CN201349105Y - Low-voltage motor controlling device - Google Patents
Low-voltage motor controlling device Download PDFInfo
- Publication number
- CN201349105Y CN201349105Y CNU200920066652XU CN200920066652U CN201349105Y CN 201349105 Y CN201349105 Y CN 201349105Y CN U200920066652X U CNU200920066652X U CN U200920066652XU CN 200920066652 U CN200920066652 U CN 200920066652U CN 201349105 Y CN201349105 Y CN 201349105Y
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- China
- Prior art keywords
- case
- motor
- control button
- control
- branch
- 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 - Fee Related
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Abstract
The utility model discloses a low-voltage motor controlling device. The low-voltage motor controlling device is characterized in that a branch control button box is arranged beside each electric motor; a protection switch is arranged in the branch control button box; and a master control box and the branch control button box are connected by adopting a branch power cable. The utility model has the advantages that the utility model can save the amount of cables, reduces the loss and investment, avoids the installation of a plurality of large-scale cable channels during the construction, reduces the thickness of a pool wall, and saves the civil engineering investment.
Description
Technical field
The utility model relates to the technical field of Motor Control, is specifically related to a kind of low voltage motor control appliance.
Background technology
A large amount of water treatment buildings are arranged in the municipal drainage engineering, the low-tension motor of many low capacities is installed on these structures, and the hydrogen sulfide (H of erecting bed
2S) concentration is higher, and corrosiveness of the environment is strong, and the control of motor often adopts MCC centralized control, scene to establish the mode of button case, and MCC is located at indoor, away from the device context of seriously corroded.But adopt this motor to power one to one, cause the quantity of power cable many, loss is big.Same man-to-man control forms also causes control cable to increase, and the IO module of PLC/DCS system increases.For arranging these cables, also a large amount of cable troughs need be set on the structures, cause that pool wall thickens, construction investment also increases bigger thereupon.
The utility model content
The purpose of this utility model is to provide a kind of low-tension motor control appliance of saving lot of materials and cutting down the consumption of energy.
In order to realize this purpose, the technical solution of the utility model is as follows: a kind of low voltage motor control appliance, it is characterized in that, 1 branch control button case is established on every motor side, the output of master control case divides control button case to be connected by branch's power cable and all, each divides control button case to be connected with corresponding motor, and the input of master control case is connected with higher level electric substation.
Advantage of the present utility model is to save number of cables, reduces the wastage and invests; When construction, can avoid the setting of large-scale a large amount of cable troughs, reduce pool wall thickness, save construction investment.
Description of drawings
Fig. 1 is a circuit diagram of the present utility model
Fig. 2 is the circuit diagram of prior art
Fig. 3 is for dividing the circuit diagram of control button case
Embodiment
A kind of low voltage motor control appliance, it is characterized in that, 1 branch control button case 2 is established on every motor 1 side, and the output of master control case 4 adopts branch's power cable 5 and all to divide the input of control button casees 2 to be connected, and the input of master control case 4 is connected with higher level electric substation 6.Each divides the output of control button case 2 to be connected with corresponding motor 1 by cable straight joint 7.
No matter connect how many platform motor 1 down, only establish 1 cover Electric Machine Control components and parts in the master control case 4, comprise 1 circuit breaker, 1 contactor or 2 contactors (being used for clockwise and anticlockwise motor), some buttons and indicator light, accept the PLC order and also only open/stop one pair of switching value signal of order, only 1 on output power cable.The opening of every motor can be set on its case face, stop, faulty indication, the opening of master control loop, stop, the power supply indication.The master control case can be located in the MCC power distribution station.After the master control case sent control command, dividing some motors under the control button case must be to open simultaneously, stops simultaneously; After can also stopping at the same time, the motor excision with the needs maintenance continues to allow other motor open operation simultaneously again.What no matter are connected under the master control case divide control button case, master control case and to divide the load current conductor between the control button case only be a cable or bus.As shown in the figure, this master control case 4 comprises the circuit breaker Q F that is connected in series, contactor KM summation current transformer T.
Divide the protection components and parts of establishing the separate unit motor in the control button case 2, comprise 1 circuit breaker Q F, 1 thermal relay FR and operation of separate unit motor and malfunction indicator lamp.Divide the quantity of control button case 2 to be equal to low-tension motor quantity, for one to one.The normal start and stop of separate unit motor are the orders of accepting master control case 4, can this motor be separated by circuit breaker when separate unit machinery check and repair or fault, can not influence miscellaneous equipment.Thermal relay provides the overload protection and the open-phase protection of separate unit motor.As shown in the figure, this branch control button case 2 comprises circuit breaker Q F and the thermal relay FR that is connected in series.
From the above description as can be known, the utility model has been taken into account the n platform motor of same system, how much no matter controls electronic board number, and the master control case is only accepted the automatic start-stop order of 1 cover, and some the motor of being controlled normally operate to simultaneously and open, close simultaneously.Other motor in fault or not influence of the maintenance separate unit motor system.Maybe need maintenance if the separate unit electrical fault occurs, then can from system, it be separated separately, and allow other motor continue to move.If the motor of control is the n platform simultaneously, then more man-to-man control mode, power cable can be saved
Wherein n is preferably 4～20, promptly establishes 4～20 motor altogether and divides control button case.
Claims (3)
1, a kind of low voltage motor control appliance, it is characterized in that, 1 branch control button case is established on every motor side, the output of master control case divides control button case to be connected by branch's power cable or busbar with all, each divides control button case to be connected with corresponding motor, and the input of master control case is connected with higher level electric substation.
2, the low voltage motor control appliance shown in claim 1 is characterized in that this master control case comprises the circuit breaker that is connected in series, the contactor summation current transformer.
3, the low voltage motor control appliance shown in claim 1 is characterized in that establishing circuit breaker and the thermal relay that is connected in series in the branch control button case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920066652XU CN201349105Y (en) | 2009-01-08 | 2009-01-08 | Low-voltage motor controlling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920066652XU CN201349105Y (en) | 2009-01-08 | 2009-01-08 | Low-voltage motor controlling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201349105Y true CN201349105Y (en) | 2009-11-18 |
Family
ID=41368571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200920066652XU Expired - Fee Related CN201349105Y (en) | 2009-01-08 | 2009-01-08 | Low-voltage motor controlling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201349105Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106000872A (en) * | 2016-06-22 | 2016-10-12 | 首钢京唐钢铁联合有限责任公司 | Control loop for roll screen |
-
2009
- 2009-01-08 CN CNU200920066652XU patent/CN201349105Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106000872A (en) * | 2016-06-22 | 2016-10-12 | 首钢京唐钢铁联合有限责任公司 | Control loop for roll screen |
| CN106000872B (en) * | 2016-06-22 | 2019-06-11 | 首钢京唐钢铁联合有限责任公司 | A kind of roll screen control loop |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091118 Termination date: 20180108 |