DE690326C - Limit shutdown for DC motors with rectifiers in the motor circuit - Google Patents
Limit shutdown for DC motors with rectifiers in the motor circuitInfo
- Publication number
- DE690326C DE690326C DE1936K0142783 DEK0142783D DE690326C DE 690326 C DE690326 C DE 690326C DE 1936K0142783 DE1936K0142783 DE 1936K0142783 DE K0142783 D DEK0142783 D DE K0142783D DE 690326 C DE690326 C DE 690326C
- Authority
- DE
- Germany
- Prior art keywords
- motor
- circuit
- limit switch
- rectifier
- short
- 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
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
- H02P3/18—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor
- H02P3/20—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor by reversal of phase sequence of connections to the motor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Stopping Of Electric Motors (AREA)
Description
Endabschaltung für Gleichstrommotoren mit Gleichrichtern im Motorstromkreis Die Erfindung bezieht sich auf solche- Anordnungen zur Endabschaltung von Gleichstrommotoren, bei denen nach der durch den Endschalter bewirkten Abschaltung des Motors ein Stromweg für den Weiterlauf des Motors durch -einen Gleichrichter gesperrt, für den Rücklauf des Motors dagegen freigegeben wird. Die Erfindung bezweckt, die Anordnungen dieser Art dahin zu vervollkommnen, daß bei der durch den Endschalter bewirkten Abschaltung des Motors eine Kurzschlußbremsung erfolgt, so daß unzulässige Ungenauigkeiten bei der Einstellung der durch den Motor betriebenen Vorrichtung vermieden werden.Limit switch-off for DC motors with rectifiers in the motor circuit The invention relates to such arrangements for the final shutdown of DC motors, in which there is a current path after the motor has been switched off by the limit switch blocked by a rectifier for the continued running of the motor, for the reverse run the motor is released, however. The invention aims the arrangements of these Kind to perfect that with the shutdown caused by the limit switch the motor is short-circuit braking, so that impermissible inaccuracies in the adjustment of the device operated by the motor can be avoided.
In Abb. i und 2 sind Ausführungsbeispiele der Erfindung dargestellt.In Fig. I and 2 embodiments of the invention are shown.
In der in Abb. i angegebenen Schaltung ist a die Spannungsquelle, an die der Anker des Motors b gelegt ist. Der Endschalter c nimmt zunächst die Stellung ein, bei der die ausgezogen gezeichneten Strom- und Spannungsverhältnisse bestehen. Wenn die angetriebene Vorrichtung ihre eine Endstellung erreicht, so wird der Endschalter c aus der ausgezogenen in die gestrichelt dargestellte Lage verstellt. Der Generatorstrom f ist dann durch den Gleichrichter d gesperrt, der gestrichelte Ankerkurzschlußstrom g dagegen kann durch einen weiteren Gleichrichter e fließen, so daß der Motor augenblicklich abgebremst wird.In the circuit given in Fig. I, a is the voltage source, to which the armature of the motor b is placed. The limit switch c first takes the position where the current and voltage ratios shown in solid lines exist. When the driven device reaches its one end position, the limit switch becomes c moved from the extended position to the position shown in dashed lines. The generator current f is then blocked by the rectifier d, the dashed armature short-circuit current g, on the other hand, can flow through another rectifier e, so that the motor instantaneously is braked.
Wird die Spannung umgekehrt, so kann der rückdrehende Strom h durch den Gleichrichter d fließen; die Überbrückung des Ankers durch den weiteren Gleichrichter e ist für diesen Strom ein sehr hoher Widerstand, so daß der Stromverlust durch den Parallelweg fast Null ist.If the voltage is reversed, the reversing current h can through the rectifier d flow; the bridging of the armature by the additional rectifier e is a very high resistance for this current, so that the current loss is through the parallel path is almost zero.
Für große Motoren ist die Zwischenschaltung eines Schützes entsprechend der Anordnung nach Abb. ä zweckmäßig. In dieser Schaltung wird beim Schließen des Endschalters z die Schützspule k erregt. Der elektromagnetische Umschalter schaltet den Motor b ab und macht zugleich Ankerkurzschluß. Dabei wird selbsttätig die eine Erregerspulek ab- und die andere l eingeschaltet. Wird nun die Spannung umgekehrt,. so wird die Spule l erregt, der Motor wird wieder eingeschaltet und läuft aus der Endstellung heraus im entgegengesetzten Sinne an.The interconnection of a contactor is appropriate for large motors the arrangement according to Fig. In this circuit, when the Limit switch z energizes the contactor coil k. The electromagnetic switch switches the motor b and makes the armature short circuit at the same time. In doing so, the one Excitation coil off and the other l on. If the voltage is now reversed. so the coil 1 is energized, the motor is switched on again and runs off End position out in the opposite sense.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1936K0142783 DE690326C (en) | 1936-06-30 | 1936-06-30 | Limit shutdown for DC motors with rectifiers in the motor circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1936K0142783 DE690326C (en) | 1936-06-30 | 1936-06-30 | Limit shutdown for DC motors with rectifiers in the motor circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
DE690326C true DE690326C (en) | 1940-04-22 |
Family
ID=7250265
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1936K0142783 Expired DE690326C (en) | 1936-06-30 | 1936-06-30 | Limit shutdown for DC motors with rectifiers in the motor circuit |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE690326C (en) |
-
1936
- 1936-06-30 DE DE1936K0142783 patent/DE690326C/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE690326C (en) | Limit shutdown for DC motors with rectifiers in the motor circuit | |
DE550061C (en) | Device for the rapid de-energization of electrical power generators | |
DE608890C (en) | Current monitor circuit for motor-driven switchgear controls of electrically driven vehicles with several motors or motor groups working in parallel | |
DE430289C (en) | Limit switch for electric hoists | |
DE680705C (en) | Drive for railway safety devices | |
DE575005C (en) | Protection arrangement for compound motors | |
DE370313C (en) | Device for the automatic shutdown of a motor if a phase fails in multi-phase | |
DE685669C (en) | Control for electrically operated vehicles | |
DE706458C (en) | Single phase induction motor | |
DE546961C (en) | Blocking circuit for DC reverse contactors | |
DE604537C (en) | Device for avoiding impermissible current surges in electric vehicles operated with different voltages | |
DE659486C (en) | Switching device for electric drives in which individual starting stages are also used as regenerative braking stages without changing the circuit | |
DE710386C (en) | Circuit arrangement for braking AC motors with direct current | |
DE408605C (en) | Arrangement for switching off circuits with self-induction | |
AT95974B (en) | Armature for induction motors. | |
DE733699C (en) | Device for controlling regulating transformers | |
DE622893C (en) | Method for automatic asynchronous starting of electrical synchronous machines | |
DE661125C (en) | Switching arrangement for the optional disconnection of lamp circuits that are connected in parallel to two direct current supply lines | |
DE417025C (en) | Arrangement for reversing the polarity of electric motors | |
DE377418C (en) | Switching device for parallel connection of two voltage sources with different fluctuations | |
DE475296C (en) | Arrangement for selective shutdown of units working in parallel | |
AT49079B (en) | Device for changing the basic voltage of starting machines. | |
DE617474C (en) | Three-phase reverse control | |
DE641198C (en) | Circuit arrangement for starting self-excited inverters | |
DE405914C (en) | Switching device for the operation of vehicles with several voltages |