JPS5361034A - Air conditioner protective system - Google Patents

Air conditioner protective system

Info

Publication number
JPS5361034A
JPS5361034A JP13535376A JP13535376A JPS5361034A JP S5361034 A JPS5361034 A JP S5361034A JP 13535376 A JP13535376 A JP 13535376A JP 13535376 A JP13535376 A JP 13535376A JP S5361034 A JPS5361034 A JP S5361034A
Authority
JP
Japan
Prior art keywords
air conditioner
protective system
conditioner protective
motor
rpm
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
JP13535376A
Other languages
Japanese (ja)
Inventor
Kazumi Kuwabara
Katsuhiko Yabe
Tsunehiro Endo
Kiyoo Takeyasu
Katsuo Mori
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13535376A priority Critical patent/JPS5361034A/en
Publication of JPS5361034A publication Critical patent/JPS5361034A/en
Pending legal-status Critical Current

Links

Landscapes

  • Air Conditioning Control Device (AREA)
  • Protection Of Generators And Motors (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

PURPOSE: To prevent breakage of a motor drive circuit by arranging such that a motor is stopped when the motor rpm becomes higher or lower than the preset reference rpm due to external disturbance.
COPYRIGHT: (C)1978,JPO&Japio
JP13535376A 1976-11-12 1976-11-12 Air conditioner protective system Pending JPS5361034A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13535376A JPS5361034A (en) 1976-11-12 1976-11-12 Air conditioner protective system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13535376A JPS5361034A (en) 1976-11-12 1976-11-12 Air conditioner protective system

Publications (1)

Publication Number Publication Date
JPS5361034A true JPS5361034A (en) 1978-06-01

Family

ID=15149761

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13535376A Pending JPS5361034A (en) 1976-11-12 1976-11-12 Air conditioner protective system

Country Status (1)

Country Link
JP (1) JPS5361034A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5791686A (en) * 1980-11-28 1982-06-07 Sanyo Electric Co Ltd Servomotor circuit
JPS5863088A (en) * 1981-10-09 1983-04-14 Ebara Corp Protecting device in storage pump system
JPS58108990A (en) * 1981-12-21 1983-06-29 Matsushita Electric Ind Co Ltd Overrun preventing circuit for brushless motor
JPS59178993A (en) * 1983-03-18 1984-10-11 ソシエテ　アノニム　エトリ Method and device for detecting decelerated state of dc motor
JPS60219915A (en) * 1984-04-13 1985-11-02 株式会社日立製作所 Speed malfunction detecting circuit
JPS61135377A (en) * 1984-12-05 1986-06-23 Fujitsu Ltd Motor speed monitor circuit
JPS61218388A (en) * 1985-03-20 1986-09-27 Matsushita Refrig Co Controller of commutatorless dc motor
JPS6369420A (en) * 1986-09-10 1988-03-29 株式会社リコー Emergency stopper of driving motor
JPS63206190A (en) * 1987-02-19 1988-08-25 Matsushita Seiko Co Ltd Commutatorless motor
JPH04288450A (en) * 1990-12-18 1992-10-13 Samsung Electronics Co Ltd Device and method for controlling operation frequency of compressor in air conditioner
JP2007089386A (en) * 2005-09-22 2007-04-05 Pfeiffer Vacuum Gmbh Device for monitoring redundant rotational speed
JP2009225590A (en) * 2008-03-17 2009-10-01 Toyota Motor Corp Motor control unit
JP2013192288A (en) * 2012-03-12 2013-09-26 Fuji Electric Co Ltd Control method for inverter system

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5791686A (en) * 1980-11-28 1982-06-07 Sanyo Electric Co Ltd Servomotor circuit
JPS5863088A (en) * 1981-10-09 1983-04-14 Ebara Corp Protecting device in storage pump system
JPS58108990A (en) * 1981-12-21 1983-06-29 Matsushita Electric Ind Co Ltd Overrun preventing circuit for brushless motor
JPS59178993A (en) * 1983-03-18 1984-10-11 ソシエテ　アノニム　エトリ Method and device for detecting decelerated state of dc motor
JPS60219915A (en) * 1984-04-13 1985-11-02 株式会社日立製作所 Speed malfunction detecting circuit
JPS61135377A (en) * 1984-12-05 1986-06-23 Fujitsu Ltd Motor speed monitor circuit
JPS61218388A (en) * 1985-03-20 1986-09-27 Matsushita Refrig Co Controller of commutatorless dc motor
JPS6369420A (en) * 1986-09-10 1988-03-29 株式会社リコー Emergency stopper of driving motor
JPS63206190A (en) * 1987-02-19 1988-08-25 Matsushita Seiko Co Ltd Commutatorless motor
JPH04288450A (en) * 1990-12-18 1992-10-13 Samsung Electronics Co Ltd Device and method for controlling operation frequency of compressor in air conditioner
JP2007089386A (en) * 2005-09-22 2007-04-05 Pfeiffer Vacuum Gmbh Device for monitoring redundant rotational speed
JP2009225590A (en) * 2008-03-17 2009-10-01 Toyota Motor Corp Motor control unit
JP2013192288A (en) * 2012-03-12 2013-09-26 Fuji Electric Co Ltd Control method for inverter system

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