CN209979808U - Drive plate electrification detection circuit for servo driver - Google Patents

Abstract

The utility model discloses a drive plate electrification detection circuit for a servo driver, which comprises a first electrification detection sub circuit integrated on a drive expansion plate, a second electrification detection sub circuit integrated on a U-phase drive plate, a third electrification detection sub circuit integrated on a V-phase drive plate, a fourth electrification detection sub circuit integrated on a W-phase drive plate and a fifth electrification detection sub circuit integrated on a brake drive plate, wherein the second electrification detection sub circuit feeds back an electrification detection signal of the U-phase drive plate, the third electrification detection sub circuit feeds back an electrification detection signal of the V-phase drive plate, the fourth electrification detection sub circuit feeds back an electrification detection signal of the W-phase drive plate and the fifth electrification detection sub circuit feeds back an electrification detection signal of the brake drive plate to the first electrification detection sub circuit, and the first electrification detection sub circuit outputs a detection result to a control plate after receiving four electrification detection signals, if the cable for connection is abnormal, the control board sends out an alarm signal.

Description

Drive plate electrification detection circuit for servo driver

Technical Field

The utility model relates to a servo driver especially relates to a power detection circuitry on drive plate for servo driver.

Background

In the industrial field, the capacity of motors configured for large-scale equipment is generally large. The servo driver for driving the high-power motor must adopt a high-power IGBT module, as shown in fig. 1, the servo driver for driving the high-power motor generally includes a control board 11, a driving expansion board 12, four independent drive boards and four high-power IGBT modules 13 corresponding to the drive boards one by one, the four independent drive boards are a U-phase drive board 14, a V-phase drive board 15, a W-phase drive board 16 and a braking drive board 17, the control board 11 is connected with the driving expansion board 12, the driving expansion board 12 is connected with the four independent drive boards through cables 18, and each drive board is connected with the corresponding high-power IGBT module 13. When the servo driver is operated, the drive expansion board 12 supplies a U-phase upper bridge signal (U +), a U-phase lower bridge signal (U-), +24V supply signal, +15V supply signal, -15V supply signal to the U-phase drive board 14 through the cable 18, the drive expansion board 12 supplies a V-phase upper bridge signal (V +), a V-phase lower bridge signal (V-), +24V supply signal, +15V supply signal, -15V supply signal to the V-phase drive board 15 through the cable 18, the drive expansion board 12 supplies a W-phase upper bridge signal (W +), a W-phase lower bridge signal (W-), +24V supply signal, +15V supply signal, -15V supply signal to the W-phase drive board 16 through the cable 18, and the drive expansion board 12 supplies a brake signal (BR-), +24V supply signal, +15V supply signal through the cable 18, The power supply signal of-15V is provided for the brake driving plate 17, however, the servo driver may have a problem that the connection of the cable 18 connecting the drive expansion plate 12 and the driving plate is not reliable, so that the corresponding driving plate cannot be normally powered, and finally the servo driver cannot normally operate. Therefore, it is necessary to study a technique for detecting the power-on state of the drive board, in order to determine whether or not the cable 18 connecting the drive expansion board 12 and the drive board is reliably connected.

Disclosure of Invention

The utility model aims to solve the technical problem that a power-on detection circuit is provided to drive plate for servo driver, its power-on state that can short-term test out U looks drive plate, V looks drive plate, W looks drive plate and brake drive plate.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a drive plate power-on detection circuit for a servo driver is characterized in that: the detection circuit comprises a first power-on detection sub-circuit integrated on a drive expansion board of a servo driver, a second power-on detection sub-circuit integrated on a U-phase drive board of the servo driver, a third power-on detection sub-circuit integrated on a V-phase drive board of the servo driver, a fourth power-on detection sub-circuit integrated on a W-phase drive board of the servo driver and a fifth power-on detection sub-circuit integrated on a brake drive board of the servo driver, wherein the first power-on detection sub-circuit is respectively connected with a U-phase wiring port, a V-phase wiring port, a W-phase wiring port, a brake signal wiring port and an IGBT signal wiring port connected with a control board of the servo driver on the drive expansion board, the second power-on detection sub-circuit is connected with the U-phase wiring port of the U-phase drive board, and the third power-on detection sub-circuit is connected with the V-phase wiring port of the V-phase drive board, the fourth power-on detection sub-circuit is connected with a W-phase wiring port of the W-phase drive plate, and the fifth power-on detection sub-circuit is connected with a brake signal wiring port of the brake drive plate; after the U-phase drive plate is electrified, the second electrifying detection sub-circuit feeds back electrifying detection signals to the first electrifying detection sub-circuit, after the V-phase drive plate is electrified, the third electrifying detection sub-circuit feeds back electrifying detection signals to the first electrifying detection sub-circuit, after the W-phase drive plate is electrified, the fourth electrifying detection sub-circuit feeds back electrifying detection signals to the first electrifying detection sub-circuit, after the brake drive plate is electrified, the fifth electrifying detection sub-circuit feeds back electrifying detection signals to the first electrifying detection sub-circuit, and after the first electrifying detection sub-circuit receives four electrifying detection signals, the first electrifying detection sub-circuit outputs detection results to the control plate.

