CN207867006U - AC servo driver controls the circuit of power supply power-fail detection - Google Patents
AC servo driver controls the circuit of power supply power-fail detection Download PDFInfo
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- CN207867006U CN207867006U CN201820167969.1U CN201820167969U CN207867006U CN 207867006 U CN207867006 U CN 207867006U CN 201820167969 U CN201820167969 U CN 201820167969U CN 207867006 U CN207867006 U CN 207867006U
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Abstract
The utility model is related to a kind of circuits of AC servo driver control power supply power-fail detection, and the circuit includes first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, photoelectrical coupler, the first triode, the second triode, signal output end, single phase poaer supply ,+5V power supplys and+3.3V power supplys.Compared with prior art, the advantages that the utility model has circuit simple and reliable, and scheme is simple, and it is convenient to realize, cost is economic.
Description
Technical field
The utility model is related to single-phase detection of power loss fields, fall more particularly, to a kind of AC servo driver control power supply
The circuit of electro-detection.
Background technology
In the servo-driver kinetic control system of three-phase alternating current, existing product is in normal meeting pair in powering on operation process
Three kinds of states of three phase mains access carry out hardware detection (phase shortage, power down, normal), and there is presently no for control power supply power-fail
The circuit being detected.If controlled, electrical power contacts are bad to cause phase shortage power down, driver that can shut down, and causes client to production
The quality of product produces query, but some situations are not design and quality problems, but practical operation personnel's wiring carelessness institute
It causes, this is for design and maintenance personal and solves the problems, such as to cause prodigious puzzlement to field maintenance person.
By retrieval, China Patent Publication No. is that CN206321756U discloses a kind of power-fail detection circuit and Switching Power Supply
Circuit is connect with alternating current test side and for the output Enable Pin with the pwm chip in switching power circuit
Detect signal output end；The power-fail detection circuit includes alternating current sampling unit, PNP type triode and first resistor；It is described
Alternating current test side is connect by the alternating current sampling unit with the base stage of the PNP type triode, the PNP type triode
Emitter connect with DC power supply connecting pin, the collector of the PNP type triode is grounded by the first resistor；It is described
The collector of PNP type triode is connect with the detection signal output end.In power down, power-fail detection circuit output detection signal
So that pwm chip is stopped output, and then stopped the voltage output of switching power circuit, realizes quick power down protection.This reality
A kind of switching power circuit is also protected with novel, by increasing power down inspection on the pwm chip periphery of switching power circuit
Slowdown monitoring circuit realizes quick power down, at low cost.But the utility model is directed to or three phase mains accesses to obtain hardware detection, uncomfortable
For being detected to control power supply power-fail.
Utility model content
The purpose of this utility model is exactly to provide a kind of AC servo to overcome the problems of the above-mentioned prior art
The circuit of driver control power supply power-fail detection.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of circuit of AC servo driver control power supply power-fail detection, including first resistor, second resistance, third electricity
Resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, photoelectrical coupler, the first triode, the second triode, signal
Output end, single phase poaer supply ,+5V power supplys and+3.3V power supplys, the ends L of one end connection single phase poaer supply of the first resistor are described
Second resistance one end connection single phase poaer supply N-terminal, the other end of the first resistor is separately connected the one of 3rd resistor
The input side anode at end and photoelectrical coupler, the other end of the second resistance are separately connected the other end and light of 3rd resistor
The input side cathode of electric coupler, one end of the outlet side of the photoelectrical coupler by the 4th resistance connection+5V power supplys, and
The base stage of the second triode is connected by the 5th resistance, the outlet side other end of the photoelectrical coupler is grounded and is separately connected
The emitter of first triode and the second triode ,+5V power supplys are separately connected the first triode by the 6th resistance
The collector of base stage and the second triode, the collector connection signal output end of first triode, and pass through the 7th electricity
Hinder connection+3.3V power supplys.
Preferably, the photoelectrical coupler is Low speed photo coupler.
Preferably, the first resistor is Chip-R.
Preferably, the second resistance is Chip-R.
Preferably, the 3rd resistor is Chip-R.
Preferably, the 4th resistance is Chip-R.
Preferably, the 5th resistance is Chip-R.
