JP2001025264A - Parameter setter for inverter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten a setting time for setting of a driving conditions at each control item. SOLUTION: When a key word selection mode is set by a mode switching key 14b, by depressing select key 14a to sequentially display key words for indicating functions on a 7-segment display unit 14g, and by depressing a definite key 14e as a keyword desired of selection is displayed, a control item select mode is set. Then, when the key 14a is depressed, relevant control items are displayed sequentially. By depressing the key 14e the control item desired to be selected is selected, a driving condition set mode is set. The drive conditions are increased or decreased and are displayed, by depressing the key 14a. By depressing the key 14e when the condition desired to be set is displayed, the condition is set corresponding to the control item.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parameter setting device for an inverter device, and to shorten a setting time for setting operation conditions for each control item in order to realize each required function required for inverter operation. It is devised so that it can be done.

[0002]

2. Description of the Related Art FIG. 3 is a block diagram showing an entire voltage type inverter device 10. This voltage type inverter device 10
Comprises a forward conversion unit 11, a smoothing capacitor unit 12, an inverse conversion unit 13, a parameter setting unit 14, and an inverter control unit 15.

The forward converter 11 is composed of a three-phase or single-phase bridge-type rectifier, and rectifies R, S, and T AC power supplied from an AC power source and converts it into DC power. The smoothing capacitor unit 12 smoothes the DC power output from the forward conversion unit 11.

[0004] The inversion section 13 is composed of three-phase switching arms. The switching operation of the switching elements constituting each arm converts the input DC power into a three-phase alternating current of an arbitrary voltage at an arbitrary frequency. Convert to electricity,
Output from output terminals U, V, W. This output power is supplied to, for example, the induction motor IM.

The switching operation of each switching element of the inverse converter 13 is performed by a control signal S output from the inverter controller 15. The control operation at this time sequentially selects a plurality of predefined control items, sets operating conditions for each of the selected control items, and is performed based on the set operating conditions. ing. For this purpose, the parameter setting device 14 performs selection of control items and setting of operating conditions.

FIG. 2 shows an outline of a key portion and a display portion of the parameter setting device 14. In the figure, reference numeral 14a denotes a selection key (▽, △) for selecting a control item or an operation condition;
4b is a mode switching key, 14c is an operation key, 14d is a stop key, 14e is a decision key, 14f is a reset key,
14g is a 7 segment display (7 segment LED).

The 7-segment display 14g includes a status display portion 14g-1 indicating each operation status mode (FWD, REV, FLT, LCL), a 7-segment LED display portion 14g-2, and a display data unit (Hz). , A,%, min
^-1 ).

Next, a procedure for setting the operating conditions of the inverter device 10 by the parameter setting device 14 will be described.

The power is turned on. It is confirmed that the 7-segment display 14g is in the control item selection mode, and if it is not in this mode, this control item selection mode is set. The display mode of the 7-segment display 14g includes an operation condition setting mode in addition to the control item selection mode, and these are switched by the mode switching key 14b.

By operating the selection key 14a, a control item to be selected is displayed on the 7-segment display 14g. 7
Since the segment display 14g is a 7-segment type,
Display patterns are limited. Therefore, a control item number is defined for each control item, and a control item number corresponding to the control item is displayed by operating the selection key 14a. The control item numbers are A1, A2,
It is a combination of alphanumeric characters, such as A3, B1, B2, and B3, and has a configuration in which it is arranged in a line in ascending order, such as A1, A2, A3, or A1-1, A1-2, A1- 3
May have a hierarchical structure as shown below. Press the select key (△) 14a and select the control item numbers A1, A2, A3
·················································································

When the control item number to be selected is displayed, the enter key 14e is pressed to select and confirm the control item.
Here, the state in the parameter setting device 14 switches from the control item selection mode to the operation condition setting mode. The operating conditions are displayed on the 7-segment display 14g. The operating conditions are changed using the selection key 14a. As for the operating conditions, a settable range and unit are determined for each control item. For example, the user presses the selection key (１４) 14a to increase the operating conditions, such as 1, 2, 3,..., And sequentially displays the increased operating conditions one by one. When the operating condition to be set is displayed, confirm key 14e
Press to select and confirm the operating conditions. At this time, the numerical value displayed on the 7-segment display 14g is set in the parameter setting device 14 as the operating condition of the selected control item. As a result, the mode shifts again to the control item selection mode, and the next control item can be selected.

