CN2590236Y - Modularized communicating intelligent motor protection - Google Patents
Modularized communicating intelligent motor protection Download PDFInfo
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- CN2590236Y CN2590236Y CN 02294337 CN02294337U CN2590236Y CN 2590236 Y CN2590236 Y CN 2590236Y CN 02294337 CN02294337 CN 02294337 CN 02294337 U CN02294337 U CN 02294337U CN 2590236 Y CN2590236 Y CN 2590236Y
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Abstract
The utility model discloses a modular communicating intelligent motor protection device, which adopts a modular structure which is provided with a current monitoring module, a body protecting module, a display control module, a communication module and other components, wherein, the current monitoring module can monitor three-phase current and grounding current, and an output end of the module is connected with an input end of the body protecting module. An output end of the body protecting module is respectively connected with the input ends of a remote indication and Button mould and the communication module, and an output end of the communication module is connected with a network. Based on the built-in PCB boards of various field buses and the design of a disposal type mutual exchange communication interface, the utility model is suitable for controlling and protecting low voltage motor, and the utility model is suitable for the places with high automation and the network systems of field buses and computer groups.
Description
Technical field
The utility model relates to a kind of motor protector, but more specifically to a kind of modularization communication intelligent motor protector.
Background technology
At present; domestic motor protection adopts the motor protector of thermal relay or Analogic Electronic Circuits mostly, and defencive function is few, precision is low, poor reliability, lacks the field bus communication interface; can't carry out exchanges data, thereby also can't adapt to the requirement of network management.Most electronic type motor protectors adopt integral structure, and its volume is big, interchangeability is poor, also is unsuitable for installing in small size switch control cubicle.
External motor protector also has the DEVICENET bus interface as the E3plus product of AB company, but the integral structure that adopts, and changes inconveniently, and this product does not have demonstration, can only pass through network settings, and versatility is poor; The ZEV of MOELLER company product is taked split-type structural, but does not have bus interface, shows to adopt Liquid Crystal Module, uses darker at the scene.
Summary of the invention
But the purpose of this utility model is to provide a kind of modularization communication intelligent motor protector with kinds of protect function, is furnished with various communication interfaces, and volume is little, connect prescription just, and higher reliability is arranged.
For achieving the above object, solution of the present utility model is: adopt the functional module combination, they comprise current monitoring module, main body protection module, long-range display button module, communication module; Wherein current monitoring module monitors main circuit three-phase current and earth current; the output of this module is connected with the input of main body protection module; the main body protection module is used to handle current sampling signal and becomes digital signal to carry out corresponding calculating, judgement and realization control; this module is also accepted host computer and is uploaded data, revises parameter and carry out control by the host computer requirement by the network delivery signal; the output of main body protection module respectively with the input interconnection of long-range demonstration and key-press module, communication module, the output of communication module and network interconnection.
Effect of the present utility model: by intelligent motor protector of the present utility model and the motor protection and the control unit that constitute by the utility model; it is few to have wiring; connect prescription just; defencive function is perfect, reliability is high; continuously-running; use obvious economic especially in fields such as metallurgy, colliery, petrochemical industry, harbour, railways.
Description of drawings
But Fig. 1 is modular communication intelligent motor protector entity schematic diagram;
Fig. 2 is that module was separated schematic diagram during motor protector of the present utility model used;
Fig. 3 is the modular circuit block diagram of modular motor protector;
Fig. 4 is the circuit block diagram of the main body protection module among Fig. 3;
Fig. 5 is the main program flow chart of the motor protector of utility model;
Fig. 6 is demonstration of the present utility model and key-press module circuit theory diagrams;
Fig. 7 is current signal processing module circuit theory diagrams of the present utility model;
Fig. 8 is communication interface module circuit theory diagrams of the present utility model;
Fig. 9 is input/output module circuit theory diagrams of the present utility model.
Below in conjunction with accompanying drawing and a preferred embodiment the utility model is elaborated.
With reference to Fig. 1, Fig. 2 is that the entity schematic diagram of motor protector of the present utility model separates schematic diagram with entity module.Wherein 19 is that main body protection module, 20 is that long-range demonstration and key-press module, 21 are communication module.Panel adopts 45cm * 45cm modularization design, has general interchangeability.Connect with the RJ45 connecting line between main body protection module and the current monitoring module, also separable, be convenient to install.The current monitoring module is installed in contactor main circuit point of incoming cables, and the main body protection module can be installed on the power distribution cabinet panel, is convenient to operating personnel's operation monitoring.Use the clamping of card rail groove between two modules.If external communication module has interchangeability, and can require transposing heterogeneous networks interface according to difference.
