CN202602578U - Three-phase motor short circuit brake control circuit with tap switches - Google Patents
Three-phase motor short circuit brake control circuit with tap switches Download PDFInfo
- Publication number
- CN202602578U CN202602578U CN 201220310971 CN201220310971U CN202602578U CN 202602578 U CN202602578 U CN 202602578U CN 201220310971 CN201220310971 CN 201220310971 CN 201220310971 U CN201220310971 U CN 201220310971U CN 202602578 U CN202602578 U CN 202602578U
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- contactor
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Abstract
The utility model relates to the technical field of motor control circuits, in particular to a three-phase motor short circuit brake control circuit with tap switches. The three-phase motor short circuit brake control circuit with tap switches comprises a reversible/brake circuit and a control circuit; the reversible/brake circuit comprises a forward control three-phase AC (Alternating Current) contactor; the forward control three-phase AC contactor comprises a first input end, a first normally open contact group and a first output end; the first input end switches in a three-phase power supply; the reversible/brake circuit further comprises a reverse control three-phase AC contactor; the reverse control three-phase AC contactor comprises a second input end, a second normally open contact group and a second output end; the second input end and the first input end are connected in parallel; the second output end is in dislocation connection with two leading wires of the first output end; and leading wires of the second output end are subjected to the two groups of normally closed contact groups and are connected with one another in series to form three output ends, which are connected with one another by connecting wires to form a short circuit. The three-phase motor short circuit brake control circuit with tap switches does not need silicon-controlled switches, photoelectric couplers and other control circuits, has low cost and smaller size, is simple in assembly and convenient to use, and can run for a long time.
Description
Technical field
The utility model relates to the circuit for controlling motor technical field, especially relates to a kind of shunting switch three phase electric machine short circuit brake control circuit.
Background technology
Equipment in many electronic controls all be unable to do without dynamic braking device; The three phase electric machine braking circuit of being understood has multiple, and advantage and deficiency are respectively arranged, and different use occasions have different requirement; Such as the patent No.: the three phase electric machine braking circuit of 201120146181.0 intelligent electric actuating mechanisms; Be connected with the two A.C. contactor corresponding contacts that make said three phase electric machine switching-over running in the three phase electric machine current supply circuit, be respectively equipped with bi-directional thyristor switch in the winding loop of each A.C. contactor, the trigger end of each bi-directional thyristor switch is connected to a photoelectric coupler output end; This motor braking circuits is provided with cpu controller; This controller is provided with and makes three phase electric machine just change control output end and counter-rotating control output end, and each control output end is connected to corresponding light electric coupling input, and cpu controller is when carrying out the stall instruction; Carry out the control output end of enabled instruction and turn-off starting resistor immediately, turn-off after exporting starting resistor and being maintained until setting-up time another control output end.
Above-mentioned this patent is more outstanding at the three phase electric machine braking effect of High Accuracy Control, requires than higher but implement this braking technology, and structural manufacturing process is complicated, and circuit is loaded down with trivial details relatively, and used components and parts are also many, and cost also can be high.For requiring very not high and safeguarding simple use occasion, had better need simplification a bit good, the probability that is out of order also can hang down relatively, and especially motor is an inductive load, and is very high to the electronic component requirement, and particularly antijamming capability needs to pay attention to more.
The utility model content
Deficiency to above-mentioned prior art existence; The purpose of the utility model provides a kind of shunting switch three phase electric machine short circuit brake control circuit, and it has simple in structure, good braking effect; The characteristics that cost performance is high, can be used as corner, aperture, back and forth, the ideal circuit of controls such as up-down, stroke.
