CN210835645U - Output circuit of industrial controller - Google Patents
Output circuit of industrial controller Download PDFInfo
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- CN210835645U CN210835645U CN201921220082.5U CN201921220082U CN210835645U CN 210835645 U CN210835645 U CN 210835645U CN 201921220082 U CN201921220082 U CN 201921220082U CN 210835645 U CN210835645 U CN 210835645U
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Abstract
The utility model belongs to the technical field of the industrial controller circuit, especially, relate to an industrial controller output circuit, including power supply unit, first output control unit and second output control unit, first output control unit includes high-speed output control circuit and low-speed output control circuit. When the high-speed output control circuit works, the utility model realizes the synchronization that the first MOS tube is also conducted when the microprocessor outputs low level and is opened; when the output of the microprocessor is not open, the first MOS tube is not conducted synchronously, and then the effect of in-phase output of the microprocessor of the industrial controller and the load is realized.
Description
Technical Field
The utility model belongs to the technical field of the industrial controller circuit, especially, relate to an industrial controller output circuit.
Background
The control signals of the industrial controller need to be converted into strong electric signals required by external loads by using an output circuit to drive actuators of controlled equipment such as an electromagnetic valve, a contactor and an indicator light. In the process, the output circuit of the industrial controller does not influence the control function of the industrial controller and can convert weak current into a required strong current signal.
However, the output circuit of the industrial controller configuration on the market at present has certain disadvantages. At present, the high-speed output circuit of the industrial controller generally adopts 6N137 isolation to control the MOS tube, but the output circuit has the problem that the output of a microprocessor of the industrial controller is opposite to the output of a load, and the use is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an industrial controller output circuit aims at solving among the prior art industrial controller because of the unreasonable technical problem who leads to industrial controller's microprocessor's of output and load output are opposite.
In order to achieve the above object, an embodiment of the present invention provides an output circuit of an industrial controller, which is disposed on an output circuit board, and is electrically connected to a microprocessor of the industrial controller and an external load, wherein the output circuit of the industrial controller includes a power supply unit, a first output control unit, and a second output control unit; the power supply unit is electrically connected with the first output control unit, the first output control unit is electrically connected with the microprocessor, the first output control unit is also electrically connected with the second output control unit, and the second output control unit is also electrically connected with the external load;
wherein the first output control unit includes:
the high-speed output control circuit is electrically connected with the power supply unit, the microprocessor and the second output control unit when the industrial controller outputs at a high speed, and the high-speed output control circuit is not used when the industrial controller outputs at a low speed;
and the low-speed output control circuit is electrically connected with the power supply unit, the microprocessor and the second output control unit when the industrial controller outputs at a low speed, and the low-speed output control circuit is not used when the industrial controller outputs at a high speed.
Optionally, the high-speed output control circuit includes a first control chip, a second pin of the first control chip is electrically connected to the power supply unit, a third pin of the first control chip is grounded, a fifth pin of the first control chip is connected to an analog ground, a sixth pin of the first control chip is electrically connected to a first power supply terminal after being connected in series to a first resistor, the sixth pin of the first control chip is further electrically connected to the second output control unit, and a seventh pin and an eighth pin of the first control chip are electrically connected to a second power supply terminal after being connected in series.
Optionally, the low-speed output control circuit includes a second control chip, a first pin of the second control chip is electrically connected to the power supply unit, a second pin of the second control chip is electrically connected to the microprocessor, a third pin of the second control chip is electrically connected to the second output control unit, and a fourth pin of the second control chip is electrically connected to a third power supply terminal.
Optionally, the power supply unit includes a fourth power supply terminal and a second resistor, the second resistor is electrically connected to the fourth power supply terminal, and the second resistor is further electrically connected to the second pin of the first control chip.
Optionally, the second output control unit includes a first MOS transistor, a third resistor, and a first self-recovery fuse; the grid electrode of the first MOS tube is electrically connected with the sixth pin of the first control chip when the industrial controller outputs at a high speed, and the grid electrode of the first MOS tube is electrically connected with the third pin of the second control chip when the industrial controller outputs at a low speed; the third resistor is electrically connected with the grid electrode and the source electrode of the first MOS tube, the source electrode of the first MOS tube is connected with the first self-recovery fuse in series and then is connected with the analog ground, and the drain electrode of the first MOS tube is connected with the external load.
