JPS62277095A - Controller for motor - Google Patents

Abstract

PURPOSE:To eliminate the necessity of preparing various types of ROMs by automatically switching control systems of a main circuit by coding a connector provided on a sole control printed board to eliminate an erroneous operation. CONSTITUTION:Main circuits M1, M2, M3 and a common controller C0 are used, and the connections between the man circuits and the controller are executed by switching between the connectors 43, 44, 45 coded, for example, by 3 bits and a common connector 42. Since the voltage and the number of phases can be coped with alterations by altering the printed board of the main circuit connected by the coded connectors in this manner, no erroneous operation occurs. Therefore, the abnormal operation of a motor is eliminated to obviate the necessity of preparing various types of ROMs.

Description

[Detailed Description of the Invention] 6. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a control device for a motor having a converter section and an inverter section, and in particular a main circuit section for driving the motor. The present invention relates to a control device for an electric motor, in which a controller for controlling the electric motor is connected through a coded connector.

[Conventional technology]

Conventional devices of this type are shown in Figure 2, (B) and (C).
As shown in the figure, the control side and main circuit side are temporarily designed to be printed separately due to their current capacity, noise, etc.

It was installed. In other words, Fig. 2 (4) shows the single phase 100
It is a circuit diagram showing a V-system control device, in which 0 (11 is an AC input terminal, α is a converter circuit including a diode element (Dl), (1 ■ is a relay contact, (6) is a current separator 1) A resistor, α→ is a smoothing capacitor, α→ is an inverter circuit including a transistor (Tr+), (iQ is a three-phase motor, α″1′) is a speed detector such as a pulse generator, and α is a control circuit. This control circuit a→ sends a control signal to the inverter circuit (1υ) in response to the difference signal between the detection signal from the speed detector αη and the speed command value signal given to the terminal α→, and thereby the electric motor (10 The speed of the main circuit section (Ml
) and the IH control section (C1) including the control circuit 0 mark were each constructed from separate printed boards for the reasons mentioned above. In addition, Figures 2 (B) and (C) are circuit diagrams showing cases where the AC input is three-phase 200V and single-phase 200V, respectively, and the three-phase motors @ and (to) are the same as the motor qQ. be. However, in these six cases, the converter circuit (11
), H, 01) phase number, withstand voltage, smoothing capacitor a
< , (c), (b) withstand voltage and capacity, relay contact (6)
.

The current capacities of (e), 02 and resistors αJ, @, (to), or the current capacities, breakdown voltages, etc. of inverter circuits αe, (c), (to) are different from each other.

[Problem that the invention seeks to solve]

In the conventional device as described above, as shown in Fig. 6, when the printed boards of the main circuit sections (Ml), (Mt), etc. are replaced due to a change in the type of motor or the rating of input AC,
The printed circuit boards of the control units (CI), (CX), etc. were separately equipped with dip switches e*, sυ, or ROM (read only memory) programs that could be switched in response to the above-mentioned changes. Therefore, due to a setting error of trout υ,
Q. There was a problem that (g) behaved abnormally.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a motor control device that can smoothly switch connections between a plurality of types of main circuit sections and a single control section.

[Means for solving problems]

According to an embodiment of the present invention, codes for identifying the voltage, frequency of one phase, type of motor, etc. are provided on the printed board of the main circuit section, and by connecting the connector based on the combination of the codes, the main circuit The control unit printed board and a single control unit printed board are connected, and the control content of the main circuit unit can be changed using this coded connector.

[Effect]

The control device according to the present invention automatically switches the control method of the main circuit section that drives the electric motor by coding the connector provided on the single control section printed board.

[Practice of the invention]

FIG. 1 is a schematic configuration diagram of a control device showing an embodiment of the present invention, in which the main circuit sections (Ml), (M
l ), (Ml ) and a common control unit (CO),
The connection between these main circuit sections and the control section is, for example, a connector (g) coded with 6 bits.

(C) and the common connector (6) are switched and connected.

In the device configured as described above, for example, single phase, 100V, 5
If the QHz code is expressed as ``o, o, o', and the three-phase, 200V, 60Hz code is expressed as ``1, 11'', there are many types of coded connectors (I's new information is the next one). This can be easily achieved.

@o, o, i" Single phase, 100V, 60Hz"
o, i, o" Single phase, 200v, 50Hz" 0
,1,1',1 phase,200'/,60
Hz"1,0.0" three-phase, 100V, 50Hz
"1,0.1" three-phase, 100V, 60Hz"
1.1.0” three-phase, 200V, 50Hz [Effects of the Invention] As detailed above, according to the present invention, the motor control section only needs to be a single printed board, and the connector coded on this By changing the printed circuit board of the main circuit connected to the motor, it is possible to cope with changes in voltage and number of phases, so there is no malfunction.Therefore, abnormal operation of the motor is eliminated, and the ROM (IJ - only memory) can be changed. ) There is an effect that there is no need to prepare many kinds of products.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of a control device according to an embodiment of the present invention, FIG. 2 (4), (B), and (C) are circuit diagrams of a conventional device, and FIG. 5 is a schematic configuration diagram of a conventional device. Chiru. In the figure, αq, (a), 00 are AC input terminals, α, 0
1), (31) is the converter circuit, (6), @
, G2 scored once and screamed.翰, (to) is a resistor, α→, (c), (b) are smoothing capacitors, cypress, 4 (to) is an inverter circuit, α*,
ue, o* are electric motors, α'h, @, @ are speed detectors, α→, Kan, (B) are Se1] Gobe, (1→, ■, U
* is the input terminal for the speed command signal, the value 0°0 is the dip switch, the i-tsuru (9) is the connector, (Ml) ~ (Ms
) is the main circuit section, (Co), (CI) to (CI
) is the 5th control section.

Claims (1)

[Claims] A main circuit section including a converter section that converts AC input to DC and an inverter section that converts this DC to AC output, a motor driven by the output AC of the inverter section, and a motor controlled by a speed detection signal of the motor. The main circuit section and the control section are connected by a connector based on a combination of codes, in which one or more of the number of AC input phases, voltage, frequency, type of motor, etc. is coded. A control device for an electric motor, characterized in that a control method for the electric motor is automatically switched.