JPH0196002U - - Google Patents
Info
- Publication number
- JPH0196002U JPH0196002U JP18926087U JP18926087U JPH0196002U JP H0196002 U JPH0196002 U JP H0196002U JP 18926087 U JP18926087 U JP 18926087U JP 18926087 U JP18926087 U JP 18926087U JP H0196002 U JPH0196002 U JP H0196002U
- Authority
- JP
- Japan
- Prior art keywords
- manual
- feedback capacitor
- switch
- turned
- switching means
- 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
Links
- 239000003990 capacitor Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 2
- 230000005856 abnormality Effects 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
Landscapes
- Safety Devices In Control Systems (AREA)
Description
第１図は、この考案の一実施例を示すプロセス
調節計の回路接続図、第２図、第３図及び第４図
は、この考案の他の変形実施例を示す回路接続図
である。
１：ホールドアンプ、３：リレー、３ａ：リレ
ー常開接点、３ｂ：リレー常閉接点、４：放電回
路、５：手動スイツチ、６：自動スイツチ、７：
手動操作信号発生回路、Ｓ１，Ｓ２：スイツチ、
Ｃ１：帰還コンデンサ。
FIG. 1 is a circuit connection diagram of a process controller showing one embodiment of this invention, and FIGS. 2, 3, and 4 are circuit connection diagrams showing other modified embodiments of this invention. 1: Hold amplifier, 3: Relay, 3a: Relay normally open contact, 3b: Relay normally closed contact, 4: Discharge circuit, 5: Manual switch, 6: Automatic switch, 7:
Manual operation signal generation circuit, S1 , S2 : switch,
C1 : Feedback capacitor.
Claims (1)
ホールドアンプに、手動あるいは自動の操作信号
を入力するための手動／自動切替手段と、この手
動／自動切替手段と、前記ホールドアンプ間に接
続され、平常時はＯＮしており、電源断、異常発
生等の異常時にＯＦＦする第１のスイツチと、平
常時はＯＦＦしており異常時にＯＮする第２のス
イツチを含み、前記帰還コンデンサに並列接続さ
れ、前記第２のスイツチのＯＮで、前記帰還コン
デンサの電荷を放電あるいは充電する回路とから
なるプロセス調節計の出力回路。 A hold amplifier having a feedback capacitor, a manual/automatic switching means for inputting a manual or automatic operation signal to the hold amplifier, and a manual/automatic switching means connected between the manual/automatic switching means and the hold amplifier, is ON, and includes a first switch that is turned OFF in the event of an abnormality such as a power outage or an abnormality occurrence, and a second switch that is OFF in normal times and turned ON in an abnormality, and is connected in parallel to the feedback capacitor, and is connected in parallel to the feedback capacitor. The output circuit of the process controller includes a circuit that discharges or charges the charge of the feedback capacitor when the second switch is turned on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18926087U JPH0196002U (en) | 1987-12-11 | 1987-12-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18926087U JPH0196002U (en) | 1987-12-11 | 1987-12-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0196002U true JPH0196002U (en) | 1989-06-26 |
Family
ID=31480306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18926087U Pending JPH0196002U (en) | 1987-12-11 | 1987-12-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0196002U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4930771A (en) * | 1972-07-21 | 1974-03-19 |
-
1987
- 1987-12-11 JP JP18926087U patent/JPH0196002U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4930771A (en) * | 1972-07-21 | 1974-03-19 |
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