CN201478812U - Duct motor driving circuit structure with automatic protection and warning functions - Google Patents
Duct motor driving circuit structure with automatic protection and warning functions Download PDFInfo
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- CN201478812U CN201478812U CN2009202086586U CN200920208658U CN201478812U CN 201478812 U CN201478812 U CN 201478812U CN 2009202086586 U CN2009202086586 U CN 2009202086586U CN 200920208658 U CN200920208658 U CN 200920208658U CN 201478812 U CN201478812 U CN 201478812U
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- phase
- driving tube
- underarm
- biasing resistor
- upper arm
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Abstract
The utility model discloses a duct motor driving circuit structure with automatic protection and warning functions. The duct motor driving circuit structure comprises a control signal isolation input circuit, a motor clockwise and anticlockwise rotation driving circuit, a driving current detection and control circuit and a warning signal isolation output circuit, wherein the control signal isolation input circuit is composed of a photoelectric coupler, a current-limiting resistance and a bias resistor, the motor clockwise and anticlockwise driving motor consists of two pairs of transistors which are connected in a push-pull mode, the driving current detection and control circuit consists of a sampling resistance and a protection control transistors, and the warning signal isolation output circuit is composed of a current-limiting resistor, a sensitivity control resistor and an photoelectric coupler.
Description
Technical field:
The utility model relates to a kind of drive unit of controlling printing machinery ink fountain motor, and particularly a kind of can effectively preventing drives the ink fountain motor-drive circuit structure of damaging with automatic protection and warning function because of load short circuits causes.
Background technology:
At present, the ink fountain motor in the printing machinery generally adopts dc micro-motor, controls the state of ink fountain baffle plate to reach the purpose of control inking amount by the phase angle that motor rotates.The situation that the ink fountain motor blocks does not change (being called stall on the specialty) takes place in the course of work of printing machine sometimes, can't switch between each winding because of motor in this case and make certain group coil be in the direct current conducting state, this moment, its inductance value equalled zero, and drive unit is equivalent to export direct short-circuit.Make that transistor is overheated to be burnt, also can burn the coil of motor when serious, thereby cause ink fountain to work, cause printed matter to be scrapped in a large number then.
To sum up analyze, scrap because of the ink fountain motor rotation blockage causes the improper printed matter that can cause of inking amount, this situation is generally caused by mechanical condition and belongs to recoverable fault, can recover operate as normal as long as handle a little.If but cause owing to motor rotation blockage that drive unit burns even motor coil burns then belong to permanent expendable fault, will cause printed matter to scrap in a large number.
The utility model content:
The purpose of this utility model is to provide a kind of automatic protection circuit for the ink fountain motor driver; the transistorized operating current of meeting volitional check when motor generation stall; in order to avoid burn drive unit and motor coil, thoroughly exempt this permanent expendable fault.This circuit also combines a kind of automatic alarm circuit simultaneously, is intended to can in time notify the master control system hard stop to handle when motor rotation blockage takes place, in order to avoid cause printed matter to scrap in a large number.
The utility model is achieved in that a kind of ink fountain motor-drive circuit structure with automatic protection and warning function, comprises A phase upper arm driving tube (V1); A phase underarm driving tube (V3); B phase upper arm driving tube (V2); B phase underarm driving tube (V4); A phase upper arm biasing resistor (R1); A phase underarm biasing resistor (R3); B phase upper arm biasing resistor (R2); B phase underarm biasing resistor (R4); A phase fly-wheel diode (D1); B phase fly-wheel diode (D2); the isolated diode of A (D3); the isolated diode of B (D4); A phase control signal current-limiting resistance (R5); B phase control signal current-limiting resistance (R6); A phase input coupler (OP1); B phase input coupler (OP2); current sampling resistor (R9); protection oxide-semiconductor control transistors (V5); warning output sensitivity controlling resistance (R7); warning output current limiting resistance (R10); warning output coupler (OP3).
