JP2001286168A - Motor starter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a motor starter which saves an installation space and has a simple structure for assembling. SOLUTION: The motor control circuit is mounted on a printed circuit board except the main circuit apparatus, terminals of each circuit element on the substrate led to its block terminals properly short-circuit with jumper leads. The motor starter therefore can be made with making its circuit easily, saving its installation space, manufacturing it easily and coping with a specification change easily by making the control circuit except the main circuit equipment with modules coping with order specifications, providing on the board with terminal blocks CN3, CN6 which lead out terminals of relays and the like, completing the circuit by wire wrapping and the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric motor control device which can cope with various electric motor control specifications.

[0002]

2. Description of the Related Art Many large and small motors are used in ships, especially large ships, and a collective starter panel of the motors is often installed to centrally control these motors.

In this collective starter panel, a control device including a main circuit portion and a control circuit portion is provided for each electric motor.
A plurality of control devices are usually stored in the collective starter panel of the surface. In general, the control device often includes various control functions and display functions as an option in addition to simple start and stop control of the electric motor. Therefore, a flexible circuit is required. For this reason, in the past, relays and timers and the like were individually arranged and wired between them. However, there was a problem that a remarkably large space was required and wiring work was frequent.

FIGS. 10 and 11 are circuit diagrams showing an example of the prior art in which the above-mentioned problem is solved. In these figures, the circled numbers 5X, 5, 4, 6X, 43
X, 28X1, 28X2, 86, 20X, 20Y are relays, T1, T2, 2 are timers, LAL
1, LAL2 is a warning lamp. In FIG. 10, this control device includes a circuit breaker # 1, an electromagnetic switch # 2, an overcurrent relay # 3, and a transformer # 4 as devices of a main circuit portion, and a start button # 5 of a motor as a control circuit portion. And a printed wiring board # 7 provided with a stop button # 6 and a relay shown in FIG. Such an electric circuit is a general control circuit for a motor for a ship, and thus a detailed description of the circuit is omitted.

The start control operation of the motor M of this control device is as follows. When the breaker # 1 is turned on and the start button # 5 is pressed, the relay 4 is operated, the coil 88 is excited, and the electromagnetic switch # 2 is turned on. It turns ON and the electric motor M starts. In the stop control operation, when the stop button # 6 is pressed, the relay 5X operates and its b contact 5X is turned off, the excitation of the relay 4 connected in series is canceled, the excitation of the coil 88 is canceled, and the electromagnetic switching is performed. The heater # 2 is turned off and the motor M stops. When the overcurrent relay # 3 operates, the contact 5 is mechanically operated.
1 is turned off, the relay 4 that has been excited via the a contact 86 of the relay 86 and the a contact 88 of the relay 88 is de-energized, and the motor M stops.

In this conventional example, as an option, a button unit # 8 for remote operation is provided with a start button # 5 and a stop button # 6 so that the start and stop operations of the motor can be performed at a position away from the collective starter panel. They are provided in parallel. Further, as another option, a contact signal operated by the pressure or air temperature of circulating oil in an air compressor in which the electric motor is used is captured. That is, the contact # 9 is provided so that the electric motor stops when the pressure in the compressor exceeds a specified value.
A contact # 10 is provided so as to stop the electric motor when the voltage becomes equal to or less than a specified value. When the circulating oil pressure is insufficient, the motor is forcibly stopped or a warning lamp LAL1 is used.
A contact # 11 is provided for the purpose of turning on. Further, a contact # 12 for stopping the electric motor when the air temperature becomes high or lighting the warning lamp LAL2 is provided.

The control circuit portion of the conventional control device as described above constitutes a circuit used for a basic start / stop function and frequently required optional functions on a printed wiring board # 7. Relays 28X1, 28X2, 86, 20X, and 20 to satisfy optional functions that cannot be realized by the circuit on the printed wiring board, for example, the optional functions related to the compressor described above.
Circuit elements such as Y and timer 2 were required.

