CN208969491U - Redundant PLC control system based on looped network - Google Patents
Redundant PLC control system based on looped network Download PDFInfo
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- CN208969491U CN208969491U CN201821749149.XU CN201821749149U CN208969491U CN 208969491 U CN208969491 U CN 208969491U CN 201821749149 U CN201821749149 U CN 201821749149U CN 208969491 U CN208969491 U CN 208969491U
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Abstract
The utility model relates to power or the distribution board of distribution, substation or switching device field, specially a kind of redundant PLC control system based on looped network.A kind of redundant PLC control system based on looped network, including concentrating coal supply and pulverized coal preparation control system (1) and breeze blowing control system (2), it is characterized in that: PLC master station (3) and PLC redundancy station (4) all include PLC machine frame (51), power module (52), ethernet module (53), CPU (54), redundant module (55) and slack (56), the core bus of ethernet module (53) PLC machine frame (51) is separately connected CPU (54) and redundant module (55), redundant module (55) is also connected with slack (56)；The ethernet module (53) of PLC master station (3) and PLC redundancy station (4) the two all connects the ethernet module (53) at the station IO (5).The utility model is adaptable, securely and reliably.
Description
Technical field
The utility model relates to power or the distribution board of distribution, substation or switching device field, specially a kind of base
In the redundant PLC control system of looped network.
Background technique
Production technology successional for iron and steel enterprise, matched automatic control system mostly use greatly single CPU, single scene
The control mode of bus (open loop) will lead to production if the communication of bus is broken down (such as bus or optical cable are dug disconnected)
Interruption, generate serious consequence.
In addition, in most control system, the signal on field operation box is all by PLC with the raising of cpu performance
Control.Although reducing control cable amount in this way, the cost of low-voltage power distributing cabinet (i.e. MCC) is saved, list CPU in PLC system
Configuration there is also hidden danger, once CPU breaks down, entire production just paralyses state.
Utility model content
In order to overcome the drawbacks of the prior art, a kind of adaptable, safe and reliable control equipment, the utility model are provided
Disclose a kind of redundant PLC control system based on looped network.
The utility model reaches goal of the invention by following technical solution:
A kind of redundant PLC control system based on looped network, including concentrate coal supply and pulverized coal preparation control system and pulverized coal injection
Control system is blown, coal supply and pulverized coal preparation control system is concentrated to complete to convey raw coal, pulverized coal preparation, dry gas producer control
System, coal powder collection, silo roof dedusting and powder public affairs processed additionally arrange the control applied, and breeze blowing control system is completed to injection tank charging, added
Pressure, waiting, blowing, the loop control of release, distributor blowing branch pipe control and blowing public affairs additionally arrange the control applied, it is characterized in that:
It concentrates coal supply and pulverized coal preparation control system and breeze blowing control system both of which includes PLC master station, PLC redundancy station and IO
It stands,
PLC master station and PLC redundancy station all include PLC machine frame, power module, ethernet module, CPU, redundant module and superfluous
Remaining light is fine, and power module, ethernet module, PLC and redundant module are all set in PLC machine frame, and each module in rack passes through machine
The core bus of frame connects.Redundant module is also connected with slack, the slack of PLC master station and the redundancy light at PLC redundancy station
Fibre interconnects；
The station IO includes ethernet module, and the ethernet module at both PLC master station and PLC redundancy station all passes through ethernet ring network
Connect the ethernet module at the station IO.
The redundant PLC control system based on looped network, it is characterized in that: connection IO station ethernet module and PLC master station
The ethernet ring network of ethernet module and the station connection IO ethernet module and PLC redundancy station ethernet module, when distance is no more than
Using the ethernet line with shielding when 100m, optical fiber is used when distance is more than 100m.
With advances in technology, Industrial Ethernet (Industrial Ethernet) is similar to common Ethernet with it
Property, be applied in control system more and more, the utility model be based on Industrial Ethernet, disclose a kind of applicability it is stronger,
The higher redundant PLC automatic control system of reliability.
