CN111880469A - Network relay control device - Google Patents

Network relay control device Download PDF

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Publication number
CN111880469A
CN111880469A CN202010856837.1A CN202010856837A CN111880469A CN 111880469 A CN111880469 A CN 111880469A CN 202010856837 A CN202010856837 A CN 202010856837A CN 111880469 A CN111880469 A CN 111880469A
Authority
CN
China
Prior art keywords
network relay
network
newly
plc
contactor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010856837.1A
Other languages
Chinese (zh)
Inventor
刘怡思
史磊
侯汉祥
张锐
杨彦冬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianjin Runhe Green Energy Technology Co ltd
Original Assignee
Tianjin Runhe Green Energy Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tianjin Runhe Green Energy Technology Co ltd filed Critical Tianjin Runhe Green Energy Technology Co ltd
Priority to CN202010856837.1A priority Critical patent/CN111880469A/en
Publication of CN111880469A publication Critical patent/CN111880469A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/008—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/22—Modifications for ensuring a predetermined initial state when the supply voltage has been applied
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K2017/515—Mechanical switches; Electronic switches controlling mechanical switches, e.g. relais

Abstract

The invention provides a network relay control device, comprising: the system comprises a network relay, a surge protector and a PLC (programmable logic controller), wherein the network relay is arranged on one side of the surge protector, the PLC is connected with a power supply end of the network relay, the surge protector is connected with the network relay, and the surge protector is connected with a reset wire from an engine room; the PLC controller is further connected with the background server through a network cable; the network relay is used for receiving a fan motor starting signal, a newly-added forward contactor, a newly-added reverse contactor, a direct-current power supply and a safety device; the output end of the network relay plays a role of switching; the background server sends an action command to the PLC through the optical fiber network to drive the network relay so as to control the action of the fan motor.