Further, wiring to be connected to the printed wiring board # 7 is performed by attaching wiring to a connector and inserting the connector into a terminal on the printed board. However, since only one wire can be attached to one terminal of the connector, a separate terminal block # 24 was required just to connect the wiring as shown in FIG. Note that the printed wiring board # 7 may vary considerably depending on the start-up method or the like, and thus several types of basic patterns are prepared.

[0009]

However, although this prior art is considerably improved over the previous art, it requires a large number of circuit elements such as a relay 28X1 in addition to the printed wiring board # 7. Space and wiring problems have not been solved. Further, the printed wiring board # 7 needs to be provided with the portions J1 to J4 for jumper wiring in order to expand the versatility as much as possible, so that a troublesome manual soldering work is also required. Further, there is a problem that a specialist engineer must go on a business trip to add, change, or delete a circuit device when a specification is changed after being mounted on a ship.

In order to solve such a problem, a CP
It is possible to use a device called a sequencer using U, but there is a problem in terms of price such as the need to create software.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an inexpensive motor control device which is compact, has simple wiring, and can be manufactured in a short time.

[0012]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a first aspect of the present invention is a control device for controlling starting and stopping of a motor, and the control device corresponds to various control functions of the motor. It has a printed wiring board including possible circuit elements, and the printed wiring board is provided with a terminal group capable of forming a circuit satisfying a specified control function by being selectively short-circuited.

With this configuration, it is possible to comply with various control specifications without the necessity of providing an additional control component or a separate printed circuit board only by appropriately shorting the terminal group.
Space saving and wiring work can be reduced.

In the motor control device according to the second aspect of the present invention, the terminal group is of the insertion / removal type and the movable terminal block is provided with the short-circuiting leg. For example, a device that satisfies various specifications can be easily produced simply by performing crossover processing on the movable terminal block alone. Also, when there is a specification change instruction, it can be easily changed on site.

In the motor control device according to the third aspect of the present invention, since the exciting coil circuit and / or the relay whose contact circuit is connected to the terminal group are mounted on the printed wiring board, the control device can perform various controls. A relay that is frequently used can be used efficiently.

According to a fourth aspect of the present invention, in the electric motor control device, the printed wiring board is housed in a compact housing by stacking the standard board alone or an additional board for satisfying optional specifications and the standard board. Space can be reduced.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to an embodiment shown in FIGS. The control function and the logical configuration of control of the motor control device according to this embodiment are substantially the same as those according to the prior art. In the following description, among the reference numerals with “#”, those substantially the same as those in the prior art are denoted by the same reference numerals as those in the conventional technology, and the description of the individual reference numerals is omitted. . For other symbols, FIG.
To the circuit diagrams shown in FIGS.

FIG. 2 is a front view of a centralized starter panel in which six sets of motor control devices according to this embodiment are housed, and the front panel of the uppermost control device is omitted for explanation. In FIG. 2, the control device includes a main circuit device including a circuit breaker # 1, an electromagnetic switch # 2, an overcurrent relay # 3 and a transformer # 4, a control module # 13, and a front panel mounted inside. Operation module # 1 provided
4 As shown in FIG. 1, the control module # 13 is configured such that various connectors and fuses that can be inserted and removed are exposed on a surface of a compact iron plate housing, and easily mounted on a bottom plate of the control device. It is mounted so that it can be removed.

FIG. 3 to FIG. 5 are circuit diagrams of the motor control device of this embodiment. Most of the circuits other than the equipment of the main circuit and the operation module # 14 consist of a standard board # 15 and an additional board # 16. It is configured on a printed wiring board. In the figure, relays 43X, 5X, 5A, 4, 4C, 88X, and 6X, each of which is surrounded by a circle, have timers YT1, YT2, YT3, relays T1Y, T2Y, T3Y, Y1, Y2, Y5, Y
6, Y7, Y8 are mounted on the additional board # 16,
The terminal of each connector is indicated by “≪” or “≫”.
In the figure, portions surrounded by dotted lines are circuit elements provided outside the control device.

