JPS62201081A - Parameter setting device for motor controller - Google Patents

Abstract

PURPOSE:To enable many parameters to be set with simple and economical composition, by arranging a parameter regulating means, a parameter selecting means for estimating the sorts of the parameters, and a parameter storing means. CONSTITUTION:A coincidence discriminating means 4 compares a parameter regulating means 1 for determining the action, the function, and the like of a motor controller with the present value of a parameter specified by the parameter selecting means 2 of a parameter storage means 6. The parameter storage means 6, composed of a nonvolatile storage means retaining the storage even if the main power source of the motor controller is cut off, and stores the value of the parameter regulating means 1 at a position specified by the parameter selecting means 2 when the state of a coincidence storage means 5 coincidence.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a parameter setting device for selecting, changing or setting functions and operations of a motor control device.

Conventional technology In recent years, with the rapid development of Hower electronics and microelectronics, applications such as servo motors and motors controlled at variable speed by inverters have expanded.
It is becoming more diverse. Along with this, motor control devices are required to have many functions, and moreover, users are required to be able to easily select functions that suit them from among a wide variety of functions. In response to these demands, manufacturers can select parameters such as the output frequency, soft start and soft down time settings, or the voltage/frequency pattern of the output voltage, for example in the case of inverter equipment. We are responding as follows.

An example of a conventional parameter setting device for a motor control device will be described below with reference to the drawings.

FIG. 9 is a block diagram showing the configuration of a conventional parameter setting device. In FIG. 9, reference numeral 1 denotes a parameter adjustment means, and in the case of analog parameters, an analog voltage generator using a variable resistor is generally used, and an A/D converter is also used if necessary. Further, in the case of digital parameters, a changeover switch, a short circuit bottle, a dip switch, etc. are generally used. Furthermore, even in the case of digital parameters, the same configuration as in the case of analog parameters may sometimes be adopted due to the convenience of the interface. 7
is an interface between the parameter adjustment means 1 and the motor control device 8, and its configuration varies depending on the device; a simple one may consist of just wiring, while a complicated one may involve slight modification of parameters or , may also control transmission control.

The operation of the parameter setter of the motor control device configured as described above is simple; the motor control device 8 reads the set value of the parameter adjustment means 1 through the interface 7 and performs the operation corresponding to the read value.

Problems to be Solved by the Invention However, in the above configuration, the parameter adjustment means itself also serves as a means for storing or holding the values, so there are as many variable resistors, changeover switches, or one or more digits as there are types of parameters. A dip switch etc. is required,
There are limits in terms of cost and size of the parameter setting device, and there is a problem that it cannot sufficiently meet the increasingly diverse and sophisticated required specifications.

The present invention has been made in view of this problem, and it is an object of the present invention to provide a parameter setting device for a motor control device that can set a large number of parameters with a simple and inexpensive configuration.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention separates the storage (retention) function of the parameter adjustment means in the conventional example into a separate parameter storage means. In other words, the multiple parameter adjustment means in the conventional example are -
This is replaced by a combination of parameter adjustment means, parameter selection means for specifying the type of parameter, and parameter storage means for storing the parameter values in respective predetermined locations.

Furthermore, in addition to the above-mentioned basic configuration, the current value of the parameter and the value to be set or adjusted are configured to be prohibited from being updated as long as they do not match by a means for determining whether the current value matches the value to be set or adjusted and a means for storing the result. .

Effect of the Invention With the above-described configuration, the present invention allows the - number of parameter adjustment means to set parameters of types within the limit of the storage capacity of the parameter storage means or the number of types that can be specified by the parameter selection means, whichever is smaller. This is possible, and by using an electric memory as the parameter storage means, it can be easily made smaller and larger in capacity, so the number of parameter types can be dramatically increased compared to the conventional example. Additionally, inconveniences arising from the fact that the parameter adjustment means is common to all parameters, that is, discrepancies between the current value of the parameter and the setting or adjustment value that may occur when the parameter specification changes, can be avoided by updating the parameter. This is prohibited while the current value and the adjusted value do not match, and this change is prevented by always starting from the current value. That is, it is possible to smoothly change parameters necessary for the motor control device.