Description

Network relay control device
Technical Field
The invention relates to the technical field of industrial control, in particular to a network relay control device.
Background
When an existing fan runs in an emergency, sudden stop reset may be needed. However, the existing hard-processing emergency stop reset easily causes damage to the fan, and the service life of the fan is shortened.
Disclosure of Invention
The object of the present invention is to solve at least one of the technical drawbacks mentioned.
Therefore, the invention aims to provide a network relay control device.
In order to achieve the above object, an embodiment of the present invention provides a network relay control apparatus including: the system comprises a network relay, a surge protector and a PLC (programmable logic controller), wherein the network relay is installed on one side of the surge protector, the PLC is connected with a power supply end of the network relay, the surge protector is connected with the network relay, and the surge protector is further connected with a reset wire from a cabin; the PLC controller is further connected with a background server through a network cable;
the network relay is used for receiving a fan motor starting signal, a newly-added forward contactor, a newly-added reverse contactor, a direct-current power supply and a safety device, wherein the input end of the newly-added forward contactor is connected with the first output end of the network relay, the input end of the newly-added reverse contactor is connected with the second output end of the network relay, and the input end of the network relay is connected with the fan motor starting signal; the output end of the network relay plays a role of switching;
the background server sends an action command to the PLC through an optical fiber network, the PLC drives the network relay, and the network relay controls the action of the fan motor so as to realize remote operation and remote monitoring.
Furthermore, a normally closed contact is connected in series between the first output end of the network relay and the newly-added forward contactor, and is clamped on the newly-added reverse contactor, a normally closed contact is connected in series between the second output end of the network relay and the newly-added reverse contactor, and is clamped on the newly-added forward contactor.
Furthermore, a normally closed contact is connected in series between the first output end of the network relay and the newly-added forward contactor, and is clamped on the newly-added reverse contactor, a normally closed contact is connected in series between the second output end of the network relay and the newly-added reverse contactor, and is clamped on the newly-added forward contactor.
Further, the present invention also includes: and one end of the fuse is connected with the voltage input end of the network relay, and the other end of the fuse is connected with a power supply end.
Further, the background server performs remote operation and remote monitoring according to a signal from the PLC controller, including:
(1) setting an IP address, comprising: the first two digits of the IP address locally connected with the background server are consistent with the delivery of the tower footing module;
(2) upgrading module firmware;
(3) setting a module port;
(4) state monitoring and signal feedback.
Further, the network relay includes: the first output end switch indicator light, the second output end switch indicator light, the network indicator light and the circuit board starting indicator light.
Furthermore, the circuit board of the network relay has the functions of lightning protection and overvoltage protection.
According to the network relay control device provided by the embodiment of the invention, the network relay, the surge protector and the PLC are arranged, the network relay is additionally arranged, the first output end of the network relay and the middle of the newly-added forward contactor are connected in series with a normally closed contact, the normally closed contact is clamped on the newly-added reverse contactor, the second output end of the network relay and the middle of the newly-added reverse contactor are connected in series with a normally closed contact, and the normally closed contact is clamped on the newly-added forward contactor. The invention can realize remote operation and remote monitoring of the fan, such as remote emergency stop reset, by utilizing the signal transmission of the PLC and the background server, and the emergency stop mode is more convenient than the prior mode, and the working life of the fan cannot be influenced.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a structural diagram of a network relay control apparatus according to an embodiment of the present invention;
FIG. 2 is a logic timing diagram of a network relay according to an embodiment of the invention;
FIG. 3 is a circuit diagram of a network relay according to an embodiment of the present invention;
fig. 4 is a connection relationship diagram of a network relay control device according to an embodiment of the present invention;
FIG. 5 is a diagram of a network topology according to an embodiment of the present invention;
FIG. 6 is an interface diagram of a computer IP setup according to an embodiment of the present invention;
FIG. 7 is an interface diagram for opening upgrade software according to an embodiment of the present invention;
FIG. 8 is an interface diagram for selecting a firmware upgrade file according to an embodiment of the present invention;
FIG. 9 is an interface diagram for opening a network control module client according to an embodiment of the present invention;
FIG. 10 is an interface diagram for setting parameters in TCP/IP according to an embodiment of the invention;
fig. 11a and 11b are interface diagrams of condition monitoring and signal feedback according to an embodiment of the invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The network relay control device provided by the invention is a network relay integrating a remote communication function and a switch port control function. The background server generates an action command to the module through the optical fiber network, receives the command execution action information fed back by the module and achieves the purposes of remote operation and remote monitoring.
As shown in fig. 1 and 4, a network relay control device according to an embodiment of the present invention includes: the system comprises a network relay 1, a surge protector 2 and a PLC (programmable logic controller) 3, wherein the network relay 1 is arranged on one side of the surge protector 2, the PLC 3 is connected with a power supply end of the network relay 1, the surge protector 2 is connected with the network relay 1, and the surge protector 2 is further connected with a reset wire from an engine room; the PLC controller 3 is further connected with the background server 4 through a network cable.
In the embodiment of the invention, a 24V network relay 1 is added and can be arranged on the left side of the surge protector 2.
1. Connecting a wire from the No. 52 terminal of the PLC 3 to the A1 port (for 24V) of the coil of the network relay 1;
2. connecting a wire from the No. 2 terminal of X106.8 to the A2 port (for 0V) of the coil of the network relay 1;
3. leading a wire from the No. 1 terminal of the surge protector 2 to the No. 11 port of the network relay 1;
4. a line is led from the No. 2 terminal of the surge protector 2 to the No. 14 port of the network relay 1.
As shown in fig. 4, the network relay 1 is configured to receive a fan motor start signal, a newly added forward contactor, a newly added reverse contactor, a dc power supply, and a safety device, where an input end of the newly added forward contactor is connected to a first output end of the network relay, an input end of the newly added reverse contactor is connected to a second output end of the network relay, and an input end of the network relay is connected to the fan motor start signal; the output end of the network relay plays a role of a switch. The background server sends an action command to the PLC through the optical fiber network, the PLC drives the network relay, and the network relay controls the action of the fan motor so as to realize remote operation and remote monitoring.
The working parameters of the network relay 1 are as follows:
working voltage: DC 5-24V; timer start voltage: the IN connection port DC 24V; contact input voltage: AC/DC universal AC230V or DC 24V; contact output voltage: the output voltage is the input voltage.
