JPS60211252A - Erroneous connection preventing circuit - Google Patents
Erroneous connection preventing circuitInfo
- Publication number
- JPS60211252A JPS60211252A JP59067674A JP6767484A JPS60211252A JP S60211252 A JPS60211252 A JP S60211252A JP 59067674 A JP59067674 A JP 59067674A JP 6767484 A JP6767484 A JP 6767484A JP S60211252 A JPS60211252 A JP S60211252A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- control circuit
- short
- cable
- fuse
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、複数の制御回路を、２種類以上の接続線で接
続して成る制御回路システムに係わり、特に、接続誤い
による回路破損を防止する保護方式に関する。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a control circuit system in which a plurality of control circuits are connected by two or more types of connection wires, and in particular, to prevent circuit damage due to connection errors. Regarding protection methods.
本発明の対象となる従来回路を、回転数制御セパレート
形°空気調和装置を例として、以下説明する。第１図は
、該空気調和装置の電気系統図で、１は、商用電源、２
はパワーリレー、３はインバータ装置、４は、可変速圧
縮機モータ、５は室内電気回路、６は、制御信号のイン
ターフェイス回路である。端子Ａ、Ｂ、０、Ｄの左側は
、室内電気品で、端子Ａ′、Ｂ′、０′、Ｄ′の右側は
、室外電気品であり、両型気品を４芯のＦケーブルで結
線している。インバータ装置３へは、パワーリレー２、
及びＡ −Ａ’、Ｂ −Ｂ’のケーブルを介して、商用
電源１より電力か、０−Ｃ′、Ｄ −Ｄ’のケーブル、
インターフェイス回路６を介して、室内電気回路５より
、動作モード、回転数等の制御信号がそれぞれ伝送され
る。従がって、該４芯ケーブルは室内外接続順序が決ま
っており、順序を誤ると、回路の一部を破損することが
ある。第２図は、電力供給端子Ａ、Ｂと、信号入力端子
Ｃ′、Ｄ′が誤まって接続された場合の等価回路である
。インターフェイス回路６は、送信用ホトカプラ７、受
信用ホトカプラ８およびダイオード９等から成っている
。A conventional circuit to which the present invention is applied will be described below, taking a rotation speed controlled separate type air conditioner as an example. Figure 1 is an electrical system diagram of the air conditioner, in which 1 is a commercial power supply, 2
3 is a power relay, 3 is an inverter device, 4 is a variable speed compressor motor, 5 is an indoor electric circuit, and 6 is a control signal interface circuit. The left side of terminals A, B, 0, and D are indoor electrical products, and the right side of terminals A', B', 0', and D' are outdoor electrical products. Both types of electrical equipment are connected with a 4-core F cable. are doing. To the inverter device 3, a power relay 2,
And the power is supplied from the commercial power supply 1 via the cables A-A', B-B', or the cables 0-C', D-D',
Control signals such as operation mode and rotation speed are transmitted from the indoor electric circuit 5 via the interface circuit 6 . Therefore, the order in which the four-core cable is connected indoors and outdoors is determined, and if the order is incorrect, part of the circuit may be damaged. FIG. 2 shows an equivalent circuit when power supply terminals A, B and signal input terminals C', D' are connected incorrectly. The interface circuit 6 includes a transmitting photocoupler 7, a receiving photocoupler 8, a diode 9, and the like.
この様な結線では、ケーブル線、Ｂ−Ｄ’、ホトカプラ
８、ダイオード９、ケーブル線０’−Ａの順路で大きな
短絡電流が流れ、ホトカプラ８を破損する。この様に、
誤配線により、回路部品を破損する例が多いために、製
品では、注意孔や、ケーブルの種類を明示するシール等
を同梱しているが、誤配線事故を完無できなかった。In such a connection, a large short circuit current flows in the order of cable line BD', photocoupler 8, diode 9, and cable line 0'-A, damaging photocoupler 8. Like this,
Because there are many cases of circuit components being damaged due to incorrect wiring, products are packaged with caution holes and stickers that clearly indicate the type of cable, but this has not completely eliminated miswiring accidents.
本発明の目的は、上記不都合を解消すべくなされたもの
で、電力供給線と信号伝送線により接続された複数個の
回路ブロックを持つ制御回路システムにおいて、上記２
種類の電線を誤接続しても、ヒユーズ等により、上記制
御システムを保護する手段を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and to provide a control circuit system having a plurality of circuit blocks connected by a power supply line and a signal transmission line.
The object of the present invention is to provide a means for protecting the control system using a fuse or the like even if different types of electric wires are connected incorrectly.
本発明は、誤配線により、インターフェイス回路部品に
多大のダメージが加わることに顧みてなされたもので、
少（とも、ヒユーズ等取換えが容易な部品により保護す
る様な構成としたものである。The present invention was developed in consideration of the fact that incorrect wiring can cause a great deal of damage to interface circuit components.
