DE2826227A1 - Cut=out circuit for motor operating window or roof in vehicle - pulses motor when overload occurs and disconnects permanently after given number of pulses - Google Patents
Cut=out circuit for motor operating window or roof in vehicle - pulses motor when overload occurs and disconnects permanently after given number of pulsesInfo
- Publication number
- DE2826227A1 DE2826227A1 DE19782826227 DE2826227A DE2826227A1 DE 2826227 A1 DE2826227 A1 DE 2826227A1 DE 19782826227 DE19782826227 DE 19782826227 DE 2826227 A DE2826227 A DE 2826227A DE 2826227 A1 DE2826227 A1 DE 2826227A1
- Authority
- DE
- Germany
- Prior art keywords
- motor
- pulses
- cut
- permanently
- out circuit
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
- H02H7/0851—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load for motors actuating a movable member between two end positions, e.g. detecting an end position or obstruction by overload signal
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/0833—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for electric motors with control arrangements
- H02H7/0838—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for electric motors with control arrangements with H-bridge circuit
Landscapes
- Stopping Of Electric Motors (AREA)
Abstract
Description
Detlev Noeske - Abschaltautomatik fiir Elektromo tore -Detlev Noeske - Automatic switch-off for electric motors -
Beschreibung Blatt 1 Die Erfindung bezieht sich auf eine Anordnung zun selbsttätigen Abschalten eines Elektromotors beim Auftreten störender Lastmomentänderungen an der Triebwelle, insbesondere für elektrische Schiebedächer und Fensterheber in Kraftfahrzeugen.Description of sheet 1 The invention relates to an arrangement to automatic shutdown of an electric motor when disturbing load torque changes occur on the drive shaft, especially for electric sunroofs and window regulators in Motor vehicles.
iei derartigen Geräten ist in der hegel eine selbsttätige Endlagenabschaltung bzw. Abschaltung bei Überlast zur Schonung der Antriebsquelle erforderlich.iei such devices is usually an automatic end position switch-off or shutdown in the event of an overload to protect the drive source.
Die Firma Engelmann in 3002 Wedemark löste diese Aufgabe bei ihren Machrüstfensterhebern durch Einfügen einer Rutschkupplung in die Drehmomentübertragung. Grundsätzlich wäre eine Lösung nach DS-AS 1463602 ebenfalls möglich.The Engelmann company in 3002 Wedemark solved this problem for their own Make up window regulators by inserting a slip clutch in the torque transmission. In principle, a solution according to DS-AS 1463602 would also be possible.
Aumerdem läßt sich die gestellte Aufgabe durch Anbringen von Endschaltern lösen.In addition, the task at hand can be achieved by attaching limit switches to solve.
Bei den oben genannten lösungen ergeben sich z.T. erhebliche Nachteile durch Verwendung mechanischer Anordnungen, die einerseits hohem Verschleiß unterworfen sind, andererseits eine gro@e Anzahl unterschiedlich dimensionierter Schalter f@r verschiedene Anwendungsfälle erfordern.Some of the above solutions have considerable disadvantages through the use of mechanical arrangements, which on the one hand are subject to high levels of wear are, on the other hand, a large number of differently dimensioned switches for require different use cases.
Der Erfindung liegt die Aufgabe zugrunde, eine von den geometrischen Gegebenheiten unabhängige Anordnung zur Überwachung von Flektromotoen zu erstellen. Diese Aufgabe wird erfindungsmäßig dadurch gelöst, daß bei längerem Ansprechen einer Strombegrenzung die Stromzufuhr gänzlich abgeschaltet wird.The invention is based on the object of one of the geometric To create an arrangement for monitoring flektromotoen that is independent of the circumstances. According to the invention, this object is achieved in that, if the response is prolonged, a Current limitation the power supply is completely switched off.
Hierzu ist es notwendig,den Motor über einen Transistor mit Stron zu versorgen, welcher je nach Induktivität des Motors etwa 0,1 - 10 Millisekunden gesperrt wird, sobald der Emitterstrom einen eingestellten Grenzwert erreicht. Detlev Noeske - Abschaltautomatik für Elektromotore -Beschreibung Blatt 2 Sobald die derart erzeugte Strombegrenzung hinreichend lange angesprochen hat, wird der Transistor gänzlich gesperrt. Dieser Transistor besteht aus mehreren Einzeltransistoren, deren Kollektoren, Emitter und Basen miteinander verbunden sind. Der Motorstrom wird als Spannungsabfall am Emitterwiderstand ermittelt und mit einer Referenzspannung, die der Versorgungsspannung proportional ist, verglichen.For this it is necessary to power the motor through a transistor to supply, which, depending on the inductance of the motor, is about 0.1-10 milliseconds is blocked as soon as the emitter current reaches a set limit value. Detlev Noeske - automatic switch-off for electric motors -description sheet 2 As soon as the such generated current limit has responded for a long enough time, the transistor completely blocked. This transistor consists of several individual transistors, whose Collectors, emitters and bases are interconnected. The motor current is shown as Voltage drop across the emitter resistor is determined and with a reference voltage that the supply voltage is proportional, compared.