In the embodiment of the invention, a normally closed contact is connected in series between the first output end of the network relay and the newly-added forward contactor, the normally closed contact is clamped on the newly-added reverse contactor, a normally closed contact is connected in series between the second output end of the network relay and the newly-added reverse contactor, and the normally closed contact is clamped on the newly-added forward contactor.
That is, the time recording start port power supply (i.e., the IN port) must be connected to the original cluster fan motor start signal and must be DC24V IN order to start recording time after the motor starts;
the OUT ports of the network relay actually play a role of switching, OUT1 is a group, OUT2 is a group, each group has one power input (the input voltage is DC24V or AC230V, the input voltage is input according to the requirement of a newly-added motor starting contactor), the output OUT1 is connected with a newly-added forward contactor A1 (a normally-closed contact is required to be connected in series in the middle and is clamped on the newly-added reverse contactor), and the output OUT2 is connected with a newly-added reverse contactor A1 (a normally-closed contact is required to be connected in series in the middle and is clamped on the newly-added forward contactor);
in addition, the network relay of the present invention further includes: and one end of the fuse is connected with the voltage input end of the network relay, and the other end of the fuse is connected with a power supply end. Namely, DC24V is marked as a network relay working power supply, 24V needs to be directly introduced from the power supply, long power supply is achieved, and a 3.15A fuse is connected in series between 24V + and the module connection.
As shown in fig. 2, the logic control of the network relay of the present invention is as follows:
(1) the OUT 1-port controls the motor to rotate forward, the OUT 2-port controls the motor to rotate backward, as shown in a ladder diagram, T1(4 hours 00 minutes 00 seconds) is the motor forward rotation time, T2(80 seconds) is the time from the motor moving to the static time, T3(120 seconds) is the motor reverse rotation time, and the T2(80 seconds) is returned, and the process is carried OUT at T1.
(2) The T1, T2, T3 times can be changed according to requirements or actual conditions.
The timing function starts the power supply port: DC24V, the other loop 24V is powered normally, and the timer starts to work.
In still another embodiment of the present invention, a network relay includes: the first output end switch indicator light, the second output end switch indicator light, the network indicator light and the circuit board starting indicator light. Namely, a timer is added to start a power indicator (green); two switch indicator lamps are respectively arranged on the peripheries of the contacts OUT1 and OUT2, OUT1 is closed and corresponds to one lamp (yellow lamp) and the cut-off lamp is turned off, OUT2 is closed and corresponds to two lamps (yellow lamp) and the cut-off lamp is turned off.
In addition, the circuit board of the network relay has the functions of lightning protection and overvoltage protection. All devices use technical grade materials, the working temperature range is as follows: -30 ℃ to 65 ℃; the circuit board is manufactured as small as possible; contacts 1 and 2 are added to attract an indicator light, the attraction is that the light is on, and the indicator light is off when the contact is disconnected; the port and the indicator light are arranged at two ends; the circuit board working power supply supplies DC5-24V (current 0-3A), the timer starts the working power supply port DC24V (0-3A), and the contact switch interface (DC24V and AC230, 0-3A).
The network relay control device of the invention is provided with the following components:
1) a power supply:
and the direct current DC5-24V power supply input.
2) The circuit board is connected with a network port:
and the network cable connection mode is used for connecting the computer to change the internal time parameter.
3) The net mouth connects the pilot lamp:
when the network cable is successfully connected with the computer, an indicator light is arranged.
4) The circuit board starts the pilot lamp:
the circuit board power supply (serial number 1) is normal, the circuit board starts, and the indicator light lights (red light).
5) Working contact of the circuit board:
and the two groups of normally open contacts actually play a role of switching. Two by two, 4 interfaces in total, each group has a power input (the input voltage can satisfy DC24V and AC230V simultaneously, the output voltage is equal to the input voltage), the contact 1 is OUT1, and the contact 2 is OUT 2.
The invention is arranged in the control cabinet of the wind generating set, and can select the control port according to the actual requirements on site. The module has a network communication function, and is connected with the module communication port and the unit remote communication switch through a network cable to access the module into a wind power plant communication network. The control software on the background server can realize the remote action control of the module and receive feedback information. Fig. 5 is a diagram of a network topology structure according to an embodiment of the present invention.
The background server carries out remote operation and remote monitoring according to the signal from the PLC controller, and the method comprises the following steps:
(1) computer IP setup
The computer is connected with the module by a network cable, and since the factory IP address of the module is 192.168.1.199, the first three digits of the IP address of the computer can be consistent with the module, and the last digit needs to be set to any digit which is not 199. The specific arrangement is shown in figure 6.
(2) Module firmware upgrade
The upgrade software is first opened as shown in fig. 7.
Clicking the search module, displaying the IP address MAC code of the module in the module list, reading the version number after selecting the module, clicking the firmware upgrade after selecting the firmware path, displaying the upgrade progress by the upgrade progress bar, and displaying the successful upgrade dialog box after the upgrade is completed, as shown in FIG. 8. If a firmware upgrade has been performed, please ignore this step.
(3) Module port arrangement
The network control module client is opened as shown in fig. 9.
Clicking the search module will display the module IP in IP and port number, and set the parameters in TCP/IP as shown in fig. 10. Clicking on the setup, the indicator light on the left of the setup will display red. And in the status bar of the network relay, checking a relay which needs to execute an operation action, inputting a corresponding action instruction in an instruction sending box, returning and clicking to send, and if the instruction is successfully sent, displaying OK in a receiving dialog box to finish the port setting operation.
(4) State monitoring and signal feedback
In the client side of the network control module, a relay and an input interface which need to be monitored are selected, and when the selected relay or the selected input interface acts, the corresponding indicator light displays red. And meanwhile, message reminding appears on an information receiving interface. Fig. 11a and 11b are interface diagrams of status prompt and message prompt according to an embodiment of the present invention.
According to the network relay control device provided by the embodiment of the invention, the network relay, the surge protector and the PLC are arranged, the network relay is additionally arranged, the first output end of the network relay and the middle of the newly-added forward contactor are connected in series with a normally closed contact, the normally closed contact is clamped on the newly-added reverse contactor, the second output end of the network relay and the middle of the newly-added reverse contactor are connected in series with a normally closed contact, and the normally closed contact is clamped on the newly-added forward contactor. The invention can realize remote operation and remote monitoring of the fan, such as remote emergency stop reset, by utilizing the signal transmission of the PLC and the background server, and the emergency stop mode is more convenient than the prior mode, and the working life of the fan cannot be influenced.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (6)

