JPH0237755B2 - FUKAKANSHISEIGYOSOCHI - Google Patents
FUKAKANSHISEIGYOSOCHIInfo
- Publication number
- JPH0237755B2 JPH0237755B2 JP12961182A JP12961182A JPH0237755B2 JP H0237755 B2 JPH0237755 B2 JP H0237755B2 JP 12961182 A JP12961182 A JP 12961182A JP 12961182 A JP12961182 A JP 12961182A JP H0237755 B2 JPH0237755 B2 JP H0237755B2
- Authority
- JP
- Japan
- Prior art keywords
- load
- relay
- potential
- circuit
- command
- 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
- 238000012544 monitoring process Methods 0.000 claims description 24
- 238000004891 communication Methods 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
- H04Q9/06—Calling by using amplitude or polarity of dc
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Selective Calling Equipment (AREA)
Description
【発明の詳細な説明】 本発明は、負荷監視制御装置に関する。[Detailed description of the invention] The present invention relates to a load monitoring control device.
遠方にある負荷の運転・停止を制御すると共に
負荷の状態を監視する従来の負荷監視制御装置に
おいては、１つの負荷に対し、監視盤側の監視回
路の２つの表示灯駆動回路と制御盤側の負荷投入
指令用及びしや断指令用のリレーを夫々連絡する
２本の連絡線を設けて上記負荷に関する信号の授
受を行うようにしていることにより、１つの負荷
増に対して２本の連絡線を増設しなければならな
い為、負荷数が多くなると連絡線の本数が非常に
多くなり、保守・点検が相当に面倒で、費用もか
さむという問題があつた。 In a conventional load monitoring and control device that controls the operation and stopping of a load located far away and monitors the status of the load, two indicator light drive circuits are required for one load: a monitoring circuit on the monitoring panel side and a monitoring circuit on the control panel side. By providing two communication lines that connect the relays for the load on command and the relay for the shearing off command, respectively, and transmitting and receiving signals related to the load, two wires are connected for one load increase. Since it is necessary to install additional communication lines, as the number of loads increases, the number of communication lines becomes extremely large, which poses a problem in that maintenance and inspection are considerably troublesome and costs increase.
本発明は、上記した従来の問題点に鑑みてなさ
れたもので、負荷投入指令及び負荷しや断指令、
スイツチの入操作時に監視盤側及び制御盤側間に
流れる信号電流の方向が互いに逆方向となる構成
とすることにより、ｎの負荷増に対して連絡線の
増加本数がｎ本で済み、しかも従来回路に大巾な
変更を加える必要のない負荷監視制御装置を提供
することを目的とする。 The present invention has been made in view of the above-mentioned conventional problems, and includes load application commands, load shedding commands,
By configuring the structure so that the direction of the signal current flowing between the monitoring panel side and the control panel side is opposite to each other when the switch is turned on, the number of communication lines can be increased by n for an increase in load of n. It is an object of the present invention to provide a load monitoring control device that does not require major changes to conventional circuits.
以下、本発明の一実施例を図について説明す
る。 Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
第１図において、１は負荷監視制御装置の信号
電源であつて、監視盤側に設けられ、正負極Ｐ及
びＮと両極間電圧の中間電位を持つ中間極Ｇを具
えている。２及び３は夫々制御盤側（現場側）に
設けられた高電位極及び低電位極であつて、高電
位極２には電位線４を介して正極Ｐの電位EPが
与えられ、低電位極３には電位線５を介して負極
Ｎの電位ENが与えられている。６は連絡線であ
つて、監視盤側にある監視回路７と制御盤側にあ
る制御リレー回路８とを連絡している。 In FIG. 1, reference numeral 1 denotes a signal power supply of the load monitoring control device, which is provided on the monitoring panel side and includes an intermediate pole G having a potential intermediate between the positive and negative poles P and N and the voltage between the two poles. 2 and 3 are a high potential electrode and a low potential electrode provided on the control panel side (field side), respectively, and the potential E P of the positive electrode P is applied to the high potential electrode 2 via the potential line 4, and the low potential electrode A potential E N of a negative electrode N is applied to the potential electrode 3 via a potential line 5 . A communication line 6 connects a monitoring circuit 7 on the monitoring panel side and a control relay circuit 8 on the control panel side.