Embodiment Hereinafter, a parameter setting device for a motor control device according to an embodiment of the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram of a parameter setting device in a first embodiment of the present invention. In FIG. 1, reference numeral 1 denotes parameter adjustment means for determining the operation, functions, etc. of the motor control device;
2 is a parameter selection means for specifying a specific parameter among a plurality of parameters; 3 is a parameter selection means 2;
selection change detection means for detecting a change in the designation of 4;
compares the parameter adjustment means 1 with the current value of the parameter specified by the parameter selection means 2 of the parameter storage means 6, which will be described later, and determines whether they match or the difference is less than a predetermined value. Alternatively, a match judgment means 5 stores the match state of the match judgment means 5 and determines whether the magnitude relationship has changed from the previous comparison (hereinafter referred to as a match). When the specification by the selection means 2 is changed, the coincidence storage means becomes in a mismatched state, 6 indicates when the state of the coincidence storage means 5 is a coincidence,
This is a parameter storage means that stores the value of the parameter adjustment means 1 in a location designated by the parameter selection means 2.

FIG. 5 is a flowchart showing the contents of a program when the parameter selection change detection means 3, coincidence determination means 4, coincidence storage means 5, and parameter storage means 6 of FIG. 1 are realized by a microcomputer. Hereinafter, the present invention will be explained in detail according to this flowchart.

When the program starts, it continues while repeating the parameter setting process (step 1) and controlling other motor control devices. However, the flowchart only describes the parameter setting process. Next, the parameter setting process will be explained. First, the value of the parameter selection means 2 is read (step 10), and a check is made to see if it has changed (step 11). If there is a change, the coincidence storage means 5 is set to a mismatch state (step 12). Next, the value of the parameter adjustment means 1 is read (step 13), and the state of the coincidence storage means 5 is checked (step 14). If the value matches, the value corresponds to the parameter specified by the parameter selection means 2 of the parameter storage means 6. The contents of the portion are updated with the values of the parameter adjustment means 1 (step 18). In this case, return from the subroutine and return to the beginning of the program.

If there is a mismatch in step 14, the parameter storage means 6 is not updated, and the parameter portion specified by the parameter selection means 2 of the parameter storage means 6 is read (step 15), and the parameters read in step 10 are read. It is compared with the value of adjustment means 1 (step 16).

As a result, if there is a mismatch, the program returns to the beginning again. If there is a match in step 16, the match storage means 5 is brought into a match state and step 17) returns from the subroutine and returns to the beginning of the program again.

As described above, according to this embodiment, the parameter storage means 6
By providing the selection means 2, it is possible to easily increase the types of parameters without adding parameter adjustment means. Further, by providing the means 4 for determining whether the content of the parameter storage means 6 matches the value of the parameter adjustment means 1, parameters can always be changed starting from the current value, and smooth changes can be made.

Note that if a battery-backed memory, an electrically erasable FROM, or a non-volatile memory such as a magnetic bubble is used as the parameter storage means 6, the parameter values can be adjusted every time the main power of the motor control device is turned off. There is no need to redo it (it is obvious that it will happen).

Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a block diagram of a parameter setting device of a motor control device in a second embodiment of the present invention. In FIG. 2, parameter adjustment means 1, parameter selection means 2, parameter selection change detection means 3, The determining means 4 and the coincidence storing means 5 have the same structure as that shown in FIG.

The difference from the configuration in FIG. 1 is that the parameter storage means 6 in FIG. 1 is configured as follows.

The data selection means 6e selects the data to be stored in the first storage means 6C as the data held in the second storage means 6d using non-volatile storage means when the reset detection means 6a of the motor control device detects a reset. , reset), the value of the parameter adjustment means 1 is maintained, and the parameter save command means 6b retains the contents of the first storage means 6C in the second storage means 6d. For example, an undervoltage detection means for detecting that the voltage of the main power supply of the motor control device has become lower than a predetermined voltage can be considered.

The operation of the parameter setting device of the motor control device according to the second embodiment of the present invention constructed as described above will be explained according to the flowchart shown in FIG. Here, a case will be explained in which the parameter hold command means 6b is an undervoltage detection means.