Wherein, an end of the outflow end of the collector electrode of A phase upper arm driving tube (V1), A phase fly-wheel diode (D1), A phase biasing resistor (R1) is connected to the anode (VDD) of driving power; One end of the outflow end of the collector electrode of B phase upper arm driving tube (V2), B phase fly-wheel diode (D2), B phase biasing resistor (R2) is connected to the anode (VDD) of driving power; One end of warning output current limiting resistance (R10) is connected in the anode (VDD) of driving power;
The inflow end of the isolated diode of one end, A (D3) of the other end of the base stage of the base stage of A phase upper arm driving tube (V1), A phase underarm driving tube (V3), A phase biasing resistor (R1), A phase underarm biasing resistor (R3) is connected to the collector electrode of A phase input coupler (OP1); The inflow end of the isolated diode of one end, B (D4) of the other end of the base stage of the base stage of B phase upper arm driving tube (V2), B phase underarm driving tube (V4), B phase biasing resistor (R2), B phase underarm biasing resistor (R4) is connected to the collector electrode of B phase input coupler (OP2);
The A end of A phase input coupler (OP1) is connected in an end of control current-limiting resistance (R5); The other end that A controls signal controlling current-limiting resistance (R5) mutually is connected in the anode (VCC) of controlling power supply; The K end of A phase input coupler (OP1) is as the input terminal of control signal (IN1); The A end of B phase input coupler (OP2) is connected in an end of control current-limiting resistance (R6); The other end that B controls signal controlling current-limiting resistance (R6) mutually is connected in the anode (VCC) of controlling power supply; The K end of B phase input coupler (OP2) is as the input terminal of control signal (IN2);
The emitter of the emitter of the emitter of A phase input coupler (OP1), B phase input coupler (OP2), protection oxide-semiconductor control transistors (V5) and the other end of sampling resistor (R9) are connected to the negative terminal (VEE) of driving power;
The inflow end of the other end of the collector electrode of A phase underarm driving tube (V3), A phase underarm biasing resistor (R3), A phase fly-wheel diode (D1), the emitter that is connected to A phase upper arm driving tube (V1) form first drive output (OUT1); The inflow end of the other end of the collector electrode of B phase underarm driving tube (V4), B phase underarm biasing resistor (R4), B phase fly-wheel diode (D2), the emitter that is connected to B phase upper arm driving tube (V2) form second drive output (OUT2); Ink fountain motor (M) cross-over connection is between first drive output (OUT1) and second drive output (OUT2);
The ground level of the emitter of the underarm driving tube (V4) of the emitter of A phase underarm driving tube (V3), B phase, protection oxide-semiconductor control transistors (V5) is connected to an end of sampling resistor (R9); The K end of one end of output sensitivity controlling resistance (R7), warning output coupler (OP3) is connected to the collector electrode of protection oxide-semiconductor control transistors (V5); The A end of output coupler (OP3), the other end of output sensitivity controlling resistance (R7) are connected to the other end of output current limiting resistance (R10); The collector electrode of warning output coupler (OP3) is as the warning lead-out terminal, and emitter is connected in control signal ground (GND).
The utility model compared with prior art, the utlity model has following beneficial effect owing to adopted above-mentioned technical scheme:
1, the employing automatic protection circuit is effectively protected drive unit and motor coil, has thoroughly solved by mechanical breakdown to cause the problem that drive unit and motor coil burn.
2, adopt warning output sensitivity controlling resistance (R7) and when warning output coupler (OP3) makes motor rotation blockage reach certain depth output alarm signal, so promptly in time output alarm signal has been avoided again because of the too high false alarm that causes of sensitivity in order to avoid cause printed matter to scrap in a large number.Be the sensitivity that scalable is reported to the police and exported wherein as long as change the resistance of warning output sensitivity controlling resistance (R7).
3, have auto restore facility, circuit can recover operate as normal automatically after mechanical breakdown is got rid of.
Description of drawings:
Further specify the utility model below in conjunction with the drawings and specific embodiments.
Fig. 1 is the electrical schematic diagram that the utlity model has the ink fountain motor-drive circuit structure of automatic protection and warning function.
