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JPH0415704U - - Google Patents

  • ️Fri Feb 07 1992

Info

Publication number
JPH0415704U
JPH0415704U JP5812890U JP5812890U JPH0415704U JP H0415704 U JPH0415704 U JP H0415704U JP 5812890 U JP5812890 U JP 5812890U JP 5812890 U JP5812890 U JP 5812890U JP H0415704 U JPH0415704 U JP H0415704U Authority
JP
Japan
Prior art keywords
monitor
signals
monitors
signal
sudden changes
Prior art date
1990-05-31
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
JP5812890U
Other languages
Japanese (ja)
Other versions
JP2514675Y2 (en
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.)
1990-05-31
Filing date
1990-05-31
Publication date
1992-02-07
1990-05-31 Application filed filed Critical
1990-05-31 Priority to JP1990058128U priority Critical patent/JP2514675Y2/en
1992-02-07 Publication of JPH0415704U publication Critical patent/JPH0415704U/ja
1996-10-23 Application granted granted Critical
1996-10-23 Publication of JP2514675Y2 publication Critical patent/JP2514675Y2/en
2005-05-31 Anticipated expiration legal-status Critical
Status Expired - Lifetime legal-status Critical Current

Links

  • 238000004886 process control Methods 0.000 claims description 3
  • 238000000034 method Methods 0.000 claims 4
  • 230000005856 abnormality Effects 0.000 claims 1
  • 238000010586 diagram Methods 0.000 description 2

Landscapes

  • Safety Devices In Control Systems (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、この考案の一実施例を示すプロセス
制御装置のブロツク図、第２図は、従来の二重化
構成の伝送器によるプロセス制御装置のブロツク
図である。 １，２……伝送器、３，８，９……モニタ、４
……信号切替器、１０，１１，１２，１３……Ａ
ＮＤ回路、１４……ＯＲ回路。 FIG. 1 is a block diagram of a process control device showing an embodiment of this invention, and FIG. 2 is a block diagram of a process control device using a conventional dual-configuration transmitter. 1, 2...Transmitter, 3, 8, 9...Monitor, 4
...Signal switch, 10, 11, 12, 13...A
ND circuit, 14...OR circuit.

Claims (1)

【実用新案登録請求の範囲】 二重化構成の第１と第２のプロセス伝送器から
の信号を受け、両信号の偏差を監視する第１のモ
ニタと、 前記第１のプロセス伝送器の信号の突変を監視
する第２のモニタと、 前記第２のプロセス伝送器の信号の突変を監視
する第３のモニタと、 前記第１、第２及び第３のモニタの出力の論理
処理により、前記第１、第２のプロセス伝送器の
信号のいずれか、または両方の異常を判定する論
理回路と、 を備えたことを特徴とするプロセス制御装置。[Claims for Utility Model Registration] A first monitor that receives signals from first and second process transmitters of a duplex configuration and monitors deviations between the two signals; a second monitor that monitors sudden changes in the signal of the second process transmitter; and a third monitor that monitors sudden changes in the signal of the second process transmitter. A process control device comprising: a logic circuit that determines an abnormality in either or both of the signals of the first and second process transmitters.

JP1990058128U 1990-05-31 1990-05-31 Process control equipment Expired - Lifetime JP2514675Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990058128U JP2514675Y2 (en) 1990-05-31 1990-05-31 Process control equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990058128U JP2514675Y2 (en) 1990-05-31 1990-05-31 Process control equipment

Publications (2)

Publication Number Publication Date
JPH0415704U true JPH0415704U (en) 1992-02-07
JP2514675Y2 JP2514675Y2 (en) 1996-10-23

Family

ID=31583459

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990058128U Expired - Lifetime JP2514675Y2 (en) 1990-05-31 1990-05-31 Process control equipment

Country Status (1)

Country Link
JP (1) JP2514675Y2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000112502A (en) * 1998-10-08 2000-04-21 Hitachi Ltd Automatic restoring circuit for control system
US8799707B2 (en) 2011-06-28 2014-08-05 Mitsubishi Heavy Industries, Ltd. Redundant system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5374595U (en) * 1976-11-25 1978-06-21
JPS54138971A (en) * 1978-03-24 1979-10-27 Gen Electric Monitoring circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5374595U (en) * 1976-11-25 1978-06-21
JPS54138971A (en) * 1978-03-24 1979-10-27 Gen Electric Monitoring circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000112502A (en) * 1998-10-08 2000-04-21 Hitachi Ltd Automatic restoring circuit for control system
US8799707B2 (en) 2011-06-28 2014-08-05 Mitsubishi Heavy Industries, Ltd. Redundant system

Also Published As

Publication number Publication date
JP2514675Y2 (en) 1996-10-23

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Legal Events

Date Code Title Description
2004-07-27 R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

2005-05-31 EXPY Cancellation because of completion of term