1. A network relay control apparatus, comprising: the system comprises a network relay, a surge protector and a PLC (programmable logic controller), wherein the network relay is installed on one side of the surge protector, the PLC is connected with a power supply end of the network relay, the surge protector is connected with the network relay, and the surge protector is further connected with a reset wire from a cabin; the PLC controller is further connected with a background server through a network cable;
the network relay is used for receiving a fan motor starting signal, a newly-added forward contactor, a newly-added reverse contactor, a direct-current power supply and a safety device, wherein the input end of the newly-added forward contactor is connected with the first output end of the network relay, the input end of the newly-added reverse contactor is connected with the second output end of the network relay, and the input end of the network relay is connected with the fan motor starting signal; the output end of the network relay plays a role of switching;
the background server sends an action command to the PLC through an optical fiber network, the PLC drives the network relay, and the network relay controls the action of the fan motor so as to realize remote operation and remote monitoring.
2. The network relay control device of claim 1, wherein a normally closed contact is connected in series between the first output terminal of the network relay and the newly added forward contactor, and the normally closed contact is clamped on the newly added reverse contactor, and a normally closed contact is connected in series between the second output terminal of the network relay and the newly added reverse contactor, and the normally closed contact is clamped on the newly added forward contactor.
3. The network relay control device of claim 1, further comprising: and one end of the fuse is connected with the voltage input end of the network relay, and the other end of the fuse is connected with a power supply end.
4. The network relay control device of claim 1, wherein the background server performs remote operation and remote monitoring according to the signal from the PLC controller, and comprises:
(1) setting an IP address, comprising: the first two digits of the IP address locally connected with the background server are consistent with the delivery of the tower footing module;
(2) upgrading module firmware;
(3) setting a module port;
(4) state monitoring and signal feedback.
5. The network relay control device of claim 1, wherein the network relay comprises: the first output end switch indicator light, the second output end switch indicator light, the network indicator light and the circuit board starting indicator light.
6. The network relay control device of claim 1, wherein the circuit board of the network relay has lightning protection and overvoltage protection functions.
CN202010856837.1A 2020-08-24 2020-08-24 Network relay control device Pending CN111880469A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010856837.1A CN111880469A (en) 2020-08-24 2020-08-24 Network relay control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010856837.1A CN111880469A (en) 2020-08-24 2020-08-24 Network relay control device

Publications (1)

Publication Number Publication Date
CN111880469A true CN111880469A (en) 2020-11-03

Family

ID=73203256

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010856837.1A Pending CN111880469A (en) 2020-08-24 2020-08-24 Network relay control device

Country Status (1)

Country Link
CN (1) CN111880469A (en)

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