The utility model according to the process characteristic of blast-furnace coal powder injection, coal powder injection control system be divided into 2 it is relatively independent
Control subsystem is mounted with redundant module (1756-RM2) respectively on two mainframes, and with slack (1756-RMC1)
Connection realizes that data high-speed is synchronous.When PLC breaks down, automatic no-harass switch to another PLC, will the point of interruption after
Continuous execute controls without any information of loss, high reliablity, and processing speed is fast.Due to using the Ethernet bus of closure,
When intermediate certain section of cable breaks down, the stability of system is unaffected, substantially increases signal acquisition and signal transmission
Reliability.
Under normal conditions, a subsystem of the bf coal injection system as entire blast furnace system, needs to incorporate entire blast furnace
In big EIC control system.Blast furnace master system uses Client/Server pattern, and server host also uses two-node cluster hot backup
Structure, and ring network structure is formed with the PLC of each subsystem ether net.Dual-Ethernet, Dual-switch, redundant server structure group
It, can automatic no-harass switch when a certain equipment therein or a certain network failure at looped network redundancy master system
To corresponding redundance unit or network, guarantee the continuity of communication and data exchange.
The utility model devises a kind of PLC control system of Redundant backup dual processors based on mononuclear type Industrial Ethernet network
System.With advances in technology, due to the similitude of Industrial Ethernet and common Ethernet, it is widely applied to industrial control system
In, when the ether web frame of closed-loop type ensures that communication network on-the-spot breaks down, it is ensured that steady production can be continued.With CPU
The raising of performance, original function of being realized by relay hardware-in-the-loop are more and more replaced by the logic control of PLC,
The importance of CPU is also increasing.The Redundant backup dual processors mode of the utility model design can guarantee as the CPU worked normally
When failure, the CPU of standby is able to achieve no-harass switch, is not disrupted continuously production.
The beneficial effects of the utility model are: control precision is high, it is adaptable, securely and reliably.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
The utility model is further illustrated below by way of specific embodiment.
Embodiment 1
A kind of redundant PLC control system based on looped network, including concentrate coal supply and pulverized coal preparation control system 1 and pulverized coal injection
Control system 2 is blown, as shown in Figure 1, specific structure is:
Concentrate coal supply and pulverized coal preparation control system 1 to complete to convey raw coal, pulverized coal preparation, dry gas producer control,
Coal powder collection, silo roof dedusting and powder public affairs processed additionally arrange the control applied, breeze blowing control system 2 complete to injection tank charging, pressurization,
Waiting, blowing, the loop control of release, distributor blowing branch pipe control and blowing public affairs additionally arrange the control applied,
Concentrate coal supply and pulverized coal preparation control system 1 and 2 both of which of breeze blowing control system include PLC master station 3,
PLC redundancy station 4 and the station IO 5,
PLC master station 3 and PLC redundancy station 4 all include PLC machine frame 51, power module 52, ethernet module 53, CPU54, superfluous
Complementary modul block 55 and slack 56, power module 52, ethernet module 53, PLC54 and redundant module 55 are all set to PLC machine frame 51
Interior, each module in rack is connected by the core bus of rack.Redundant module 55 is also connected with slack 56, PLC master station 3
Slack 56 and the slack 56 at PLC redundancy station 4 interconnect；
The station IO 5 includes ethernet module 53, and the ethernet module 53 of 4 the two of PLC master station 3 and PLC redundancy station all passes through
Ethernet ring network connects the ethernet module 53 at the station IO 5.
In the present embodiment: connection IO stand 5 ethernet modules 53 and 3 ethernet module 53 of PLC master station and the station connection IO 5 with
The too ethernet ring network of 4 ethernet module 53 of net module 53 and PLC redundancy station, when distance be no more than 100m when use band shield with
Too cable uses optical fiber when distance is more than 100m.
With advances in technology, Industrial Ethernet (Industrial Ethernet) is similar to common Ethernet with it
Property, be applied in control system more and more, the present embodiment be based on Industrial Ethernet, disclose a kind of applicability it is stronger, can
By the higher redundant PLC automatic control system of property.