監視回路７は、ホトカプラの発光部７１にダイ
オード７２を接続して直列接続してなる単一方向
通電の停止表示灯駆動回路と、別のホトカプラの
発光部７３にダイオード７４を直列接続してなる
単一方向通電の運転表示灯駆動回路とが通電方向
を逆にして中間極Ｇに並列接続された回路を有
し、該回路に連絡線６の一端が接続されている。
７５及び７６は夫々調整抵抗であつて夫々停止表
示灯駆動回路及び運転表示回路に発光部７１及び
７３と直列に挿入されている。発光部７１及び７
３が夫々発する光を受ける受光部（図示しない）
が導通すると監視盤上にある対応する停止表示灯
及び運転表示灯（いずれも図示しない）が点灯す
る。発光部７１及び７３には夫々負荷投入指令ス
イツチ７７及び負荷しや断指令スイツチ７８が並
列接続されている。制御リレー回路８、高電位極
２に接続された負荷投入指令用のリレー（電磁リ
レー）８１と、低電位極３に接続された負荷しや
断指令用のリレー（電磁リレー）82を有し、両リ
レー８１，８２は夫々切換用のリレー８３の接点
８３ａ，８３ｂを介して連絡線６の他端に接続さ
れている。このリレー８３は第３図に示す負荷で
あるモータＭの負荷駆動回路に挿入されている。
同図において、９１は負荷電源、９２はしや断
器、９３ａは電磁スイツチ９３の第１接点であ
る。電磁スイツチ９３は負荷投入指令用リレー８
１の接点８１ａ及び負荷しや断指令用リレー８２
の接点８３ａを介して制御電源９４の正負極間に
挿入されており、リレー８３は電磁スイツチ９３
の第２接点９３ｂを介して上記正負極間に挿入さ
れている。又電磁スイツチ９３の第３接点９３ｃ
は負荷投入指令用リレー８１の自己保持回路を構
成する。 The monitoring circuit 7 includes a unidirectional energized stop indicator light drive circuit formed by connecting a diode 72 in series to a light emitting part 71 of a photocoupler, and a diode 74 connected in series to a light emitting part 73 of another photocoupler. It has a circuit in which a unidirectionally energized operation indicator light drive circuit is connected in parallel to the intermediate pole G with the direction of energization reversed, and one end of the communication line 6 is connected to this circuit.
Reference numerals 75 and 76 are adjustment resistors, respectively, which are inserted in series with the light emitting parts 71 and 73 in the stop indicator light drive circuit and the operation display circuit, respectively. Light emitting parts 71 and 7
A light receiving part (not shown) that receives the light emitted by 3
When conductive, the corresponding stop indicator light and operation indicator light (both not shown) on the monitoring panel light up. A load on command switch 77 and a load off command switch 78 are connected in parallel to the light emitting parts 71 and 73, respectively. The control relay circuit 8 includes a relay (electromagnetic relay) 81 connected to the high potential pole 2 for commanding load on, and a relay (electromagnetic relay) 82 for commanding load shutoff connected to the low potential pole 3. , both relays 81 and 82 are connected to the other end of the communication line 6 via contacts 83a and 83b of a switching relay 83, respectively. This relay 83 is inserted into a load drive circuit of a motor M, which is a load shown in FIG.
In the figure, 91 is a load power supply, 92 is a disconnector, and 93a is a first contact of an electromagnetic switch 93. The electromagnetic switch 93 is the relay 8 for load application command.
1 contact 81a and load shedding command relay 82
The relay 83 is inserted between the positive and negative poles of the control power source 94 via the contacts 83a of the electromagnetic switch 93.
It is inserted between the positive and negative electrodes via the second contact 93b. Also, the third contact 93c of the electromagnetic switch 93
constitutes a self-holding circuit of the load application command relay 81.
