CN203218860U - Controller of reduced-voltage starting cabinet - Google Patents
Controller of reduced-voltage starting cabinet Download PDFInfo
- Publication number
- CN203218860U CN203218860U CN 201320039375 CN201320039375U CN203218860U CN 203218860 U CN203218860 U CN 203218860U CN 201320039375 CN201320039375 CN 201320039375 CN 201320039375 U CN201320039375 U CN 201320039375U CN 203218860 U CN203218860 U CN 203218860U
- Authority
- CN
- China
- Prior art keywords
- unit
- main control
- control unit
- cpu main
- protection
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Motor And Converter Starters (AREA)
Abstract
The utility model relates to a controller of a reduced-voltage starting cabinet, which comprises a CPU main control unit, a relay output unit, a signal detection unit, a three-phase current sampling unit, a DC meter driving unit, a parameter setting unit, a panel operating and indicating unit and a power supply unit, wherein the relay output unit and the DC meter driving unit are led out from the CPU main control unit unidirectionally, the signal detection unit, the three-phase current sampling unit, the power supply unit and the parameter setting unit are connected to the CPU main control unit unidirectionally, and the panel operating and indicting unit and the CPU main control unit are connected bidirectionally. The controller provided by the utility model has good monitoring and protecting functions for conditions such as overtime, overcurrent, rotation blocking which means a motor is blocked, alternative imbalance in a circuit, and the like, and effectively prolongs the service life of the reduced-voltage starting cabinet.
Description
Technical field
The utility model relates to the electric machines control technology field, is specifically related to a kind of controller of reduced voltage starting cabinet.
Background technology
Application scenario at actual electric power; immediate current impulsive force during actuating motor is very big; therefore; the general reduced-voltage starting cabinet that adopts carries out a smooth transition to the startup of motor; and then reduce because of the excessive influence degree to electrical network of immediate current, make equipment such as electrical network and mechanical load be able to effective protection.
Reduced-voltage starting cabinet on the existing market generally can both be realized normal over-current and-load protection in running, and when electric motor starting, (start moment), but embody following defectives: 1, can't detection time in this process relay whether change according to Preset Time, if the time relay damages, then can take place not burn transformer because the reduced-voltage starting cabinet is not transformed into the normal condition operation for a long time; 2, the motor of general reduced-voltage starting cabinet all can produce about 3-4 times starting current of rated current in start-up course, this starting current is allowed band, and produce unavoidably the over-current phenomenon avoidance of long-range this starting current scope, unresolved detection and protection to this starting current still in the prior art in the reality because of various factors; 3, in the prior art, when under manual state, starting, do not have the startup time-out protection function of motor; 4, startup cabinet controller of the prior art can't be realized the protection of alternate imbalance and electrical network high-pressure side phase shortage accurately; Only commentaries on classics (motor blocks) defencive function when 5, lacking the startup of reduced-voltage starting cabinet in the prior art.Based on above-mentioned defective, it is more and extremely more urgent to a kind of demand of more reliable and more stable reduced-voltage starting cabinet to embody market.
Summary of the invention
The purpose of this utility model is to overcome the defective of prior art, the controller of reliable and stable reduced voltage starting cabinet when a kind of the startup is provided.
For achieving the above object, the utility model adopts a kind of controller of reduced voltage starting cabinet, comprises the CPU main control unit: be used for the overtime protection of startup, overcurrent protection, alternate imbalance or open-phase protection and the motor rotation blockage protection of electric motor starting process;
Relay output unit: according to actuating motor start-up course in the default time range;
Detecting signal unit: be used for start-up time of motor and the overcurrent when starting detects sampling;
Three-phase current sampling unit: be used for three-phase electricity is carried out the real-time sampling signal and passed to the CPU main control unit;
Direct current table driver element: when being used for electric motor starting and the electric current of running show;
Parameter setup unit: be used for setup parameter;
Panel operation and indicating member: be used for hand/self shifter and parameter and show;
Power subsystem: be used for powering to the CPU main control unit.
Wherein said relay output unit, direct current table driver element pick out by the CPU main control unit is unidirectional respectively, described detecting signal unit, three-phase current sampling unit, power subsystem and parameter setup unit be unidirectional accesss CPU main control unit respectively, the two-way connection of formation between described panel operation and indicating member and the described CPU main control unit.
The utility model is by the improvement to prior art; realized that the CPU main control unit is to the overtime protection of startup, overcurrent protection, alternate imbalance or open-phase protection in the electric motor starting process of reduced-voltage starting cabinet and motor rotation blockage protection; make that the startup of reduced-voltage starting cabinet is more reliable and more stable; and effectively prolonged useful life of reduced-voltage starting cabinet; reduced the impulsive force to electrical network; than reduced-voltage starting cabinet of the prior art; reduced the damage risk of electrical network or connection device, practical more economically.
Description of drawings
Fig. 1 is the frame principle figure of the utility model embodiment.
Fig. 2 is the utility model embodiment circuit theory diagrams.