The present embodiment is divided into 2 relatively independent controls according to the process characteristic of blast-furnace coal powder injection, coal powder injection control system
Subsystem is mounted with redundant module (1756-RM2) respectively on two mainframes, and is connected with slack (1756-RMC1)
It connects, realizes that data high-speed is synchronous.When a PLC breaks down, automatic no-harass switch to another PLC will continue in the point of interruption
It executes and controls without any information of loss, high reliablity, processing speed is fast.Due to using the Ethernet bus of closure, when
When intermediate certain section of cable breaks down, the stability of system is unaffected, and substantially increase signal acquisition and signal transmission can
By property.
Under normal conditions, a subsystem of the bf coal injection system as entire blast furnace system, needs to incorporate entire blast furnace
In big EIC control system.Blast furnace master system uses Client/Server pattern, and server host also uses two-node cluster hot backup
Structure, and ring network structure is formed with the PLC of each subsystem ether net.Dual-Ethernet, Dual-switch, redundant server structure group
It, can automatic no-harass switch when a certain equipment therein or a certain network failure at looped network redundancy master system
To corresponding redundance unit or network, guarantee the continuity of communication and data exchange.
The system software of the present embodiment is as follows: control system uses Windows7 operating system, using Rockwell
Logix5000 V20 programming software realizes system-level monitoring.
The system hardware configuration of the present embodiment is as shown in the table:
Claims (2)
1. a kind of redundant PLC control system based on looped network, including concentrate coal supply and pulverized coal preparation control system (1) and pulverized coal injection
Blow control system (2), it is characterized in that: concentrate coal supply and pulverized coal preparation control system (1) and breeze blowing control system (2) this two
Person includes that PLC master station (3), PLC redundancy station (4) and IO stand (5),
PLC master station (3) and PLC redundancy station (4) all include PLC machine frame (51), power module (52), ethernet module (53), CPU
(54), redundant module (55) and slack (56), power module (52), ethernet module (53), CPU (54) and redundant module
(55) it is all set in PLC machine frame (51), power module (52), ethernet module (53), CPU (54) and redundant module (55) pass through
Core bus connection redundant module (55) of PLC machine frame (51) is also connected with slack (56), the slack of PLC master station (3)
(56) it is interconnected with the slack (56) at PLC redundancy station (4)；
The station IO (5) includes ethernet module (53), the ethernet module (53) of PLC master station (3) and PLC redundancy station (4) the two
The ethernet module (53) at the station IO (5) is all connected by ethernet ring network.
2. the redundant PLC control system based on looped network as described in claim 1, (5) Ethernet mould it is characterized in that: connection IO stands
Block (53) and PLC master station (3) ethernet module (53) and connection IO station (5) ethernet module (53) and PLC redundancy station (4) with
The too ethernet ring network of net module (53), when distance is no more than 100m using the ethernet line with shielding, when distance is more than 100m
Shi Caiyong optical fiber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821749149.XU CN208969491U (en) | 2018-10-27 | 2018-10-27 | Redundant PLC control system based on looped network |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821749149.XU CN208969491U (en) | 2018-10-27 | 2018-10-27 | Redundant PLC control system based on looped network |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110879565A (en) * | 2019-12-06 | 2020-03-13 | 北京和利时智能技术有限公司 | Dual-computer redundancy control system and redundancy control/fault monitoring method and device thereof |
| CN110955187A (en) * | 2019-12-18 | 2020-04-03 | 中国长江电力股份有限公司 | PLC control system and control method for dual power supply and communication of speed regulator hydraulic system |
-
2018
- 2018-10-27 CN CN201821749149.XU patent/CN208969491U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110879565A (en) * | 2019-12-06 | 2020-03-13 | 北京和利时智能技术有限公司 | Dual-computer redundancy control system and redundancy control/fault monitoring method and device thereof |
| CN110955187A (en) * | 2019-12-18 | 2020-04-03 | 中国长江电力股份有限公司 | PLC control system and control method for dual power supply and communication of speed regulator hydraulic system |
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