The first power-on detection electronic circuit consists of a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor and an AND gate, wherein one end of the first resistor is connected with one end of the second resistor, a common connecting end of the first resistor is connected with a U-phase wiring port on the driving expansion board, the other end of the first resistor is connected with one end of the first capacitor, a common connecting end of the first resistor is connected with the 1 st input end of the AND gate, the other end of the second resistor is connected with the other end of the first capacitor, a common connecting end of the second resistor is grounded, one end of the third resistor is connected with one end of the fourth resistor, and a common connecting end of the third resistor is connected with a V-phase wiring port on the driving expansion board, the other end of the third resistor is connected with one end of the second capacitor, the common connection end of the third resistor is connected with the 2 nd input end of the AND gate, the other end of the fourth resistor is connected with the other end of the second capacitor, the common connection end of the fourth resistor is grounded, one end of the fifth resistor is connected with one end of the sixth resistor, the common connection end of the fifth resistor is connected with the W-phase wiring port on the driving expansion board, the other end of the fifth resistor is connected with one end of the third capacitor, the common connection end of the fifth resistor is connected with the 3 rd input end of the AND gate, the other end of the sixth resistor is connected with the other end of the third capacitor, the common connection end of the sixth resistor is grounded, one end of the seventh resistor is connected with one end of the eighth resistor, and the common connection end of the seventh resistor is connected with the braking signal wiring port on the driving expansion board, the other end of the seventh resistor is connected with one end of the fourth capacitor, the public connecting end of the seventh resistor is connected with the 4 th input end of the AND gate, the other end of the eighth resistor is connected with the other end of the fourth capacitor, the public connecting end of the eighth resistor is grounded, the output end of the AND gate is connected with an IGBT signal wiring port on the driving expansion board, and the driving expansion board provides +15V voltage for the AND gate.

The second power-on detection electronic circuit, the third power-on detection electronic circuit, the fourth power-on detection electronic circuit and the fifth power-on detection electronic circuit have the same circuit structure, and are composed of a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, an eighteenth resistor, a nineteenth resistor, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a PNP triode, a first zener diode, a second zener diode, a first three-terminal adjustable reference source with the model of TL431, a second three-terminal adjustable reference source with the model of TL431, and an isolation optocoupler with the model of HCNW3120, wherein one end of the ninth resistor is a first terminal, and the other end of the ninth resistor is respectively connected with one end of the tenth resistor, one end of the twelfth resistor, and a base of the PNP triode, the other end of the tenth resistor is respectively connected with one end of the eleventh resistor and one end of the fifth capacitor, the other end of the eleventh resistor is connected with the 1 st pin of the first three-terminal adjustable reference source, the 2 nd pin of the first three-terminal adjustable reference source is respectively connected with one end of the sixth capacitor and one end of the thirteenth resistor, the common connection end of the eleventh resistor is a second terminal, the 3 rd pin of the first three-terminal adjustable reference source is respectively connected with the other end of the sixth capacitor, the other end of the thirteenth resistor and one end of the fourteenth resistor, the other end of the fourteenth resistor is grounded, the other end of the fifth capacitor is respectively connected with the cathode of the first voltage stabilizing diode and one end of the seventh capacitor, and the common connection end of the fifth capacitor is a third terminal, the other end of the seventh capacitor is grounded, the other end of the twelfth resistor is respectively connected with the anode of the first voltage-stabilizing diode and the emitting electrode of the PNP triode, the collector of the PNP triode is connected with one end of the fifteenth resistor, the other end of the fifteenth resistor is respectively connected with one end of the eighteenth resistor and the 2 nd pin of the isolation optocoupler, the other end of the eighteenth resistor is respectively connected with the 1 st pin, the 3 rd pin and the 4 th pin of the isolation optocoupler and the 1 st pin of the second three-terminal adjustable reference source, the 3 rd pin of the second three-terminal adjustable reference source is respectively connected with one end of the eighth capacitor, one end of the sixteenth resistor and one end of the seventeenth resistor, the other end of the sixteenth resistor is a fourth terminal, and the other end of the seventeenth resistor is connected with the other end of the eighth capacitor, the common connection end of the isolation optocoupler is grounded, the 2 nd pin of the second three-end adjustable reference source is grounded, the 5 th pin of the isolation optocoupler is a fifth terminal, the 5 th pin of the isolation optocoupler is connected with the 8 th pin of the isolation optocoupler through the ninth capacitor, the 8 th pin of the isolation optocoupler is a sixth terminal, the 6 th pin of the isolation optocoupler is idle, the 7 th pin of the isolation optocoupler is connected with the anode of the second voltage stabilizing diode through the nineteenth resistor, and the cathode of the second voltage stabilizing diode is a seventh terminal;