With reference to Fig. 3, this is the exchange module of motor protector of the present utility model, wherein the output of current monitoring module 1 is connected with the input of main body protection module 2, the output of main body protection module 2 respectively with long-range demonstration and key-press module 3, read over the input interconnection of module 4; Read over the input interconnection of the output and the network of module 4; The three-phase current and the earth current of current monitoring module 1 monitoring main circuit in the above-mentioned functional module, the main body protection module 2 main current sampling signals of handling become digital signal to carry out corresponding calculating, judgement and realization control, main body protection module 2 is also accepted the correct information of host computer by network delivery, upload data, revise parameter and carry out function such as control by the host computer requirement, what main body protection module 2 can also be accepted body or long-range demonstration and key-press module 3 also can show corresponding monitored parameter by key control and parameter modification; External interchangeable communication module 4 (or built-in interchangeable communication module) carries out communication with bus communication pattern and the host computer that the digital signal of main body protection module 2 converts appointment to, also with the communication format conversion of host computer and export to main body protection module 2; Described long-range demonstration and button control module 3 set and are used for the current signal that monitors of surveilled subject protection module 2 to the parameter of main body protection module 2 by panel button.
With reference to Fig. 4, this figure is the main body protection module, comprises current signal processing module 6, MCU processor 18, I/O input/output module 11, demonstration and key panel 12, communication interface (MODBUS) 13; Signal from current monitoring module 1 is delivered to MCU processor 18 by current signal processing module 6, the output of MCU processor respectively with I/O input/output module 11, show and the input interconnection of key panel module 12, communication interface module (MODBUS13) 13;
Wherein current signal processing module 6 is carried out linear amplification with the current signal that current monitoring module 1 transmits, and late-class circuit is protected, and is processed into the electric current that is fit to the MCU18 digital-to-analogue conversion.
Comprise in the MCU processor 18 among Fig. 4 and moving and underload protection software module 14, input and output process software module 8, communications parameter processing module 9, demonstration and button process software module 10 in A/D conversion and current value process software module 7, temperature rise software for calculation module 17, three-phase imbalance software module 16, earth current processing module 15, big electric current wink; The above-mentioned functions software module is solidificated among the MCU processor.
A/D conversion and current value processing module 7 realize the conversion of analog signal to digital signal; Temperature rise software for calculation module 17 is with the heat accumulation process under the simulating motor overload; Three-phase imbalance software module 16 is calculated degree of unbalance and is carried out corresponding judgment and processing; Earth current process software module 15 is grounded current protection; Big electric current wink moving and underload protection module 14, be function and protecting when moving and underload of big electric current wink; Input and output process software module 8 is judged and the output execution to realize input; Communications parameter process software module 9 is to realize and the exchange of upper machine communication parameter; Display button process software module 10 is handled to realize display menu, button identification.
With reference to Fig. 5, this figure is a main program flow chart of the present utility model.Program is made of the main program that a circulation 20ms carries out once, and sampling and A/D conversion are handled in timer interrupts, interrupt interval 0.4ms, and the time interruption also is other procedure time benchmark.Main program is made up of overload protection part, open phase protection part, ground protection part, rotation-clogging protection part, underload protection part, unbalance protection part, temperature (PTC) protection part and display button program and communication interface program.
Main program divides as lower module: opening initialization; Current value calculates and adjusts; Starting is differentiated and protection; The overload protection module; Big electric current wink the dynamic model piece; Uneven calculating and protection module; Underload protection module; Earth current computing and protection module; Inquiry button is also handled; Communications parameter is handled; Demonstration refreshes; The monitoring fault is also threaded off.
With reference to Fig. 6, described demonstration and key panel modular circuit comprise the digital circuit of demonstration, key circuit; Described display circuit comprises 5 74HC595 integrated package RE1～RE5,4 charactron DS1～DS4,7 light-emitting diode L1～L5; LM317 converts the 5V voltage control of VCC to voltage that the power supply charactron shows.
The serial data that MCU processor mouth line SER, CLK transmit is imported SX1～SX2 into, and again by SX1～SX5 parallel output data, REG mouth line opposition latchs, and control imports data into charactron DS1～DS4 and LED shows.
Described key circuit comprises long-pending integrated package 74HC165,4 button S1～S4 and 4 resistance R
3～R
6When button takes place, KK1～the KK4 level changes a mouthful line, thereby DB mouth SER, and CLK and RG2 control transformation become serial number, is read by the MCU device that comes out.
With reference to Fig. 7, described current signal processing module circuit comprises the current sample input circuit, far calculates amplifying circuit; Described current sample input circuit further comprises diode A
1, R
7～11, amplifier CCB and voltage-stabiliser tube A
2
With reference to Fig. 8, described communication interface module circuit further comprises resistance R
12, optocoupler OP1; Described output circuit comprises resistance R
13, R
14Diode D
1, relay K
1Triode Q.
With reference to Fig. 9, described input/output module circuit comprises input circuit, output circuit; Comprise two photoelectric isolating circuits, resistance R
15～19, integrated package 75176.