On the standard board # 15, normally required circuits such as the relay 4 and the relay 5A for starting and stopping the motor are fixedly formed by printed wiring. Although not shown, a circuit required by a frequently used function among control functions not implemented in the present embodiment is also included in the standard board # 15 as a preliminary circuit.
Depending on the control specifications, the standard board # 15 alone may be used without using an additional board # 16 described later, and the control module # 17 at this time is shown in FIG. Therefore, the connectors used as standard,
That is, the connector CNH for the operation module # 14
1. Connector CN2P for transformer # 4, connector CN1P for circuit breaker # 1 and electromagnetic switch # 2, connector CN2 for electromagnetic switch # 2 and overcurrent relay # 3, and for standard external circuits Connector CN1 is standard board #
15. Such an outer shape of the standard board # 15 is shown in FIG.

On the additional substrate # 16, there is a conventional technology shown in FIG.
Relays 28X1, 2 for optional functions shown in
Instead of the 8X2, 86, 20X, 20Y and timer 2, the relays Y5 and Y6, the relays Y2 and Y1, and the timer YT3 are included in FIGS. Although not shown, a preliminary circuit is also provided on the additional board # 16 so as to be able to support optional functions other than the optional functions (optional functions related to the compressor) in this embodiment.

FIG. 7 shows the outer shape of the standard board # 15 as a representative of the standard board # 15 and the additional board # 16.
A terminal block CN3 having a large number of terminals is provided on one side of these substrates. (For the additional board # 16, a part of the same terminal block CN6 is shown in FIG. 1.) These terminal blocks are insertion / extraction type, and the movable block # 18 has a number corresponding to the number of terminals. Many legs # 19 of the metal member are provided. If these metal legs # 19 are connected to each other by appropriate wires, and the movable block # 18 is inserted into the printed circuit board, the corresponding terminals on the board side are connected. FIG. 8 shows an example of a state where the legs # 19 are wrapped and connected to each other by a conductive wire # 20.

The terminals of the terminal block CN3 and the terminal block CN6 are represented by symbols "<" or ">" in FIGS. 3 to 5, and the line connecting these symbols is the above-described crossover #. 20. For example, in FIG. 4, line # 2 connecting “3B8>” and “<3A39”
1 is connected by the above-mentioned conductive wire.

As in the case of "<3A39", symbols "<" and ">" are described outside the frame indicating the printed wiring board including the standard board # 17 and the additional board # 18. This is what is supposed to be described in the frame so as not to complicate the drawing. Therefore, to explain this portion a little more, the wiring from the push button unit # 8 for remote operation enters the standard board # 15 via the terminal C11 of the connector CN1,
Connected to “<3A39” via wiring # 22,
21 is connected to “3B8>”.

Further, the above-mentioned auxiliary circuit, for example, the exciting coil and the contact of the auxiliary relay (not shown) are also printed wiring to the terminal block CN3 or the terminal block CN6.
The terminal can be easily provided with a new function by wire wrapping.

Further, the troublesome wiring process which has conventionally been performed on the terminal of the circuit element or the like from which the wiring derived from the printed wiring board is derived can be easily performed on the printed circuit board side in such a terminal block. There is also.
For example, the portion indicated by # 23 in FIG. 3 is a portion of the overcurrent relay # 3, and the terminals 2A1, 2A2, 2A3, and 2A of the connector CNH1 are printed by wiring on the terminal numbers shown in the standard board. Connected
Line # 24 is connected by the above-mentioned crossover. As is clear from this figure, the contact 51 housed in the overcurrent relay # 3 and one terminal of the RESET button have the same potential. In this part, in the case of the prior art, as shown in FIG. 9, one wire is led out from the terminal 2A2 of the connector, and the contact 51 and one terminal of the RESET button are connected to each other on the side of the overcurrent relay # 3 by a crossover. It was necessary to work.