To achieve these goals, the technical scheme that the utility model adopted is:
Comprise a shunting switch motor reversible/braking circuit and with control shunting switch motor reversible/braking circuit carries out the control circuit of reversible and brake operating; Wherein, Described shunting switch motor is reversible/and braking circuit comprises forward control three-phase ac contactor; Described forward control three-phase ac contactor comprises first input end, first normally opened contact group that inserts three phase mains and first output that connects the shunting switch three phase electric machine; Described first input end inserts three phase mains; Also comprise a reverse control three-phase ac contactor, described reverse control three-phase ac contactor comprises second input, the second normally opened contact group and second output, and described second input and first input end are in parallel; Second output is connected with two dislocation in first output, and three outputs of the second output lead-out wire after two groups of normally-closed contact groups serial connections interconnect short circuit by line.
Preferably; Described control circuit comprises power input and power output end; Be parallel with control relay circuit and contactor control circuit between described power input and the power output end; Described control relay circuit comprises a stop button; After stopping button, divide two the tunnel, the one tunnel through one be connected on control relay after just changeing the normally opened contact of normally-closed contact and a counter-rotating start button of start button forward auxiliary relay coil, the reverse auxiliary relay self holding contact of its repeat circuit is attempted by the normally opened contact of the start button that reverses; The second tunnel normally-closed contact through the counter-rotating start button is connected on the reverse auxiliary relay coil of control relay again through the normally opened contact that just changes start button after, the forward centre controlled relay self holding contact of its repeat circuit is attempted by on the normally opened contact of start button; Described contactor control circuit is connected the reverse control three-phase ac contactor coil of three-phase ac contactor is connected three-phase ac contactor with the normally opened contact of forward auxiliary relay in addition forward, and to control the three-phase ac contactor coil mutual chain and connect and form by the normally opened contact of reverse auxiliary relay.
Preferably, described reverse control three-phase ac contactor coils from parallel connection of coils has the counter-rotating relay indicating light.
Preferably, described forward control three-phase ac contactor coils from parallel connection of coils has just to change a job and makes indicator light.
After adopting said structure, the utility model is compared the advantage that is had with prior art and is: do not need reverse-blocking tetrode thyristor, photoelectrical coupler; And other control circuit, the cost of material is low, has assembling simply; Volume is less, and is easy to maintenance, uses simple and direct; Antijamming capability is strong, can the reliability long-time running, and can with other control circuit interfaces.
Description of drawings
Fig. 1 be the shunting switch motor of the utility model reversible/the braking circuit structural representation;
Fig. 2 is the control circuit structural representation of the utility model.
Among the figure: the first input end of forward control three-phase ac contactor 1, three phase mains 11, the first normally opened contact group 12, first output 13, oppositely control three-phase ac contactor 2, second input 21, the second normally opened contact group 22, second output 23, two groups of normally-closed contact groups 3,4, line 5;
Power input X1; Power output end X2; Stop button TA; Just changeing start button QZ; Counter-rotating start button QF; Forward auxiliary relay coil K1; Reverse auxiliary relay self holding contact K2-a; Reverse auxiliary relay coil K2; Controlled relay self holding contact K1-a in the middle of the forward; The normally opened contact K2-b of reverse auxiliary relay; Reverse control three-phase ac contactor coil JC2; The normally opened contact K1-b of forward auxiliary relay in addition; Forward control three-phase ac contactor coil JC1; Counter-rotating relay indicating light FD; Just changing a job and making indicator light ZD.
Embodiment
The following stated is merely the preferred embodiment of the utility model, does not therefore limit the protection range of the utility model.
Embodiment; See that Fig. 1 is to shown in Figure 2: the shunting switch three phase electric machine short circuit brake control circuit of present embodiment comprise a shunting switch motor reversible/braking circuit and with control shunting switch motor reversible/braking circuit carries out the control circuit of reversible and brake operating; Wherein, Described shunting switch motor is reversible/and braking circuit comprises forward control three-phase ac contactor 1; Described forward control three-phase ac contactor 1 comprises first input end 11, first normally opened contact group 12 that inserts three phase mains and first output 13 that connects the shunting switch three phase electric machine; Described first input end 11 inserts three phase mains; Also comprise a reverse control three-phase ac contactor 2, described reverse control three-phase ac contactor 2 comprises second input 21, the second normally opened contact group 22 and second output 23, and described second input 21 is in parallel with first input end 11; Second output 23 is connected with two dislocation in first output 13, and three outputs of second output, 23 lead-out wires after two groups of normally-closed contact groups 3 and 4 serial connections interconnect short circuit by line 5.
