JPS5713291A - Blower emergency display unit - Google Patents

Blower emergency display unit

Info

Publication number
JPS5713291A
JPS5713291A JP8583980A JP8583980A JPS5713291A JP S5713291 A JPS5713291 A JP S5713291A JP 8583980 A JP8583980 A JP 8583980A JP 8583980 A JP8583980 A JP 8583980A JP S5713291 A JPS5713291 A JP S5713291A
Authority
JP
Japan
Prior art keywords
power supply
alarm
blower
relay
relay contacts
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
JP8583980A
Other languages
Japanese (ja)
Inventor
Masami Itoyama
Sadao Miyazaki
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP8583980A priority Critical patent/JPS5713291A/en
Publication of JPS5713291A publication Critical patent/JPS5713291A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Positive-Displacement Air Blowers (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

PURPOSE: To realize an effective blower emergency alarm, by releasing the alarm holding status for a blower emergency alarm when the power supply is instantaneously interrupted due to change-over of the power supply.
CONSTITUTION: An instantaneous power interruption detecting relay 4 is provided between power supply switch 3 and blower 5, while in parallel with this provision, control units 1, 2, power supply instantaneous interruption responding relays 17, 27, power supply instantaneous interruption responding relay contacts 17a, 27a, alarm suppressing relay 18, 28, alarm suppressing relay contacts 18a, 28a, and timing setting condensers 19, 29, are also provided. When the blower power supply is switched over, power supply instantaneous interruption detecting relay 4 is actuated and a current is applied to power supply instantaneous interruption responding relays 14, 27. Relay contacts 17a, 27a are consequently closed to allow a current flow through alarm suppressing relays 18, 28, duly causing those relay contacts 18a, 28a to open so as to transmit no emergency alarm. Accordingly, an effective blower emergency alarm can be realized.
COPYRIGHT: (C)1982,JPO&Japio
JP8583980A 1980-06-26 1980-06-26 Blower emergency display unit Pending JPS5713291A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8583980A JPS5713291A (en) 1980-06-26 1980-06-26 Blower emergency display unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8583980A JPS5713291A (en) 1980-06-26 1980-06-26 Blower emergency display unit

Publications (1)

Publication Number Publication Date
JPS5713291A true JPS5713291A (en) 1982-01-23

Family

ID=13870021

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8583980A Pending JPS5713291A (en) 1980-06-26 1980-06-26 Blower emergency display unit

Country Status (1)

Country Link
JP (1) JPS5713291A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5222114A (en) * 1990-05-30 1993-06-22 Hitachi, Ltd. X-ray analysis apparatus, especially computer tomography apparatus and x-ray target and collimator therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5222114A (en) * 1990-05-30 1993-06-22 Hitachi, Ltd. X-ray analysis apparatus, especially computer tomography apparatus and x-ray target and collimator therefor

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