GB548118A - Improvements in or relating to electric elevator control systems - Google Patents

Improvements in or relating to electric elevator control systems

Info

Publication number
GB548118A
GB548118A GB4355/41A GB435541A GB548118A GB 548118 A GB548118 A GB 548118A GB 4355/41 A GB4355/41 A GB 4355/41A GB 435541 A GB435541 A GB 435541A GB 548118 A GB548118 A GB 548118A
Authority
GB
United Kingdom
Prior art keywords
field
regulator
rpf
motor
generator
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
GB4355/41A
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.)
Westinghouse Electric International Co
Original Assignee
Westinghouse Electric International Co
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 Westinghouse Electric International Co filed Critical Westinghouse Electric International Co
Publication of GB548118A publication Critical patent/GB548118A/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
    • B66B1/02—Control systems without regulation, i.e. without retroactive action
    • B66B1/06—Control systems without regulation, i.e. without retroactive action electric
    • B66B1/08—Control systems without regulation, i.e. without retroactive action electric with devices, e.g. handles or levers, in the cars or cages for direct control of movements

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Multiple Motors (AREA)

Abstract

548,118. Control'of D.C. motors. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. April 1, 1941, No. 4355. Convention date, April 4, 1940. [Class 38 (iii)] A lift motor H is supplied from a generator G which is driven by a motor M together with an excitor EX, and a regulator machine R. Movement of car switch CS on to " up " contact 22 energizes contactor coil U which at contacts U<SP>2</SP>, U<SP>3</SP> completes the circuit of pattern field RPF of regulator R. The regulator R energizes the generator field GF, and a differential field RDF across the armature 9 acts on the regulator R to cause the voltage of generator to correspond to the excitation of the pattern field RPF. This action is assisted by a field RCF on the regulator which is so proportioned that 1 amp. through this field produces just sufficient E.M.F. to drive 1 amp. through the armature R and field GF. A field RSF on the regulator compensates for varying voltage drop due to load in the circuit of the motor armature H. When the car approaches a floor at which it is desired to stop, the switch CS is returned to contact 28 and an inductor relay operated by a hatch plate causes a contact V<SP>1</SP> to open to reduce the excitation of the pattern field RPF, and another inductor relay at the landing causes contactor U to be de-energized and a mechanical brake B to be applied. The brake B is released upon starting of the lift with a delay after the field RPF is excited so as to ensure that the motor H will take the load.
GB4355/41A 1940-04-04 1941-04-01 Improvements in or relating to electric elevator control systems Expired GB548118A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US548118XA 1940-04-04 1940-04-04

Publications (1)

Publication Number Publication Date
GB548118A true GB548118A (en) 1942-09-25

Family

ID=21993675

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4355/41A Expired GB548118A (en) 1940-04-04 1941-04-01 Improvements in or relating to electric elevator control systems

Country Status (1)

Country Link
GB (1) GB548118A (en)

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