CN2255113Y - Power supply protection device of stepping motor driving power supply - Google Patents
Power supply protection device of stepping motor driving power supply Download PDFInfo
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- CN2255113Y CN2255113Y CN 96232795 CN96232795U CN2255113Y CN 2255113 Y CN2255113 Y CN 2255113Y CN 96232795 CN96232795 CN 96232795 CN 96232795 U CN96232795 U CN 96232795U CN 2255113 Y CN2255113 Y CN 2255113Y
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- 238000013021 overheating Methods 0.000 claims abstract description 4
- 230000005622 photoelectricity Effects 0.000 claims description 10
- 239000003990 capacitor Substances 0.000 claims description 6
- 239000003381 stabilizer Substances 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 229910052710 silicon Inorganic materials 0.000 abstract description 2
- 239000010703 silicon Substances 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Abstract
The power supply protection device of the stepping motor driving power supply is used in the stepping motor driving power supply on the numerical control machine tool. According to the requirements that a stepping motor needs lower working voltage to ensure stable operation when running at a low speed, and needs high voltage to ensure high output power when running at a high speed, the technology of rectifier voltage superposition and controlled silicon controlled rectifier conduction is utilized to provide high and low switchable power supply voltage for a driving power supply. Meanwhile, automatic voltage limiting for power supply and automatic protection for overheating are adopted, so that heat loss of elements is reduced, the driving power supply works more stably and reliably, and the characteristics of the economical numerical control machine tool are greatly improved. The utility model is suitable for a reaction formula, the high-power step motor drive power supply of hybrid.
Description
The utility model is the electric supply installation of using for the Digit Control Machine Tool driving source for step motor, and it is applicable to the driving power of reaction equation, hybrid high-power stepper motor.
At present, the many supply power modes that a kind of direct voltage is provided that adopt simply of the electric power system of domestic Digit Control Machine Tool driving source for step motor.As adopt the low dc voltage power supply, and can satisfy the requirement stably of motor low-frequency operation though supply power voltage is low, when the motor high frequency turned round, power output was little, can not drive the supporting plate high-speed cruising; As adopt the High Voltage Power Supply mode; can guarantee driven by motor supporting plate high-speed cruising though supply power voltage is high; but the lathe vibrations are big during the supporting plate low cruise; machining accuracy is low; and long-term work is at high pressure conditions, and during voltage ripple of power network, electric power system does not have pressure limiting, overtemperature protection measure again; this just influences Digit Control Machine Tool complete machine performance, and it can not reliablely and stablely be worked.
The purpose of this utility model is to provide a kind of electric supply installation to driving source for step motor, it can guarantee that the motor low cruise is steady, the high-speed cruising power output is big, and supply power voltage is operated in the safe voltage when voltage ripple of power network always, thereby make Digit Control Machine Tool that good power work environment be arranged.
The purpose of this utility model can reach by following measure:
A kind of power supply protection device of driving source for step motor, it is by bridge rectifier V1, V2, one-way SCR V3, V5, photoelectricity is isolated zero cross fired ghyristor circuit N1, N2, high-speed comparator N3, anti-phase driving gate N5, voltage stabilizing didoe V7, light-emitting diode V10, V15, diode V4, V6, V8, V9, V11～V14, resistance R 1～R19, capacitor C 1～C5 forms, high-speed comparator N3:B wherein, resistance R 11～R15, diode V8, light-emitting diode V10, capacitor C 5 is formed power supply voltage-limiting protection circuit, high-speed comparator N3:A, resistance R 7, R8, R10, R16, R17, diode V11～V13, light-emitting diode V15, capacitor C 4 is formed the high-power components overheating protection circuit, voltage-stabiliser tube V7 as protective circuit reference potential power supply, is characterized in that two bridge rectifier V1 from+voltage that the 12V DC power supply obtains, the V2 series connection, its direct voltage superposition, V2 negative pole of output end ground connection, two bridge rectifier outputs respectively connect an one-way SCR, and two one-way SCR negative electrodes connect the back and make Vcc to the driving source for step motor power supply; The conducting of one-way SCR is isolated zero cross fired ghyristor circuit N1, N2 control by photoelectricity, the 6th pin of N1, N2 connects diode cathode, diode cathode connects the one-way SCR anode, the 4th pin of N1, N2 connects the one-way SCR trigger electrode through resistance, the 1st pin of N1, N2 connects+the 12V power supply, the 2nd pin of N1, N2 connects the output of anti-phase driving gate N5 through resistance, and photoelectricity is isolated the level that the break-make of zero cross fired ghyristor circuit depends on the control signal VH that transmits through diode V14, anti-phase driving gate N5; The in-phase input end of high-speed comparator N3:B connects the centre cap of potentiometer R13, potentiometer is connected in parallel on the two ends of voltage-stabiliser tube V7, the inverting input of N3:B is connected on the tie point of series resistance R11 and R12, series resistance R11, R12 is connected across between supply power voltage Vcc and the ground, resistance R 14, be connected between the output and in-phase input end of N3:B after the diode V8 series connection, resistance R 15, light-emitting diode V10 is the warning device of supply power voltage when transfiniting, the in-phase input end of high-speed comparator N3:A connects the centre cap of potentiometer R10, potentiometer R10 is connected in parallel on the two ends of pressurizer V7, the inverting input of N3:A connects on the tie point of series resistance R16 and R7, resistance R 8 is connected across between the output and in-phase input end of N3:A, diode V13, resistance R 17, light-emitting diode V15 forms the overheated warning device of high-power components.