a first terminal, a third terminal, a fourth terminal and a sixth terminal of the second power-on detection sub-circuit are all connected to +15V voltage provided by the U-phase driving board, a second terminal and a fifth terminal of the second power-on detection sub-circuit are all connected to-15V voltage provided by the U-phase driving board, and a seventh terminal of the second power-on detection sub-circuit is connected with a U-phase interface on the U-phase driving board; a first terminal, a third terminal, a fourth terminal and a sixth terminal of the third power-on detection sub-circuit are all connected to +15V voltage provided by the V-phase driving board, a second terminal and a fifth terminal of the third power-on detection sub-circuit are all connected to-15V voltage provided by the V-phase driving board, and a seventh terminal of the third power-on detection sub-circuit is connected with a V-phase port on the V-phase driving board; a first terminal, a third terminal, a fourth terminal and a sixth terminal of the fourth power-on detection sub-circuit are all connected to +15V voltage provided by the W-phase driving board, a second terminal and a fifth terminal of the fourth power-on detection sub-circuit are all connected to-15V voltage provided by the W-phase driving board, and a seventh terminal of the fourth power-on detection sub-circuit is connected with a W-phase port on the W-phase driving board; the first terminal, the third terminal, the fourth terminal and the sixth terminal of the fifth power-on detection sub-circuit are all connected to +15V voltage provided by the brake drive plate, the second terminal and the fifth terminal of the fifth power-on detection sub-circuit are all connected to-15V voltage provided by the brake drive plate, and the seventh terminal of the fifth power-on detection sub-circuit is connected with a brake signal wiring port on the brake drive plate.

Compared with the prior art, the utility model has the advantages of: integrating a first power-on detection sub-circuit on a drive expansion board, integrating a second power-on detection sub-circuit on a U-phase drive board, integrating a third power-on detection sub-circuit on a V-phase drive board, integrating a fourth power-on detection sub-circuit on a W-phase drive board, integrating a fifth power-on detection sub-circuit on a brake drive board, feeding back a power-on detection signal of the U-phase drive board to the first power-on detection sub-circuit during operation by the second power-on detection sub-circuit, feeding back a power-on detection signal of the V-phase drive board to the first power-on detection sub-circuit by the third power-on detection sub-circuit, feeding back a power-on detection signal of the W-phase drive board to the first power-on detection sub-circuit by the fourth power-on detection sub-circuit, feeding back a power-on detection signal of the brake to the first power-on detection sub-circuit by the fifth power-, if the cable for connection is abnormal, the control board sends out an alarm signal, so that if the applied servo driver sends out the alarm signal, a user can directly judge that the connection of the cable for connecting the drive expansion board and the drive board is not reliable.

