JPH0769072B2 - Wrong connection protection circuit for air conditioner - Google Patents
Wrong connection protection circuit for air conditionerInfo
- Publication number
- JPH0769072B2 JPH0769072B2 JP59211316A JP21131684A JPH0769072B2 JP H0769072 B2 JPH0769072 B2 JP H0769072B2 JP 59211316 A JP59211316 A JP 59211316A JP 21131684 A JP21131684 A JP 21131684A JP H0769072 B2 JPH0769072 B2 JP H0769072B2
- Authority
- JP
- Japan
- Prior art keywords
- control circuit
- circuit
- power
- air conditioner
- transmission line
- 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.)
- Expired - Lifetime
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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
-
- 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)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
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
続して成る制御システムに係り、特に接続誤りによる回
路破損を防止する保護回路に関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control system in which a plurality of control circuits are connected by two or more types of connection lines, and in particular, a protection circuit for preventing circuit damage due to connection error. It is about.
本発明の対象となる従来回路を、回転数制御セパレート
形空気調和機を例として以下説明する。第３図は、該空
気調和機の電気系統図で、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は室内電気回路５からの制御信号
のインターフェイス回路である。端子A,B,C,Dの左側
は、室内電気品で、端子Ａ′,B′,C′,D′の右側は、室
外電気品であり、両電気品を４芯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
が、Ｃ−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。従って該４芯
ケーブルは、室内外の電気品を接続する端子が決まって
おり、接続する端子を誤ると、回路の一部を破損するこ
とがある。第４図は、電力供給端子A,Bと、信号入力端
子Ｃ′,D′が誤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、ケーブル線Ｃ′−Ａの順路で大きな短
絡電流が流れ、ホトカプラ８を破損することが多いた
め、製品では、注意札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、誤配線事故の恐れは完無ではな
かった。A conventional circuit to which the present invention is applied will be described below by taking a rotation speed control separate type air conditioner as an example. FIG. 3 is an electric system diagram of the air conditioner. 1 is a commercial power source, 2 is a power relay, 3 is an inverter device, 4 is a variable speed compressor motor,
Reference numeral 5 is an indoor electric circuit, and 6 is an interface circuit for control signals from the indoor electric circuit 5. The left side of the terminals A, B, C, D is an indoor electrical product, and the right side of the terminals A ', B', C ', D'is an outdoor electrical product. Connect both electrical products with a 4-core cable. There is. To the inverter device 3, the power relay 2 and A-
Electric power is supplied from the commercial power source 1 via the cables A'and BB ', and the operation mode, the number of revolutions, etc. from the indoor electric circuit 5 via the cables C-C' and DD 'and the interface circuit 6. Control signals are transmitted respectively. Therefore, in the four-core cable, terminals for connecting indoor and outdoor electrical products are fixed, and if the terminals to be connected are incorrect, a part of the circuit may be damaged. FIG. 4 is an equivalent circuit in the case where the power supply terminals A and B and the signal input terminals C ′ and D ′ are erroneously connected.
In the interface circuit 6, a large short-circuit current flows along the route of the transmission photocoupler 7, the reception photocoupler 8, and the cable line C′-A, and the photocoupler 8 is often damaged. Although it includes a sticker that clearly indicates, the risk of accidental wiring was not complete.
本発明は、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於て、上記２種の電
線を誤接続しても、運転をしないだけで、回路部品を破
損せず、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。The present invention has been made to solve the above inconvenience,
In a control circuit system having a plurality of circuit blocks connected by a power supply line and a signal transmission line, even if the above-mentioned two kinds of electric wires are erroneously connected, only the operation is not performed and the circuit parts are not damaged. It is to provide means for protecting the control system.
本発明は、誤接続配線により、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、誤接続配線を行っても、回路部品をなんら破損する
ことなく、回路を保護できるようにしたものである。The present invention has been made in consideration of the fact that erroneous connection wiring causes a great deal of damage to interface circuit components. Therefore, even if erroneous connection wiring is performed, the circuit can be protected without damaging the circuit components. It was done.