The drawing of accompanying drawing is described as follows:
Fig. 1 the utility model electrical schematic diagram
The utility model is described in further detail below in conjunction with Fig. 1:
1. the handoff procedure of power supply high voltage, low pressure:
When the motor low cruise, control signal VH level is low, it is through diode V14, reach the 2nd pin of anti-phase driving gate N5, anti-phase back is by the 15 pin output high level of N5, acting on photoelectricity through resistance R 3 isolates on 2 pin of zero cross fired ghyristor circuit N1, make the 4th of N1,6 pin open circuit, one-way SCR V3 just turn-offs when its positive pressure can not be kept current lead-through voluntarily because of triggerless voltage, is at this moment only powered to driving source for step motor through one-way SCR V5 by bridge rectifier V2, operating voltage is lower, and motor operates steadily; When motor needs high-speed cruising, control signal VH level is high, it reaches the 2nd pin of anti-phase driving gate N5 through diode V14, and the 15th pin output low level of anti-phase back N5 acts on photoelectricity through resistance R 3 and isolates on 2 pin of zero cross fired ghyristor circuit N1, make the 4th of N1,6 pin conductings, act on the anode of one-way SCR V3 on behind the two bridge rectifier direct voltage superpositions this moment, and through the 4th of N1, the positive voltage of 6 pin conductings is added in the control of V3 and extremely goes up, and triggers the V3 conducting.The cathode potential of one-way SCR V5 exceeds its anode potential after the V3 conducting, and V5 turn-offs voluntarily, V1, and the direct voltage behind the V2 superposition is powered to driving source for step motor through V3.The supply power voltage height, power output is big, can drive the supporting plate working at high speed.Because of electric supply installation can provide high and low two kinds of different voltages, control the height of VH signal like this, the requirement of the different operating voltage when just satisfying the running of motor high and low frequency.R18, C1 are connected in parallel on the V3 two ends, and R19, C2 are connected in parallel on the V5 two ends.They are that the RC that eliminates false triggering absorbs network, and it is an electronic device that photoelectricity is isolated the zero cross fired ghyristor circuit.
2. the voltage-limiting protection process when supply power voltage surpasses the highest pressure limiting:
When voltage ripple of power network causes output voltage to surpass the highest pressure limiting, this voltage is through R11, the R12 branch road detects the inverting input 6 that is input to N3:B, and be higher than the setting current potential of the specified maximum supply power voltage of N3:B in-phase input end, comparator N3:B action, output is a low level, it arrives the 2nd pin of anti-phase driving gate N5 through diode V9, the 15 pin output high level of anti-phase back N5, affact the 2nd pin that photoelectricity is isolated zero cross fired ghyristor circuit N1 through R3, the 4th, 6 pin of N1 opens circuit, single-phase silicon-controlled V3 ends, and this moment, supply power voltage began to descend.Since R14, the effect of V8 feedback loop, and N3:B has a voltage delay characteristic, so after output voltage will drop to the safe voltage value, through R11, R12 branch road feedback N3:B end of oppisite phase was lower than N3:B in-phase end current potential once more, comparator N3:B overturns once more, and output is a high level, through diode V9, anti-phase driving gate N5 is anti-phase, the 15th pin output low level of N5, this low level acts on the 2nd pin of N1, makes 4 of N1, at this moment 6 pin conductings open the high-pressure section of direct voltage once more.Work repeatedly in this way, supply power voltage is operated in the safe voltage when voltage ripple of power network always.In the pressure limiting process, V10 is luminous, provides output voltage high alarm signal.
3. protective circuit was stopped power supply electric supply installation when high-power components was overheated:
When high-power components was overheated, the voltage increase on the semistor R7 made comparator N3:A inverting input current potential exceed in-phase input end, comparator N3:A action, output low level.Through V11, V12 transmits, and reaches the 1st, 2 pin of anti-phase driving gate N5, and the 15th, the 16 pin output high level of inverter N5 affacts the 2nd pin of N1 through R3, affacts the 2nd pin of N2 through R6, makes N1, and the 4th, 6 pin of N2 opens circuit.One-way SCR V3, therefore V5 ends, and bridge rectifier V1, the direct voltage of V2 are no longer to driving source for step motor power supply, motor stall.The low level of N3:A output is by V13, and through the 4th pin input of N5, anti-phase again output makes V15 luminous through the N513 pin, and overheated alarm signal is provided.Because R8 feeds back to the N3:A output low level at the voltage reference end of homophase input, so make circuit that the temperature lag characteristic be arranged, have only after the high-power components temperature drops to below the safety value, the voltage of N3:A inverting input is lower than the reference voltage of hysteresis, N3:A output is uprised by low once more, recovery is powered to driving source for step motor, and motor recovers to run well.
