DE4112109A1 - Broken wire indicator e.g. in thyristor feed line - has combination of and/or and retriggerable monostable elements monitoring test signal and driving switching block or warning device - Google Patents

Broken wire indicator e.g. in thyristor feed line - has combination of and/or and retriggerable monostable elements monitoring test signal and driving switching block or warning device

Info

Publication number
DE4112109A1
DE4112109A1 DE4112109A DE4112109A DE4112109A1 DE 4112109 A1 DE4112109 A1 DE 4112109A1 DE 4112109 A DE4112109 A DE 4112109A DE 4112109 A DE4112109 A DE 4112109A DE 4112109 A1 DE4112109 A1 DE 4112109A1
Authority
DE
Germany
Prior art keywords
thyristor
gate
switching block
retriggerable monostable
warning device
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.)
Granted
Application number
DE4112109A
Other languages
German (de)
Other versions
DE4112109C2 (en
Inventor
Klaus Dipl Ing Mittag
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alstom Anlagen und Automatisierungstechnik GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to DE4112109A priority Critical patent/DE4112109A1/en
Publication of DE4112109A1 publication Critical patent/DE4112109A1/en
Application granted granted Critical
Publication of DE4112109C2 publication Critical patent/DE4112109C2/de
Granted legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/54Testing for continuity
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/52Testing for short-circuits, leakage current or ground faults

Abstract

The arrangement indicates a broken wire, e.g. in thyristor or thyristor bridge feeder leads, and feeds the monitored signal via an OR element (2) to a switching block, via a retriggerable monostable (3) to the inverse input of an AND element (4) and directly to the second AND input. The AND element output is passed via a second retriggerable monostable (5) with inverse input to the inverting input of a further AND element (6) and directly to its second inverse input. The second AND element's output is connected to the OR element and to a warning device via a further OR element (7). USE/ADVANTAGE - For detecting broken wires in thyristor feeders or failure of optical couplers (1) for potential isolation in d.c. drives. Reliably indicates faults or triggers switching block.

Description

Die Erfindung betrifft eine Anordnung zur Meldung eines Drahtbruchs nach dem Oberbegriff des Patentanspruchs.The invention relates to an arrangement for reporting a wire break according to the preamble of the claim.

Bei Gleichstromantrieben, bei denen Thyristorbrücken angewendet wer­ den, ist es notwendig zu gewährleisten, daß die Thyristoren genau für die vorgesehene Zeit und in der richtigen Reihenfolge Strom füh­ ren bzw. stromlos sind. Ein Drahtbruch an einer der Zuleitungen zu den Thyristoranschlüssen führt zu einer Störung, die unverzüglich zu melden ist. Das gilt auch für den Ausfall des Kopplungsgliedes zur Potentialtrennung zwischen dem Gleichstromantrieb und der Thyristor­ brücke. Als Kopplungsglied wird vorzugsweise ein Optokoppler verwen­ det.For DC drives where thyristor bridges are used that, it is necessary to ensure that the thyristors are accurate for the scheduled time and in the correct order Ren or are de-energized. A broken wire on one of the supply lines too the thyristor leads to a fault that immediately leads to is to report. This also applies to the failure of the coupling link Electrical isolation between the DC drive and the thyristor bridge. An optocoupler is preferably used as the coupling element det.

Die Aufgabe besteht daher darin, eine Anordnung zur Meldung eines Drahtbruchs in den Zuleitungen von Thyristoren einer Thyristorbrücke bzw. des Ausfalls eines Optokopplers zur Potentialtrennung in Gleich­ stromantrieben zu schaffen, die eine sichere Erkennung eines Störzu­ standes ermöglicht bzw. eine Umschaltsperre auslöst.The task is therefore to create an arrangement for reporting a Wire break in the leads of thyristors of a thyristor bridge or the failure of an optocoupler for potential isolation in the same to create electric drives that reliably detect a fault enabled or triggers a switchover lock.