In the manufacture of the motor control device of the present embodiment having the above-described configuration, the control module # 13 is required if the additional board # 18 is required, and the control module # 17 is required if the additional board # 18 is not required. And a movable block # of the terminal block CN3 and the terminal block CN6.
18 is subjected to wire wrapping, and this movable block # 18 is inserted into a substrate. Then, a breaker # 1, an electromagnetic switch # 2, on the back and bottom plate of each control device of the collective starter panel,
Attach an overcurrent relay # 3, etc., and install a transformer # 4
Control module # 13 or control module # equipped with
17 is attached. Operation module # 1 on the front panel
4, and each connector may be connected to the control module.

When the specification is changed after the production, the movable block # 2 is wire-wrapped according to the changed specification.
0 is prepared, each connector is removed, the control module is removed from the collective starter panel, and the movable block # 1 is removed.
It is sufficient to replace 8 and return to the original state.

Although the embodiments of the present invention have been described above, the embodiments of the present invention disclosed above are not limited to the embodiments described above.
This is merely an example, and the scope of the present invention is not limited to the above embodiment of the present invention. The scope of the present invention is defined by the appended claims, and is intended to include all modifications within the scope and meaning equivalent to the appended claims.

[0030]

The present invention is embodied in the above-described embodiment. The control circuit of the electric motor, other than the main circuit device, is configured on a printed board, and the terminals of each circuit element on the board are led out to block terminals. Since the block terminals are appropriately short-circuited by crossover wires, it is possible to easily configure a circuit according to the order specifications, thereby saving space, simplifying production, and easily adapting to specification changes. .

[Brief description of the drawings]

FIG. 1 is an external perspective view of a control module housed in a motor control device according to an embodiment of the present invention.

FIG. 2 is a front view of the collective starter panel in which the control device for the electric motor of FIG. 1 is housed, with a part of a front panel omitted.

FIG. 3 is a circuit diagram of the motor control device of FIG. 1;

FIG. 4 is a circuit diagram of the motor control device of FIG. 1;

FIG. 5 is a circuit diagram of a control device for the electric motor of FIG. 1;

FIG. 6 is an external perspective view of a control module according to another embodiment.

FIG. 7 is a printed wiring board built in the control module of FIG. 1;

FIG. 8 is a terminal block used for a printed wiring board.

FIG. 9 is a partial circuit diagram illustrating advantages of the present invention.

FIG. 10 is a circuit diagram of a conventional motor control device.

FIG. 11 is a circuit diagram of a conventional motor control device.

FIG. 12 is a terminal block used in a conventional motor control device.

[Description of Signs] # 1 Circuit breaker # 2 Electromagnetic switch # 3 Overcurrent relay # 4 Transformer # 13 Control module # 14 Operation module # 15 Standard board # 16 Additional board # 17 Control module # 18 Movable block # 19 Leg # 20 crossing

Claims (4)

[Claims] 1. A control device for controlling starting and stopping of an electric motor, wherein the control device has a printed circuit board including circuit elements capable of supporting various control functions of the electric motor, and the printed circuit board includes A control device for an electric motor, comprising: a terminal group capable of forming a circuit satisfying a specified control function by selectively shorting. 2. The control device for an electric motor according to claim 1, wherein said terminal group is of an insertion / removal type, and said short-circuiting leg is provided on a movable-side terminal block. 3. The motor control device according to claim 1, wherein a relay having an excitation coil circuit and / or a contact circuit connected to the terminal group is mounted on the printed circuit board. 4. The printed circuit board according to claim 1, wherein the printed circuit board is housed in a compact housing with a standard board alone or an additional board for satisfying optional specifications and the standard board superposed on each other. The control device of any one of the electric motors.