JPS5522459A - Pair roll driving start control method of rolling mill - Google Patents

Pair roll driving start control method of rolling mill

Info

Publication number
JPS5522459A
JPS5522459A JP9539478A JP9539478A JPS5522459A JP S5522459 A JPS5522459 A JP S5522459A JP 9539478 A JP9539478 A JP 9539478A JP 9539478 A JP9539478 A JP 9539478A JP S5522459 A JPS5522459 A JP S5522459A
Authority
JP
Japan
Prior art keywords
frequency
synchronous motor
voltage
frequency converter
started
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.)
Pending
Application number
JP9539478A
Other languages
Japanese (ja)
Inventor
Kanji Tsuruoka
Kazutomo Ezaki
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.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan Ltd
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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP9539478A priority Critical patent/JPS5522459A/en
Publication of JPS5522459A publication Critical patent/JPS5522459A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To turn on power source after controlling of revolutions and synchronously drive pair rolls by low-frequency-starting the other of separate synchronous motors.
CONSTITUTION: The synchronous motor 11 of the lower roll is low-frequency- started by controlling a frequency converter 15. After the output frequency and voltage of the frequency converter 15 have coincided with the frequency and voltage of the power source, the output voltage of the frequency converter 15 is made once zero and the synchronous motor 11 of the lower roll is started. Next, the synchronous motor 10 of the upper roll is low-frequency-started and when its speed has become nearly 100%, the deviations between the relative angle positions of cross pins 6a, 7a are eliminated or kept within a permissible value by controlling the revolution of the synchronous motor 10 based on the detection signal of the deviations between the relative angle position of both cross pins 6a, l7a from relative angle deviation detecting device 14. Next, the voltage phase difference between the input and output sides of the frequency converter 15 is detected and the revolution of the synchronous motor 10 is controlled by this signal, whereby the voltage phase difference is eliminated and the upper and lower rolls 4, 5 are synchronously driven.
COPYRIGHT: (C)1980,JPO&Japio
JP9539478A 1978-08-07 1978-08-07 Pair roll driving start control method of rolling mill Pending JPS5522459A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9539478A JPS5522459A (en) 1978-08-07 1978-08-07 Pair roll driving start control method of rolling mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9539478A JPS5522459A (en) 1978-08-07 1978-08-07 Pair roll driving start control method of rolling mill

Publications (1)

Publication Number Publication Date
JPS5522459A true JPS5522459A (en) 1980-02-18

Family

ID=14136425

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9539478A Pending JPS5522459A (en) 1978-08-07 1978-08-07 Pair roll driving start control method of rolling mill

Country Status (1)

Country Link
JP (1) JPS5522459A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0691526A (en) * 1992-09-14 1994-04-05 Amitec Corp Plate material work device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53114016A (en) * 1977-03-17 1978-10-05 Toshiba Corp Starting controller for rolling mill sync. motor
JPS53136615A (en) * 1977-05-04 1978-11-29 Toshiba Corp Controller for synchronous motor used in driving rolling roll
JPS53146113A (en) * 1977-05-26 1978-12-19 Toshiba Corp Start controller for synchronous machine for driving roller for rolling

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53114016A (en) * 1977-03-17 1978-10-05 Toshiba Corp Starting controller for rolling mill sync. motor
JPS53136615A (en) * 1977-05-04 1978-11-29 Toshiba Corp Controller for synchronous motor used in driving rolling roll
JPS53146113A (en) * 1977-05-26 1978-12-19 Toshiba Corp Start controller for synchronous machine for driving roller for rolling

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0691526A (en) * 1992-09-14 1994-04-05 Amitec Corp Plate material work device

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