Die Aufgabe wird nach der Erfindung durch die im Patentanspruch ange­ gebenen Maßnahmen gelöst. The object is according to the invention by the in claim given measures resolved.  

Die Erfindung wird im folgenden an Hand der Zeichnung an einem Aus­ führungsbeispiel näher erläutert.The invention is based on the drawing of an off management example explained in more detail.

Aus Fig. 1 ist das Schaltbild der Anordnung nach der Erfindung zu er­ sehen. Von einem Optokoppler 1 werden Signale, deren Dauer und Form in der Fig. 2 in Zeile A dargestellt sind, eingespeist. Sie werden direkt einem ODER-Glied 2 zugeleitet, das mit einer nicht dargestell­ ten Umschaltsperreinrichtung verbunden ist.From Fig. 1 the circuit diagram of the arrangement according to the invention can be seen. Signals, the duration and shape of which are shown in line A in FIG. 2, are fed in by an optocoupler 1 . You are fed directly to an OR gate 2 , which is connected to a switching lock device, not shown.

Gleichzeitig werden die Signale an eine beispielsweise auf 50 µs einge­ stellte retriggerbare monostabile Kippstufe 3 und von dieser an den inversen Eingang eines UND-Gliedes 4 geleitet. An einem zweiten Ein­ gang dieses UND-Gliedes 4 liegen die Signale direkt an. Vom UND-Glied 4 werden dann Signale abgegeben, die bezüglich Zeitpunkt und Dauer denen in Fig. 2, Zeile B entsprechen.At the same time, the signals are sent to a retriggerable monostable multivibrator 3, for example set to 50 microseconds, and from there to the inverse input of an AND gate 4 . The signals are directly present at a second input of this AND gate 4 . The AND gate 4 then emits signals which correspond to those in FIG. 2, line B in terms of time and duration.

Die Signale gemäß Zeile B werden an einen inversen Eingang einer weiteren retriggerbaren monostabilen Kippstufe 5 gegeben, die bei­ spielsweise auf 10 µs eingestellt ist, die sie zu Signalen gemäß Fig. 2, Zeile C umformt. An einem weiteren UND-Glied 6 kommen an je einem in­ versen Eingang die Signale gemäß Fig. 2, Zeile B und Fig. 2, Zeile C an.The signals according to line B are given to an inverse input of a further retriggerable monostable multivibrator 5 , which is set at 10 μs for example, which it converts into signals according to FIG. 2, line C. The signals according to FIG. 2, line B and FIG. 2, line C arrive at a further AND gate 6 at a respective input in the opposite direction.

Das UND-Glied 6 ist mit dem ODER-Glied 2 und einem weiteren ODER-Glied 7 verbunden und leitet diesen beiden ODER-Gliedern Signale zu gemäß Fig. 2, Zeile D. Das ODER-Glied 7, das auch die Signale von den ande­ ren Thyristoren der Thyristorbrücke erhält, ist mit einer nicht dar­ gestellten Meldeeinrichtung verbunden, die gegebenenfalls einen Draht­ bruch oder den Ausfall des Optokopplers 1 anzeigt. Vom ODER-Glied 2 wird ein Signal gemäß Fig. 2, Zeile E an die Umschaltsperreinrichtung gegeben, das entweder aus dem Signal gemäß Fig. 2, Zeile A oder dem Signal gemäß Fig. 2, Zeile D abgeleitet ist.The AND gate 6 is connected to the OR gate 2 and a further OR gate 7 and passes signals to these two OR gates according to FIG. 2, line D. The OR gate 7 , which also the signals from the others Ren thyristors the thyristor bridge receives is connected to a not shown signaling device, which may break a wire or indicates the failure of the optocoupler 1 . A signal according to FIG. 2, line E is sent from the OR gate 2 to the switch-over blocking device, which is derived either from the signal according to FIG. 2, line A or the signal according to FIG. 2, line D.

Der Vorteil der Anordnung nach der Erfindung besteht darin, daß ein Drahtbruch oder der Ausfall des Kopplungsgliedes zur Potentialtrennung sicher und unverzüglich angezeigt wird.The advantage of the arrangement according to the invention is that a Broken wire or failure of the coupling element for electrical isolation is displayed safely and immediately.

