JPS5781618A - Temperature control system - Google Patents

Temperature control system

Info

Publication number
JPS5781618A
JPS5781618A JP15682680A JP15682680A JPS5781618A JP S5781618 A JPS5781618 A JP S5781618A JP 15682680 A JP15682680 A JP 15682680A JP 15682680 A JP15682680 A JP 15682680A JP S5781618 A JPS5781618 A JP S5781618A
Authority
JP
Japan
Prior art keywords
relays
turned
cpu
temperature
degaussed
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
JP15682680A
Other languages
Japanese (ja)
Other versions
JPH0146883B2 (en
Inventor
Kiyotaka Yoshizaki
Hajime Fukao
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
Fuji 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 Fuji Electric Co Ltd, Fuji Electric Manufacturing Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP15682680A priority Critical patent/JPS5781618A/en
Publication of JPS5781618A publication Critical patent/JPS5781618A/en
Publication of JPH0146883B2 publication Critical patent/JPH0146883B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1917—Control of temperature characterised by the use of electric means using digital means

Landscapes

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

Abstract

PURPOSE:To make the switching operation unnecessary for the fault of a CPU to control the temperature surely, by switching automatically the system from the schedule operation to the thermostat operation when the CPU becomes faulty. CONSTITUTION:When a CPU (central processing device) 1 is normal, a relay XB is excited by the output of a fault detecting circuit 4, and a contact XB-1a is turned on, and relays X-Xn are turned on and off in accordance with the duty cycle operation signal from the CPU1, and relays XL-XLn are turned on and off also to drive motor compressors CM-CMn intermittently. When the CPU1 becomes faulty, the output of the fault detecting circuit 4 is extinguished, and the magnetism of the relay XB is degaussed, and consequently, the magnetism of relays XL-XLn is degaussed, and power is fed to motor compressors CM- CMn through a series circuit of contacts XL1b-XLnb and temperature regulating thermostats 8-1-8-n to hold the temperature in a set value.
JP15682680A 1980-11-06 1980-11-06 Temperature control system Granted JPS5781618A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15682680A JPS5781618A (en) 1980-11-06 1980-11-06 Temperature control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15682680A JPS5781618A (en) 1980-11-06 1980-11-06 Temperature control system

Publications (2)

Publication Number Publication Date
JPS5781618A true JPS5781618A (en) 1982-05-21
JPH0146883B2 JPH0146883B2 (en) 1989-10-11

Family

ID=15636187

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15682680A Granted JPS5781618A (en) 1980-11-06 1980-11-06 Temperature control system

Country Status (1)

Country Link
JP (1) JPS5781618A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6194118A (en) * 1984-10-16 1986-05-13 Toshiba Corp Temperature controller

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6194118A (en) * 1984-10-16 1986-05-13 Toshiba Corp Temperature controller

Also Published As

Publication number Publication date
JPH0146883B2 (en) 1989-10-11

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