JPH0337511U - - Google Patents

Info

Publication number
JPH0337511U
JPH0337511U JP9863689U JP9863689U JPH0337511U JP H0337511 U JPH0337511 U JP H0337511U JP 9863689 U JP9863689 U JP 9863689U JP 9863689 U JP9863689 U JP 9863689U JP H0337511 U JPH0337511 U JP H0337511U
Authority
JP
Japan
Prior art keywords
circuit
output
signal
outputs
proportional valve
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
JP9863689U
Other languages
Japanese (ja)
Other versions
JPH0749531Y2 (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.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1989098636U priority Critical patent/JPH0749531Y2/en
Publication of JPH0337511U publication Critical patent/JPH0337511U/ja
Application granted granted Critical
Publication of JPH0749531Y2 publication Critical patent/JPH0749531Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Control Of Fluid Pressure (AREA)
  • Magnetically Actuated Valves (AREA)

Description

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

第１図は本考案に係る電空比例弁用パワーアン
プの内部構成を示すブロツク図、第２図はその具
体的な回路図である。 １…基本回路、２…異常検出回路、３…フイー
ドバツク回路、４…直流電源回路、５…積分回路
、６…発振回路、７…電圧比較回路、９…出力回
路、１０…電流帰還回路、１８…パルス判定回路
、１９…異常信号出力回路。 FIG. 1 is a block diagram showing the internal configuration of a power amplifier for an electropneumatic proportional valve according to the present invention, and FIG. 2 is a specific circuit diagram thereof. DESCRIPTION OF SYMBOLS 1...Basic circuit, 2...Abnormality detection circuit, 3...Feedback circuit, 4...DC power supply circuit, 5...Integrator circuit, 6...Oscillation circuit, 7...Voltage comparison circuit, 9...Output circuit, 10...Current feedback circuit, 18 ...Pulse judgment circuit, 19...Abnormal signal output circuit.

Claims (1)

【実用新案登録請求の範囲】 １ 直流電源回路、入力信号を積分する積分回路
、三角波を出力する発振回路、これら積分回路及
び発振回路からの出力信号を合成したものを基準
電圧と比較する電圧比較回路、該電圧比較回路か
らの出力信号を受けて電空比例弁を駆動する出力
回路、該出力回路からの出力信号を受けて前記積
分回路に帰還信号を送る電流帰還回路を備えた基
本回路と、 前記基本回路における出力回路に接続され、該
出力回路からパルスが入力されたときは低レベル
信号を出力し、パルスが入力されないときは高レ
ベル信号を出力するパルス判定回路、該パルス判
定回路から高レベル信号が出力されたとき異常信
号を出力する異常信号出力回路を備えた異常検出
回路と、 を有することを特徴とする電空比例弁用パワーア
ンプ。 ２ センサから送られる電空比例弁の圧力、位置
、回転数等の制御情報に関する信号をフイードバ
ツクするためのフイードバツク回路を備え、該フ
イードバツク回路は切換手段により切り離し自在
であることを特徴とする実用新案登録請求の範囲
第１項記載の電空比例弁用パワーアンプ。[Claims for Utility Model Registration] 1. A DC power supply circuit, an integration circuit that integrates an input signal, an oscillation circuit that outputs a triangular wave, and a voltage comparison that compares the combined output signals from these integration circuits and oscillation circuits with a reference voltage. a basic circuit comprising a circuit, an output circuit that receives an output signal from the voltage comparison circuit to drive an electropneumatic proportional valve, and a current feedback circuit that receives an output signal from the output circuit and sends a feedback signal to the integration circuit; , a pulse determination circuit that is connected to the output circuit in the basic circuit and outputs a low level signal when a pulse is input from the output circuit, and outputs a high level signal when no pulse is input; and from the pulse determination circuit. A power amplifier for an electro-pneumatic proportional valve, comprising: an abnormality detection circuit equipped with an abnormal signal output circuit that outputs an abnormal signal when a high-level signal is output. 2. A utility model comprising a feedback circuit for feedbacking signals related to control information such as pressure, position, rotation speed, etc. of an electropneumatic proportional valve sent from a sensor, and the feedback circuit is detachable by a switching means. A power amplifier for an electropneumatic proportional valve according to claim 1.
JP1989098636U 1989-08-24 1989-08-24 Power amplifier for electro-pneumatic proportional valve Expired - Lifetime JPH0749531Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989098636U JPH0749531Y2 (en) 1989-08-24 1989-08-24 Power amplifier for electro-pneumatic proportional valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989098636U JPH0749531Y2 (en) 1989-08-24 1989-08-24 Power amplifier for electro-pneumatic proportional valve

Publications (2)

Publication Number Publication Date
JPH0337511U true JPH0337511U (en) 1991-04-11
JPH0749531Y2 JPH0749531Y2 (en) 1995-11-13

Family

ID=31647719

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989098636U Expired - Lifetime JPH0749531Y2 (en) 1989-08-24 1989-08-24 Power amplifier for electro-pneumatic proportional valve

Country Status (1)

Country Link
JP (1) JPH0749531Y2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6218804A (en) * 1985-07-17 1987-01-27 Smc Corp Power amplifier for electromagnetic proportional control valve
JPS6319019A (en) * 1986-07-11 1988-01-26 Matsushita Electric Ind Co Ltd Fail-safe device
JPH01169512A (en) * 1987-12-24 1989-07-04 Shin Meiwa Ind Co Ltd electric servo drive device
JPH01209509A (en) * 1988-02-17 1989-08-23 Tamagawa Seiki Co Ltd servo system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6218804A (en) * 1985-07-17 1987-01-27 Smc Corp Power amplifier for electromagnetic proportional control valve
JPS6319019A (en) * 1986-07-11 1988-01-26 Matsushita Electric Ind Co Ltd Fail-safe device
JPH01169512A (en) * 1987-12-24 1989-07-04 Shin Meiwa Ind Co Ltd electric servo drive device
JPH01209509A (en) * 1988-02-17 1989-08-23 Tamagawa Seiki Co Ltd servo system

Also Published As

Publication number Publication date
JPH0749531Y2 (en) 1995-11-13

Similar Documents

Publication Publication Date Title
JPS6012702U (en) cylinder control device
JPS59190941U (en) Gas turbine engine fuel control device
JPH0244179U (en)
JPH0280270U (en)
JPS5970201U (en) Pulse-pneumatic converter
JPS6324401U (en)
JPH0232062U (en)
JPS6047001U (en) Algorithm switching analog controller
JPH02129998U (en)
JPH0318699U (en)
JPS58126568U (en) power steering device
JPS62198711U (en)
JPH02110510U (en)
JPH0469373U (en)
JPS6363265U (en)
JPS61199474U (en)
JPS6047002U (en) Algorithm switching analog controller
JPH029991U (en)
JPH0454434U (en)
JPH0211284U (en)
JPH03113936U (en)
JPH033139U (en)
JPH01150272U (en)
JPS6450699U (en)
JPH0226811U (en)

Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term