Title:
TEMPERATURE CONTROLLER
Document Type and Number:
Japanese Patent JP2014191808
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a temperature controller capable of highly accurately and easily setting a threshold value corresponding to a state where proper temperature control is not performed.SOLUTION: The temperature controller controls temperature of heated bodies 10, 20 by a heater 5. Temperature detection units 10, 20 detect the temperature of the heated bodies 10, 20. A difference calculation unit 6 calculates a difference value between a temperature detection value and a temperature setting value. Adjustment units 61, 62 calculate a manipulated variable to make the difference value zero. A comparison unit 72 compares the difference value acquired by the difference calculation unit 6 with a predetermined threshold value, and when the difference value is over the threshold value, outputs a first signal. An abnormality detection unit 73 outputs a second signal being an abnormality detection signal, when the first signal is outputted for a time exceeding a predetermined setting time. When the second signal is outputted, a power supply stop unit 64 stops power supply to the heater 5 to which the amount of power supply is controlled on the basis of the manipulated variable acquired by the adjustment units 61, 62.
Inventors:
AKAIKE KAZUO
FURUHATA TSUKASA
FURUHATA TSUKASA
Application Number:
JP2013069731A
Publication Date:
October 06, 2014
Filing Date:
March 28, 2013
Export Citation:
Assignee:
NIHON DEMPA KOGYO CO
International Classes:
G05D23/19; H03B5/32; H03L1/02
Attorney, Agent or Firm:
Toshio Inoue
Nobuaki Takizawa
Nobuaki Takizawa