When the program starts, first, as a parameter registration process (step 2), all contents of the second storage means 6d are copied to the first storage means 6c. The parameters are now in the same state as before the main power to the motor control device was turned off.

Subsequently, the same parameter setting process as in the first embodiment is performed (step 1), and an undervoltage check is performed (step 3). After that, repeat steps 1 and 3. Step 1
The parameter setting process in step 2 is the same as in FIG. 5b explaining the first embodiment, so the explanation is omitted, and
Parameter registration and checking of undervoltage in step 3 will be explained with reference to FIGS. 6b and 6c.

First, parameter registration will be explained according to the flowchart shown in FIG. 6b. First, the first storage means 6C
1 Initialize to 1 the pointer i that specifies the i-th parameter stored in the second storage means 6d.Step 20
), the value of the i-th parameter stored in the second storage means 6d is copied to the portion of the first storage means 6c that stores the i-th parameter (step 21). Next, the pointer i is incremented (step 22), and the value of the pointer is compared with the total number of parameters N to check whether copying of all parameters is completed or not (step 23).
), returns if completed.

If not completed, repeat steps 21, 22 and 23.

In addition, in FIG. 6b, ML [il is the first storage means 6c
It represents the value of the i-th parameter stored in or the part to be stored, and the pointer i may not necessarily match the so-called memory address depending on the storage method. The same applies to M2[il.

Next, checking for undervoltage will be explained with reference to the flowchart shown in FIG. 6c. Check the undervoltage which is the parameter evacuation command signal (step 30), and if there is no undervoltage, return as is. If there is an undervoltage, the contents of the first storage means 6C are saved in the second storage means 6d (step 31), the process continues in a loop until the undervoltage is no longer present (step 32), and returns when the undervoltage is restored. Of course, when the main power of the motor control device is completely turned off, the program will stop executing after completing the loop. Note that if the parameter hold command means 6b is other than an undervoltage detection means, for example, a timer that commands a hold at fixed intervals, or a means for detecting switching between driving and stopping the motor, step 32 is performed. Loops may be unnecessary.

Next, parameter saving will be explained according to the flowchart shown in FIG. 6d. This process is exactly the same as the above-mentioned parameter registration except that the direction of copying the parameters is different. That is, step 310 is exactly the same as step 20, step 312 is exactly the same as step 22, step 313 is exactly the same as step 23, and step 31 is exactly the same as step 23.
1, unlike step 21, the contents of the first storage means 6c are copied to the second storage means 6d.

As described above, according to the second embodiment, by using the nonvolatile storage means as the second storage means 6d, the first
Compared to the embodiment, it is not necessary to readjust the parameter values every time the main power of the motor control device is turned off. Further, by providing the parameter save command means 6b, it is possible to reduce the number of write operations to non-volatile storage means, which generally has a limited number of write times and takes a long time to write compared to a normal memory.

Next, a third embodiment of the present invention will be described with reference to the drawings. FIG. 3 is a block diagram of a parameter setting device of a motor control device in a third embodiment of the present invention.

In FIG. 3, parameter adjustment means 1, parameter selection means 2, parameter selection change detection means 3, coincidence judgment means 4, coincidence storage means 5, reset detection means 6a, % parameter retention command means 6b, first storage means 6 c % The second storage means 6d and data selection means 6e have the same structure as that shown in FIG. The difference from the configuration in Figure 2 is the comparison means 6f.
The second feature is that when the contents of the first storage means 6c are copied to the second storage means 6d, the contents are first compared before copying, and only the different contents are copied.

The operation of the parameter setting device of the motor control device according to the third embodiment of the present invention constructed as described above will be explained according to the flowchart shown in FIG. In FIG. 7, parameter registration (step 2), parameter setting (step 1), step 31 and step 32
is the same as in FIG. 6. The difference from FIG. 6 is that the contents of the first storage means 6c in step 31 are
This is a procedure for evacuation, and its operation will be explained according to the flowchart in FIG. 7c. In FIG. 7c, steps 310, 311, and 312 are exactly the same as in FIG. The value of the i-th parameter stored in the storage means 6c and the second storage means 6d is compared (step 314), and if they are equal, the process of step 311 is omitted.

