FR2365906A1 - Rotor-locking prevention circuit for motor-driven machine - momentarily reverses rotor direction and disconnects supply from motor - Google Patents

Rotor-locking prevention circuit for motor-driven machine - momentarily reverses rotor direction and disconnects supply from motor

Info

Publication number
FR2365906A1
FR2365906A1 FR7628914A FR7628914A FR2365906A1 FR 2365906 A1 FR2365906 A1 FR 2365906A1 FR 7628914 A FR7628914 A FR 7628914A FR 7628914 A FR7628914 A FR 7628914A FR 2365906 A1 FR2365906 A1 FR 2365906A1
Authority
FR
France
Prior art keywords
motor
rotor
prevention circuit
locking prevention
driven machine
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
FR7628914A
Other languages
French (fr)
Other versions
FR2365906B3 (en
Inventor
Maurice Gouin
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.)
DESTRUCTEURS INDLS EXPLOIT
Original Assignee
DESTRUCTEURS INDLS EXPLOIT
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 DESTRUCTEURS INDLS EXPLOIT filed Critical DESTRUCTEURS INDLS EXPLOIT
Priority to FR7628914A priority Critical patent/FR2365906A1/en
Publication of FR2365906A1 publication Critical patent/FR2365906A1/en
Application granted granted Critical
Publication of FR2365906B3 publication Critical patent/FR2365906B3/fr
Granted legal-status Critical Current

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/0007—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating documents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B02C18/24—Drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/04—Safety devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/0007—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating documents
    • B02C2018/0023—Switching devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/0007—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating documents
    • B02C2018/0038—Motor drives

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Protection Of Generators And Motors (AREA)

Abstract

The rotor-locking prevention circuit is fitted to a machine driven by an electric motor e.g. a paper pulveriser. It has an overcurrent detector triggering a supply disconnector. The detector has a constant response time normally of the order of tenths of a second but only comes into operation some tens of seconds after the motor has started. The control circuitry that operates the disconnector also controls commutation of the motor such that the direction of rotation of the motor is momentarily reversed for a time sufficient to 'unlock' the rotor.
FR7628914A 1976-09-24 1976-09-24 Rotor-locking prevention circuit for motor-driven machine - momentarily reverses rotor direction and disconnects supply from motor Granted FR2365906A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7628914A FR2365906A1 (en) 1976-09-24 1976-09-24 Rotor-locking prevention circuit for motor-driven machine - momentarily reverses rotor direction and disconnects supply from motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7628914A FR2365906A1 (en) 1976-09-24 1976-09-24 Rotor-locking prevention circuit for motor-driven machine - momentarily reverses rotor direction and disconnects supply from motor

Publications (2)

Publication Number Publication Date
FR2365906A1 true FR2365906A1 (en) 1978-04-21
FR2365906B3 FR2365906B3 (en) 1979-06-08

Family

ID=9178084

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7628914A Granted FR2365906A1 (en) 1976-09-24 1976-09-24 Rotor-locking prevention circuit for motor-driven machine - momentarily reverses rotor direction and disconnects supply from motor

Country Status (1)

Country Link
FR (1) FR2365906A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2502983A1 (en) * 1981-03-31 1982-10-08 Schleicher Co Feinwerktech WORKING METHOD FOR OPERATING A BREAKING MACHINE AND BREAKING MACHINE FOR CARRYING OUT SAID METHOD
EP0313946A1 (en) * 1987-10-20 1989-05-03 Ideal-Werk Krug & Priester GmbH & Co. KG Document shreddding device
CN112433151A (en) * 2019-08-26 2021-03-02 上海汽车集团股份有限公司 Oil pump motor fault diagnosis method and device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2502983A1 (en) * 1981-03-31 1982-10-08 Schleicher Co Feinwerktech WORKING METHOD FOR OPERATING A BREAKING MACHINE AND BREAKING MACHINE FOR CARRYING OUT SAID METHOD
EP0313946A1 (en) * 1987-10-20 1989-05-03 Ideal-Werk Krug & Priester GmbH & Co. KG Document shreddding device
CN112433151A (en) * 2019-08-26 2021-03-02 上海汽车集团股份有限公司 Oil pump motor fault diagnosis method and device
CN112433151B (en) * 2019-08-26 2024-01-16 上海汽车集团股份有限公司 Oil pump motor fault diagnosis method and device

Also Published As

Publication number Publication date
FR2365906B3 (en) 1979-06-08

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Legal Events

Date Code Title Description
ST Notification of lapse