CN217787656U - Direct current speed adjusting device control system that network fault does not stop - Google Patents

Abstract

The utility model discloses a direct current speed adjusting device control system that network fault did not stop, include: the system comprises a direct current motor, a direct current speed regulating device equipped with the direct current motor, a PLC (programmable logic controller) equipped with the direct current motor, a general PLC and a PROFIBUS DP communication network; a DC24V public end of the direct current speed regulating device is respectively connected with a closing signal command end and a device operation enable signal command end; an emergency stop button is connected in series between the running short-circuit points of the direct current speed regulating device; and a PROFIBUS DP communication network is used for respectively connecting each direct current speed regulating device, the PLC controller equipped for the direct current motor and the general PLC controller. This system is through the mode of connection that changes the PLC controller that DC speed adjusting device and direct current motor correspond in the workshop, when solving the network fault and falling the station, prevents that equipment in the normal production from stopping immediately and causing the production scheduling problem when mistaking, has reduced the network fault and has fallen the station and lead to the material mistaking when mistaking, and then has improved production efficiency.

Description

Direct current speed adjusting device control system that network fault does not stop

Technical Field

The utility model belongs to the technical field of the direct current speed adjusting device, especially, direct current speed adjusting device control system that network fault did not stop.

Background

The automatic production is production by an automatic technology and can be divided into semi-automatic production and full-automatic production according to the degree of automation. The former adopts an automatic technology in part and manual operation in part in the production process; the latter is the whole process of the whole production process, including feeding, blanking, packaging, transportation and the like, does not need people to directly participate in the operation, and only indirectly supervises the work of the machine. Whether the semi-automatic production or the full-automatic production brings very profound influence to the human society, wherein the most important is to greatly improve the social labor productivity and enhance the capability of human beings for improving nature.

At present, automatic production is realized by controlling a production rolling mill in a steel rolling workshop. However, the current control of the production rolling mill in the steel rolling workshop is in a mode as shown in fig. 2, each direct current motor is provided with a direct current speed regulating device and a PLC controller, and all the direct current speed regulating devices and the PLC controllers corresponding to the direct current motors in the whole production workshop are also connected with a total PLC controller.

However, when a network fault of a direct current motor control system in a steel rolling workshop is out of service (service interruption caused by power failure), a large potential safety hazard exists when a production rolling mill is immediately stopped and material is overflowed, and the high-efficiency production is also seriously influenced. With the acceleration of lean production process, the high efficiency and zero time of production become the final indexes pursued by the performance of production equipment, so the fault time of the production equipment becomes the attitude of zero tolerance. How to solve the technical problems is a problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

In order to solve exist not enough among the prior art, this application has provided a direct current speed adjusting device control system that network fault does not stop, through the mode of connection that changes the PLC controller that direct current speed adjusting device and direct current motor correspond in the workshop, when solving network fault and falling the station, prevent equipment in the normal production from stopping immediately and cause the production scheduling problem of mistaking time, reduced network fault and fallen the station and the material mistake that leads to is mistimed, and then improved production efficiency.

The utility model discloses the technical scheme who adopts as follows:

a control system of a direct current speed regulation device without network fault shutdown comprises:

a direct-current motor is arranged at the lower part of the motor,

the direct current speed regulating device is equipped with the direct current motor; the DC24V public end of the direct current speed regulating device is respectively connected with a closing signal instruction end and a device operation enable signal instruction end; an emergency stop button is connected in series between the running short-circuit points of the direct current speed regulating device;

a PLC controller equipped with the DC motor;

a general PLC controller;

PROFIBUS DP communications network; and the PROFIBUS DP communication network is respectively connected with each direct current speed regulating device, a PLC controller and a general PLC controller which are equipped with the direct current motor.

Furthermore, the direct current motors are multiple, and each direct current motor is provided with a direct current speed regulating device.

Furthermore, the direct current speed regulating device is Siemens 6RA7085-6DV62-0 or 6RA8013-6DV62-0AA0.

Further, a PLC controller equipped for the direct current motor selects a Siemens CPU224 module or a CPU226 module.

Further, the general PLC controller adopts a Siemens CPU416 module.

The utility model has the advantages that:

1. according to the control system of the direct current speed regulating device, a PLC (programmable logic controller) which is not provided with a direct current motor is cancelled to send a switching value signal to the direct current speed regulating device, so that a DC24V public end (34 # terminal), a closing signal command end (37 # terminal) and a device operation enabling signal command end (38 # terminal) of the direct current speed regulating device are in short circuit; when the network is in abnormal fault and is out of station, the direct current speed regulating device is not influenced to operate normally all the time, and the system cannot stop immediately.

2. The application also removes the short-circuit wires of the original operation signal short-circuit points (109 #, 110# terminals) of the direct current speed regulating device, improves and optimizes the signal series connection of the emergency stop closing points on the use site, and can carry out emergency stop for use under the condition that the 'network abnormal fault' always occurs and the reset can not be immediately eliminated temporarily.

Drawings

FIG. 1 is a schematic diagram illustrating a connection relationship of a control system of a non-stop DC speed regulation device in case of network failure according to the present application;

FIG. 2 is a schematic diagram of a network fault signal output of a control system of a DC speed regulating device without stopping in case of network fault according to the present application;

FIG. 3 is a schematic diagram of the connection relationship of a control system of a conventional DC speed-regulating device;

fig. 4 is a schematic diagram of network fault signal output of a control system of a conventional direct current speed regulating device.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The utility model provides a direct current speed adjusting device control system that network fault does not stop as shown in figure 1 includes: the system comprises a plurality of direct current motors arranged in a production workshop, a direct current speed regulating device equipped for each direct current motor, a PLC controller equipped for each direct current motor, a total PLC controller of the production workshop and a PROFIBUS DP communication network.