Optionally, the first self-healing fuse is a ceramic CPTC type self-healing fuse.
Optionally, the first MOS transistor is an enhanced N-channel MOS transistor.
Optionally, the first MOS transistor is an enhanced P-channel MOS transistor.
The embodiment of the utility model provides an above-mentioned one or more technical scheme in the industrial controller output circuit have one of following technological effect at least:
1. when the high-speed output control circuit works, the microprocessor outputs a low level signal when outputting, then, the current of the fourth power supply end flows through the second resistor to the microprocessor, at the moment, the first control chip does not have the current to flow through, the voltage provided by the first power supply end provides a conducting voltage for the grid electrode of the first MOS tube after the voltage division of the first resistor and the second resistor, so that the first MOS tube is conducted, the current flowing through the load sequentially passes through the drain electrode of the first MOS tube, the source electrode of the first MOS tube and the first self-recovery fuse and then reaches a simulation ground, and a complete loop is formed to enable the load to work; therefore, when the microprocessor outputs low level to be started, the first MOS tube is also conducted to synchronously output; when the output of the microprocessor is open circuit, the input end of the first control chip is conducted, the output end of the first control chip is conducted, namely the fifth pin and the sixth pin of the first control chip are conducted, the current of the first power supply end sequentially flows through the first resistor, the sixth pin and the fifth pin of the first control chip to the analog ground, the grid voltage of the first MOS tube does not reach the conducting voltage, the first MOS tube is not conducted, the circuit flowing through the external load is open circuit when flowing to the drain electrode of the first MOS tube, and the external load does not work; therefore, the first MOS tube is not conducted when the output of the microprocessor is not open.
2. In addition, when an industrial controller is required to perform high-speed output, the high-speed output control circuit is only required to be mounted on the output circuit board, at the moment, the low-speed output control circuit is not mounted, namely, the low-speed output control circuit is not used and only the high-speed output control circuit works, and the microprocessor sends different electric signals to the high-speed output control circuit to control the high-speed output control circuit to be switched on or switched off and controls the second output control unit so as to control the external load; when the industrial controller is required to output at a low speed, the low-speed output control circuit is only required to be mounted on the output circuit board, and at the moment, the high-speed output control circuit is not mounted, namely the high-speed output control circuit is not used; the utility model discloses paste the dress according to the actual demand high speed output control circuit or low-speed output control circuit can realize that an industrial controller satisfies the demand of high-speed output and low-speed output simultaneously, has reduced manufacturing cost, has still satisfied the customer demand.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a circuit block diagram of an output circuit, an external load and a microprocessor of an industrial controller according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of an output circuit of an industrial controller according to an embodiment of the present invention;
fig. 3 is an equivalent circuit diagram of the output circuit of the industrial controller according to the embodiment of the present invention for high-speed output;
fig. 4 is an equivalent circuit diagram of the output circuit of the industrial controller according to the embodiment of the present invention for low-speed output;
fig. 5 is a circuit diagram of a second output control circuit according to an embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
industrial controller output circuit-100 microprocessor-200
External load-300 power supply unit-400
First output control Unit-500 second output control Unit-600
High speed output control circuit 510 low speed output control circuit 520
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary and intended to explain the embodiments of the present invention and are not to be construed as limiting the present invention.
In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which is only for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.
In one embodiment of the present invention, as shown in fig. 1-2, an output circuit 100 of an industrial controller is provided, which is disposed on an output circuit board (not shown). The industrial controller output circuit 100 is electrically connected to an industrial controller microprocessor 200 and an external load 300. The industrial controller output circuit 100 includes a power supply unit 400, a first output control unit 500, and a second output control unit 600; the power supply unit 400 is electrically connected to the first output control unit 500, the first output control unit 500 is electrically connected to the microprocessor 200, the first output control unit 500 is further electrically connected to the second output control unit 600, and the second output control unit 600 is further electrically connected to the external load 300;
wherein the first output control unit 500 includes:
a high-speed output control circuit 510, wherein the high-speed output control circuit 510 is electrically connected with the power supply unit 400, the microprocessor 200 and the second output control unit 600 when the industrial controller outputs at a high speed, the high-speed output control circuit 510 is not used when the industrial controller outputs at a low speed, that is, when the industrial controller outputs at a high speed, only the electronic components of the high-speed output control circuit 510 are mounted on the output circuit board to enable the high-speed output control circuit 510 to work, and the low-speed output control circuit 520 is not mounted to enable the low-speed output control circuit 520 not to work.