Embodiment:
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Referring to Fig. 1, an end of the collector electrode of A phase and B upper arm driving tube (V1, V2) mutually, the outflow end of fly-wheel diode (D1, D2), biasing resistor (R1, R2) and an end of warning output current limiting resistance R 10 are connected in the anode VDD of driving power.A is connected to the collector electrode of A phase and B input coupler (OP1, OP2) mutually with the base stage of B upper arm driving tube (V1, V2) mutually, the base stage of underarm driving tube (V3, V4), the other end of biasing resistor (R1, R2), an end of biasing resistor (R3, R4), the inflow end of isolating diode (D3, D4) mutually.A mutually and the inflow end of the other end of the collector electrode of B underarm driving tube (V3, V4) mutually, biasing resistor (R3, R4), fly-wheel diode (D1, D2), be connected to the emitter formation drive output (OUT1, OUT2) of upper arm driving tube (V1, V2).A is connected in the end of sampling resistor R9 with the emitter of B underarm driving tube (V3, V4) mutually, the ground level of protection oxide-semiconductor control transistors V5 mutually.The end of output sensitivity controlling resistance R7, the K of output coupler OP3 end are connected in the collector electrode of protection oxide-semiconductor control transistors V5.The A end of output coupler OP3, the other end of output sensitivity controlling resistance R7 are connected in the other end of output current limiting resistance R 10.The other end of the emitter sampling resistor R9 of the emitter of A phase and B input coupler (OP1, OP2) mutually, protection oxide-semiconductor control transistors V5 is connected in the negative terminal VEE of driving power.The collector electrode of output coupler OP3 is as the warning lead-out terminal, and emitter is connected in control signal ground GND.The A end of input coupler (OP1, OP2) is connected to an end of control current-limiting resistance (R5, R6).The other end of control current-limiting resistance (R5, R6) is connected in the anode VCC of control power supply.The K of input coupler (OP1, OP2) end is respectively as the input terminal of control signal (IN1, IN2).The cross-over connection of ink fountain motor M is between (OUT1, OUT2).
In the said structure, transistor V1 connects into push-pull mode with V3 and constitutes A mutually, transistor V2 connects into push-pull mode with V4 and constitutes B mutually, V1, V2 is respectively A phase and B upper arm mutually in the H type circuit, V3, V4 is respectively A phase and B underarm mutually in the H type circuit, D1 and D2 are that fly-wheel diode prevents that the inverse electromotive force of motor coil generation from making V1 or V2 reverse breakdown when being higher than supply voltage, R1, R2 is respectively the biasing resistor of V1 and V2, R3, R4 is respectively the biasing resistor of V3 and V4, OUT1, OUT2 is respectively A phase and B output mutually, direct current machine M is connected across between OUT1 and the OUT2, optocoupler OP1, OP2 is respectively A and isolates input, IN1 with B control signal mutually mutually, IN2 is respectively A phase and B control signal mutually.
When IN1 is 1 and IN2 V1 and V4 conducting and V2 and V3 end when being 0, electric current flows into motor by power positive end VDD through V1, OUT1, and flows back to power supply negative terminal VEE via OUT2, V4, R9, this moment the motor main story.
When IN1 is 0 and IN2 V2 and V3 conducting and V1 and V4 end when being 1, electric current flows into motor by power positive end VDD through V2, OUT2, and flows back to power supply negative terminal VEE via OUT1, V3, R9, motor anti-pass this moment.
No matter this shows that motor main story or reverse current must pass through sampling resistor R9; and the voltage difference at R9 two ends increases with the increase of electric current; when this voltage difference reaches the input knot conducting voltage of protection oxide-semiconductor control transistors V5, make protection oxide-semiconductor control transistors V5 conducting and by isolating diode D3, D4 with A mutually with B mutually upper arm transistor V1 and the basis set voltage of V2 drag down; the operating current of V1 or V2 is reduced, play transistor and the unlikely effect of burning of motor coil in the protection loop thus.
When protection oxide-semiconductor control transistors V5 was conducting to a certain degree, the voltage difference at warning output sensitivity controlling resistance R7 two ends reached the conducting voltage of warning output coupler OP3, makes alarm output signal ALARM effective simultaneously.