Described control circuit comprises power input X1 and power output end X2; Be parallel with control relay circuit and contactor control circuit between described power input X1 and the power output end X2; Described control relay circuit comprises a stop button TA; After stopping button, divide two the tunnel; One the tunnel through one be connected on control relay after just changeing the normally opened contact of normally-closed contact and a counter-rotating start button QF of start button forward auxiliary relay coil K1, the reverse auxiliary relay self holding contact K2-a of its repeat circuit is attempted by the normally opened contact of counter-rotating start button QF; The second tunnel the normally-closed contact through counter-rotating start button QF; Behind the normally opened contact that just changes start button QZ, be connected on the reverse auxiliary relay coil K2 of control relay again, controlled relay self holding contact K1-a is attempted by on the normally opened contact of start button QF in the middle of the forward of its repeat circuit; Described contactor control circuit is connected the reverse control three-phase ac contactor coil JC2 of three-phase ac contactor, and is connected the forward control three-phase ac contactor coil JC1 of three-phase ac contactor with the normally opened contact K1-b of forward auxiliary relay in addition chain mutually and connect and form by the normally opened contact K2-b of reverse auxiliary relay, described chain mutually and connect and be meant two groups of three-phase ac contactor forwards and reverse forked working.
In addition, described reverse control three-phase ac contactor coil JC2 is parallel with counter-rotating relay indicating light FD; Described forward control three-phase ac contactor coil JC1 is parallel with just to change a job and makes indicator light ZD.
The operation principle of present embodiment is that power supply through stopping the normally-closed contact of button TA, counter-rotating start button QF, arrives the normally opened contact that is just changeing start button QZ by joint X1; Pressing when just changeing start button QZ; With the coil K2 power supply that has broken off control relay, just changeing the normally opened contact of start button QZ simultaneously and also connecting, it is closed that the coil K1 of control relay gets electric back normally opened contact K1-b; The normally-closed contact JC1-b of the coil JC1 of three-phase ac contactor is broken off; Break off shorting stub 5, the normally opened contact of JC1-a is closed simultaneously, the motor forward rotation; Equally, power supply through stopping button TA, just changeing the normally-closed contact of start button QZ, arrives the normally opened contact of counter-rotating start button QF by joint X1; When pressing counter-rotating start button QF; With the coil K1 power supply that has broken off control relay, the normally opened contact of the start button QF that reverses is simultaneously also connected, and it is closed that the coil K2 of control relay gets electric back normally opened contact K2-b; The normally-closed contact JC2-b of the coil JC2 of three-phase ac contactor is broken off; Break off shorting stub 5, the normally opened contact of JC2-a is closed simultaneously, the motor backward rotation; When pressing stop button TA, power supply is disconnected, control relay coil losing electricity and resetting; The coil of three-phase ac contactor is dead electricity and resetting also; Thereby make normally-closed contact JC1-b and normally-closed contact JC2-b all be switched on short circuit in wiring 5, the inverse electromotive force quilt that this moment, motor produced owing to inertia rotates is short circuit suddenly, and the opposing torque that an approximate inertia rotates appears in moment; The prevention motor is rotated further; Along with rapid speed descends, this opposing torque also diminishes thereupon, has accomplished motor and when stopping, having braked task immediately.
In addition; Present embodiment is just changeing through the manual operation shunting switch and is starting or the instruction of counter-rotating startup actuation of keys; Remove to switch the three-phase ac contactor coil by control relay; Realize the alternating movement of two three-phase ac contactors or reset stopping the alternating movement of other electronics, two three-phase ac contactors of electrical control signal commands for controlling or reset and stop also to belong to the utility model category.