And a low-speed output control circuit 520, wherein the low-speed output control circuit 520 is electrically connected to the power supply unit 400, the microprocessor 200 and the second output control unit 600 when the industrial controller outputs at a low speed, and the low-speed output control circuit 520 is not used when the industrial controller outputs at a high speed. That is, when the industrial controller outputs at a low speed, only the electronic components of the low-speed output control circuit 520 are mounted on the output circuit board to operate the low-speed output control circuit 520, and the high-speed output control circuit 510 is not mounted to operate the high-speed output control circuit 510. The utility model discloses paste dress according to the actual demand high speed output control circuit 510 or low-speed output control circuit 520 can realize that an industrial controller satisfies the demand of high speed output and low-speed output simultaneously, has reduced manufacturing cost, has still satisfied the customer demand.
In another embodiment of the present invention, as shown in fig. 2, the high speed output control circuit 510 includes a first control chip U5, the second pin of the first control chip U5 is electrically connected to the power supply unit 400, the third pin of the first control chip U5 is grounded, the fifth pin of the first control chip U5 is connected to the analog ground, the sixth pin of the first control chip U5 is electrically connected to a first power supply terminal VINN after being connected to a first resistor RY80 in series, the sixth pin of the first control chip U5 is also electrically connected to the second output control unit 600, and the seventh pin and the eighth pin of the second output control unit of the first control chip are electrically connected to a second power supply terminal VDD after being connected in series. In this embodiment, the first control chip U5 is preferably a 6N137, 6N137 optocoupler, which is a single-channel high-speed optocoupler having an internal 850nm AlGaAs LED and an integrated detector consisting of a photodiode, a high-gain linear operational amplifier, and a schottky-clamped open collector triode. When the second pin of the 6N137 is connected to the high level and the third pin is connected to the low level, the input end of the 6N137 is turned on, and the output end of the 6N137 is also turned on, that is, the sixth pin and the fifth pin of the 6N137 are communicated. In this embodiment, the voltage provided by an external power source (not shown) to the first power supply terminal VINN is preferably 24V. An external power source (not shown) supplies a voltage of preferably 5V to the second power supply terminal VDD.
In another embodiment of the present invention, as shown in fig. 2, the low-speed output control circuit 520 includes a second control chip D8, the first pin of the second control chip D8 is electrically connected to the power supply unit 400, the second pin of the second control chip D8 is electrically connected to the microprocessor 200, the third pin of the second control chip D8 is electrically connected to the second output control unit 600, and the fourth pin of the second control chip D8 is electrically connected to a third power supply terminal VDD 2. In this embodiment, the model of the second control chip D8 is preferably an EL 357. When the first pin of EL357 is connected to a high level and the second pin of EL357 is connected to a low level, the input terminal of EL357 is turned on, and at this time, the output terminal of EL357 is also turned on, that is, the third pin and the fourth pin of EL357 are connected. An external power source (not shown) supplies a voltage of preferably 5V to the third power supply terminal VDD 2.
In another embodiment of the present invention, as shown in fig. 3, the power supply unit 400 includes a fourth power supply terminal VSS and a second resistor RY0, the second resistor RY0 is electrically connected to the fourth power supply terminal VSS, and the second resistor RY0 is further electrically connected to a second pin of the first control chip U5. In this embodiment, an external power source (not shown) preferably provides 5V to the fourth power supply terminal VSS.
