KR19980052678A - Inverter with remote fault notification - Google Patents

Abstract

It is an object of the present invention to provide an improved inverter with the addition of a function that can minimize the time and economic costs associated with the inspection and troubleshooting of the conventional inverter 9.

Inverter 9 having a remote fault notification function according to the present invention includes a main memory 2 for storing a program and storing data, and reading necessary software from the main memory 2 described above in order of modem control program 8. The CPU 1 controlling the modem unit 7, the I / O unit 4 connected to the CPU 1 to perform data input / output, etc., and the PWM necessary to drive the motor 11. PWM generating section 3 for generating a waveform, a power module section 5 for converting the PWM waveform into a PWM wave of actual voltage, and a loader section connected to the CPU 1 to display an operation state and the like ( 6) and a modem unit 7 connected to the CPU 1 and transmitting information to the central control station 12.

Description

Inverter with remote fault notification

The present invention relates to an inverter, and more particularly, to an inverter having a function of automatically notifying a remote control center of its own operation state and cause of failure.

The present invention is to notify the central control station located at a distance from the current operation information, i.e., operation speed, output current, input terminal state, output terminal state, etc. according to a predetermined schedule during operation, or when a failure state or failure is predicted. It is related to the inverter having the function to inform the central control station of the relevant information in the state, and it is provided with the communication port to connect the internal or external modem in hardware to the existing inverter, to control the modem and to predict and recognize the failure. Software-configurable algorithms are possible.

1 is a block diagram showing the prior art, the configuration and operation of the prior art are as follows.

A main memory 2 for storing a program and storing data, a CPU 1 for reading a necessary program from the main memory 2 described above, and a CPU 1 for inputting / outputting data and the like. The I / O unit 4 for performing the operation, the host controller 10 for controlling the inverter 9 through the I / O unit 4, and the inverter according to the control command from the host controller 10 described above. A motor 11 driven by (9), a PWM generator 3 for generating pulse width modulated waves required to drive the motor 11, and the pulse width modulated waves as described above. And a loader module 6 connected to the CPU 1 to display an operation state and the like.

The conventional inverter 9 merely shows the operating state or the fault state through the loader unit 6, so that if the inverter 9 always resides on the site where the inverter 9 is installed and does not check the operating state, the fault may be predicted in advance. There is a limit to prevent the failure in advance, and in order to obtain information even when a failure occurs, it is necessary to go to the installation site of the inverter 9 and grasp the details of the failure through the loader section 6. The time and economic cost of doing so will be small.

It is an object of the present invention to provide an improved inverter that adds a function capable of minimizing the time and economic costs associated with the inspection and troubleshooting of conventional inverters.

According to the present invention, as the inverter 9 automatically notifies the driving information periodically through the telephone line according to a schedule determined by the central control center 12 at a remote location, the central control station 12 has an inverter 9. By continuously analyzing the operation status of the system according to the schedule to prevent the failure in advance, improve the efficiency of the system using the inverter 9, and even in the event of a failure, the central control center (12) ), The cause of failure can be analyzed quickly and the loss caused by the fault can be minimized.

1 is a block diagram showing a prior art.

2 is a block diagram showing the present invention.

3 is a flowchart of a modem control program showing the modem control program of FIG.

Explanation of symbols on the main parts of the drawing

(1) ----------------------------- CPU (Central Processing Unit),

(2) -------------------------------------- Main memory,

(3) ------------------------- PWM (Pulse Width Modulation) Generator,

(4) ------------------------------ I / O (Input / Output) section,

(5) ----------------------- Power Module Unit,

(6) ------------------------------------------ Loader,

(7) ---------------------------------------- modem section,

(8) ----------------------------- modem control program,

(9) ---------------------------------------- inverter,

(10) ---------------------------------- Host controller,

(11) ----------------------------------------- motor,

(12) ----------------------------------- Central Control Center.

2 is a block diagram showing the present invention.

The present invention relates to a main memory (2) for storing a program and storing data, a CPU (1) for reading a necessary program from the main memory (2), and controlling each part of the inverter (9). An I / O unit 4 connected to the CPU 1 to perform data input / output, etc., a PWM generation unit 3 for generating PWM waveforms required to drive the motor 11, and the PWM waveforms described above. A modem unit 7 is additionally configured in an inverter composed of a power module unit 5 for converting a PWM wave of an actual voltage and a loader unit 6 connected to the CPU 1 to display an operation state and the like. The modem control program 8 is added to the existing inverter drive program stored in the main memory 2.

The present invention has the following configurations and functions.

A main memory (2) for storing a program and storing data, a CPU (1) for reading the necessary software from the main memory (2) and controlling the modem (7) in the order of the modem control program (8); And an I / O unit 4 connected to the CPU 1 to perform data input / output and the like, and a motor driven by the inverter 9 by receiving a control flow command from the upper controller 10. 11), a PWM generation unit 3 for generating PWM waveforms required to drive the motor 11, a power module unit 5 for converting the PWM waveforms into PWM waves of actual voltage, and the CPU It is composed of a loader unit 6 connected to (1) to display an operation state and the like, and a modem unit 7 connected to the CPU 1 to transmit information to the central control station 12.

The CPU 1 controls the modem unit 7 in accordance with the sequence of the modem control program 8 of FIG. 3. The CPU 1 drives the modem unit 7 and makes a call according to a predetermined schedule. After the telephone connection is made, the central control station 12 is notified of the operating frequency, the output current, the input terminal state, the output terminal state, the fault information, the internal data at the time of failure, and the likelihood of a fault. In addition, when a failure is foreseen, the central control center 12 is notified of information requesting correction or correction thereof from time to time. In addition, even when a failure occurs, the central control center 12 is notified of the failure state and the operation state at the time of failure.

According to the present invention, the inverter 9 automatically notifies periodically of its own driving information through a telephone line according to a schedule determined by the central control center 12 at a remote location. By analyzing the condition continuously according to the schedule, the failure is prevented in advance to improve the efficiency of the system using the inverter 9, and even when a failure occurs, the central control center 12 is immediately and accurately informed of the operation status in case of failure. As a result, failure analysis can be performed quickly, thereby minimizing the loss that can be caused by failure.

Claims (1)

A main memory 2 for storing programs and data; A CPU 1 which reads out necessary programs from the main memory 2 and controls the modem unit 7 and each component unit by a program; An I / O unit 4 connected to the CPU 1 for inputting / outputting data and the like; A PWM generator (3) for generating pulse width modulation waves necessary for driving the motor (11); A power module unit 5 for converting the PWM waveform into a PWM wave of an actual voltage; A loader unit 6 connected to the CPU 1 to display an operation state and the like; Inverter having a remote failure notification function consisting of a modem unit (7) connected to the CPU (1) and transmitting information to the central control station (12).