GB224702A - A new or improved system of electric motor control and improvements in or connected with automatic controllers - Google Patents
A new or improved system of electric motor control and improvements in or connected with automatic controllersInfo
- Publication number
- GB224702A GB224702A GB2678823A GB2678823A GB224702A GB 224702 A GB224702 A GB 224702A GB 2678823 A GB2678823 A GB 2678823A GB 2678823 A GB2678823 A GB 2678823A GB 224702 A GB224702 A GB 224702A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relay
- master
- diverter
- contactor
- new
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/22—Control systems or devices for electric drives
- B66C13/23—Circuits for controlling the lowering of the load
- B66C13/24—Circuits for controlling the lowering of the load by dc motors
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Control Of Conveyors (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
224,702. Electric Control, Ltd., and Ellefsen, O. Oct. 26, 1923. Systems for continuous-current motors only; master control systems.-A relay responsive to back electromotive force renders acceleration possible beyond a predetermined speed, and in slowing down remakes connections for enabling lower speeds to be reached. The invention is described in relation to a master controller N and a number of electromagnetic contactors A.. . F for a motor M having series resistances and diverter resistances. In acceleration, the last step of the series resistance is short circuited by the contactor D when the master controler is turned to position 5, on condition that a relay G having its coil connected across the motor terminals has previously moved from the upper positions to the lower positions. In deceleration, the diverter resistance contactor A is closed when the master controller comes to position 2, provided that the relay G has returned to the upper position shown.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2678823A GB224702A (en) | 1923-10-26 | 1923-10-26 | A new or improved system of electric motor control and improvements in or connected with automatic controllers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2678823A GB224702A (en) | 1923-10-26 | 1923-10-26 | A new or improved system of electric motor control and improvements in or connected with automatic controllers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB224702A true GB224702A (en) | 1924-11-20 |
Family
ID=10249201
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2678823A Expired GB224702A (en) | 1923-10-26 | 1923-10-26 | A new or improved system of electric motor control and improvements in or connected with automatic controllers |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB224702A (en) |
-
1923
- 1923-10-26 GB GB2678823A patent/GB224702A/en not_active Expired
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