As described above, according to the third embodiment, the first storage means 6
By providing the means 6f for comparing the contents of the second storage means 6d and the second storage means 6d, the number of write operations to the second storage means 6d, which is a non-volatile storage means, can be further reduced compared to the second embodiment. .

Next, a fourth embodiment of the present invention will be described with reference to the drawings. FIG. 4 is a block diagram of a parameter setting device of a motor control device in a fourth embodiment of the present invention.

In FIG. 4, parameter adjustment means 1, parameter selection means 2, parameter selection change detection means 3, coincidence judgment means 4, coincidence storage means 5, reset detection means 6 a s first storage means 6 C1 second storage means 6d, The data selection means 6e has the same structure as that shown in FIG. What is different from the configuration in FIG. 2 is that the parameter retention command means 6b in FIG.
When the coincidence storage means 5 is in the matching state at the time when the parameter selection means 2 changes, the value of the parameter selected immediately before is transferred from the first storage means 6c to the second storage means. The point is that the structure is designed so that it can be evacuated to

The operation of the parameter setting device of the motor control device according to the fourth embodiment of the present invention constructed as described above will be explained according to the flowchart shown in FIG. In FIG. 8, parameter registration (step 2) is the same as in FIG. Since the undervoltage check (step 3) in Fig. 6 is avoided, the undervoltage check (step 3) in Fig. 6 is unnecessary.The procedure for parameter setting (step la) will be explained according to Fig. 8b.In Fig. 8b, the step 1
Steps 0 to 14 and steps 16 to 17 are exactly the same as the parameter setting procedure in FIG. 5b (in the first embodiment), with only the following two points different. That is, the first point is step 15 in FIG. 5b,
What is updated or read in step 18 is the parameter storage means, but in FIG. 8b, it is the first storage means (steps 15a, 18a). The second point is that when it is determined in step 11 that the parameter selection means 2 has changed, in FIG. The value of the parameter selected immediately before by the parameter selection means 2 is saved from the first storage means 6c to the second storage means 6d (step 111).
It is a point.

As described above, according to the fourth embodiment, the parameter selection changing means 3 and the coincidence storage means 5 create the timing for saving parameters from the first storage means 6c to the second storage means 6d. Therefore, the number of write operations to the second storage means 6d, which is a nonvolatile storage means, can be minimized.

Effects of the Invention As described above, the present invention provides - parameter adjustment means, parameter selection means for specifying the type of parameter, parameter storage means for storing parameter values, and values between the current value of the parameter and the parameter adjustment means. By providing a means to compare and judge and store the status, it is possible to set many motor control device parameters with a simple and inexpensive configuration, and to meet increasingly diverse and sophisticated required specifications, it is possible to achieve motor control that is more suitable for users. equipment can be provided.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a parameter setter of a motor control device according to a first embodiment of the present invention, FIG. 2 is a block diagram of a parameter setter of a motor control device according to a second embodiment of the present invention, and FIG. The figure is a block diagram of a parameter setting device of a motor control device in a third embodiment of the present invention,
The figure is a block diagram of a parameter setting device of a motor control device according to a fourth embodiment of the present invention, FIG. 5 is a flowchart showing the operation of the first embodiment, and FIG. 6 is a flowchart showing the operation of the second embodiment. Flowchart, FIG. 7 is a flowchart showing the operation of the third embodiment, FIG. 8 is a flowchart showing the operation of the fourth embodiment, and FIG. 9 is a block diagram of a parameter setting device of a conventional motor control device. . 1... Parameter adjustment means, 2... Parameter selection means, 3... Selection change detection means,
4. Old... Matching judgment means, 5... Matching storage means, 6... Parameter storage means, 6a...
- Reset detection means, 6b...Parameter retention command means, 6c...First storage means, 6d...
. . . second storage means, 6e . . . data selection means, 7 . . . interface, 8. old . . . motor control device. Name of agent Patent attorney Toshio Nakao (1 person) Figure 1 Figure 2 Figure 3 Figure 4 Figure N 5 Figure (a) (b) Figure 6 (a) (b) Figure 6 Figure 7

