JPS5932389A - Controller for motor by optical signal - Google Patents

Abstract

PURPOSE:To prevent an effect by electric noises by constituting a switching circuit by an optical fiber and an optical switch. CONSTITUTION:When the optical switches 16, 17 are operated by operating a push-button, light-shielding bodies are removed from the insides of slits among the optical fibers 14 and 18, 15 and 19. Consequently, beams from a light source 10 reach photoelectric converters 11, 12, an auxiliary relay 13 and a relay 9 are controlled by a logic circuit on the basis of electric outputs from the photoelectric converters 11, 12 under the states, and the motor 1 is started and stopped. Accordingly, thereis no possibility that the motor is subject to electric noises, and the motor can be lightened.

Description

[Detailed description of the invention] The present invention relates to an improvement in a control device for use in the field of labor.

Conventionally, devices having various electric circuits have been used for 11L motion control.

These are all manual (for example, push-button type) or automatic (external input detection type such as pressure, YjiL degree, etc.) switches. 1 from the power cable for electric bales
The disadvantage is that it is easily susceptible to 1L atmospheric noise, which interferes with proper control. Also, since current flows through the control circuit, explosion-proof means are required when the switch is placed in an explosion-proof area. Further FC, switch money iIEwJ to hunt
It is convenient to bundle the control #*- with the power cable and create a single 41-wire power cable for the power cable that needs to be placed near the machine, but in this case, the noise from the power 111-power cable can be reduced. WJJ 111I because 4 is extremely thin PL and there are problems such as voltage being induced from the power cable in the control 11E.
! There are disadvantages such as having to use shielded wire as l'jac/di.

The present invention provides an improved 1llI control device tffi&! which does not have the drawbacks of the conventional cage machine control device as described above. to serve
The purpose is to come out.

That is, the uninvented #L motor control device uses optical signals, including a light source, an optical switch, a photoelectric converter, a source fiber that guides light from the light source to the source switch,
And the original fiber for asking nine from the above original switch to the above photoelectric converter? In preparation, power 1 to 1jL movement center according to the electrical output of the upper B Phi light 111 conversion word! The main contactor in the armpit has a face distance of 6tL, and is characterized by an air circuit such as 4 connections/blocking with 4 contacts such as a mouth or thyristor.

Hereinafter, an exemplary embodiment of the apparatus of the present invention will be further explained with reference to the drawings.

1N is a schematic gland diagram of the control device according to the present invention. 1
9.3 is the power for the electric motor'd
Ruru is in class T. Direction, 2 indicates that it is set inside the controller. The power disconnection 3 is provided with a breaker or disconnecting switch 4, an overcurrent 1) V 5 and a main contactor 6. A control section 8 is connected to the power line 11 via a fuse 7. Connected to the control unit 8 are a main contactor V-9, a light source 10, a photoelectric converter 11, 12, and an auxiliary 'JL'-13 for excitation.

(3) In the same way, the open side 2 part 8 has electrical circuits, logic circuits, etc.
1nru. The light source 10 has 4 rA of original fiber 14.15.
are located close to each other, and the original fiber 14 transmits light to the optical switch 16? 4, the original fiber 15 is the original switch 17
To the light 4<.

The end of the original fiber 18 is located close to the optical converter 11, and the end of the original fiber 19 is located close to the photoelectric converter 12.
the ends of which are located close together. The optical fiber 18 guides the output light from the source switch 16 to the all-photoelectric converter 11, and the source fiber 19 guides the output light from the source switch 17 to the photoelectric converter 12.

Here, the optical switch 16 may be, for example, a manual switch similar to a former pushbutton switch.Inside the optical switch 16, the ends of the optical fibers 14 and 18 are connected by forming slits. 9. Push button operation V (the light shielding body can be put in and out of the slit). Also, the light switch 17 is an automatic switch that automatically operates in response to external inputs such as pressure and temperature (4). When the light is turned on, the light-transmitting body attached to the movable element, which moves in response to external human power, is automatically inserted into the slit.

For example, the light shielding body of the optical switch may have a light shielding rate of 100%,
Further, the light shielding rate may be less than 100%.