負荷投入指令用リレー８１と負荷しや断指令用
リレー８２の作動電流はホトカプラの発光部７１
及び７３の作動電流よりも大きくなるように設定
されており、監視回路７では負荷投入指令スイツ
チ７７又は負荷しや断指令スイツチ７８の投入時
に、投入されたスイツチを流れる電流のレベルが
発光部７１，７３の作動電流レベルを超えてリレ
ー８１，８２の作動電流レベルまで増大するよう
に、その回路抵抗が調整抵抗７５，７６により調
整されている。 The operating current of the load-on command relay 81 and the load-off command relay 82 is controlled by the light emitting part 71 of the photocoupler.
In the monitoring circuit 7, when the load on command switch 77 or the load off command switch 78 is turned on, the level of the current flowing through the turned on switch is set to be larger than the operating current of the light emitting part 71. , 73 to the operating current level of relays 81, 82, the circuit resistance thereof is adjusted by adjusting resistors 75, 76.
次に、この装置の動作について説明する。 Next, the operation of this device will be explained.
第１図及び第２図はモータＭの運転が停止され
ている場合の回路状態を示している。この運転停
止状態では、正極Ｐ−連絡線４−高電位点２−負
荷投入指令用リレー８１−リレー８３の接点８３
ａ−連絡線６−ダイオード７２−発光素子７１−
中間極Ｇからなる信号回路を通つて実線矢印の向
きに信号電流（発光部７１の作動電流）が流れ、
発光部７１が発光し図示しない停止表示灯が点灯
している。この時、上記信号回路の抵抗値が高い
為に上記電流のレベルはリレー８１の作動電流レ
ベルより低く、該リレー８１は動作しない。 1 and 2 show the circuit state when the operation of the motor M is stopped. In this operation stop state, positive electrode P - connection line 4 - high potential point 2 - load application command relay 81 - contact 83 of relay 83
a-Connection line 6-Diode 72-Light emitting element 71-
A signal current (operating current of the light emitting part 71) flows in the direction of the solid arrow through the signal circuit consisting of the intermediate pole G,
The light emitting section 71 emits light and a stop indicator light (not shown) is lit. At this time, since the resistance value of the signal circuit is high, the level of the current is lower than the operating current level of the relay 81, and the relay 81 does not operate.
負荷投入指令スイツチ７７が閉路されると、発
光部７１が該スイツチ７７により短絡される為、
該スイツチ７７を通して信号電流が流れ、電流レ
ベルがリレー８１の作動電流レベルまで増大す
る。この結果、発光部７１は発光停止して停止表
示灯が消灯し、他方、負荷投入指令用リレー８１
が動作して電磁スイツチ９３が附勢され、その各
接点９３ａ，９３ｂ，９３ｃを閉じる。従つて、
モータＭが運転され始める。又、切換用リレー８
３が附勢されるのでその接点が切替り、第３図に
示す如く、負荷しや断指令用リレー８２が連絡線
６に接続される。この為、連絡線６を流れる電流
の向きは逆方向となり、中間極Ｇ−発光部７３−
ダイオード７４−連絡線６−リレー８３の接点８
３ｂ−負荷しや断指令用リレー８２−低電位極３
−電位線５−負極Ｎからなる信号回路を図示一点
鎖線で示す矢印の向きに信号電流（発光部７３の
作動電流〕が流れ、発光部７３が発光して図示し
ない運転表示灯が点灯する。この時も、上記信号
回路の抵抗値が高い為、電流レベルがリレー８２
の作動電流レベルより小さく、該リレー８２は動
作しない。 When the load application command switch 77 is closed, the light emitting section 71 is short-circuited by the switch 77.