Thereafter, the above steps are repeated to set the operating conditions of the control items necessary for realizing the function.

The other functions of the parameter setting unit 14 are as follows. That is, the operation key 14c is a key for instructing operation start for operating the inverter device 10 and driving the induction motor IM. When the operation key 14c is pressed, as described above, the selected control item is selected. Inverter device 1 based on the operating conditions set for each
0 is controlled and the operation is started.

The stop key 14d is a key for instructing the inverter device 10 to stop in order to stop the induction motor IM. The reset key 14f is a key for instructing release of the trip state when a trip occurs due to an abnormality in the induction motor IM or the inverter device 10.
The 7-segment display 14g is used for displaying the output frequency, current, voltage, and the like of the inverter during operation, in addition to the above-described display of the control item selection and the operation condition setting.

[0015]

However, the above-described prior art has the following first and second problems.

First, the first problem will be described. In order to realize each necessary function required for the inverter operation, it is necessary to sequentially display related control item numbers and set operation conditions. Control items that need to be set may be scattered, and in order to access them, an unnecessary control item number must be passed. This is because the parameter setting device 14 does not have a numeric key, so that the control item number cannot be directly input, and must be selected by sequentially increasing or decreasing the control item number. As a result, the operation of setting the control items increases, and it takes a lot of time.

Although a method of arranging control items in order for each function is conceivable, depending on the control items, one control item may relate to a plurality of functions. Even when there is a standard function and an optional function associated therewith, it is often the case that only standard parts of each function, which are frequently used, are collected and arranged in order to increase the setting work efficiency. In this case, even the related control items are separated from the array. That is, when the actual use frequency is considered, the arrangement of each function may not be optimal.

The above problem is solved by the acceleration / deceleration time (acceleration / deceleration function)
The case of setting is described as an example. Since the control items that are frequently used are arranged for each function, control items related to the acceleration / deceleration function are scattered. When performing normal operation and jogging operation, including optional functions, it is necessary to set all of these. In this example, it is necessary to pass control item numbers such as A2 to A9 which do not need to be set.

Control item number A0: Acceleration time in normal operation Frequently used A1: Deceleration time in normal operation Frequently used A2: Other frequently used parameter A3: (Parameter not set in acceleration / deceleration function)・ A10: Acceleration time in jogging operation Infrequently used A11: Deceleration time in jogging operation Infrequently used A12: Other parameters ・ (Parameters not set in acceleration / deceleration function) A25: Corresponding to external sequence input Acceleration time 1 Optional function A26: Acceleration time 2 corresponding to external sequence input A27: Acceleration time 3 corresponding to external sequence input A28: Deceleration time 1 corresponding to external sequence input A29: Deceleration time 2 corresponding to external sequence input A30 : Deceleration corresponding to external sequence input During 3 A31: Parameter · A40 not set other parameters: the external sequence input, whether to switch the acceleration and deceleration time setting.

Next, the second problem will be described. This problem,
It is difficult to select a related control item number from all control items. 14g 7-segment display
Since only the control item number is displayed, the setting is performed while looking at the setting table in which the control item number and the content are described. It takes time to find the relevant control item number from the table, and it is easy to forget to set. Note that a method of increasing the display information by using a liquid crystal or the like for the configuration of the display portion is also conceivable, but the cost increases.

An object of the present invention is to provide an inverter parameter setting device that can reduce the time required to set operating conditions for each control item in view of the above-mentioned prior art.