Claims (7)
1, but a kind of modularization communication intelligent motor protector comprises a modular motor protector, it is characterized in that:
Described modular protector comprises current monitoring module, main body protection module, long-range demonstration and key-press module, communication module;
Wherein the output of current monitoring module is the input that outputs to the main body protection module from the monitor signal of main circuit three-phase current and earth current; the current sampling signal that the output of main body protection module will be handled; be delivered to the input of long-range demonstration and key-press module and communication module respectively; and become interconnection, the output port of communication module and network interconnection.
2, motor protector as claimed in claim 1 is characterized in that:
Described main body protection module comprises current signal processing module, MCU, I/O input/output module, demonstration and key panel module, communication interface module;
Wherein current signal processing module outputs to the MCU processor after with signal processing, its output respectively with each input interconnection of I/O input/output module, demonstration and key panel module, communication interface module.
3, motor protector as claimed in claim 1 or 2 is characterized in that:
Further comprise A/D conversion and current value process software module, temperature rise software for calculation module, three-phase imbalance software module, earth current process software module in the MCU processor in the described main body protection module, big electric current wink is moving and underload protection software module, input and output process software module, communications parameter processing module, show and by key processing module;
Above-mentioned several functional module is solidificated among the MCU; The current signal that the current monitoring module is transmitted in the current signal processing carries out linear amplification and simple circuit is protected, and is processed into the electric current of MCU processor digital-to-analogue conversion.
4, motor protector as claimed in claim 1 or 2 is characterized in that:
Described demonstration and key panel module comprise the digital circuit of demonstration, key circuit;
Described display circuit comprises 5 integrated packages, 4 charactrons, 7 light-emitting diodes;
Described key circuit comprises an integrated package, 4 buttons and 4 resistance;
5, as the motor protector of stating of claim 1 or 2, it is characterized in that:
Described current signal processing module comprises the current sample input circuit, far calculates amplifying circuit; Described current sample input circuit further comprises diode A
1, R
7～11, amplifier CCB and voltage-stabiliser tube A
2
6, motor protector as claimed in claim 1 or 2 is characterized in that:
Described communication interface module circuit comprises resistance R
12, optocoupler OP1; Described output circuit comprises resistance R
13, R
14, diode D
1, relay K
1Triode Q.
7, motor protector as claimed in claim 1 or 2 is characterized in that:
Described input/output module circuit comprises input circuit, output circuit; Described input circuit comprises the anti-pipe of two photoelectricity circuit, resistance R
15～19, integrated package 75176.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02294337 CN2590236Y (en) | 2002-12-30 | 2002-12-30 | Modularized communicating intelligent motor protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02294337 CN2590236Y (en) | 2002-12-30 | 2002-12-30 | Modularized communicating intelligent motor protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2590236Y true CN2590236Y (en) | 2003-12-03 |
Family
ID=33751827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02294337 Expired - Lifetime CN2590236Y (en) | 2002-12-30 | 2002-12-30 | Modularized communicating intelligent motor protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2590236Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100413170C (en) * | 2004-12-08 | 2008-08-20 | 上海电器科学研究所（集团）有限公司 | Electric motor control protector |
| CN101452665A (en) * | 2008-12-29 | 2009-06-10 | 浙江中凯科技股份有限公司 | Display and control device for low-voltage apparatus |
| CN102082413A (en) * | 2010-11-25 | 2011-06-01 | 广东雅达电子股份有限公司 | Multi-loop low-voltage intelligent motor protection controller and control method thereof |
| CN102968103A (en) * | 2012-11-15 | 2013-03-13 | 南京中电自动化有限公司 | Data communication module of motor protector |
-
2002
- 2002-12-30 CN CN 02294337 patent/CN2590236Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100413170C (en) * | 2004-12-08 | 2008-08-20 | 上海电器科学研究所（集团）有限公司 | Electric motor control protector |
| CN101452665A (en) * | 2008-12-29 | 2009-06-10 | 浙江中凯科技股份有限公司 | Display and control device for low-voltage apparatus |
| CN102082413A (en) * | 2010-11-25 | 2011-06-01 | 广东雅达电子股份有限公司 | Multi-loop low-voltage intelligent motor protection controller and control method thereof |
| CN102968103A (en) * | 2012-11-15 | 2013-03-13 | 南京中电自动化有限公司 | Data communication module of motor protector |
| CN102968103B (en) * | 2012-11-15 | 2016-12-21 | 南京中电自动化有限公司 | data communication module of motor protector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI DIANKE SCIENCE CO., LTD. Free format text: FORMER OWNER: SHANGHAI ELECTRIC APPLIANCES SCIENCE INST. Effective date: 20090904 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090904 Address after: No. 505, Wuning Road, Shanghai, China: 200063 Patentee after: Shanghai Electrical Apparatus Research Institute Co., Ltd. Address before: No. 505, Wuning Road, Shanghai, China: 200063 Patentee before: Shanghai Electric Appliance Sci. Inst. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20121230 Granted publication date: 20031203 |