以下本発明の一実施例を備えた空気調和機を第１図，第
２図により説明する。第２図は第１図の本発明の電気回
路に於て、電力供給線の端Ａ・Ｂが、信号入力端子
Ｃ′,D′に接続された場合の等価回路を示し、パワーリ
レー２と室内電気回路５との配置関係を第１図とは逆に
図示しており、また、可変速圧縮機モータ４を省略して
いる。９は電磁継電器である。本回路の動作は、通常第
１図の如く各ケーブルが正常に接続され、電力伝送線が
接続された端子Ａ′・Ｂ′に電力が供給されると、イン
バータ装置３に接続された電磁継電器９のコイル9aに電
力が供給され、信号入力端子Ｃ′,D′間に設けられた接
点9bが閉状態となり、正常運転を行なう。An air conditioner having an embodiment of the present invention will be described below with reference to FIGS. 1 and 2. FIG. 2 shows an equivalent circuit when the terminals A and B of the power supply line are connected to the signal input terminals C ′ and D ′ in the electric circuit of the present invention shown in FIG. The arrangement relationship with the indoor electric circuit 5 is shown in the reverse of FIG. 1, and the variable speed compressor motor 4 is omitted. Reference numeral 9 is an electromagnetic relay. The operation of this circuit is as shown in FIG. 1. Normally, when the cables are normally connected and the power is supplied to the terminals A ′ and B ′ to which the power transmission lines are connected, the electromagnetic relay connected to the inverter device 3 is connected. Electric power is supplied to the coil 9a of No. 9 and the contact 9b provided between the signal input terminals C'and D'is closed, and normal operation is performed.
以上のように、第１図に示す正常にケーブルが接続され
た状態にあるときには、この実施例は、電磁継電器９を
備えていること以外、第３図に示した従来回路と同様の
動作を行なう。As described above, when the cable is normally connected as shown in FIG. 1, this embodiment operates in the same manner as the conventional circuit shown in FIG. 3 except that the electromagnetic relay 9 is provided. To do.
第２図に示すように、インバータ装置３の端子Ａ′,B′
がケーブルによって誤って室内電器回路５の信号端子C,
Dと接続され、また、インターフェイス装置６の端子
Ｃ′,D′がケーブルによって誤ってパワーリレー２の端
子A,Bと接続された場合には、端子Ａ′,B′に商用電源
１から電力が供給されず、このため、電磁継電器９のコ
イル9aに商用電源１からインバータ装置３を介して電力
が供給されないから、接点9bが開状態となり、端子
Ｃ′,D′間は開放状態となる。従って、端子Ｃ′,D′に
どのような電力が供給されても、電流が流れることな
く、インターフェイス回路６の送信用ホトカプラ７と受
信用ホトカプラ８を保護することが出来るという効果が
ある。As shown in FIG. 2, terminals A'and B'of the inverter device 3 are provided.
Is mistaken for the signal terminal C of the indoor electric circuit 5 by the cable,
If the terminals C'and D'of the interface device 6 are mistakenly connected to the terminals A and B of the power relay 2 by the cable, the commercial power source 1 supplies power to the terminals A'and B '. Is not supplied, and therefore the coil 9a of the electromagnetic relay 9 is not supplied with power from the commercial power source 1 through the inverter device 3, so that the contact 9b is opened and the terminals C'and D'are opened. . Therefore, no matter how much power is supplied to the terminals C'and D ', no current flows, and the transmitting photocoupler 7 and the receiving photocoupler 8 of the interface circuit 6 can be protected.
本発明によれば、接続ケーブルを誤接続をしても、信号
入力側に設けられた電力供給時閉となる電磁継電器等の
開閉器により回路破損を防ぐことが出来るという効果が
ある。According to the present invention, even if the connection cable is erroneously connected, there is an effect that a circuit breaker can be prevented by a switch provided on the signal input side, such as an electromagnetic relay that is closed when power is supplied.
