in Figure 3, the
Control line for magnet 1 between the
Zwischen dem einen Pol 13 des Anschlusses des Magneten 1
am Ausgang S und dem andern Pol 14 ist als Schutz vor
störenden Spannungsspitzen bei den Schaltvorgängen eine
Transzorb-Diode 15 angeordnet. Der Anschlusspunkt 16
stellt den Masseanschluss dar.Between the one
Bei einem zweiten Ausführungsbeispiel nach Figur 4 ist
ein Zwischenstecker 17 in Abwandlung zum Ausführungsbeispiel
nach Figur 1 mit rechtwinklig zueinander angeordneten
Eingängen 5 und 6 gezeigt. Der Stecker 7, über den
der Sicherheitsschalter 12 angeschlossen wird, ist hierbei
in Längsrichtung des Magneten 1 eingesteckt.In a second embodiment according to Figure 4
an
Die Darstellung nach Figur 5 zeigt verschiedene Ansichten
des Zwischensteckers 17 mit rechtwinklig zueinander liegenden
Eingängen 5 und 6 nach der Figur 4, wobei hier auf
die Erläuterungen zu Figur 2 verwiesen wird.The illustration according to FIG. 5 shows different views
of the
Aus dem Ersatzschaltbild nach Figur 6 sind die im Vergleich
zum Ersatzschaltbild nach Figur 3 unterschiedlichen
geometrischen Ausrichtungen der Eingänge 5 und 6 erkennbar,
wobei die Ersatzschaltbilder jedoch funktionsgleich
sind.From the equivalent circuit diagram according to FIG. 6, they are compared
to the equivalent circuit diagram of Figure 3 different
geometrical orientations of the
Claims (5)
- Protective circuit for an electric actuator, which is in the form of a magnet for fluidic open-loop and closed-loop control systems, having an additional switching function for driving the electric actuator, characterized in that the drive signals for the actuator (1) are fed between a first detachable plug-in connection (2) and the actuator within a housing via a further detachable plug-in connection such that a safety switch (12) can be inserted into the drive circuit of the actuator (1) via the second detachable plug-in connection, and with which protective circuit an additional adapter plug (4; 17) having two inputs (5, 6) can be plugged onto the first plug-in connection (2), one input (5) forming the first plug-in connection for the drive signals and the other input (6) forming the second plug-in connection for the safety switch (12), whilst an output (8) leads to the actuator (1) such that the adapter plug (4; 17) has plug-in connections (5, 6, 8) on three sides.
- Protective circuit according to Claim 1, characterized in that the second input (6) for the safety switch (12) is bent back at a right angle to the plug-in connection (8), which leads to the actuator (1).
- Protective circuit according to Claim 1 or 2, characterized in that the drive signals are fed via the safety switch (12) which is connected in series in the drive circuit.
- Protective circuit according to one of Claims 1 to 3, characterized in that, in the additional adapter plug (4; 17), the poles (13, 14), of the drive line, to which the actuator (1) can be connected, are protected by a transzorb diode (15).
- Protective circuit according to one of the preceding claims, characterized in that the actuator is a magnet for hydraulic open-loop and closed-loop control systems in motor vehicles.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19738637 | 1997-09-04 | ||
DE19738637A DE19738637A1 (en) | 1997-09-04 | 1997-09-04 | Safety circuit |
PCT/DE1998/000803 WO1999011939A1 (en) | 1997-09-04 | 1998-03-19 | Protective circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1009937A1 EP1009937A1 (en) | 2000-06-21 |
EP1009937B1 true EP1009937B1 (en) | 2004-06-02 |
Family
ID=7841156
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98924022A Expired - Lifetime EP1009937B1 (en) | 1997-09-04 | 1998-03-19 | Protective circuit |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP1009937B1 (en) |
JP (1) | JP4157273B2 (en) |
KR (1) | KR100530687B1 (en) |
CN (1) | CN1130504C (en) |
AT (1) | ATE268437T1 (en) |
DE (2) | DE19738637A1 (en) |
TW (1) | TW461152B (en) |
WO (1) | WO1999011939A1 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4150264A (en) * | 1978-05-02 | 1979-04-17 | Gilbert Products Incorporated | Remotely controlled electric switch |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3340467C2 (en) * | 1983-11-09 | 1986-04-03 | Herbert 8883 Gundelfingen Denk | Device for supplying pressure medium to a hydraulic motor |
DE19515640B4 (en) * | 1995-04-28 | 2004-04-08 | Bosch Rexroth Ag | Circuit arrangement for the electrical control of a fluidic valve |
-
1997
- 1997-09-04 DE DE19738637A patent/DE19738637A1/en not_active Withdrawn
-
1998
- 1998-03-19 JP JP2000508915A patent/JP4157273B2/en not_active Expired - Fee Related
- 1998-03-19 EP EP98924022A patent/EP1009937B1/en not_active Expired - Lifetime
- 1998-03-19 CN CN98808881A patent/CN1130504C/en not_active Expired - Fee Related
- 1998-03-19 WO PCT/DE1998/000803 patent/WO1999011939A1/en active IP Right Grant
- 1998-03-19 DE DE59811516T patent/DE59811516D1/en not_active Expired - Lifetime
- 1998-03-19 AT AT98924022T patent/ATE268437T1/en not_active IP Right Cessation
- 1998-03-19 KR KR10-2000-7002119A patent/KR100530687B1/en not_active IP Right Cessation
- 1998-04-14 TW TW087105605A patent/TW461152B/en not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4150264A (en) * | 1978-05-02 | 1979-04-17 | Gilbert Products Incorporated | Remotely controlled electric switch |
Also Published As
Publication number | Publication date |
---|---|
KR20010023474A (en) | 2001-03-26 |
JP4157273B2 (en) | 2008-10-01 |
TW461152B (en) | 2001-10-21 |
DE19738637A1 (en) | 1999-03-11 |
KR100530687B1 (en) | 2005-11-24 |
WO1999011939A1 (en) | 1999-03-11 |
JP2001515257A (en) | 2001-09-18 |
ATE268437T1 (en) | 2004-06-15 |
CN1269873A (en) | 2000-10-11 |
EP1009937A1 (en) | 2000-06-21 |
DE59811516D1 (en) | 2004-07-08 |
CN1130504C (en) | 2003-12-10 |
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