Daher spricht die Strombegrenzung bei etwas höheren Versorgungsspannungen auch erst bei etwas größeren Strömen an.Therefore, the current limitation speaks at slightly higher supply voltages also only with somewhat larger currents.
Durch ein zusätzliches Zeitglied wird die Gesamteinschaltdauer des Transistors auf einen zulässigen Höchstwert begrenzt.The total on-time of the Transistor limited to a permissible maximum value.
Die mit der Erfindung erzielten Vorteile bestehen insbesondere darin, daß in Endlagen, bei Überlast und bei Nichterreichen des Ansprechwertes der Strombegrenzung eine Abschaltung gewährleistet ist. Weiterhin läßt sich die Anordnung durch einfaches Einstellen eines Potentiometers einer großen Anzahl unterschiedlich dimensionierter Stellantriebe anpassen. Außerdem entfällt bei dieser Anordnung bis auf die Bedienungsschalter jeglicher mechanische Verschleiß. Schließlich macht die Parallelschaltung der sich im Motorstromkreis befindlichen Transistoren die Verwendung jeglicher Kühlkörper überflüssig.The advantages achieved with the invention are in particular: that in end positions, in the event of overload and if the response value of the current limitation is not reached a shutdown is guaranteed. Furthermore, the arrangement can be simply Setting a potentiometer of a large number of different dimensions Adjust actuators. In addition, this arrangement does not apply to the control switch any mechanical wear. After all, the parallel connection makes the itself transistors in the motor circuit prevent the use of any heat sinks superfluous.
Din>Ausführungsbeispiel ist in den Zeichnungen dargestellt.Din> embodiment is shown in the drawings.
Fig. 1 und Fig. 2 zeigen zwei Varianten des Starkstromteils der Schaltung. In Fig. 2 fließt der Motorstrom durch die Bedienungsschalter, während in Fig. 1 diese nur durch den Steuerstrom belastet werden. In beiden Varianten werden je fünf Transistoren der Typen BD 433 bzw. BD 434 im Motorstromkreis parallel geschaltet.Fig. 1 and Fig. 2 show two variants of the power part of the circuit. In FIG. 2, the motor current flows through the operating switch, while in FIG these are only loaded by the control current. In both variants there are five Type BD 433 or BD 434 transistors connected in parallel in the motor circuit.
@etiev @oeske - Abschaltautomatik für Elekromotore -beschreibung Blatt 3 @@ beträgt die Kollektor - Emitterspannung bei 10 Ampere Kollektor- und 0,25 Ampere Basisstrom nur ca. 0,25 Volt.@etiev @oeske - automatic switch-off for electric motors -description sheet 3 @@ is the collector - emitter voltage at 10 amps collector and 0.25 amps Base current only approx. 0.25 volts.
Fig. @ zeigt die zugehörige Steuerschaltung. An den Anschlüssen liegt die dem Motorstrom proportionale Spannung U1. Fig. @ Shows the associated control circuit. At the connections is the voltage U1 proportional to the motor current.
Die wird vom Komperator K1 mit der Referenzspannung U2 am Schieifer von P1 verglichen. Die Spannung U2 ist der Versorgungsspannung proportional. Hierdurch wird erreicht, daß auch bei etriebsspannungsänderungen zwischen freiem und behindertem Lauf unterschieden wird. Wenn U1 U2 überschreitet, kippt der Ausgang von K1 auf das negative Versorgungsspannungspotential und trigger dadurch das Monoflop ICi (555), welches daraufhin die Motorstromtransistoren für eine gemäß R2 und C2 eingestellte Zeit sperrt. Für die gleiche Zeit wird CI irer R3 geladen. Kippt IC1 zurück und gibt damit die Moto rstromtransistoren frei, so muß einige Zeit vergehen, bis der inzwischen abgesunkene Motorstrom den alten Grenzwert wieder erreicht und damit den Vorgang von Neuem einleitet.This is done by the comparator K1 with the reference voltage U2 on the slider compared by P1. The voltage U2 is proportional to the supply voltage. Through this it is achieved that even when the operating voltage changes between free and disabled Run is differentiated. If U1 exceeds U2, the output of K1 flips open the negative supply voltage potential and thereby trigger the monoflop ICi (555), which thereupon the motor current transistors for a set according to R2 and C2 Time locks. For the same time, CI is loaded in R3. Tilts IC1 back and is so that the Moto rstromtransistorsen free, some time must pass before the The motor current that has since fallen has reached the old limit value again and thus initiates the process anew.