A signal current flows through the switch 77 and the current level increases to the operating current level of the relay 81. As a result, the light emitting unit 71 stops emitting light, the stop indicator light goes out, and on the other hand, the load application command relay 81
operates to energize the electromagnetic switch 93 and close its contacts 93a, 93b, and 93c. Therefore,
Motor M begins to operate. Also, switching relay 8
3 is energized, its contacts are switched, and the load cutoff command relay 82 is connected to the connection line 6, as shown in FIG. Therefore, the direction of the current flowing through the connecting wire 6 is reversed, and the direction of the current flowing through the connecting wire 6 is reversed, and the intermediate pole G - the light emitting part 73 -
Diode 74 - connection line 6 - contact 8 of relay 83
3b - Load shedding command relay 82 - Low potential pole 3
A signal current (operating current of the light emitting section 73) flows in the direction of the arrow shown by the dashed line in the signal circuit consisting of - potential line 5 - negative electrode N, the light emitting section 73 emits light, and an operation indicator light (not shown) lights up. At this time as well, since the resistance value of the signal circuit is high, the current level is low at relay 82.
, the relay 82 will not operate.
この運転状態にある時に、負荷しや断指令スイ
ツチ７８が投入されると、発光部７３が該スイツ
チ７６により短絡される為、図に二点鎖線で示す
如く、スイツチ７８を通して信号電流が流れ、電
流レベルが負荷しや断指令用リレー８２の作動電
流レベルまで、上昇する。この為、該リレー８２
が動作し、接点８２ａが開いて電磁スイツチ９３
の附勢が解かれる結果、接点９３ａ，９３ｂび９
３ｃが開路し、モータＭが電源９１からしや断さ
れて停止し、又リレー８３の附勢が解かれ、第１
図及び第２図の回路状態に戻る。勿論、発光部７
３は発光停止する為、上記運転表示灯は消灯す
る。 When the load cutoff command switch 78 is turned on in this operating state, the light emitting section 73 is short-circuited by the switch 76, so a signal current flows through the switch 78 as shown by the two-dot chain line in the figure. The current level rises to the operating current level of the load cutoff command relay 82. For this reason, the relay 82
operates, contact 82a opens and electromagnetic switch 93
As a result, contacts 93a, 93b and 9
3c is opened, the motor M is immediately cut off from the power supply 91 and stopped, and the relay 83 is deenergized and the first
Returning to the circuit state shown in FIG. Of course, the light emitting part 7
3 stops emitting light, so the above operation indicator light goes out.
以上の如く、本発明によれば、監視回路が接続
される極の電位を、制御リレー回路の負荷投入指
令用及び負荷しや断指令用リレーが夫々接続され
る極の電位の中間電位とすると共に、監視回路２
つの表示灯駆動回路を互いに逆向きの単一方向通
電回路とし監視回路と制御リレー回路をつなぐ連
絡線に２方向の電流を流す構成としたことによ
り、一つの負荷増に対し１本の連絡線を増設すれ
ばよいので、負荷数が増加すればするほど連絡線
の本数が従来に比して大巾に少なくて済む上、従
来の２つの表示灯駆動回路を逆並列接続にし、上
記２つのリレーを切替える為の切替用リレーを附
加し、電源から上記中間電位を取出すだけでよい
ので部分的な複雑化を招くことなく上記効果が得
られる利点がある。 As described above, according to the present invention, the potential of the pole to which the monitoring circuit is connected is set to the intermediate potential of the poles to which the load-on command and load-off command relays of the control relay circuit are connected, respectively. In addition, the monitoring circuit 2
By using two indicator light drive circuits as unidirectional current-carrying circuits with opposite directions and a configuration that allows current to flow in two directions through the connecting wire that connects the monitoring circuit and the control relay circuit, one connecting wire is required for each increase in load. As the number of loads increases, the number of connection lines can be significantly reduced compared to the conventional method. Since it is only necessary to add a switching relay for switching the relays and extract the intermediate potential from the power supply, there is an advantage that the above effects can be obtained without causing partial complication.