In the present embodiment, a steel rolling plant is taken as an example for explanation.

In this embodiment, a plurality of dc motors are provided in the steel rolling workshop, and each dc motor is provided with a dc speed adjusting device.

In this embodiment, each dc speed adjusting device and the PLC controller of the dc motor are connected to the master PLC controller through a PROFIBUS DP communication network.

The specific connection relationship with the attached figure 1 is as follows:

a DC24V common end (34 # terminal) of the direct current speed regulating device is respectively connected with a closing signal command end (37 # terminal) and a device operation enable signal command end (38 # terminal); an emergency stop button is connected in series between the operation short-circuit points (109 # terminal and 110# terminal) of the direct current speed regulating device.

In the working engineering, when the conditions such as the station drop due to network faults occur, the direct current speed regulating device in operation is not influenced by the abnormal conditions of the system any more, the continuous production of the production field equipment is ensured without stopping, and network fault information (reminding personnel to remove the faults in time) is sent out at the same time.

In the prior art, a DC24V common end (34 # terminal), a closing signal command end (37 # terminal) and a device operation enable signal command end (38 # terminal) of a direct current speed regulating device are connected with a PLC (programmable logic controller) equipped with a direct current motor, and a 109# terminal and a 110# terminal are short-circuited; if the short circuit signal between the 109# terminal and the 110# terminal is disconnected, the system stops immediately. Each direct current speed adjusting device and the PLC controller equipped with the direct current motor are connected with a general PLC controller (400 PLC in the figure) through a PROFIBUS DP communication network.

The control signal sent by the PLC controller (200 PLC in the figure) equipped with the dc motor is:

(1) Dc speed control device 37# terminal: when the signal is lost, the direct current motor is stopped under the control of the direct current speed regulating device (the reverse group is stopped under the control of the reverse group thyristor);

(2) Dc speed control device 38# terminal: when the signal is lost, the motor can be freely stopped, and the direct-current speed regulating device does not participate in the motor stop control.

The PROFIBUS DP network sends out control signals:

(1) Switching value signal, running signal:

the main PLC controller sends the switching value signal to a PLC controller equipped for the direct current motor, and then the PLC controller equipped for the direct current motor sends a signal to a No. 37 control terminal of the device;

and the general PLC sends an operation signal to the direct current speed regulating device.

(2) Analog quantity signal, speed signal:

the speed signal is sent to the DC speed regulating device by the general PLC controller.

As shown in fig. 4, when a fault such as abnormal station drop occurs in the PROFIBUS DP network, the network state signal point may be instantaneously closed, which causes the system to output a comprehensive fault signal and alarm, thereby affecting the normal operation of the system. (when the network is normal, the 'network abnormal fault' signal point is powered on and disconnected, and the 'system comprehensive fault' signal has no output; when the network is in fault, the 'network abnormal fault' signal point is powered off and closed, and the 'system comprehensive fault' signal has output).

With reference to fig. 1 to 4, it can be seen through comparison that the dc speed adjusting device control system designed in the present application cancels the PLC controller signaling control mode provided for the dc motor, cancels the control mode in which the PLC controller provided for the dc motor sends the switching value signal to the terminals 37# and 38# of the dc speed adjusting device, and short-circuits the terminals 34# and 37# and 38# of the dc speed adjusting device, that is, the signal is always sent to the terminals 37# and 38#, and the master PLC controller controls the dc speed adjusting device to start and stop (as shown in fig. 1). Therefore, when the station is lost due to the abnormal network fault, the direct current speed regulating device can not be influenced and can always normally operate (before the signal loss of any terminal of the 37# terminal or the 38# terminal is changed, the vehicle can be stopped).

In this embodiment, the DC speed regulator is selected from Siemens 6RA7085-6DV62-0 or 6RA8013-6DV62-0AA0.

Specifically, a PLC controller equipped for the direct current motor selects a Siemens CPU224 module (6 ES7-214-1 BD23-0XB 8) or a CPU226 module (6 ES7-2 BD23-0XB 8).

Specifically, the total PLC controller selects a Siemens CPU416 module (6ES7-2 XP07-0AB 0).

In addition, the PLC controller only outputs control instructions and can be programmed according to the prior art and actual production arrangement.

The above embodiments are only used to illustrate the design idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and to implement the present invention, and the protection scope of the present invention is not limited to the above embodiments. Therefore, all the equivalent changes or modifications made according to the principles and design ideas disclosed by the present invention are within the protection scope of the present invention.

Claims (5)

1. The utility model provides a direct current speed adjusting device control system that network fault does not stop which characterized in that includes:

a direct-current motor is arranged on the base,

the direct current speed regulating device is equipped with the direct current motor; a DC24V public end of the direct current speed regulating device is respectively connected with a closing signal instruction end and a device operation enable signal instruction end; an emergency stop button is connected in series between the running short-circuit points of the direct current speed regulating device;

a PLC controller equipped with the DC motor;

a general PLC controller;

profibus dp communications network; and the PROFIBUS DP communication network is respectively connected with each direct current speed regulating device, the PLC controller equipped for the direct current motor and the total PLC controller.

2. The system as claimed in claim 1, wherein the dc motors are provided in plurality, and each dc motor is provided with a dc speed adjusting device.

3. The system for controlling the direct current speed regulation device without stopping the network fault according to claim 1 or 2, wherein the direct current speed regulation device is Siemens 6RA7085-6DV62-0 or 6RA8013-6DV62-0AA0.

4. The system as claimed in claim 1, wherein the dc speed regulator is configured with a PLC controller selected from a siemens CPU224 module and a siemens CPU226 module.

5. The system as claimed in claim 1, wherein the general PLC controller is Siemens CPU416 module.

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