Claims (1)

Anordnung zur Meldung eines Drahtbruchs in den Zuleitungen von Thyristoren einer Thyristorbrücke bzw. des Ausfalls eines Opto­ kopplers zur Potentialtrennung in Gleichstromantrieben, dadurch gekennzeichnet, daß die aus der Anoden-Kathodenüberwachung der Thyristoren bzw. von einem Optokoppler (1) stammenden Signale einerseits über ein ODER- Glied (2) einer Umschaltsperreinrichtung, andererseits sowohl über eine retriggerbare, monostabile Kippstufe (3) an den inversen Eingang eines UND-Glieds (4) als auch direkt an den zweiten Eingang des UND- Glieds (4), sowie von diesem sowohl über ein weitere retriggerbare monostabile Kippstufe (5) mit inversem Eingang an einen inversen Eingang eines weiteren UND-Gliedes (6) als auch an einen zweiten inversen Eingang dieses UND-Glieds (6) geführt sind, von dem sie auf das ODER-Glied (2) und über ein weiteres ODER-Glied (7) an eine Meldeeinrichtung geschaltet sind.Arrangement for reporting a wire break in the supply lines of thyristors of a thyristor bridge or the failure of an optocoupler for electrical isolation in DC drives, characterized in that the signals originating from the anode-cathode monitoring of the thyristors or from an optocoupler ( 1 ) are transmitted via an OR - Link ( 2 ) of a switch-over device, on the other hand both via a retriggerable, monostable multivibrator ( 3 ) to the inverse input of an AND gate ( 4 ) and directly to the second input of the AND gate ( 4 ), as well as from this both a further retriggerable monostable multivibrator ( 5 ) with an inverse input to an inverse input of a further AND gate ( 6 ) and also to a second inverse input of this AND gate ( 6 ), from which they are connected to the OR gate ( 2 ) and are connected to a signaling device via a further OR gate ( 7 ).
DE4112109A 1991-04-11 1991-04-11 Broken wire indicator e.g. in thyristor feed line - has combination of and/or and retriggerable monostable elements monitoring test signal and driving switching block or warning device Granted DE4112109A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4112109A DE4112109A1 (en) 1991-04-11 1991-04-11 Broken wire indicator e.g. in thyristor feed line - has combination of and/or and retriggerable monostable elements monitoring test signal and driving switching block or warning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4112109A DE4112109A1 (en) 1991-04-11 1991-04-11 Broken wire indicator e.g. in thyristor feed line - has combination of and/or and retriggerable monostable elements monitoring test signal and driving switching block or warning device

Publications (2)

Publication Number Publication Date
DE4112109A1 true DE4112109A1 (en) 1992-10-15
DE4112109C2 DE4112109C2 (en) 1993-01-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE4112109A Granted DE4112109A1 (en) 1991-04-11 1991-04-11 Broken wire indicator e.g. in thyristor feed line - has combination of and/or and retriggerable monostable elements monitoring test signal and driving switching block or warning device

Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29505412U1 (en) * 1995-03-30 1996-05-02 Siemens Ag Device for electrically isolated cable break detection in digital transmission links with symmetrical transmission, in particular for digital position transducers

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3906304A1 (en) * 1989-02-28 1990-08-30 Siemens Ag Device for digitally monitoring feed lines

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3906304A1 (en) * 1989-02-28 1990-08-30 Siemens Ag Device for digitally monitoring feed lines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29505412U1 (en) * 1995-03-30 1996-05-02 Siemens Ag Device for electrically isolated cable break detection in digital transmission links with symmetrical transmission, in particular for digital position transducers

Also Published As

Publication number Publication date
DE4112109C2 (en) 1993-01-28

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D2 Grant after examination
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Owner name: CEGELEC AEG ANLAGEN UND ANTRIEBSSYSTEME GMBH, 1227

8339 Ceased/non-payment of the annual fee