JPS5757302A - Malfunction preventing circuit of controller - Google Patents

Malfunction preventing circuit of controller

Info

Publication number
JPS5757302A
JPS5757302A JP13261580A JP13261580A JPS5757302A JP S5757302 A JPS5757302 A JP S5757302A JP 13261580 A JP13261580 A JP 13261580A JP 13261580 A JP13261580 A JP 13261580A JP S5757302 A JPS5757302 A JP S5757302A
Authority
JP
Japan
Prior art keywords
controller
output
circuit
fault
detecting
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
JP13261580A
Other languages
Japanese (ja)
Inventor
Takeshi Hayashi
Mitsuyasu Furuse
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.)
Meidensha Corp
Meidensha Electric Manufacturing Co Ltd
Original Assignee
Meidensha Corp
Meidensha Electric Manufacturing Co 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 Meidensha Corp, Meidensha Electric Manufacturing Co Ltd filed Critical Meidensha Corp
Priority to JP13261580A priority Critical patent/JPS5757302A/en
Publication of JPS5757302A publication Critical patent/JPS5757302A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B9/00—Safety arrangements
    • G05B9/02—Safety arrangements electric

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Safety Devices In Control Systems (AREA)

Abstract

PURPOSE:To assuredly prevent the malfunction of a controller caused by a fault of a DC power source, by detecting the output voltage of plural power sources of the controller and then controlling the output signal of the controller. CONSTITUTION:The voltage fault of DC power sources 2-4 of controllers 5A and 5B is detected by voltage detecting circuits 7-9. These detecting circuits obtain the power supply necessary for detection from other DC power sources. The output of the detecting circuit is applied to control circuit in form of a lock signal LS via an output insulating circuit to which a power source 16 of output relays 14 and 15 of the controller is applied plus a lock signal synthesizing circuit 13. In such way, the control signals given from the relays 14 and 15 are locked if at least a detection signal is faulty. Thus the malfunction of the controller caused by a fault of the DC power source can be assuredly prevented.
JP13261580A 1980-09-24 1980-09-24 Malfunction preventing circuit of controller Pending JPS5757302A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13261580A JPS5757302A (en) 1980-09-24 1980-09-24 Malfunction preventing circuit of controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13261580A JPS5757302A (en) 1980-09-24 1980-09-24 Malfunction preventing circuit of controller

Publications (1)

Publication Number Publication Date
JPS5757302A true JPS5757302A (en) 1982-04-06

Family

ID=15085464

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13261580A Pending JPS5757302A (en) 1980-09-24 1980-09-24 Malfunction preventing circuit of controller

Country Status (1)

Country Link
JP (1) JPS5757302A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6154984U (en) * 1984-09-07 1986-04-12

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6154984U (en) * 1984-09-07 1986-04-12

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