GB1091067A - A circuit arrangement for automatically disconnecting an asyncbronous electric motor - Google Patents

A circuit arrangement for automatically disconnecting an asyncbronous electric motor

Info

Publication number
GB1091067A
GB1091067A GB14798/66A GB1479866A GB1091067A GB 1091067 A GB1091067 A GB 1091067A GB 14798/66 A GB14798/66 A GB 14798/66A GB 1479866 A GB1479866 A GB 1479866A GB 1091067 A GB1091067 A GB 1091067A
Authority
GB
United Kingdom
Prior art keywords
motor
value
relay
time
current
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
Application number
GB14798/66A
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.)
ZD Y PRESNEHO STROJIRENSTVI GO
Original Assignee
ZD Y PRESNEHO STROJIRENSTVI GO
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 ZD Y PRESNEHO STROJIRENSTVI GO filed Critical ZD Y PRESNEHO STROJIRENSTVI GO
Publication of GB1091067A publication Critical patent/GB1091067A/en
Expired legal-status Critical Current

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
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
    • H02P1/46—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual synchronous motor
    • H02P1/52—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual synchronous motor by progressive increase of frequency of supply to motor
    • 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
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/40—Regulating or controlling the amount of current drawn or delivered by the motor for controlling the mechanical load

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Relay Circuits (AREA)
  • Control Of Multiple Motors (AREA)

Abstract

1,091,067. Control of A.C. motors. ZAVODY PRESNEHO STROJIRENSTVI GOTTWALDOV NARODNI PODNIK. April 4, 1966 [April 23, 1965], No. 14798/66. Heading H2J. An asynchronous motor M1, which drives the clamp of a machine tool, is de-energized when the clamping force reaches a predetermined value, a control circuit which comprises a relay B1 for disconnecting the motor being connected by way of transformer T1 in one supply conductor of the motor. The clamping operation is started by actuating a push-button to close contactor S1, the motor current rising to an nitial peak after which it is stabilized at a steady value. At time t1 the current increases slightly, a relay being timed to respond at this instant so that, at time t2, a contact 1B3 connects capacitor C1 through rectifier U1 across the whole of potentiometer R1. If the current exceeds the value I 0 , discharge tube X1 breaks down to energize relay B1 and disconnect the motor. If the current remains below the value I 0 , contact 1B4 is closed at time t3 to shortcircuit a pre-set portion of potentiometer R1 As soon as the chucks of the clamp engage the workpiece, the motor current rises to the value I 1 at time t4 and relay B1 is energized to disconnect the motor. The workpiece is released by actuating a push-button to energize contactor S2 for reverse drive, the motor being stopped when the push-button is released. Signal lamps may be provided.
GB14798/66A 1965-04-23 1966-04-04 A circuit arrangement for automatically disconnecting an asyncbronous electric motor Expired GB1091067A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS262765 1965-04-23

Publications (1)

Publication Number Publication Date
GB1091067A true GB1091067A (en) 1967-11-15

Family

ID=5363918

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14798/66A Expired GB1091067A (en) 1965-04-23 1966-04-04 A circuit arrangement for automatically disconnecting an asyncbronous electric motor

Country Status (3)

Country Link
AT (1) AT262458B (en)
DE (1) DE1563937A1 (en)
GB (1) GB1091067A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2037068A1 (en) * 1969-02-06 1970-12-31 Sulzer Ag

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2037068A1 (en) * 1969-02-06 1970-12-31 Sulzer Ag

Also Published As

Publication number Publication date
AT262458B (en) 1968-06-10
DE1563937A1 (en) 1970-04-30

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