[0022]

According to the structure of the present invention, which solves the above-mentioned problems, a plurality of predetermined control items are sequentially selected by a parameter setting device, and operating conditions are set for each of the selected control items. In addition, in a device that causes an inverter control unit to perform a switching operation of an inverting unit of an inverter device based on a set operation condition, the parameter setting device includes a selection key, a mode switching key, and a confirmation key. And a 7-segment display, wherein the parameter setting unit displays the 7-segment display on the 7-segment display by associating alphanumeric characters with the display of the 7-segment display according to a fixed rule. When the mode is set to the keyword selection mode with the switch key,
Each time the selection key is pressed, each keyword which is a display for easily inferring each necessary function required for the inverter operation,
A function of sequentially circulating on the 7-segment display and displaying one at a time, and pressing the enter key when a keyword to be selected is displayed, selects and fixes the displayed keyword and enters the control item selection mode. Entering and re-arranging and re-arranging a plurality of control items related to the required function indicated by the selected and confirmed keyword, every time the selection key is pressed in this control item selection mode, the control item number of the re-arranged control item is A function for sequentially displaying one by one on the 7-segment display, and pressing the enter key when a control item number to be selected is displayed, selects and fixes the displayed control item number and sets an operation condition setting mode. And the operating conditions are displayed on the 7-segment display. When the selection key is pressed in the operating condition setting mode, the operating conditions are sequentially changed. When the operating condition is reduced and displayed on the 7-segment display and the displayed operating condition becomes the operating condition desired to be set and the confirmation key is pressed, the operating condition displayed at this time is selected and confirmed. After setting the function to be set as the operation condition of the control item corresponding to the item number and the operation condition of the control item corresponding to the selected and confirmed control item number, return to the control item selection mode and display the next control item on the 7-segment display. And a function of displaying a number.

[0023]

Embodiments of the present invention will be described below in detail with reference to the drawings.

First, a parameter setting device according to a first embodiment of the present invention will be described. FIG. 1 shows a control configuration of the parameter setting device 14 according to the first embodiment, and the outlines of a key portion and a display portion of the parameter setting device 14 are as shown in FIG.

Inside the parameter setting unit 14, a microprocessor (CPU) 141 and a non-volatile memory 1
42 are built-in. Note that the CPU 141 is a microprocessor for driving and controlling the inverter device. To operate the CPU 141, peripheral circuits such as an oscillator, a memory, and a reset unit are necessary, but these are not shown. The non-volatile memory 142 is a memory for storing attribute data of each control item.

The mechanical configuration of the parameter setting unit 14 is the same as that of the conventional one, but the processing function is different as described below.

The CPU 141 has a parameter setting unit 14
The following four software (programs) P1 that run at a predetermined cycle (perform processing operations)
To P4.

The first software P1 has a key input I
This is software that reads the signal of the / O port 141a and recognizes whether there is a change in the port signal. The second software P2 includes a mode switch key 14b
Is software that switches the panel mode (internal data monitoring, keyword selection mode, control item selection mode, operating condition setting mode) when is pressed. The third software P3 is software that performs internal processing such as data storage from the changed key and the current operation mode in each mode. The fourth software P4 is software for displaying control item numbers and operating conditions.

As shown in Table 1 below, a display corresponding to alphanumeric characters according to a certain rule is displayed on the 7-segment LED display portion 14g-2 of the 7-segment display 14g.
This is performed by the PU 141.

[0030]

[Table 1]

When the CPU 141 is in the keyword selection mode, the CPU 141 causes the 7-segment LED display portion 14g-2 to display each keyword, which is a display for easily estimating each necessary function required for the inverter operation. The correspondence between each required function and the displayed keyword is, for example, as shown in Table 2 below.

[0032]

[Table 2]

Further, the CPU 141 controls the control item number,
Data such as setting ranges and corresponding keywords are collectively tabulated and stored in the nonvolatile memory 142. The tabulated data is, for example, as shown in Table 3 below.