Embodiment
Shown in Fig. 1-2, specific embodiment of the utility model is a kind of controller of reduced voltage starting cabinet, comprises
CPU main control unit 1: be used for the overtime protection of startup, overcurrent protection, alternate imbalance or open-phase protection and the motor rotation blockage protection of electric motor starting process;
Relay output unit 2: according to actuating motor start-up course in the default time range;
Detecting signal unit 3: be used for start-up time of motor and the overcurrent when starting etc. detected sampling;
Three-phase current sampling unit 4: be used for three-phase electricity is carried out the real-time sampling signal and passed to the CPU main control unit;
Direct current table driver element 5: when being used for electric motor starting and the electric current of running show;
Parameter setup unit 6: be used for setup parameter;
Panel operation and indicating member 7: be used for hand/self shifter and parameter and show;
Power subsystem 8: be used for powering to the CPU main control unit.
Wherein said relay output unit 2, direct current table driver element 5 are respectively by CPU main control unit 1 unidirectional picking out, described detecting signal unit 3, three-phase current sampling unit 4, power subsystem 8 and parameter setup unit 6 be unidirectional accesss CPU main control unit 1 respectively, the two-way connection of formation between described panel operation and indicating member 7 and the described CPU main control unit 1.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The protection range that the utility model requires defines according to appended claim and equivalent thereof.
Claims (1)
1. the controller of a reduced voltage starting cabinet is characterized in that:
Comprise the CPU main control unit: be used for the overtime protection of startup, overcurrent protection, alternate imbalance or open-phase protection and the motor rotation blockage protection of electric motor starting process;
Relay output unit: according to actuating motor start-up course in the default time range;
Detecting signal unit: be used for start-up time of motor and the overcurrent when starting detects sampling;
Three-phase current sampling unit: be used for three-phase electricity is carried out the real-time sampling signal and passed to the CPU main control unit;
Direct current table driver element: when being used for electric motor starting and the electric current of running show;
Parameter setup unit: be used for setup parameter;
Panel operation and indicating member: be used for hand/self shifter and parameter and show;
Power subsystem: be used for powering to the CPU main control unit;
Wherein said relay output unit, direct current table driver element pick out by the CPU main control unit is unidirectional respectively, described detecting signal unit, three-phase current sampling unit, power subsystem and parameter setup unit be unidirectional accesss CPU main control unit respectively, the two-way connection of formation between described panel operation and indicating member and the described CPU main control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320039375 CN203218860U (en) | 2013-01-17 | 2013-01-17 | Controller of reduced-voltage starting cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320039375 CN203218860U (en) | 2013-01-17 | 2013-01-17 | Controller of reduced-voltage starting cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203218860U true CN203218860U (en) | 2013-09-25 |
Family
ID=49208363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320039375 Expired - Lifetime CN203218860U (en) | 2013-01-17 | 2013-01-17 | Controller of reduced-voltage starting cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203218860U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932868A (en) * | 2015-10-28 | 2016-09-07 | 江苏国网自控科技股份有限公司 | Restarting device for automatic resetting frequency converter and control method of restarting device |
-
2013
- 2013-01-17 CN CN 201320039375 patent/CN203218860U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932868A (en) * | 2015-10-28 | 2016-09-07 | 江苏国网自控科技股份有限公司 | Restarting device for automatic resetting frequency converter and control method of restarting device |
| CN105932868B (en) * | 2015-10-28 | 2019-03-08 | 江苏国网自控科技股份有限公司 | Restarter and its control method for the frequency converter that automatically resets |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102324734A (en) | Default phase protecting method and device for three-phase motor | |
| CN203260997U (en) | Three-phase safety electricity-using appliance | |
| CN203589836U (en) | Intelligent control apparatus of starting signal for diesel generating set | |
| CN203218860U (en) | Controller of reduced-voltage starting cabinet | |
| CN202550484U (en) | Intelligent monitoring and motor protecting device with liquid level control function for electric water pump | |
| CN203260995U (en) | Single-phase safety electricity-using appliance | |
| CN203513016U (en) | Power supply open-phase protection device of lift control cabinet | |
| CN102611075A (en) | Smart monitoring protective device of electric water pump with liquid level control | |
| CN102832798B (en) | One powers on buffer control circuit and control method thereof | |
| CN201975763U (en) | Programmable logic controller (PLC) control system of electric motor | |
| CN202455301U (en) | Program-control energy-saving device for motor | |
| CN204216568U (en) | A kind of motor protecter | |
| CN204131095U (en) | The anti-shake electric installation of low voltage frequency converter | |
| CN210536284U (en) | Over-voltage and under-voltage protector for power supply | |
| CN104820139A (en) | Three-phase power supply phase lack detection device | |
| CN102570965B (en) | Program control energy-saving device of motor | |
| CN201937247U (en) | Abnormal high-voltage protection circuit | |
| CN202475327U (en) | Automatic alarm control device of motor | |
| CN202797896U (en) | Three-phase asynchronous motor open-phase protector | |
| CN104377804A (en) | Control system of PLC controllable dual-power switch | |
| CN110829458A (en) | Synchronous intelligent sub-compensation capacitor | |
| CN205846703U (en) | Multifunctional electric motor-protecting device | |
| CN103434907A (en) | Power supply open-phase protection device of elevator control cabinet | |
| CN203607350U (en) | Tripping device of electronic molded case circuit breaker | |
| CN104749479A (en) | Power supply phase failure detecting method and device for elevator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 325600 no.328, wei19 Road, Yueqing Economic Development Zone, Zhejiang Province Patentee after: XINLING ELECTRICAL Co.,Ltd. Address before: 325604, Yueqing, Zhejiang province Liushi town wide industrial zone Patentee before: XINLING ELECTRICAL Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130925 |