Claims (4)
1. shunting switch three phase electric machine short circuit brake control circuit; It is characterized in that: comprise a shunting switch motor reversible/braking circuit and with control shunting switch motor reversible/braking circuit carries out the control circuit of reversible and brake operating; Wherein, Described shunting switch motor is reversible/and braking circuit comprises forward control three-phase ac contactor; Described forward control three-phase ac contactor comprises first input end, first normally opened contact group that inserts three phase mains and first output that connects the shunting switch three phase electric machine, and described first input end inserts three phase mains, also comprises a reverse control three-phase ac contactor; Described reverse control three-phase ac contactor comprises second input, the second normally opened contact group and second output; Described second input and first input end are in parallel, and second output is connected with two dislocation in first output, and three outputs of the second output lead-out wire after two groups of normally-closed contact groups serial connections interconnect short circuit by line.
2. shunting switch three phase electric machine short circuit brake control circuit as claimed in claim 1; It is characterized in that: described control circuit comprises power input and power output end; Be parallel with control relay circuit and contactor control circuit between described power input and the power output end; Described control relay circuit comprises a stop button; After stopping button, divide two the tunnel, the one tunnel through one be connected on control relay after just changeing the normally opened contact of normally-closed contact and a counter-rotating start button of start button forward auxiliary relay coil, the reverse auxiliary relay self holding contact of its repeat circuit is attempted by the normally opened contact of the start button that reverses; The second tunnel normally-closed contact through the counter-rotating start button is connected on the reverse auxiliary relay coil of control relay again through the normally opened contact that just changes start button after, the forward centre controlled relay self holding contact of its repeat circuit is attempted by on the normally opened contact of start button; Described contactor control circuit is connected the reverse control three-phase ac contactor coil of three-phase ac contactor is connected three-phase ac contactor with the normally opened contact of forward auxiliary relay in addition forward, and to control the three-phase ac contactor coil mutual chain and connect and form by the normally opened contact of reverse auxiliary relay.
3. shunting switch three phase electric machine short circuit brake control circuit as claimed in claim 2 is characterized in that: described reverse control three-phase ac contactor coils from parallel connection of coils has the counter-rotating relay indicating light.
4. shunting switch three phase electric machine short circuit brake control circuit as claimed in claim 3 is characterized in that: described forward control three-phase ac contactor coils from parallel connection of coils has just to change a job makes indicator light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220310971 CN202602578U (en) | 2012-06-27 | 2012-06-27 | Three-phase motor short circuit brake control circuit with tap switches |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220310971 CN202602578U (en) | 2012-06-27 | 2012-06-27 | Three-phase motor short circuit brake control circuit with tap switches |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202602578U true CN202602578U (en) | 2012-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220310971 Expired - Fee Related CN202602578U (en) | 2012-06-27 | 2012-06-27 | Three-phase motor short circuit brake control circuit with tap switches |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202602578U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107394752A (en) * | 2017-07-31 | 2017-11-24 | 上海纳杰电气成套有限公司 | A kind of three-station motor overload protection device |
| CN108075563A (en) * | 2017-12-18 | 2018-05-25 | 上海电科电器科技有限公司 | The reversing braking module of twin-power switch control system |
-
2012
- 2012-06-27 CN CN 201220310971 patent/CN202602578U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107394752A (en) * | 2017-07-31 | 2017-11-24 | 上海纳杰电气成套有限公司 | A kind of three-station motor overload protection device |
| CN108075563A (en) * | 2017-12-18 | 2018-05-25 | 上海电科电器科技有限公司 | The reversing braking module of twin-power switch control system |
| CN108075563B (en) * | 2017-12-18 | 2024-03-26 | 上海电科电器科技有限公司 | Reverse connection braking module of dual power switch control system |
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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 |
Granted publication date: 20121212 Termination date: 20140627 |
|
| EXPY | Termination of patent right or utility model |