The utility model has the following advantages compared to existing technology:
1. electric supply installation can provide high and low two kinds of DC voltages, makes stepper motor Low pressure guarantees steadily during low cruise, and high pressure guarantees that power output is big during high-speed cruising.
2. adopt the power supply pressure limited protection circuit, guarantee that driving power is operated in peace always In the full voltage district, adopt the high-power components overheating protection circuit, make inner of power supply Thermal element no longer produces too much heat, guarantees that driving power is operated in safety always In the humidity province, reduce the thermal losses of element and the fault of premature failure.
The BQZ361m driving source for step motor that adopts the utility model and design successfully is applied to Digit Control Machine Tool.Through the test examination of multinomial technical indicator, circuit performance is stable, reliable, has improved the performance of economical NC machine tool greatly.
Claims (1)
1. the power supply protection device of a driving source for step motor, it is by bridge rectifier V1, V2, one-way SCR V3, V5, photoelectricity is isolated zero cross fired ghyristor circuit N1, N2, high-speed comparator N3, anti-phase driving gate N5, voltage stabilizing didoe V7, light-emitting diode V10, V15, diode V4, V6, V8, V9, V11～V14, resistance R 1～R19, capacitor C 1～C5 forms, high-speed comparator N3:B wherein, resistance R 11～R15, diode V8, light-emitting diode V10, capacitor C 5 is formed power supply voltage-limiting protection circuit, high-speed comparator N3:A, resistance R 7, R8, R10, R16, R17, diode V11～V13, light-emitting diode V15, capacitor C 4 is formed the high-power components overheating protection circuit, voltage-stabiliser tube V7 as protective circuit reference potential power supply, is characterized in that two bridge rectifier V1 from+voltage that the 12V DC power supply obtains, the V2 series connection, its direct voltage superposition, V2 negative pole of output end ground connection, two bridge rectifier outputs respectively connect an one-way SCR, and two one-way SCR negative electrodes connect the back and make Vcc to the driving source for step motor power supply; The conducting of one-way SCR is isolated zero cross fired ghyristor circuit N1, N2 control by photoelectricity, the 6th pin of N1, N2 connects diode cathode, diode cathode connects the one-way SCR anode, the 4th pin of N1, N2 connects the one-way SCR trigger electrode through resistance, the 1st pin of N1, N2 connects+the 12V power supply, the 2nd pin of N1, N2 connects the output of anti-phase driving gate N5 through resistance, and photoelectricity is isolated the level that the break-make of zero cross fired ghyristor circuit depends on the control signal VH that transmits through diode V14, anti-phase driving gate N5; The in-phase input end of high-speed comparator N3:B connects the centre cap of potentiometer R13, potentiometer is connected in parallel on the two ends of voltage-stabiliser tube V7, the inverting input of N3:B is connected on the tie point of series resistance R11 and R12, series resistance R11, R12 is connected across between supply power voltage Vcc and the ground, resistance R 14, be connected between the output and in-phase input end of N3:B after the diode V8 series connection, resistance R 15, light-emitting diode V10 is the warning device of supply power voltage when transfiniting, the in-phase input end of high-speed comparator N3:A connects the centre cap of potentiometer R10, potentiometer R10 is connected in parallel on the two ends of pressurizer V7, the inverting input of N3:A connects on the tie point of series resistance R16 and R7, resistance R 8 is connected across between the output and in-phase input end of N3:A, diode V13, resistance R 17, light-emitting diode V15 forms the overheated warning device of high-power components.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96232795 CN2255113Y (en) | 1996-03-09 | 1996-03-09 | Power supply protection device of stepping motor driving power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96232795 CN2255113Y (en) | 1996-03-09 | 1996-03-09 | Power supply protection device of stepping motor driving power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2255113Y true CN2255113Y (en) | 1997-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96232795 Expired - Fee Related CN2255113Y (en) | 1996-03-09 | 1996-03-09 | Power supply protection device of stepping motor driving power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2255113Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104917403A (en) * | 2015-05-25 | 2015-09-16 | 张家港市华为电子有限公司 | Automatic switching circuit in power supply applicable to 220V and 110V power grids |
-
1996
- 1996-03-09 CN CN 96232795 patent/CN2255113Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104917403A (en) * | 2015-05-25 | 2015-09-16 | 张家港市华为电子有限公司 | Automatic switching circuit in power supply applicable to 220V and 110V power grids |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 1997.05.28 |