第１図は本発明による負荷監視制御装置の実施
例の回路図、第２図は上記実施例の負荷運転時の
回路図、第３図は上記実施例における負荷駆動回
路図である。
１……信号電源、２……高電位極、３……低電
位極、４，５……電位線、６……連絡線、７……
監視回路、８……制御リレー回路、７１，７３…
…ホトカプラの発光部、７２，７４……ダイオー
ド、７５，７６……調整抵抗、７７……負荷投入
指令スイツチ、７８……負荷しや断指令スイツ
チ、８１……負荷投入指令用リレー、８２……負
荷しや断指令用リレー、８３……切換リレー、８
３ａ，８３ｂ……接点。
FIG. 1 is a circuit diagram of an embodiment of a load monitoring and control device according to the present invention, FIG. 2 is a circuit diagram of the above embodiment during load operation, and FIG. 3 is a load driving circuit diagram of the above embodiment. 1...Signal power supply, 2...High potential pole, 3...Low potential pole, 4, 5...Potential line, 6...Connection line, 7...
Monitoring circuit, 8... Control relay circuit, 71, 73...
...Photocoupler light emitting part, 72, 74...Diode, 75, 76...Adjusting resistor, 77...Load application command switch, 78...Load cutoff command switch, 81...Load application command relay, 82... ...Relay for load shedding command, 83...Switching relay, 8
3a, 83b... Contact.
Claims (1)
間電位を持つ中間極を有する信号電源、上記正負
極の電位を夫々導いて制御盤側に高電位極と低電
位極を作る為の第１の電位線及び第２の電位線、
上記高電位極と低電位極の夫々に接続された負荷
投入指令用リレー及び負荷しや断指令用リレー及
び両リレーを切換える為の負荷投入直後及び負荷
しや断直後に動作する切換用リレーの接点を具え
る制御リレー回路、上記中間電極に接続される監
視回路、上記制御リレー回路と上記監視回路をつ
なぐ連絡線を有し、この監視回路が、電流阻止方
向を互いに逆にする単一方向通電の２つの表示灯
駆動回路を具えると共に両表示灯駆動回路を夫々
の通電向きにバイパス可能な負荷投入指令スイツ
チと負荷しや断指令スイツチを具えていることを
特徴とする負荷監視制御装置。1. A signal power source installed on the monitoring panel side and having a positive and negative electrode and an intermediate electrode having an intermediate potential between the two electrodes, and a signal power source for guiding the potential of the positive and negative electrodes to create a high potential pole and a low potential pole on the control panel side, respectively. a first potential line and a second potential line,
A load on command relay and a load shedding command relay connected to each of the high potential pole and low potential pole, and a switching relay that operates immediately after load application and immediately after load shedding to switch both relays. A control relay circuit comprising a contact, a monitoring circuit connected to the intermediate electrode, and a communication line connecting the control relay circuit and the monitoring circuit, the monitoring circuit having a unidirectional current blocking direction opposite to each other. A load monitoring control device comprising two indicator light drive circuits for energization, and a load on command switch and a load off command switch that can bypass both indicator light drive circuits in their respective energization directions. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12961182A JPH0237755B2 (en) | 1982-07-27 | 1982-07-27 | FUKAKANSHISEIGYOSOCHI |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12961182A JPH0237755B2 (en) | 1982-07-27 | 1982-07-27 | FUKAKANSHISEIGYOSOCHI |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5921193A JPS5921193A (en) | 1984-02-03 |
| JPH0237755B2 true JPH0237755B2 (en) | 1990-08-27 |
Family
ID=15013738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12961182A Expired - Lifetime JPH0237755B2 (en) | 1982-07-27 | 1982-07-27 | FUKAKANSHISEIGYOSOCHI |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0237755B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62115745U (en) * | 1986-01-16 | 1987-07-23 | ||
| JPS6321877A (en) * | 1986-07-16 | 1988-01-29 | Oki Electric Ind Co Ltd | Manufacture of semiconductor element |
| JPH03248439A (en) * | 1990-02-26 | 1991-11-06 | Rohm Co Ltd | Manufacture of compound semiconductor device |
| DE19653291C1 (en) | 1996-12-20 | 1998-04-02 | Pepperl & Fuchs | Sensor and evaluation system for end position and threshold value detection |
-
1982
- 1982-07-27 JP JP12961182A patent/JPH0237755B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5921193A (en) | 1984-02-03 |
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