The structure is such that it is protected by easily replaceable parts such as fuses.
以下、本発明の一実施例を第３図及び第４図により、説
明する。第３図は、本発明の回路において、電力供給線
が、信号入力端子０′、Ｄ′に接続された場合の等価回
路を示す。第２図と対応して、同一部品には同一符号を
付したが、追加された部品は、トライアック１０、抵抗
１１、ヒユーズ１２である。本回路の動作原理を説明す
る。ケーブルＢ −Ｄ’、抵抗１１、ホトカプラ８、ダ
イオード９、ヒユーズ１２、ケーブルＯ’−Ａの順路で
短絡電流が流れだすと、抵抗１１に電位差が生じるため
、トライアック１０がトリガされてオン状態となり、短
絡電流は、殆んどＦＬＳＩＱをバリパスする。ヒユーズ
１２を、ＦＬ８１０の短絡耐量以下の容量のものに選べ
ば、部品破壊を招くことなく、ヒユーズ１２を溶断せし
めることができる。An embodiment of the present invention will be described below with reference to FIGS. 3 and 4. FIG. 3 shows an equivalent circuit when the power supply line is connected to signal input terminals 0' and D' in the circuit of the present invention. Corresponding to FIG. 2, the same parts are given the same reference numerals, but the added parts are a triac 10, a resistor 11, and a fuse 12. The operating principle of this circuit will be explained. When a short circuit current begins to flow in the order of cable B-D', resistor 11, photocoupler 8, diode 9, fuse 12, and cable O'-A, a potential difference occurs in resistor 11, which triggers triac 10 and turns it on. , the short circuit current almost vari-passes the FLSIQ. If the fuse 12 is selected to have a capacity less than or equal to the short-circuit withstand capacity of the FL810, the fuse 12 can be blown out without causing damage to the parts.
勿論、抵抗１１は、ホトカプラ８の短絡耐量以下の電流
で、トライアック１０がトリガする様な値に選んでお（
必要があることは言うまでもない。Of course, the resistor 11 should be selected to a value that will cause the triac 10 to trigger at a current that is less than the short circuit withstand capacity of the photocoupler 8 (
Needless to say, it is necessary.
第４図は、電力供給線の一端Ｂが、信号入力端子Ｃ′に
誤接続された場合の等価回路である。この場合は、例え
ば、ケーブルＡ→Ａ′、インバータ装置３、ケーブルＢ
′→Ｃ１室内電気回路、ケーブルＤ −＋ Ｄ’、抵抗
１１、ホトカプラ８、ダイオード９、ヒユーズに、ケー
ブル０〆−Ｂの順路で、短絡電流が流れる。インターフ
ェイス回路６に対する保護原理は上記したとおりである
が、室内電気品５に対する保護は、端子間耐圧以下のバ
リスタ或いはアレスタ１３等の部品が必要となる。動作
原理は、短絡電流がバリスタ１３を通過する以外は、上
記内容と同一である。FIG. 4 shows an equivalent circuit when one end B of the power supply line is erroneously connected to the signal input terminal C'. In this case, for example, cable A → A', inverter device 3, cable B
A short-circuit current flows through the indoor electric circuit '→C1, cable D - + D', resistor 11, photocoupler 8, diode 9, and fuse in the order of cable 0〆-B. The principle of protection for the interface circuit 6 is as described above, but protection for the indoor electrical equipment 5 requires components such as a varistor or an arrester 13 having a withstand voltage between terminals or less. The operating principle is the same as above except that the short circuit current passes through the varistor 13.
本発明によれば、接続ケーブルの誤接続をしても、信号
線入力側に設けられた半導体制御素子に、短絡電流が流
れ、開放形過電流防止器が作動して短絡電流による回路
部品の破損を免かれるため、製品の信頼性、サービス性
が著しるしく向上する。According to the present invention, even if the connection cable is incorrectly connected, a short circuit current flows through the semiconductor control element provided on the signal line input side, and the open type overcurrent preventer is activated, causing damage to the circuit components due to the short circuit current. Since damage is avoided, product reliability and serviceability are significantly improved.
