JPH0277734U - - Google Patents
Info
- Publication number
- JPH0277734U JPH0277734U JP15749988U JP15749988U JPH0277734U JP H0277734 U JPH0277734 U JP H0277734U JP 15749988 U JP15749988 U JP 15749988U JP 15749988 U JP15749988 U JP 15749988U JP H0277734 U JPH0277734 U JP H0277734U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- programmable controller
- voltage
- detection means
- circuit
- 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
Links
Landscapes
- Power Sources (AREA)
Description
第１図〜第３図は、本考案に係るプログラマブ
ルコントローラの電源回路の実施例を示したブロ
ツク図であり、第４図は、従来例の電源回路を示
したブロツク図である。
２……第一の直流電源、３……第二の直流電源
、５……交流電源監視回路、６……直流電源監視
回路、７……ＯＲ回路、８……トランジスタ。
1 to 3 are block diagrams showing an embodiment of a power supply circuit for a programmable controller according to the present invention, and FIG. 4 is a block diagram showing a conventional power supply circuit. 2...First DC power supply, 3...Second DC power supply, 5...AC power supply monitoring circuit, 6...DC power supply monitoring circuit, 7...OR circuit, 8...Transistor.
Claims (1)
商用電源が所定の直流電圧を作成して負荷に供給
する第一の直流電源と、前記第一の直流電源と直
列に接続され、この第一の直流電源よりも低い直
流電圧を作成してプログムマブルコントローラの
内部回路作動用に供給する第二の直流電源と、前
記プログラマブルコントローラに供給される商用
電源の電圧を検知する商用電源電圧検知手段を有
するプログラマブルコントローラの電源回路にお
いて、 前記商用電源電圧検知手段による電圧低下の検
知結果に基づいて前記第一の直流電源と前記負荷
との接続を遮断する遮断手段を設けたことを特徴
とするプログラマブルコントローラの電源回路。 (2) プログラマブルコントローラに供給される
商用電源から所定の直流電圧を作成して負荷に供
給する第一の直流電源と、この第一の直流電源と
直列に接続され、この第一の直流電源よりも低い
直流電圧を作成してプログラマブルコントローラ
の内部回路作動用に供給する第二の直流電源を有
するプログラマブルコントローラの電源回路にお
いて、 前記第一の直流電源の電圧を検知する直流電源
電圧検知手段と、この直流電源電圧検知手段によ
る電圧低下の検知結果に基づいて前記第一の直流
電源と前記負荷との接続を遮断手段とを設けたこ
とを特徴とするプログラマブルコントローラの電
源回路。 (3) 請求項第２項に記載のプログラマブルコン
トローラの電源回路において、 プログラマブルコントローラに供給される商用
電源の電圧を検知する商用電源電圧検知手段と、 前記商用電源電圧検知手段又は前記直流電源電
圧検知手段のいづれかが電圧低下を検知したとき
に、前記第一の直流電源と負荷との接続を遮断す
る遮断手段とを設けたことを特徴とするプログラ
マブルコントローラの電源回路。[Claims for Utility Model Registration] (1) A commercial power supply supplied to the programmable controller is connected in series with a first DC power supply that creates a predetermined DC voltage and supplies it to the load, and the first DC power supply. , a second DC power supply that creates a DC voltage lower than the first DC power supply and supplies it to operate the internal circuit of the programmable controller; and a commercial power supply that detects the voltage of the commercial power supply supplied to the programmable controller. In the power supply circuit of a programmable controller having a power supply voltage detection means, a cutoff means is provided for cutting off the connection between the first DC power supply and the load based on a voltage drop detection result by the commercial power supply voltage detection means. The power supply circuit of the programmable controller is characterized by: (2) A first DC power supply that creates a predetermined DC voltage from the commercial power supply supplied to the programmable controller and supplies it to the load, and a DC power supply that is connected in series with this first DC power supply and In a power supply circuit for a programmable controller having a second DC power supply that generates a low DC voltage and supplies it to the internal circuit operation of the programmable controller, a DC power supply voltage detection means for detecting the voltage of the first DC power supply; A power supply circuit for a programmable controller, comprising means for cutting off connection between the first DC power supply and the load based on a voltage drop detection result by the DC power supply voltage detection means. (3) The power supply circuit for a programmable controller according to claim 2, comprising: commercial power supply voltage detection means for detecting the voltage of commercial power supply supplied to the programmable controller; and the commercial power supply voltage detection means or the DC power supply voltage detection means. 1. A power supply circuit for a programmable controller, comprising: a cutoff means for cutting off the connection between the first DC power source and a load when any of the means detects a voltage drop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988157499U JP2536046Y2 (en) | 1988-12-01 | 1988-12-01 | Power supply circuit of programmable controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988157499U JP2536046Y2 (en) | 1988-12-01 | 1988-12-01 | Power supply circuit of programmable controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0277734U true JPH0277734U (en) | 1990-06-14 |
| JP2536046Y2 JP2536046Y2 (en) | 1997-05-21 |
Family
ID=31436998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988157499U Expired - Lifetime JP2536046Y2 (en) | 1988-12-01 | 1988-12-01 | Power supply circuit of programmable controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2536046Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5884326A (en) * | 1981-11-13 | 1983-05-20 | Fuji Electric Co Ltd | Processing system of service interruption for vending machine |
| JPS60148328A (en) * | 1984-01-13 | 1985-08-05 | 株式会社日立製作所 | power control circuit |
-
1988
- 1988-12-01 JP JP1988157499U patent/JP2536046Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5884326A (en) * | 1981-11-13 | 1983-05-20 | Fuji Electric Co Ltd | Processing system of service interruption for vending machine |
| JPS60148328A (en) * | 1984-01-13 | 1985-08-05 | 株式会社日立製作所 | power control circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2536046Y2 (en) | 1997-05-21 |
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