Claims (7)

[Claims] (1) Parameter adjustment means that determines the operation and function of the motor control device, parameter selection means that specifies a specific parameter among a plurality of parameters, and a selection change that detects a change in the designation of the parameter selection means. comparing the detection means, the parameter storage means for storing parameter values, the parameter adjustment means, and the current value of the parameter specified by the parameter selection means of the parameter storage means, and whether they match; or a match determining means for determining whether the difference is less than a predetermined value or whether the magnitude relationship has changed from the previous comparison; and a match state of the match determining means is stored, and the selection change is detected. a coincidence storage means which becomes a mismatch state when the specification by the parameter selection means is changed by the means;
A parameter setting device for a motor control device comprising: parameter storage means for storing the value of the parameter adjustment means in a location specified by the parameter selection means when the state of the coincidence storage means is a match. (2) Parameters for a motor control device according to claim 1, characterized in that the parameter storage means is constituted by non-volatile storage means that retains the memory even if the main power supply of the motor control device is cut off. Setting device. (3) The parameter storage means includes a reset detection means for detecting that the main power supply voltage of the motor control device becomes equal to or higher than a first predetermined voltage and the motor control device is reset, and a reset detection means for detecting a reset and detecting an undervoltage. Under normal conditions other than
a first storage means for storing the value of the parameter adjustment means in a location specified by the parameter selection means; a second storage means using a non-volatile storage means;
data selection means for setting the data to be stored in the storage means as the content of the second storage means and, in other cases, as the content of the parameter adjustment means; a parameter save command means for instructing a parameter save to be saved, the contents of the second storage means are copied to the first storage means at the time of reset, and the contents of the first storage means are set when there is a parameter save command. 2. The parameter setting device for a motor control device according to claim 1, wherein the parameter setting device is configured to copy the parameter to the second storage means. (4) Undervoltage detection means for detecting that the voltage of the main power supply of the motor control device has become equal to or lower than a second predetermined voltage higher than the first predetermined voltage is used as the parameter evacuation command means. A parameter setting device for a motor control device according to claim 3. (5) The parameter storage means includes a reset detection means for detecting that the voltage of the main power supply of the motor control device becomes equal to or higher than a first predetermined voltage and the motor control device is reset, and a reset detection means for detecting a reset and detecting an undervoltage. Under normal conditions other than
a first storage means for storing the value of the parameter adjustment means in a location specified by the parameter selection means; a second storage means using a non-volatile storage means;
data selection means for setting the data to be stored in the storage means as the contents of the second storage means, and in other cases as the contents of the parameter adjustment means; a parameter save command means for instructing the means to save; and contents of the first storage means;
a comparison means for comparing the contents of the second storage means with the contents of the second storage means, copies the contents of the second storage means to the first storage means at the time of reset, and copies the contents of the second storage means to the first storage means when there is a parameter save command. 2. A parameter setting device for a motor control device according to claim 1, wherein among the contents of said means, only those that are different from said second storage means are copied. (6) Undervoltage detection means for detecting that the voltage of the main power supply of the motor control device has become equal to or lower than a second predetermined voltage higher than the first predetermined voltage is used as the parameter evacuation command means. A parameter setting device for a motor control device according to claim 5. (7) The parameter storage means includes a reset detection means for detecting that the voltage of the main power supply of the motor control device becomes equal to or higher than a first predetermined voltage and the motor control device is reset, and a normal state other than when reset is detected. In this case, a first storage means stores the value of the parameter adjustment means in a location specified by the parameter selection means, a second storage means uses a non-volatile storage means, and at the time of reset, the value is stored in the first storage means. a data selection means for setting the data to be the content of the second storage means, and in other cases, the data selection means for setting the data to be the content of the parameter adjustment means; When the parameter selection change detecting means detects a change in parameter selection, if the matching storage means is in a matching state, the first storage means corresponds to the parameter that was specified by the parameter selection means immediately before. 2. The parameter setting device for a motor control device according to claim 1, wherein the parameter setting device is configured to copy the contents of the parameter setting device to the second storage means.