[0034]

[Table 3]

Further, when a predetermined keyword is selected and determined in the keyword selection mode, the CPU 141 extracts and rearranges control item numbers related to necessary functions indicated by the selected and determined keyword. For example, when a keyword indicating the acceleration / deceleration function is selected and determined, the state in which control item numbers related to the acceleration / deceleration function are extracted and rearranged is shown in Table 4 below.

[0036]

[Table 4]

As can be seen from Table 4, when the keyword indicating the acceleration / deceleration function is selected and determined, the control item numbers A0, A1, A10, A11, A25, A26, A2
7, A28, A29 and A30 are taken out and rearranged.

Here, the operation procedure will be described. When the mode switching key 14b is pressed, this is recognized by the software P1, the mode is switched by the software P2 in accordance with the operation of the mode switching key 14b, and the mode display corresponding to the mode is displayed by the software P4 on the 7-segment display 14g. Will be displayed.

Then, the operator operates the mode switching key 14b.
By pressing, a keyword selection mode in which keywords are displayed on the 7-segment display 14g is selected. Each of the displayed keywords is displayed so that the analogy of the function can be easily obtained (see Table 2).

When the selection key (△, ▽) 14a is depressed after entering the keyword selection mode, the CPU 141
Recognizes that the selection key 14a is pressed by the software P1 and selects the selection key 14a by the software P3.
The keyword is circulated according to the operation of the software P.
4, the keywords are sequentially circulated on the 7-segment display 14g and displayed one by one. For this reason, the keywords are cyclically displayed on the 7-segment display 14g, for example, as shown in Table 5 below.

[0041]

[Table 5]

When the keyword to be selected is displayed, the enter key 14e is pressed. The CPU 141 executes the software P
1 recognizes a change in the determination key 14e, and the software P3 compares the determined keyword with the keyword indicated in the attribute table of the control item, extracts a matching control item number, and rearranges it in the internal memory. . For example, when a keyword indicating the acceleration / deceleration function is selected and determined, as shown in Table 4, control item numbers A0, A1, A10, A
11, A25, A26, A27, A28, A29, A3
Extract 0 and rearrange.

As described above, when the keyword to be selected (for example, the keyword indicating the acceleration / deceleration function) is displayed, the enter key 14e is pressed, and when the displayed keyword is selected and confirmed, the control item selection mode is entered. Then, the control item number group with the smallest number (for example, A0) among the control item number groups rearranged by the keyword is displayed on the 7-segment display 14g by the software P4.

When the selection key 14a is depressed, the CPU 1
41 recognizes the change of the selection key 14a by the software P1 and sequentially displays the rearranged control item numbers on the 7-segment display 14g. When the selection key (△) 14a is pressed, the displayed control item number increases and the display is limited to the maximum value. The state in which the rearranged control item numbers increase is shown in Table 6 below. When the selection key (▽) 14a is pressed, the displayed control item number decreases and the display is limited to the minimum value. The state where the rearranged control item numbers are decreasing,
It is shown in Table 7 below.

[0045]

[Table 6]

[0046]

[Table 7]

When the enter key 14e is pressed when the control item number (for example, A0) to be selected is displayed, the CPU 14
1 recognizes the change of the determination key 14e by the software P1, selects and determines the control item number (for example, A0) displayed at that time, and enters the operation condition setting mode.

When the operation condition setting mode is entered and a certain period of time has elapsed, the control item numbers and the initial operation conditions are alternately displayed at a constant period, as shown in Table 8 below.

[0049]

[Table 8]

When the enter key 14e is further depressed, the operating conditions are flickered at regular intervals, as shown in Table 9 below.

[0051]

[Table 9]

When the selection key (△, ▽) 14a is pressed, the CPU 141 recognizes the change of the selection key 14a by the software P1, increases or decreases the operating condition by the software P3, and increases or decreases the operating condition by the software P4. Is displayed on the 7-segment display 14g.

