CN201887706U - Water resistance starting control device for medium-voltage motor rotor - Google Patents
Water resistance starting control device for medium-voltage motor rotor Download PDFInfo
- Publication number
- CN201887706U CN201887706U CN2010206555097U CN201020655509U CN201887706U CN 201887706 U CN201887706 U CN 201887706U CN 2010206555097 U CN2010206555097 U CN 2010206555097U CN 201020655509 U CN201020655509 U CN 201020655509U CN 201887706 U CN201887706 U CN 201887706U
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- water resistance
- plc
- control device
- programmable logic
- logic controller
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Abstract
The utility model belongs to the technical field of electrical control, and discloses a water resistance starting signal control device for a medium-voltage motor rotor, which comprises a water resistor, a vacuum contactor, a plurality of auxiliary contacts, and a programmable logic controller. The vacuum contactor is connected with the water resistor, the auxiliary contacts are connected with the vacuum contactor, and the programmable logic controller is connected with the auxiliary contacts. The three-phase auxiliary contacts of the water resistance starting control device transmit short-connection signals to the PLC (programmable logic controller) via the vacuum contactor, the PLC instantly transmits a warning command to an alarm so as to remind electrical personnel of timely processing if a signal is lost due to pseudo receiving, dithering and the like of the signal, and at the moment, a loop of the motor rotor is fine in short connection. If two signals are lost, the PLC transmits a tripping command to a main motor, and tripping of the main motor is realized. Accordingly, tripping of the main motor of a medium-voltage motor due to loss, false tripping, dithering and the like of the control signals is avoided.
Description
Technical field
The utility model relates to the Electrical Control Technology field, particularly relates to a kind of middle piezoelectricity machine rotor water resistance enabling signal control device.
Background technology
The middle capacity of (3-10KV) motor of pressing is all bigger, generally all more than 200KW.In the last few years, the production capacity of many industries is increasing, the drive motors of its production equipment is also increasing, as in iron and steel, chemical industry, the use of the motor that 10000KW is above is more and more, in the piezoelectricity machine because of the main frame tripping operation problem that control signal is lost, malfunction, shake etc. cause often occurs, have a strong impact on the continuity of production.
The utility model content
(1) technical problem that will solve
The technical problems to be solved in the utility model is the main frame tripping operation that the piezoelectricity machine causes because of reasons such as control signal is lost, malfunction, shakes in how avoiding.
(2) technical scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of middle piezoelectricity machine rotor water resistance enabling signal control device, it comprises: water resistance, the vacuum contactor that is connected with described water resistance, the some auxiliary contacts mutually that connect with described vacuum contactor, and the programmable logic controller (PLC) that connects with described some auxiliary contacts mutually.
In the piezoelectricity machine rotor water resistance enabling signal control device, also comprise in above-mentioned: alarm and main motor, be connected with described programmable logic controller (PLC) respectively, accept the signal that described programmable logic controller (PLC) sends.
In the piezoelectricity machine rotor water resistance enabling signal control device, described some phase auxiliary contacts are three-phase in above-mentioned.
(3) beneficial effect
In the middle piezoelectricity machine rotor water resistance enabling signal control device that technique scheme provided, adopt the three-phase auxiliary contact to give programmable logic controller (PLC) (Programmable logic Controller from vacuum contactor, PLC) send the short circuit signal, if a phase signals is arranged because of reasons such as virtual connection, shakes, cause dropout, PLC promptly gives a warning order to alarm, points out electric personnel in time to go to handle, and this moment, rotor loop short circuit was good; If two-phase dropout, PLC promptly send trip signal and give main motor, main motor tripping operation; Thereby the main frame tripping operation that the piezoelectricity machine causes because of reasons such as control signal is lost, malfunction, shakes in avoiding.
Description of drawings
Fig. 1 is the theory diagram of the middle piezoelectricity machine rotor water resistance enabling signal control device of the utility model embodiment.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used to illustrate the utility model, but are not used for limiting scope of the present utility model.
Fig. 1 shows the theory diagram of the middle piezoelectricity machine rotor water resistance enabling signal control device of the utility model embodiment, it comprises: water resistance, the vacuum contactor that is connected with described water resistance, the some auxiliary contacts mutually that connect with described vacuum contactor, and the programmable logic controller (PLC) that connects with described some auxiliary contacts mutually; Also comprise: alarm and main motor, be connected with described programmable logic controller (PLC) respectively, accept the signal that described programmable logic controller (PLC) sends; Described some phase auxiliary contacts are three-phase.
Said apparatus carries out in the process of work, after general water resistance reduced-voltage starting is finished, and the action of short circuit vacuum contactor, the every phase auxiliary contact that is linked to each other by vacuum contactor sends a short circuit signal to PLC, and PLC thinks that short circuit is good, and operation is normal.If reasons such as a phase signals virtual connection, shake are arranged, cause dropout, PLC promptly gives a warning order to alarm, points out electric personnel in time to go to handle, and this moment, rotor loop short circuit was good; If two-phase dropout, PLC promptly send trip signal and give main motor, main motor tripping operation; Avoided reasons such as a phase signals virtual connection, shake like this, caused dropout, PLC promptly sends the situation of jumping main motor order, reduces and produces the probability that circuit stops production.
As can be seen from the above embodiments, the utility model embodiment gives programmable logic controller (PLC) (Programmable logic Controller by adopting the three-phase auxiliary contact from vacuum contactor, PLC) send the short circuit signal, if a phase signals is arranged because of reasons such as virtual connection, shakes, cause dropout, PLC promptly gives a warning order to alarm, points out electric personnel in time to go to handle, and this moment, rotor loop short circuit was good; If two-phase dropout, PLC promptly send trip signal and give main motor, main motor tripping operation; Thereby the main frame tripping operation that the piezoelectricity machine causes because of reasons such as control signal is lost, malfunction, shakes in avoiding.
The above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvement and replacement, these improvement and replacement also should be considered as protection range of the present utility model.
Claims (3)
1. piezoelectricity machine rotor water resistance enabling signal control device in a kind, it is characterized in that, comprising: water resistance, the vacuum contactor that is connected with described water resistance, the some auxiliary contacts mutually that connect with described vacuum contactor, and the programmable logic controller (PLC) that connects with described some auxiliary contacts mutually.
2. piezoelectricity machine rotor water resistance enabling signal control device in as claimed in claim 1 is characterized in that, also comprises: alarm and main motor, be connected with described programmable logic controller (PLC) respectively, and accept the signal that described programmable logic controller (PLC) sends.
3. piezoelectricity machine rotor water resistance enabling signal control device in as claimed in claim 1 is characterized in that described some phase auxiliary contacts are three-phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206555097U CN201887706U (en) | 2010-12-13 | 2010-12-13 | Water resistance starting control device for medium-voltage motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206555097U CN201887706U (en) | 2010-12-13 | 2010-12-13 | Water resistance starting control device for medium-voltage motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201887706U true CN201887706U (en) | 2011-06-29 |
Family
ID=44185250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206555097U Expired - Lifetime CN201887706U (en) | 2010-12-13 | 2010-12-13 | Water resistance starting control device for medium-voltage motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201887706U (en) |
-
2010
- 2010-12-13 CN CN2010206555097U patent/CN201887706U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110629 |