Preferably, the 6th resistance is Chip-R.
Preferably, the 7th resistance is Chip-R.
Compared with prior art, the utility model has the following advantages：
1, circuit is simple and reliable, and using common optoelectronic coupler, triode, Chip-R is realized.The circuit structure is abundant
Using the characteristic of photoelectrical coupler and triode, the isolation of strong and weak electricity safety and signal transmission are realized.Since this photoelectrical coupler exists
Working frequency in circuit is very low, about in 100HZ or so, therefore Low speed photo coupler may be used, Low speed photo coupler
Have the advantages that price is low, current transfer ratio is big.So design had not only taken into account the reliability of function but also can guarantee that cost economy is low
It is honest and clean.
2, the ingenious capacitor discharge time using after power down, timely preserves failure logging.The circuit design can be
10ms or so is immediately detected fault-signal, and due to the presence of busbar storage capacitor, the power down time design of Switching Power Supply exists
Ten times of time or more can reliably record fault message, and firmware can keep the scene intact rapidly, and according to actually answering
With preset shutdown procedure is chosen, convenient for solving a problem promptly.
Description of the drawings
Fig. 1 is the hardware detecting circuit principle topological diagram of the utility model.
Specific implementation mode
Below by the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment is a part of the embodiment of the utility model, rather than whole embodiments.Based on the embodiments of the present invention, originally
The every other embodiment that field those of ordinary skill is obtained without making creative work should all belong to this
The range of utility model protection.
As shown in Figure 1, a kind of circuit of AC servo driver control power supply power-fail detection, including：First resistor R1,
Two resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7, photoelectrical coupler U1,
The ends L of one end connection single phase poaer supply of first triode Q1, the second triode Q2, the first resistor R1, described second
The N-terminal of one end connection single phase poaer supply of resistance R2, the other end of the first resistor R1 are separately connected the one of 3rd resistor R3
1 foot of the input side of end and photoelectrical coupler U1, the other end of the second resistance R2 are separately connected the another of 3rd resistor R3
2 feet of the input side of one end and photoelectrical coupler U1,4 feet of the outlet side of the photoelectrical coupler U1 pass through the 4th resistance R4
Connection+5V power supplys, and pass through the poles b of the 5th resistance R5 the second triodes of connection Q2, the outlet side of the photoelectrical coupler U1
3 feet be grounded and connect the poles e of the first triode Q1 and the second triode Q2 ,+5V power supplys pass through the 6th resistance R6 and connect
The poles c of the poles b and the second triode Q2 of the first triode Q1 are connect, the poles c of the first triode Q1 connect CHL, and pass through
7th resistance R7 connection+3.3V power supplys.
When the described circuit power down, capacitance discharges into the Switching Power Supply off-air time and is designed as being more than 150ms.Described
Photoelectrical coupler U1 is Low speed photo coupler.The CTR of the photoelectrical coupler U1 is 200%~400%.
The first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance
R6, the 7th resistance R7 are Chip-R.
The operation principle of the utility model：
(1) when single-phase electricity correctly accesses, output voltage makes photoelectrical coupler U1 output signals be in alternate conduction shutdown
State, CHL obtain DC pulse waveform, and frequency is determined that pulsewidth is determined by the supply voltage inputted by power supply power supply frequency.Work as electricity
When pressure instantaneous value divides to obtain the threshold voltage of photoelectrical coupler U1 primary sides unlatching by first resistor R1, second resistance R2, make
Photoelectrical coupler U1 is obtained reliably to be connected, the Vbe voltages of the second triode Q2 are forced to move low level to and end at this time, and the one or three
The Vbe of pole pipe Q1 is higher than 0.7v (being connected by R6 current limlitings) rapid saturation conduction, and the Vce of the first triode Q1 passes through pull-up the 4th
Resistance R4, CHL export low level signal；Conversely, photoelectrical coupler U1 shutdowns, the second triode Q2 saturation conductions, the one or three pole
Pipe Q1 cut-off, CHL, which is forced to draw high, to be given MCU and monitors in real time.