The photoelectric converters 11 and 12 generate electrical outputs r in response to the output optical signals of the optical switches 16 and 17, respectively, and by inputting this to the logic circuit of the control s8, the 'wL' of the photoelectric converters The relay 0 and the auxiliary relay 13 are controlled to open and close the main contactor 6 according to the output of energy. For example, an optical switch 16Fi manual power switch 1IJ
Used for starting and stopping J-1.

By operating the control button, the light from the light source 10 is completely removed from the slit between the P optical fibers 14 and 18, and the light from the light source 10 reaches the photoelectric converter 11. Auxiliary Rin-1 for the silent output and - for the abuse
8 is fully activated, relay 9 is fully activated, and this causes p main contactor 6? r: Close, 1 to start motive 1. On the other hand, by pushing a light shield into the slit between the optical fibers 14 and 18 by pressing the button, light from the light beam 10 passes through, and not enough violet sources reach the photoelectric converter 11. State optical VTF converter 11! Based on the energy output, the auxiliary relay 13 and relay 9t are controlled by a logic circuit, thereby causing the main contactor 6 to fully open and the motor 1 to stop. Further, the optical switch 17 is used to automatically start and stop the electric motor 1 according to external input such as pressure. In other words, is the pressure below the set value? By inputting the input, the light shield is automatically removed from the slit between the 9-element fibers 15 and 19, and the light from n400 million is transferred to the photoelectric converter 1.
2, by inputting a pressure exceeding the universal standard value, a continuous beam is automatically inserted into the slit between the optical fibers 16 and 19, and the light from the light source 10 is blocked and the photoelectric converter is connected. 11 does not receive enough light. This p
1 Starting and stopping of the electric motor 1 is carried out in the same manner as in the case of the upper lattice movement. 3. Two main switches 16 and 17
The opening and closing of the pupil contactor 6 can be controlled in a desired manner by adding a cooking circuit 8.

The concrete parts in Figure 1 are light switches 16 and 1.
7, the light source 1u is shared δ, but a separate light source may be provided for each switch. In history, it is of course possible to use the optical switch U even if it has one to several stages as desired. As the source switch, it is also possible to use a four-way switch, or even a switch tone with continuous output.

In this case, 7 is used as the art circuit of the control section, which separates the electrical output of the photoelectric detector according to the output difference as described above.

In addition, use the auxiliary V-13, the relay for the live contactor, the DKf Iriskuu for the soil contactor, and the Judou Kamizuko t- for the gate control, and connect the 4 cows to the main body (7). It is also possible to start and stop the electric excitation switch 1 by turning off the electric excitation switch 1.

In the present invention*t+ control device, the switch tg is set as described above.
Since the L path is formed by the Button, the 7 Eyebar, and the original switch, there is no need to worry about receiving electrical noise, and @electrification can be done with the P component. Furthermore, even if the switch is installed in a fan-proof area, there is no need to take any explosion-proof measures. Furthermore, when placing the switch 'ft near the electric motor, it is necessary to connect the moving power wire and the control mH, that is, the original fiber and the t end to one composite '#!
In this case, the switch circuit is not affected by the power source at all, so accurate control is possible, and the number of wires can be reduced, making wiring work easier. can be simplified.

[Brief explanation of drawings]

Figure 1 is a schematic wiring diagram of the inventive control device. Niden 1dJ Shin 3: Power 'Kamezo' 42 Breaker or Disco power switch (8) 52 Overcurrent V-6: Main contactor 1: Fuse 8: Control section 9; Light source 11.12: Optical radio wave dying 13: Auxiliary relay 14.15.18.19+
Original fiber 16.17: Optical switch

Claims (1)

[Claims] In the IKIfiiJ device of the electric motor, there is a light source, an optical switch, a photoelectric converter, an original fiber for guiding the source from the optical switch to the above-mentioned switch, and a source fiber for guiding the source from the upper source switch to the above photoelectric converter. The main contactor of the power cable to the power line is opened and closed depending on the electrical output of the optical 1. A motive control device based on the original signal VC, which is based on the electric circuit r as shown in FIG.