In another embodiment of the present invention, as shown in fig. 3, the second output control unit 600 includes a first MOS transistor Q1, a third resistor R566 and a first self-healing fuse BX01, the gate of the first MOS transistor Q1 is electrically connected to the sixth pin of the first control chip U5 when the industrial controller outputs at a high speed, and the gate of the first MOS transistor Q1 is electrically connected to the third pin of the second control chip D8 when the industrial controller outputs at a low speed. The third resistor R566 is electrically connected to the gate and source of the first MOS transistor Q1, the source of the first MOS transistor Q1 is serially connected to the first self-healing fuse BX01 and then to analog ground, and the drain of the first MOS transistor Q1 is connected to the external load 300. In this embodiment, the model of the first MOS transistor Q1 is IRLR120 NTR. When the voltage of the gate of the first MOS transistor Q1 reaches its turn-on voltage, the first MOS transistor Q1 turns on.
In another embodiment of the present invention, the first self-healing fuse BX01 is a ceramic CPTC type self-healing fuse. In this embodiment, the ceramic CPTC type self-recovery fuse has the advantages of easy manufacture, relatively low cost, and reduced production cost.
In another embodiment of the present invention, the first MOS transistor Q1 is an enhanced N-channel MOS transistor.
In another embodiment of the present invention, the first MOS transistor Q1 is an enhanced P-channel MOS transistor.
In the present invention, when the industrial controller performs high-speed output, referring to fig. 1 to 5, when the microprocessor 200 outputs and outputs a low level, the external load 300 should operate. Specifically, when the microprocessor 200 outputs a low level, the current of the fourth power supply terminal VSS flows through the second resistor RY0 to the microprocessor 200, and at this time, the first control chip U5 is not turned on, the voltage of the first power supply terminal VINN is divided by the first resistor RY80 and the third resistor R566 and then provides a turn-on voltage to the gate of the first MOS transistor Q1, so that the first MOS transistor Q1 is turned on, and the current flowing through the external load 300 sequentially flows through the drain, gate and source of the first MOS transistor Q1 and then flows through the self-recovery fuse BX01 to the analog ground, so as to form a complete loop, and the external load operates. Therefore, the first MOS transistor Q1 is turned on when the microprocessor 200 has an output and outputs a low level.
Further, when the microprocessor 200 has no output, i.e., the output terminal of the microprocessor 200 is open, the external load 300 should not operate. Specifically, the current of the fourth power supply terminal VSS flows to the second pin and the third pin of the first control chip U5 after passing through the second resistor RY0, at this time, the input terminal of the first control chip U5 is turned on, then the output terminal of the first control chip U5 is turned on, the sixth pin and the fifth pin of the first control chip U5 are communicated, the voltage of the first power supply terminal VINN is discharged to the analog ground after passing through the sixth pin and the fifth pin of the first control chip U5, at this time, the first MOS transistor Q1 is not turned on, and the external load 300 does not operate. Therefore, the non-conduction synchronization of the first MOS transistor Q1 when the microprocessor 200 has no output is realized, and the non-output in the same phase are realized. Particularly, the utility model discloses in work as when the industrial controller is high-speed output, can realize 500 KHZ's output.
In the present invention, when the industrial controller performs low-speed output, referring to fig. 1 to 5, when the output of the microprocessor 200 is a low output potential, the external load 300 should operate. Specifically, after the current of the fourth power supply terminal VSS sequentially passes through the second resistor RY0 and the first pin and the second pin of the second control chip D8, the input terminal of the second control chip D8 is turned on, the output terminal of the second control chip D8 is turned on, that is, the fourth pin and the third pin of the second control chip D8 are turned on, the voltage of the third power supply terminal VDD2 passes through the fourth pin and the third pin of the second control chip D8 to provide a turn-on voltage for the gate of the first MOS transistor Q1, so that the first MOS transistor Q1 is turned on, and the external load 300 operates. Therefore, the synchronization that when the microprocessor 200 has an output and outputs a low level, the first MOS transistor Q1 is also turned on, and the same-phase on output is realized.
Further, when the no output of the microprocessor 300 is open, the external load 300 should not operate. Specifically, when the output of the microprocessor 200 is not open, the input terminal of the second control chip D8 is not turned on, the output terminal of the second control chip D8 is also not turned on, the first MOS transistor Q1 is not turned on, and the external load 300 does not operate. Therefore, the non-conduction synchronization of the first MOS transistor Q1 when the microprocessor 200 has no output is realized, and the non-output in the same phase are realized. Particularly, the utility model discloses in work as when the industrial controller is low-speed output, can realize 10 KHZ's output.