(2) when single-phase poor electric contact is either broken by stress or supply voltage is consistently less than threshold voltage, photoelectricity
Coupler U1 stops output.The Vbe of second triode Q2 provides suitable biasing pressure difference and enters saturation conduction, and at this time the 1st
The Vbe bias voltages of pole pipe Q1 are almost nil, and the first triode Q1 is turned off rapidly.The signal that CHL is sent to MCU is believed by pulsating direct current
Number become lasting high level.Since the storage capacitor of single-phase rectifier rear end is sufficiently large, capacitance discharges into Switching Power Supply when power down
Off-air time can discharge formula design more than 1s according to capacitance, and a practical pulse cycle time maximum only has
10ms, if the I/O of MCU can be determined that power supply power-fail in two period captures less than rising edge.
Above description is only a specific implementation of the present invention, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art within the technical scope disclosed by the utility model, can readily occur in various
Equivalent modifications or substitutions, these modifications or substitutions should be covered within the scope of the utility model.Therefore, this practicality
Novel protection domain should be subject to the protection scope in claims.
Claims (9)
1. a kind of circuit of AC servo driver control power supply power-fail detection, which is characterized in that including first resistor, the second electricity
Resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, photoelectrical coupler, the first triode, the two or three
One end of pole pipe, signal output end, single phase poaer supply ,+5V power supplys and+3.3V power supplys, the first resistor connects single phase poaer supply
The ends L, the N-terminal of one end connection single phase poaer supply of the second resistance, the other end of the first resistor is separately connected the
One end of three resistance and the input side anode of photoelectrical coupler, the other end of the second resistance are separately connected 3rd resistor
One end of the input side cathode of the other end and photoelectrical coupler, the outlet side of the photoelectrical coupler is connected by the 4th resistance
+ 5V power supplys, and pass through the base stage of the 5th resistance the second triode of connection, the outlet side other end ground connection of the photoelectrical coupler
And it is separately connected the emitter of the first triode and the second triode ,+5V power supplys are separately connected by the 6th resistance
The collector of the base stage of one triode and the second triode, the collector connection signal output end of first triode, and
Pass through the 7th resistance connection+3.3V power supplys.
2. a kind of circuit of AC servo driver control power supply power-fail detection according to claim 1, which is characterized in that
The photoelectrical coupler is Low speed photo coupler.
3. a kind of circuit of AC servo driver control power supply power-fail detection according to claim 1, which is characterized in that
The first resistor is Chip-R.
4. a kind of circuit of AC servo driver control power supply power-fail detection according to claim 1, which is characterized in that
The second resistance is Chip-R.
5. a kind of circuit of AC servo driver control power supply power-fail detection according to claim 1, which is characterized in that
The 3rd resistor is Chip-R.
6. a kind of circuit of AC servo driver control power supply power-fail detection according to claim 1, which is characterized in that
4th resistance is Chip-R.
7. a kind of circuit of AC servo driver control power supply power-fail detection according to claim 1, which is characterized in that
5th resistance is Chip-R.
8. a kind of circuit of AC servo driver control power supply power-fail detection according to claim 1, which is characterized in that
6th resistance is Chip-R.
9. a kind of circuit of AC servo driver control power supply power-fail detection according to claim 1, which is characterized in that
7th resistance is Chip-R.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820167969.1U CN207867006U (en) | 2018-01-31 | 2018-01-31 | AC servo driver controls the circuit of power supply power-fail detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820167969.1U CN207867006U (en) | 2018-01-31 | 2018-01-31 | AC servo driver controls the circuit of power supply power-fail detection |
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| Publication Number | Publication Date |
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| CN207867006U true CN207867006U (en) | 2018-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820167969.1U Active CN207867006U (en) | 2018-01-31 | 2018-01-31 | AC servo driver controls the circuit of power supply power-fail detection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110095737A (en) * | 2018-01-31 | 2019-08-06 | 上海安浦鸣志自动化设备有限公司 | A kind of circuit and method of AC servo driver control power supply power-fail detection |
-
2018
- 2018-01-31 CN CN201820167969.1U patent/CN207867006U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110095737A (en) * | 2018-01-31 | 2019-08-06 | 上海安浦鸣志自动化设备有限公司 | A kind of circuit and method of AC servo driver control power supply power-fail detection |
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