第１図は、回転数制御セパレート形空気調和装置の電気
系統図、第２図は、第１図の回路で、−千人を端子０′
に、端子Ｂを端子Ｄ′に誤接続した／′場合の等価回路
図、第３図は、第２図に示す回路に、本発明を実施した
場合の等価回路図、第４図は、第１図の回路で、本発明
を実施し、端子Ｂと端子Ｃ′、端子０と端子Ｂ′を誤接
続した場合の等価回路図である。
１・・・商用電源、２・・・パワーリレー、３・・・イ
ンバータ装置、４・・・可変速圧縮機モータ、５・・・
室内電気回路、６・・・制御信号のインターフェイス回
路、７・・・送信用ホトカプラ、８・・・受信用ホトカ
プラ、９・・・ダイオード、１０・・・トライアック、
１１・・・抵抗、１２・・・ヒユーズ、１３・・・バリ
スタ或いはアレスタ。
′ｒ；１ 日
１！−２閏Figure 1 is an electrical system diagram of a separate air conditioner with rotation speed control, and Figure 2 is the circuit shown in Figure 1, with terminals 0'
3 is an equivalent circuit diagram when terminal B is incorrectly connected to terminal D'. FIG. 3 is an equivalent circuit diagram when the present invention is implemented in the circuit shown in FIG. FIG. 1 is an equivalent circuit diagram when the present invention is implemented in the circuit shown in FIG. 1 and terminals B and C' and terminals 0 and B' are incorrectly connected. DESCRIPTION OF SYMBOLS 1... Commercial power supply, 2... Power relay, 3... Inverter device, 4... Variable speed compressor motor, 5...
Indoor electrical circuit, 6... Control signal interface circuit, 7... Photocoupler for transmission, 8... Photocoupler for reception, 9... Diode, 10... Triac,
11...Resistor, 12...Fuse, 13...Varistor or arrester. 'r；1 1 day! -2 leaps
Claims (1)
、該主制御回路より該従制御回路に電力を供給する複数
の電力伝送線と、該主制御回路と該従制御回路の信号の
やりとりをする複数の信号伝送線により接続される制御
回路システムにおいて、該従制御回路の信号線入力側の
一部に、開放形過電流防止器と成る値以上の電流が通電
するとオン状態を維持する半導体制御素子とを直列に接
続した回路を設けたことを特徴とする命令七骨尋誤挿入
防止回路。 ２、室内ユニットと室外ユニットと、それぞれのユニッ
ト間を２本の電力伝送線と２本の信号線で接続した空気
調和装置において、室外ユニットの信号線入力端子間に
、電流ヒユーズ及びトライアックを直列に接続すること
を特徴とする控→Ｉ■ｌ剃１０誤挿入防止回路。 ３、トライアックのゲート端子は、抵抗を介して該トラ
イアックのＴ１端子或いはＴ２端子に結線された特許請
求の範囲第２項記載の誤挿入防止回路。[Claims] 1. It has a main control circuit and a slave control circuit, and each circuit has a plurality of power transmission lines that supply power from the main control circuit to the slave control circuit, and a plurality of power transmission lines that supply power from the main control circuit to the slave control circuit. In a control circuit system connected by multiple signal transmission lines for exchanging signals of the slave control circuit, a part of the signal line input side of the slave control circuit has a current exceeding a value that causes an open overcurrent preventer. 1. A circuit for preventing incorrect insertion of commands, characterized in that a circuit is provided in which a semiconductor control element is connected in series with a semiconductor control element that maintains an on state when energized. 2. In an air conditioner that connects an indoor unit and an outdoor unit with two power transmission lines and two signal lines between each unit, connect a current fuse and triac in series between the signal line input terminals of the outdoor unit. A circuit for preventing erroneous insertion of the I/I shaver 10, which is characterized by being connected to the . 3. The incorrect insertion prevention circuit according to claim 2, wherein the gate terminal of the triac is connected to the T1 terminal or T2 terminal of the triac via a resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59067674A JPS60211252A (en) | 1984-04-06 | 1984-04-06 | Erroneous connection preventing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59067674A JPS60211252A (en) | 1984-04-06 | 1984-04-06 | Erroneous connection preventing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60211252A true JPS60211252A (en) | 1985-10-23 |
Family
ID=13351777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59067674A Pending JPS60211252A (en) | 1984-04-06 | 1984-04-06 | Erroneous connection preventing circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60211252A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1158253A3 (en) * | 2000-05-23 | 2003-02-05 | Mitsubishi Denki K.K. | Control circuit for an air conditioner |
| DE102008045139A1 (en) * | 2008-09-01 | 2010-03-04 | Endress + Hauser Flowtec Ag | Opto-electronic device with a built-in safety device |
-
1984
- 1984-04-06 JP JP59067674A patent/JPS60211252A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1158253A3 (en) * | 2000-05-23 | 2003-02-05 | Mitsubishi Denki K.K. | Control circuit for an air conditioner |
| DE102008045139A1 (en) * | 2008-09-01 | 2010-03-04 | Endress + Hauser Flowtec Ag | Opto-electronic device with a built-in safety device |
| US8314413B2 (en) | 2008-09-01 | 2012-11-20 | Endress + Hauser Flowtec Ag | Optoelectronic device with a built-in fuse mechanism |
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