When the enter key 14e is pressed when the operating condition to be selected is displayed, the CPU 141 recognizes a change in the enter key 14e by the software P1 and displays the operating condition (numerical value: 100. 0)
Is set as the operating condition (numerical value: for example, 100.0) of the control item corresponding to the previously selected and determined control item number (for example, control item number A0).

Operating condition (numerical value) of the control item selected and confirmed
Is set again, the operation returns to the control item selection mode (return), and the same operation as described above is performed to set the next control item number.
(For example, control item number A1) is selected, and the operating condition of the control item corresponding to the next control item number (for example, control item number A1) is set.

The above operation is repeated one after another, and each control item number (for example, A0, A1, A10, A11, A25, A
26, A27, A28, A29, A30) are set for each control item.

When the setting is completed, the mode switching key 14b
Is pressed, the CPU 141 recognizes the change of the mode switching key 14b by the software P1 and
With 2, the mode is exited to another mode such as a monitor.

Next, a second embodiment of the present invention will be described. In the second embodiment, for one control item,
A plurality of keywords are provided so that one control item is set as an argument for the plurality of keywords.
Table 10 shows a specific example.

[0058]

[Table 10]

Next, a third embodiment of the present invention will be described. In the third embodiment, the keyword selection mode and the control item selection mode in the first embodiment are configured as the same mode. This eliminates the need to shift to the control item selection mode after selecting a keyword.

[0060]

As described above in detail with the embodiments, according to the present invention, since the related control item number can be extracted from the keyword, each of the necessary functions required for the inverter operation can be realized. The setting time for setting the operating conditions for each control item can be reduced.

In the related art, when setting control items, the setting operation is performed with reference to a control item setting table in which the control item numbers and their functions are described. Therefore, related control item numbers are scattered. In such a case, it took time to search for the control item number, but in the present invention, since the related control item numbers can be rearranged and taken out, there is no need to search for the control item number, and the setting time is reduced. .

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a control mechanism of a parameter setting device according to the present invention.

FIG. 2 is an external view showing a key portion and a display portion of the parameter setting device.

FIG. 3 is a configuration diagram showing an inverter device.

[Explanation of symbols]

 Reference Signs List 10 Inverter device 13 Inverting unit 14 Parameter setting unit 14a Selection key 14b Mode switching key 14e Enter key 14g 7-segment display 15 Inverter control unit

Claims (1)

[Claims] A parameter setting device sequentially selects a plurality of predetermined control items, sets operating conditions for each of the selected control items, and controls an inverter based on the set operating conditions. A parameter setting device, comprising: a selection key, a mode switching key, a determination key, and a 7-segment display. The parameter setting device has a function of displaying the 7-segment display and alphanumeric characters corresponding to each other according to a certain rule, and displaying the 7-segment display. When the mode selection key is set to the keyword selection mode, the selection key is pressed. Each keyword, which is a display for easily inferring each necessary function required for inverter operation, A function to sequentially go around the display and display one by one, and if the above-mentioned confirmation key is pressed when the keyword to be selected is displayed, the displayed keyword is selected and confirmed, and the control item selection mode is entered. A plurality of control items related to the required function indicated by the determined keyword are taken out and rearranged. Each time the selection key is pressed in this control item selection mode, the control item number of the rearranged control item is changed to the 7-segment. When the control key is pressed while the control item number to be selected is displayed on the display one by one and the control item number to be selected is selected, the displayed control item number is selected and entered, and the operation condition setting mode is entered. The operating conditions are displayed on the 7-segment display, and when the selection key is pressed in this operating condition setting mode, the operating conditions are sequentially increased or decreased. Is displayed on the serial 7-segment display,
If the confirmation key is pressed when the displayed operating condition becomes the operating condition to be set, the displayed operating condition is set as the operating condition of the control item corresponding to the selected and confirmed control item number. When the operating condition of the control item corresponding to the selected and confirmed control item number is set, the function returns to the control item selection mode and has the function of displaying the next control item number on the 7-segment display. Parameter setting device of the inverter device.