JPS6456275A - Solenoid valve controller - Google Patents

Solenoid valve controller

Info

Publication number
JPS6456275A
JPS6456275A JP21087887A JP21087887A JPS6456275A JP S6456275 A JPS6456275 A JP S6456275A JP 21087887 A JP21087887 A JP 21087887A JP 21087887 A JP21087887 A JP 21087887A JP S6456275 A JPS6456275 A JP S6456275A
Authority
JP
Japan
Prior art keywords
signal
solenoid valve
abnormality
output
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.)
Granted
Application number
JP21087887A
Other languages
Japanese (ja)
Other versions
JP2735550B2 (en
Inventor
Yutaka Mori
Akihiro Ono
Tsutomu Matsumoto
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.)
Toyoda Koki KK
Original Assignee
Toyoda Koki KK
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 Toyoda Koki KK filed Critical Toyoda Koki KK
Priority to JP62210878A priority Critical patent/JP2735550B2/en
Publication of JPS6456275A publication Critical patent/JPS6456275A/en
Application granted granted Critical
Publication of JP2735550B2 publication Critical patent/JP2735550B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To prevent the abnormal the generation of heat for a coil of a solenoid valve by turning the amplification factor of a differential amplifier into about 1 (one) when abnormality such as the grounding of the minus side of the solenoid valve coil takes place. CONSTITUTION:When a difference in a signal value between an output signal from a difference amplifier 20 or the signal that varies in association with this signal and a feedback signal from a feedback circuit 40 becomes larger than a preset value, an abnormality detecting circuit 45 judges that a solenoid valve 30 is in an abnormal condition. When a signal control circuit 45 detects this abnormality, a signal control circuit 50 turns the amplification factor of the difference amplifier 20 into about 1 (one). When the abnormality detecting circuit 45 detects the abnormality, an output limiting means 2 limits the range of the command signal, which is output from a control means 1, to a preset range that is narrower than the normal range.
JP62210878A 1987-08-25 1987-08-25 Solenoid valve control device Expired - Fee Related JP2735550B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62210878A JP2735550B2 (en) 1987-08-25 1987-08-25 Solenoid valve control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62210878A JP2735550B2 (en) 1987-08-25 1987-08-25 Solenoid valve control device

Publications (2)

Publication Number Publication Date
JPS6456275A true JPS6456275A (en) 1989-03-03
JP2735550B2 JP2735550B2 (en) 1998-04-02

Family

ID=16596590

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62210878A Expired - Fee Related JP2735550B2 (en) 1987-08-25 1987-08-25 Solenoid valve control device

Country Status (1)

Country Link
JP (1) JP2735550B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008150200A (en) * 2006-12-20 2008-07-03 Hitachi Ltd Elevator device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5948264A (en) * 1982-09-09 1984-03-19 Mazda Motor Corp Controller for power steering
JPS60197468A (en) * 1984-03-16 1985-10-05 Nissan Motor Co Ltd Power steering apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5948264A (en) * 1982-09-09 1984-03-19 Mazda Motor Corp Controller for power steering
JPS60197468A (en) * 1984-03-16 1985-10-05 Nissan Motor Co Ltd Power steering apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008150200A (en) * 2006-12-20 2008-07-03 Hitachi Ltd Elevator device

Also Published As

Publication number Publication date
JP2735550B2 (en) 1998-04-02

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