第１図は、第３図に示す電気系統図に本発明を実施した
場合の電気系統図、第２図は、本発明を実施し、端子Ａ
と端子Ｃ′，端子Ｂと端子Ｄ′を誤接続した等価回路
図、第３図は、回転数制御セパレート形空気調和機の電
気系統図、第４図は、第３図の電気回路に於て、端子Ａ
を端子Ｃ′に、端子Ｂを端子Ｄ′に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……電磁継
電器。FIG. 1 is an electric system diagram when the present invention is applied to the electric system diagram shown in FIG. 3, and FIG.
And the terminal C ', and the terminal B and the terminal D'are erroneously connected. FIG. 3 is an electric system diagram of a rotation speed control separate type air conditioner, and FIG. 4 is an electric circuit of FIG. And terminal A
FIG. 6 is an equivalent circuit diagram in the case where is incorrectly connected to the terminal C ′ and the terminal B is connected to the terminal D ′. 1 ... Commercial power supply, 2 ... Power relay, 3 ... Inverter device, 4 ... Variable speed compressor motor, 5 ... Indoor electric circuit, 6 ... Control signal interface circuit, 7 ... Transmission photocoupler, 8 ... Photo coupler for reception, 9 ... Electromagnetic relay.
Claims (1)
御回路から該従制御回路に電力を供給するための電力伝
送線と、該主制御回路と該従制御回路との間の信号伝送
を行なうための信号伝送線とが該主制御回路と該従制御
回路との間に接続されてなる空気調和機において、 該従制御回路での該信号伝送線用の信号入力端子側に開
閉器を設けてなり、 該開閉器は、該従制御回路での該電力伝送線接続用の電
力入力端子に該主制御回路から該電力伝送線を介して電
力が供給されたときに閉状態となり、該主制御回路と該
従制御回路との間の該信号伝送線を介した信号伝送を可
能にすることを特徴とする空気調和機の誤接続保護回
路。1. A power transmission line comprising a main control circuit and a slave control circuit, for supplying power from the main control circuit to the slave control circuit, and between the main control circuit and the slave control circuit. In an air conditioner in which a signal transmission line for performing signal transmission is connected between the main control circuit and the sub control circuit, a signal input terminal side for the signal transmission line in the sub control circuit is provided. A switch is provided, and the switch is in a closed state when power is supplied from the main control circuit to the power input terminal for connecting the power transmission line in the slave control circuit through the power transmission line. An erroneous connection protection circuit for an air conditioner, which enables signal transmission between the main control circuit and the slave control circuit through the signal transmission line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59211316A JPH0769072B2 (en) | 1984-10-11 | 1984-10-11 | Wrong connection protection circuit for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59211316A JPH0769072B2 (en) | 1984-10-11 | 1984-10-11 | Wrong connection protection circuit for air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6191453A JPS6191453A (en) | 1986-05-09 |
| JPH0769072B2 true JPH0769072B2 (en) | 1995-07-26 |
Family
ID=16603924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59211316A Expired - Lifetime JPH0769072B2 (en) | 1984-10-11 | 1984-10-11 | Wrong connection protection circuit for air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0769072B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4936012B2 (en) * | 2008-04-23 | 2012-05-23 | 日立オートモティブシステムズ株式会社 | Stroke simulator |
| JP5225770B2 (en) * | 2008-07-08 | 2013-07-03 | アズビル株式会社 | Incorrect wiring detection device |
| CN106440278B (en) * | 2016-10-21 | 2019-02-26 | 珠海格力电器股份有限公司 | Air conditioner and electric heating protection method and device for air conditioner |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5869342A (en) * | 1981-10-21 | 1983-04-25 | Mitsubishi Electric Corp | Negative-phase preventing circuit for air conditioner |
-
1984
- 1984-10-11 JP JP59211316A patent/JPH0769072B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6191453A (en) | 1986-05-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |