JP5208377B2 - Electric motor driving apparatus and electric motor driving method - Google Patents

Description

  The present invention relates to an electric motor drive device and an electric motor drive method, and more particularly to an internal data tracing technique of a drive device that drives an electric motor.

  In recent years, motor starters such as servo amplifiers that drive motors have been widely used, and they are used in a wide range of applications, including semiconductor and liquid crystal manufacturing equipment, robots, assembly machines, and press machines. Yes. In the industrial machines as described above, there is a demand for manufacturing a product with a high tact time. For this reason, a servo amplifier or the like that is the core of the manufacturing apparatus has been required to have high performance and high function. The demand for servo amplifiers in the above industrial equipment requires high performance, high functionality, easy initial adjustment, quick response to failures and other troubles, and as few production halts as possible. ing.

Conventionally, when making adjustments to fully exploit the performance of the above industrial machines, or when investigating any troubles that occur, prepare a personal computer, etc. for the servo amplifier, and connect the servo amplifier to the personal computer. However, while actually moving the machine, the data inside the servo amplifier was monitored and analyzed in real time. Regarding techniques for managing an electric motor drive device, there are those disclosed in Patent Documents 1 to 3.
JP 2002-272139 A Japanese Patent Laid-Open No. 1-264586 JP 2002-223586 A

  As a problem of the above-mentioned prior art, it is necessary to bring a personal computer etc. to the site where the manufacturing machine is installed, and to make adjustments and trouble investigations by people. In this case, there is a high possibility that simple faults can be quickly dealt with, but troubles with low reproducibility, in particular, the machine is operating normally. For example, once every few days, the machine issues a warning and stops for some reason. However, if the production is continued without knowing the cause, or if there is no particular warning, but there are rarely mixed defects in the production product, but the cause cannot be grasped, it is very difficult to investigate the cause. Time may be spent. In addition, these operations are mostly performed by support personnel from manufacturers who are familiar with servo amplifiers and the like, and there are cases where sufficient support cannot be achieved due to lack of personnel.

  In addition, there is no failure in the servo amplifier alone, but examples of troubles with low reproducibility are as follows: (1) In rare cases, an instantaneous power failure occurs, resulting in a reduction in product quality. (2) The machine stops temporarily due to the generation of electrical noise. (3) An unexpected work product flows from the upstream process, and the servo amplifier outputs excessive torque in the machine.

  Conventionally, in the case of troubles as described above, there is a function to detect an abnormality with a servo amplifier alone and generate a warning, but these are cases of excessive abnormality over a certain level, and it is only a machine or servo amplifier alone The purpose is to protect the environment.

  Moreover, although the said patent document 1 has demonstrated the inverter system, the technique which can be applied to general motor drive devices, such as a servo amplifier, is proposed. In Patent Document 1, it is intended to analyze various data at the moment when a warning occurs, and a cellular phone is assumed as the data transfer method. However, when a warning occurs, it may be possible to analyze the cause of failure more accurately if the output data and the input / output contact state for several seconds before and after the warning can be traced together with the instantaneous data. In addition, mobile phones may be out of service area, such as in factories where production facilities are installed. Patent Document 2 discloses that data is accumulated to diagnose a failure or the like, and Patent Document 3 discloses that a computer is used to analyze the operating state of the motor drive device. However, cooperation with a removable external storage device is not considered.

  In the present invention, for troubles with low reproducibility as described above, it is necessary to keep a person monitoring the machine as much as possible without taking a measuring device such as a personal computer to the site where the production machine is installed. It is another object of the present invention to provide an electric motor driving apparatus and an electric motor driving method capable of cooperating with a removable external storage device and coping with and solving the cause early.

  In order to solve these problems and the problems to be solved by the present invention, the electric motor drive device of the present invention has the following configuration. The above problem is that an external memory interface and a trace setting file set in advance in the external memory are automatically read into the internal memory, and arbitrary data of the motor drive device (for example, output current value and motor Sampling trace of drive voltage, etc. and storing it in the internal memory, and troubles that occur at any timing (for example, turning on the power or exceeding the specified output torque) are detected in very rare cases. In such a case, the trigger may be input to the motor drive device as an external input), and has a function of outputting several seconds before and after the occurrence of the trigger as trace data to an external memory, This is achieved by separately analyzing the trace data with a personal computer or the like.

That is, the present invention provides, as internal data, an electric motor drive processing unit that controls driving of an electric motor, an electric motor state grasping unit that grasps the state of the electric motor, drive data of the electric motor, and state data grasped by the electric motor state grasping unit. An external storage device that detachably attaches an external storage device, detects an attachment / detachment state of the external storage device, and notifies the motor state grasping unit of the attachment / detachment state; internal when the connection of the external storage device is detected by the interface, from the external storage device, it searches the pre-specified multiple data files, read the discovery data file, the data file loaded, to obtain Determine whether a trace setting file that describes the type of data and the conditions for starting acquisition is included The trace setting file is expanded in the internal storage unit, the motor state grasping unit is operated according to the contents of the trace setting file, and the generated state data is stored as internal data in the internal storage unit, and the internal storage unit stores The internal data to be transferred is transferred to the external storage device, and a parameter file in which various setting items for operating the motor drive device are read from the external storage device and set, and the traces having different contents When there are n setting files and parameter files with different contents, internal data is acquired based on the settings of the first trace setting file and the first parameter file, and the acquired internal data is transferred to the external storage device Then, the trace setting file after the second and the parameter file after the second Based on a motor drive device for transfer to retrieve the external storage device in the data.

The present invention is an electric motor driving device configured to notify a warning when a pre-designated data file does not exist as a result of the search or when the detected data file has a data structure different from the pre-designated content. is there.

Furthermore, the present invention controls the drive of the motor by the motor drive processing unit , grasps the state of the motor by the motor state grasping unit, and stores the drive data of the motor and the state data grasped by the motor state grasping unit as internal data. The external storage device is detachably attached by an external storage device interface that detects the attachment / detachment state of the external storage device and notifies the motor state grasping portion of the attachment / detachment state. wherein when the connection of the external storage device is detected, from said external storage device, searches the pre-specified multiple data files, read the discovery data file,
It is determined whether or not the read data file includes a trace setting file that describes the type of internal data to be acquired and the conditions for starting acquisition,
The trace setting file is expanded in the internal storage unit, the motor state grasping unit is operated according to the contents of the trace setting file, and the generated state data is stored as internal data in the internal storage unit, and the internal storage unit stores To transfer the internal data to the external storage device ,
From the external storage device, read and set a parameter file describing various setting items for operating the motor drive device,
When there are n trace setting files with different contents and n parameter files with different contents, internal data is acquired based on the settings of the first trace setting file and the first parameter file, and the acquired internal data is This is an electric motor driving method for acquiring internal data and transferring the data to an external storage device based on the second and subsequent trace setting files and the second and subsequent parameter files after transferring to the storage device .

  The present invention is an electric motor driving method for notifying a warning when a data file designated in advance does not exist as a result of the search or when the detected data file has a data structure different from the content designated in advance.

  According to the present invention, it is possible to provide an electric motor drive device and an electric motor drive method that have higher functionality than conventional ones.

The best mode for carrying out the present invention will be described.
Hereinafter, the Example of the electric motor drive device of this invention is described in detail using FIGS. In each figure, the common code | symbol shows the same thing. FIG. 1 shows a system block diagram of a servo amplifier as this embodiment. The servo amplifier 1 in FIG. 1 includes an electric motor drive processing unit 11 for driving the electric motor 2, a trace processing unit 12 that traces arbitrary data of the electric motor drive processing unit 11, data and conditions that the trace processing unit 12 traces, etc. When the trace setting memory 13 for saving the data, the trace data saving memory 15 for saving the traced data, and the external memory 3 are attached, an external memory attaching signal is generated and an external memo for inputting / outputting data to / from the external memory 3 is provided. and Rii interface 14, a signal LED16 notifying normal or abnormal determination and trace end trace configuration file 41, in constructed.

  FIG. 2 shows a flowchart from when the external memory 3 is attached to the servo amplifier until the trace data is output to the external memory. As the external memory 3, for example, a USB memory chip or an SD memory card is assumed. In recent years, these external memories are commercially available and can be obtained at low cost. By attaching the external memory 3 to the external memory interface 14, the external memory interface 14 outputs an external memory attachment signal to the trace processing unit 12.

The trace processing unit 12 that has detected the external memory attachment signal determines whether or not the external memory 3 is connected (S101). When the external memory 3 is connected, the trace processing unit 12 searches for the trace setting file (S111) and whether the trace setting file 41 exists. Is determined (S112). If the trace setting file 41 exists, the contents are read out to the trace setting memory 13 (S121). Next, it is confirmed whether or not the trace setting file 41 has the specified correct format (S122). If the format is incorrect, a warning signal is output to the signal LED 16 (S131). When there is a correct file, it is determined whether there is a “parameter setting” command (S141). If there is no command, trace processing is started (S152). If there is, a parameter is set (S151) and then trace processing is started (S152). The data specified in the trace setting file 41 is written into the trace data storage memory 15 at a predetermined sampling time interval. When data is written to the end of the trace data storage memory 15, it is overwritten from the top of the memory and the operation is repeated. When the trigger condition in the trace setting memory 13 is satisfied (S153), the trace processing unit 12 performs sampling for a predetermined time after the trigger condition specified in the trace setting memory, and then in the trace data storage memory 15 The contents are saved in the external memory 3 (S161), and the servo amplifier setting parameter list is also saved in the external memory 3 (S162). Next, an end signal is output to the signal LED 16 (S163).

  Also, when the trace processing unit 12 automatically searches and reads the trace setting file and the “parameter setting” command is described in the trace setting file 41, the trace processing unit 12 reads the parameter file from the external memory 3 and It also provides a function to reset various parameters.

  Next, a configuration example of the contents of the trace setting file 41 will be described with reference to FIG. The trace setting file 41 is composed of a data group related to a file identifier / trace at a minimum. The file identifier is used by the trace processing unit 12 to determine whether this file is a trace setting file. If a file abnormality is detected in this determination, a warning signal is output to the signal LED 16. The data group related to the trace includes a sampling interval, the number of times of sampling after triggering, a trigger condition, the number of acquired data, a specific acquired data name, and the like.

  Further, the trace setting file 41 has “trace command”, “setting parameter file name”, and “trace setting file to be read next” as options. If you can enable or disable "Trace execution" and enable or disable "Parameter setting" in the trace command, (1) Only execute trace (2) Only execute parameter setting (3) After setting parameters Trace execution can be set. If you set a trace setting file with a different parameter name and a "parameter setting" command to the "trace setting file to be read next", after reading the first trace setting file and executing the trace, After reading the next trace setting file and setting the parameters again, a sequence of starting trace again can be realized.

  Next, a procedure from when a warning is detected at the user machine until it is resolved will be described with reference to FIG. If a trouble occurs in the user machine (S201), the user notifies the manufacturer support of the trouble content (S202). The manufacturer support who has received the notification confirms the rough warning contents (S301), creates the trace setting file 41 for tracing the servo amplifier data (S302), and sends it to the user by e-mail or the like (S303). ). The user copies the trace setting file 41 attached to the received e-mail to a USB memory chip or the like (S203), attaches it to the servo amplifier (S204), and operates the machine again. The servo amplifier automatically reads the trace setting file from the external memory (S401), and after the trigger condition is satisfied, writes the trace data to the external memory (S402) and outputs an end signal to the LED. After confirming the end signal, the user removes the external memory, and then sends the trace data output to the external memory to the manufacturer support by e-mail using a personal computer or the like (S205). Upon receiving the trace data, the manufacturer support analyzes the trace data (S304), estimates the cause of the warning, and informs the user of the coping method (S305). If you need to reset parameters or trace again, send the trace setting file to the user again and repeat the above steps until the trouble is resolved. The user side performs troubleshooting by a coping method (S206).

  As described above, according to the present embodiment, in the case where trouble is difficult to reproduce in the motor drive device, in the case where the cause is found by tracing arbitrary data of the motor drive device, the trace setting and the trace are performed. By automatically performing the result via the external memory, various settings that are troublesome for the user can be omitted. This also has an effect of preventing secondary troubles when a part of the trouble solving process is left to a user who is not familiar with the motor drive device, such as when the setting of the motor drive device is changed by telephone contact.

  In addition, by making these settings on the manufacturer support side, it is possible to speed up the resolution of troubles by reducing the mistakes of settings and narrowing down the cause, and for the user, shortening the machine stop time. For the manufacturer support, there is an advantage such as support to other users without being restricted by one trouble for a long time.

  And, for troubles with low reproducibility, discover the cause early without having to take a measuring device such as a personal computer to the site where the production machine is installed and without monitoring the machine as much as possible. An electric motor drive device and an electric motor drive method that can be dealt with and solved can be provided.

The internal block diagram of the electric motor drive device of an Example. The flowchart figure of the trace execution procedure in an Example. The internal structural example figure of the trace setting file in an Example. The workflow figure at the time of the trouble countermeasure in an Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Electric motor drive device, 2 ... Electric motor, 3 ... External memory, 11 ... Electric motor drive processing part, 12 ... Trace processing part, 13 ... Trace setting memory, 14 ... External memory interface, 15 ... Trace data storage memory, 16 ... Signal LED, 41 ... Trace setting file

Claims (4)

An electric motor drive processing unit for controlling the electric motor;
An electric motor state grasping unit for grasping the state of the electric motor;
A trace processing unit for tracing arbitrary data of the electric motor drive processing unit;
A trace setting memory for storing data and conditions to be traced by the trace processing unit;
A trace data storage memory for storing data traced by the trace processing unit;
Removably attached external memory, if the external memory is attached, and generating an external memory attached signal, and an external memory interface for input and output of the external memory and data,
The trace processing unit
Wherein when the connection of the external memory by the receipt of the external memory mounting signal from the external memory interface is detected, the searching from external memory pre Me specified trace configuration file, the type of trace data acquisition and start acquisition It is determined whether or not a trace setting file that describes the conditions to be included is included, and when the trace setting file is included , the trace setting file is read,
When there is a parameter setting command in the read trace setting file, the parameter file is read from the external memory , and various setting items for operating the motor driving device are set in the motor driving device based on the read parameter file. ,
The trace setting file is expanded in the trace setting memory, the trace processing unit is operated in accordance with the contents of the trace setting file, the generated trace data is stored in the trace data storage memory, and the trace data storage memory stores The trace data to be transferred to the external memory,
If the trace setting different contents file and contents different parameters file there are n respectively, based on the first trace configuration files and setting of the first parameter file acquiring trace data, wherein the acquired trace data after transferring to the external memory, subsequently, the characterized in that based on the second and subsequent trace configuration file and the second and subsequent parameter file, respectively configured to perform the transfer of the acquisition of the trace data to the external memory To drive the motor. In the electric motor drive device according to claim 1,
If the trace setting file and parameter file specified in advance do not exist as a result of the search, or if the detected trace setting file and parameter file have a data structure different from the specified content, a warning is configured. An electric motor drive device. While controlling the drive of the motor by the motor drive processing unit,
By grasping the state of the motor by the motor state grasping unit,
Trace arbitrary data of the motor drive processing unit by the trace processing unit,
The trace setting memory stores data and conditions to be traced by the trace processing unit,
The trace data storage memory stores the data traced by the trace processing unit ,
When an external memory is mounted, and generates an external memory attached signal, mounted removably said external memory by an external memory interface for input and output of the external memory and data,
By the trace processing unit,
Wherein when the connection of the external memory by the receipt of the external memory mounting signal from the external memory interface is detected, from said external memory, retrieves the pre-specified trace configuration file starts acquiring the type of trace data acquisition It is determined whether or not a trace setting file that describes conditions is included, and if a trace setting file is included , the trace setting file is read,
When there is a parameter setting command in the read trace setting file, the parameter file is read from the external memory, and various setting items for operating the motor driving device are set in the motor driving device based on the read parameter file. ,
Expand the trace configuration file to the trace setting memory, said actuates the trace processing unit according to the content of the trace configuration file, stores the trace data generated before Symbol trace data storage memory,
Trace data which the trace data storage memory is stored, is transferred to the external memory,
If different parameters file trace configuration file and contents having different contents there are n respectively, based on the first trace configuration files and setting of the first parameter file acquiring trace data, the acquired trace data wherein after transferring to the external memory, followed, on the basis of the second and subsequent trace configuration file and the second and subsequent parameter file, respectively the motor and performing the transfer and acquisition of trace data to the external memory drive Method. In the electric motor drive method according to claim 3,
As a result of the search, if the previously specified trace setting file and parameter file do not exist, or if the detected trace setting file and parameter file have a data structure different from the previously specified content, a warning is notified. Driving method.

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