GB1385093A - - Google Patents

Info

Publication number
GB1385093A
GB1385093A GB3596072A GB3596072A GB1385093A GB 1385093 A GB1385093 A GB 1385093A GB 3596072 A GB3596072 A GB 3596072A GB 3596072 A GB3596072 A GB 3596072A GB 1385093 A GB1385093 A GB 1385093A
Authority
GB
United Kingdom
Prior art keywords
resistors
switches
aug
lift
short 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.)
Expired
Application number
GB3596072A
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 filed Critical
Publication of GB1385093A publication Critical patent/GB1385093A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
    • B66B1/28—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
    • B66B1/30—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on driving gear, e.g. acting on power electronics, on inverter or rectifier controlled motor

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Direct Current Motors (AREA)
  • Types And Forms Of Lifts (AREA)

Abstract

1385093 Control of D.C. motors OTIS ELEVATOR CO 1 Aug 1972 [9 Aug 1971] 35960/72 Heading H2J A lift CA controlled by a Ward-Leonard system, as described in Specification 1,174,075, travels at its rated speed until it is within a predetermined distance of a floor at which it is stopping, when it is slowed by removing a short circuit from a resistance circuit GF1-6 connected in series with a generator field 20 and a power amplifier 22, 23, 24. The short circuit is provided by either switches HXI and UXI for the resistors GF1, 3, 5 associated with upward travel or switches HX2 and DX1 for the "down" resistors GF2, 4, 6. Further switches LIR1, L2R1, L1R2, L2R2 are responsive to the load in the lift to selectively short out some of the resistors.
GB3596072A 1971-08-09 1972-08-01 Expired GB1385093A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17007271A 1971-08-09 1971-08-09

Publications (1)

Publication Number Publication Date
GB1385093A true GB1385093A (en) 1975-02-26

Family

ID=22618438

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3596072A Expired GB1385093A (en) 1971-08-09 1972-08-01

Country Status (6)

Country Link
US (1) US3688874A (en)
JP (1) JPS5412835Y2 (en)
AU (1) AU462309B2 (en)
CA (1) CA960386A (en)
GB (1) GB1385093A (en)
ZA (1) ZA725374B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4072212A (en) * 1975-08-28 1978-02-07 Mitsubishi Denki Kabushiki Kaisha Elevator speed control system
JPH01318568A (en) * 1988-06-17 1989-12-25 Japan Atom Energy Res Inst Generator driver
FI86053C (en) * 1989-10-31 1992-07-10 Kone Oy Method and apparatus for controlling a lifting motor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3410367A (en) * 1964-02-07 1968-11-12 Reliance Electric & Eng Co Elevator motor acceleration control by a stepped resistor responsive to distance from floor
US3536969A (en) * 1968-04-01 1970-10-27 Otis Elevator Co Elevator motor control

Also Published As

Publication number Publication date
ZA725374B (en) 1973-05-30
AU4539172A (en) 1974-02-14
US3688874A (en) 1972-09-05
JPS4825458U (en) 1973-03-26
JPS5412835Y2 (en) 1979-06-04
AU462309B2 (en) 1975-06-19
CA960386A (en) 1974-12-31

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee