JPS6133101U

JPS6133101U - Electric positioner for electric valve actuator

Info

Publication number: JPS6133101U
Application number: JP11850584U
Authority: JP
Inventors: 茂光立森
Original assignee: 株式会社島津製作所
Priority date: 1984-07-31
Filing date: 1984-07-31
Publication date: 1986-02-28

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示すポジショナの回路ブロ
ック図である。第２図は作動アンプの入力信号と出力信号との関係を示
す図である。第３図は従来例を示すポジショナの回路ブロック図であ
る。１・・・差動アンプ、２・・・バルブアクチュエータ作
動装置、３・・・タイマ回路、４・・・不感帯設定回路
、、５ａ，５ｂ・・・リレー駆動回路、６ａ，６ｂ・・
・リレ＋、−’−・タイマ回路、８ｉ，８ｂ・・・シュ
ミットトリガ回路、９ａ，９１）−ＡＮＤ回路、
１０ａ，１０ｂ，１０ｃ・・・固定オンデレー、ｌｌａ
，ｌｌｂ・・・インバータ（ＮＯＴ回路）、１２・・・
ＡＮＤ回路、１３・・・ＯＲ回路、−１４・・・可変タ
イマ、ａ・・・入力信号、ｂ・・・フィードバック信号
、Ａ１，Ａ２・・・アンプ、■・・・入力信号ライン、
■・・・フィードバック信号ライ気ｆｆｌ・・・開信号
出カライン、■・・・閉信号出力ライン、ＩＩＩ−１，
ＩＶ−１・・・バイパスライン、■−２，ＩＶ−２
・・・バイパスライン”ｉｌＶ・・・ＡＮＤ回路出力
ライン、■，■，■ａ，■ｂ・・−ＯＲ回路出力ライン
。FIG. 1 is a circuit block diagram of a positioner showing an embodiment of the present invention. FIG. 2 is a diagram showing the relationship between the input signal and the output signal of the operational amplifier. FIG. 3 is a circuit block diagram of a conventional positioner. DESCRIPTION OF SYMBOLS 1... Differential amplifier, 2... Valve actuator operating device, 3... Timer circuit, 4... Dead zone setting circuit, 5a, 5b... Relay drive circuit, 6a, 6b...
・Relay +, -'-・Timer circuit, 8i, 8b... Schmitt trigger circuit, 9 a, 9 1) -AND circuit,
10a, 10b, 10c... fixed ondeley, lla
,llb...Inverter (NOT circuit), 12...
AND circuit, 13...OR circuit, -14...variable timer, a...input signal, b...feedback signal, A1, A2...amplifier, ■...input signal line,
■...Feedback signal line ffl...Open signal output line, ■...Closed signal output line, III-1,
IV-1...Bypass line, ■-2, IV-2
...Bypass line "il V...AND circuit output line, ■, ■, ■a, ■b...-OR circuit output line.

Claims

[Scope of utility model registration request]

A differential amplifier outputs an open or closed signal by comparing and discriminating an input signal that instructs the target valve opening with a feedback signal that indicates the valve opening, and the output signal of this differential amplifier is input, and the input signal is determined according to the type of input signal. An electric positioner comprising: a valve actuator actuator that operates an electric valve actuator and adjusts the valve opening according to the timing; and a timer circuit that inputs an output signal from the differential amplifier to the valve actuator actuator with a delay time. In,
The timer circuit is characterized in that the timer circuit is configured to delay input of the open or close signal to the valve actuator actuation device only within a set time after the differential amplifier outputs the open or close signal. Electric positioner for electric pulse actuators.