1 wird außer wie oben beschrieben, auch noch über R4 augeladen. Hat die Spannung an diesem Kondensator die halbe Betriebsspannung erreicht, wird IC1 über den Komperator K2 permanent getriggert. Dies tritt nach einer Zeit ein, in der der Motor von der einen Endstellung in die andere gelaufen sein sollte. Ilierdurch wird der Motor auch dann sicher abgeschaltet, wenn der Motorstrom den eingestellten Grenzwert nicht erreichen sollte. Über D5 und R5 wird die Anordnung nach Zurückschalten des Drehrichtungswahlschalters in die Grundstellung zurückgesetzt.1 is not only loaded as described above, but also via R4. Has the voltage on this capacitor reaches half the operating voltage, becomes IC1 triggered permanently via the comparator K2. This occurs after a time in that the motor should have run from one end position to the other. Ilier through the motor is switched off safely even if the motor current exceeds the set Limit should not reach. The arrangement is changed via D5 and R5 after switching back of the direction of rotation switch is reset to the basic position.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782826227 DE2826227A1 (en) | 1978-06-15 | 1978-06-15 | Cut=out circuit for motor operating window or roof in vehicle - pulses motor when overload occurs and disconnects permanently after given number of pulses |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782826227 DE2826227A1 (en) | 1978-06-15 | 1978-06-15 | Cut=out circuit for motor operating window or roof in vehicle - pulses motor when overload occurs and disconnects permanently after given number of pulses |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2826227A1 true DE2826227A1 (en) | 1979-12-20 |
Family
ID=6041854
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19782826227 Withdrawn DE2826227A1 (en) | 1978-06-15 | 1978-06-15 | Cut=out circuit for motor operating window or roof in vehicle - pulses motor when overload occurs and disconnects permanently after given number of pulses |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2826227A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3048989A1 (en) * | 1980-12-24 | 1982-07-15 | SWF-Spezialfabrik für Autozubehör Gustav Rau GmbH, 7120 Bietigheim-Bissingen | Drive circuit for bidirectional motor - is for side window of vehicle and has safety relay and fault monitor |
DE3233203A1 (en) * | 1981-09-17 | 1983-03-31 | Elin-Union Aktiengesellschaft für elektrische Industrie, 1141 Wien | Protection relay for electrical machines |
DE3519472A1 (en) * | 1984-07-03 | 1986-01-16 | Keiper Recaro GmbH & Co, 5630 Remscheid | Protection circuit |
WO2008061605A1 (en) * | 2006-11-21 | 2008-05-29 | Hans-Pater Barthelt | Fail-proof control for hospital beds |
-
1978
- 1978-06-15 DE DE19782826227 patent/DE2826227A1/en not_active Withdrawn
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3048989A1 (en) * | 1980-12-24 | 1982-07-15 | SWF-Spezialfabrik für Autozubehör Gustav Rau GmbH, 7120 Bietigheim-Bissingen | Drive circuit for bidirectional motor - is for side window of vehicle and has safety relay and fault monitor |
DE3233203A1 (en) * | 1981-09-17 | 1983-03-31 | Elin-Union Aktiengesellschaft für elektrische Industrie, 1141 Wien | Protection relay for electrical machines |
DE3519472A1 (en) * | 1984-07-03 | 1986-01-16 | Keiper Recaro GmbH & Co, 5630 Remscheid | Protection circuit |
WO2008061605A1 (en) * | 2006-11-21 | 2008-05-29 | Hans-Pater Barthelt | Fail-proof control for hospital beds |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OGA | New person/name/address of the applicant | ||
8127 | New person/name/address of the applicant |
Owner name: NOESKE, DETLEV, 4512 WALLENHORST, DE |
|
8139 | Disposal/non-payment of the annual fee |