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 the foregoing description 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 claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (1)
1. have the ink fountain motor-drive circuit structure of automatic protection and warning function, this circuit comprises A phase upper arm driving tube (V1), A phase underarm driving tube (V3), B phase upper arm driving tube (V2), B phase underarm driving tube (V4), A phase upper arm biasing resistor (R1), A phase underarm biasing resistor (R3), B phase upper arm biasing resistor (R2), B phase underarm biasing resistor (R4), A phase fly-wheel diode (D1), B phase fly-wheel diode (D2), the isolated diode of A (D3), the isolated diode of B (D4), A phase control signal current-limiting resistance (R5), B phase control signal current-limiting resistance (R6), A phase input coupler (OP1), B phase input coupler (OP2), current sampling resistor (R9), protection oxide-semiconductor control transistors (V5), warning output sensitivity controlling resistance (R7), warning output current limiting resistance (R10), warning output coupler (OP3); It is characterized in that,
One end of the outflow end of the collector electrode of described A phase upper arm driving tube (V1), A phase fly-wheel diode (D1), A phase biasing resistor (R1) is connected to the anode (VDD) of driving power; One end of the outflow end of the collector electrode of described B phase upper arm driving tube (V2), B phase fly-wheel diode (D2), B phase biasing resistor (R2) is connected to the anode (VDD) of driving power; One end of described warning output current limiting resistance (R10) is connected in the anode (VDD) of driving power;
The inflow end of the isolated diode of one end, A (D3) of the other end of the base stage of the base stage of described A phase upper arm driving tube (V1), A phase underarm driving tube (V3), A phase biasing resistor (R1), A phase underarm biasing resistor (R3) is connected to the collector electrode of A phase input coupler (OP1); The inflow end of the isolated diode of one end, B (D4) of the other end of the base stage of the base stage of described B phase upper arm driving tube (V2), B phase underarm driving tube (V4), B phase biasing resistor (R2), B phase underarm biasing resistor (R4) is connected to the collector electrode of B phase input coupler (OP2);
The A end of described A phase input coupler (OP1) is connected in an end of control current-limiting resistance (R5); The other end that A controls signal controlling current-limiting resistance (R5) mutually is connected in the anode (VCC) of controlling power supply; The K end of A phase input coupler (OP1) is as the input terminal of control signal (IN1); The A end of described B phase input coupler (OP2) is connected in an end of control current-limiting resistance (R6); The other end that B controls signal controlling current-limiting resistance (R6) mutually is connected in the anode (VCC) of controlling power supply; The K end of B phase input coupler (OP2) is as the input terminal of control signal (IN2);
The emitter of the emitter of the emitter of described A phase input coupler (OP1), B phase input coupler (OP2), protection oxide-semiconductor control transistors (V5) and the other end of sampling resistor (R9) are connected to the negative terminal (VEE) of driving power;
The inflow end of the other end of the collector electrode of described A phase underarm driving tube (V3), A phase underarm biasing resistor (R3), A phase fly-wheel diode (D1), the emitter that is connected to A phase upper arm driving tube (V1) form first drive output (OUT1); The inflow end of the other end of the collector electrode of described B phase underarm driving tube (V4), B phase underarm biasing resistor (R4), B phase fly-wheel diode (D2), the emitter that is connected to B phase upper arm driving tube (V2) form the described ink fountain motor of second drive output (OUT2) (M) cross-over connection between first drive output (OUT1) and second drive output (OUT2);
The ground level of the emitter of the underarm driving tube (V4) of the emitter of described A phase underarm driving tube (V3), B phase, protection oxide-semiconductor control transistors (V5) is connected to an end of sampling resistor (R9); The K end of one end of described output sensitivity controlling resistance (R7), warning output coupler (OP3) is connected to the collector electrode of protection oxide-semiconductor control transistors (V5); The A end of described output coupler (OP3), the other end of output sensitivity controlling resistance (R7) are connected to the other end of output current limiting resistance (R10); The collector electrode of described warning output coupler (OP3) is as the warning lead-out terminal, and emitter is connected in control signal ground (GND).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202086586U CN201478812U (en) | 2009-08-31 | 2009-08-31 | Duct motor driving circuit structure with automatic protection and warning functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202086586U CN201478812U (en) | 2009-08-31 | 2009-08-31 | Duct motor driving circuit structure with automatic protection and warning functions |
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| Publication Number | Publication Date |
|---|---|
| CN201478812U true CN201478812U (en) | 2010-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202086586U Expired - Fee Related CN201478812U (en) | 2009-08-31 | 2009-08-31 | Duct motor driving circuit structure with automatic protection and warning functions |
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| CN (1) | CN201478812U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113002162A (en) * | 2021-02-23 | 2021-06-22 | 西门子工厂自动化工程有限公司 | Method for judging motor stalling alarm cause of offset press |
-
2009
- 2009-08-31 CN CN2009202086586U patent/CN201478812U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113002162A (en) * | 2021-02-23 | 2021-06-22 | 西门子工厂自动化工程有限公司 | Method for judging motor stalling alarm cause of offset press |
| CN113002162B (en) * | 2021-02-23 | 2022-10-14 | 西门子工厂自动化工程有限公司 | Method for judging motor stalling alarm cause of offset press |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20120831 |