In summary, one aspect of the present invention is to realize the in-phase output of the microprocessor 200 and the load; on the other hand, the high-speed output control circuit 510 or the low-speed output control circuit 520 can be mounted according to actual requirements, so that one industrial controller can meet the requirements of high-speed output and low-speed output at the same time, the production cost is reduced, and the customer requirements are met.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. An industrial controller output circuit is electrically connected with a microprocessor of an industrial controller and an external load, and is characterized by comprising a power supply unit, a first output control unit and a second output control unit; the power supply unit is electrically connected with the first output control unit, the first output control unit is electrically connected with the microprocessor, the first output control unit is also electrically connected with the second output control unit, and the second output control unit is also electrically connected with the external load;
wherein the first output control unit includes:
the high-speed output control circuit is electrically connected with the power supply unit, the high-speed output control circuit and the second output control unit when the industrial controller outputs at a high speed, and the high-speed output control circuit is not used when the industrial controller outputs at a low speed;
and the low-speed output control circuit is electrically connected with the power supply unit, the low-speed output control circuit and the second output control unit when the industrial controller outputs at a low speed, and the low-speed output control circuit is not used when the industrial controller outputs at a high speed.
2. The output circuit of claim 1, wherein the high-speed output control circuit comprises a first control chip, the second pin of the first control chip is connected to the power supply unit, the third pin of the first control chip is connected to ground, the fifth pin of the first control chip is connected to analog ground, the sixth pin of the first control chip is electrically connected to a first power supply terminal after being connected to a first resistor in series, the sixth pin of the first control chip is further electrically connected to the second output control unit, and the seventh pin and the eighth pin of the first control chip are electrically connected to a second power supply terminal after being connected to each other in series.
3. The industrial controller output circuit according to claim 2, wherein the low-speed output control circuit comprises a second control chip, a first pin of the second control chip is electrically connected to the power supply unit, a second pin of the second control chip is electrically connected to the microprocessor, a third pin of the second control chip is electrically connected to the second output control unit, and a fourth pin of the second control chip is electrically connected to a third power supply terminal.
4. The industrial controller output circuit according to any one of claims 2 to 3, wherein the power supply unit comprises a fourth power supply terminal and a second resistor, the second resistor is electrically connected with the fourth power supply terminal, and the second resistor is further electrically connected with a second pin of the first control chip.
5. The industrial controller output circuit according to claim 3, wherein the second output control unit comprises a first MOS transistor, a third resistor and a first self-recovery fuse; the grid electrode of the first MOS tube is electrically connected with the sixth pin of the first control chip when the industrial controller outputs at a high speed, and the grid electrode of the first MOS tube is electrically connected with the third pin of the second control chip when the industrial controller outputs at a low speed; the third resistor is electrically connected with the grid electrode and the source electrode of the first MOS tube, the source electrode of the first MOS tube is connected with the first self-recovery fuse in series and then is connected with the analog ground, and the drain electrode of the first MOS tube is connected with the external load.
6. The industrial controller output circuit of claim 5, wherein the first self-healing fuse is a ceramic CPTC-type self-healing fuse.
7. The industrial controller output circuit of claim 5, wherein the first MOS transistor is an enhancement-mode N-channel MOS transistor.
8. The industrial controller output circuit of claim 5, wherein the first MOS transistor is an enhancement-type P-channel MOS transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921220082.5U CN210835645U (en) | 2019-07-30 | 2019-07-30 | Output circuit of industrial controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921220082.5U CN210835645U (en) | 2019-07-30 | 2019-07-30 | Output circuit of industrial controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210835645U true CN210835645U (en) | 2020-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921220082.5U Active CN210835645U (en) | 2019-07-30 | 2019-07-30 | Output circuit of industrial controller |
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|---|---|
| CN (1) | CN210835645U (en) |
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2019
- 2019-07-30 CN CN201921220082.5U patent/CN210835645U/en active Active
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