Drawings

FIG. 1 is a schematic diagram of the electrical components of a conventional servo driver;

fig. 2 is a schematic diagram showing the components of the electrical part of the servo driver using the power-on detection circuit of the driving board of the present invention;

fig. 3 is a circuit diagram of a first power-on detection electronic circuit in the power-on detection circuit of the driving board of the present invention;

fig. 4 is a circuit diagram of a second power-on detection electronic circuit in the power-on detection circuit of the driving board of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

The first embodiment is as follows:

as shown in fig. 2, the drive board power-on detection circuit for a servo driver in this embodiment includes a first power-on detection sub-circuit 31 integrated on a drive expansion board 21 of the servo driver, a second power-on detection sub-circuit 32 integrated on a U-phase drive board 22 of the servo driver, a third power-on detection sub-circuit 33 integrated on a V-phase drive board 23 of the servo driver, a fourth power-on detection sub-circuit 34 integrated on a W-phase drive board 24 of the servo driver, and a fifth power-on detection sub-circuit 35 integrated on a brake drive board 25 of the servo driver, where the first power-on detection sub-circuit 31 is respectively connected to a U-phase port ULT1, a V-phase port VLT1, a W-phase port WLT1, a brake signal brt 1, and an IGBT signal port IGBTLT 38lt for connecting to a control board 26 of the servo driver, the second power-on detection sub-circuit 32 is connected to a U-phase port ULT2 of the U-phase drive board 22, the third power-on detection sub-circuit 33 is connected with a V-phase wiring port VLT2 of the V-phase drive plate 23, the fourth power-on detection sub-circuit 34 is connected with a W-phase wiring port WLT2 of the W-phase drive plate 24, and the fifth power-on detection sub-circuit 35 is connected with a brake signal wiring port BRLT2 of the brake drive plate 25; after the U-phase drive board 22 is powered on, the second power-on detection sub-circuit 32 feeds back a power-on detection signal U _ LT to the first power-on detection sub-circuit 31, after the V-phase drive board 23 is powered on, the third power-on detection sub-circuit 33 feeds back a power-on detection signal V _ LT to the first power-on detection sub-circuit 31, after the W-phase drive board 24 is powered on, the fourth power-on detection sub-circuit 34 feeds back a power-on detection signal W _ LT to the first power-on detection sub-circuit 31, after the brake drive board 25 is powered on, the fifth power-on detection sub-circuit 35 feeds back a power-on detection signal BR _ LT to the first power-on detection sub-circuit 31, after the first power-on detection sub-circuit 31 receives the four power-on detection signals U _ LT, V _ LT, W _ LT, and BR _ LT, the detection result is output to the control board 26, and if a cable connecting the drive expansion board 21 with the U-phase drive board 22 or a cable connecting the drive expansion 25, the control board 26 outputs an alarm signal.

Example two:

in the present embodiment, a circuit structure of the first power-on detection sub-circuit 31 is defined on the basis of the power-on detection circuit of the driving board in the first embodiment, as shown in fig. 3, the first power-on detection sub-circuit 31 is composed of a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, and an and gate YM, one end of the first resistor R1 is connected to one end of the second resistor R2, and a common connection end thereof is connected to the U-phase connection port ULT1 on the driving expansion board 21, another end of the first resistor R1 is connected to one end of the first capacitor C1, and a common connection end thereof is connected to the first and gate terminal of YM 1, and the other end of the second resistor R2 is connected to the first and the second capacitor R1, and a common connection terminal thereof is grounded, one end of a third resistor R3 is connected to one end of a fourth resistor R4, and a common connection terminal thereof is connected to the V-phase port VLT1 on the drive expansion board 21, the other end of a third resistor R3 is connected to one end of a second capacitor C2, and a common connection terminal thereof is connected to the 2 nd input terminal of the and gate YM, the other end of a fourth resistor R4 is connected to the other end of the second capacitor C2, and a common connection terminal thereof is grounded, one end of a fifth resistor R5 is connected to one end of a sixth resistor R6, and a common connection terminal thereof is connected to the W-phase port WLT1 on the drive expansion board 21, the other end of a fifth resistor R5 is connected to one end of a third capacitor C3, and a common connection terminal thereof is connected to the 3 rd input terminal of the and gate YM, the other end of a sixth resistor R6 is connected to the other end of a third capacitor C3, and a common connection terminal thereof is grounded, and one end of a seventh resistor R7 is connected to one end of an, and the common connection end is connected with a brake signal wiring port BRLT1 on the drive expansion board 21, the other end of the seventh resistor R7 is connected with one end of a fourth capacitor C4, the common connection end is connected with the 4 th input end of an AND gate YM, the other end of the eighth resistor R8 is connected with the other end of the fourth capacitor C4, the common connection end is grounded, the output end of the AND gate YM is connected with an IGBT signal wiring port IGBTLT on the drive expansion board 21, and the drive expansion board 21 provides +15V voltage for the AND gate YM.

Example three:

in the drive board power-on detection circuit for a servo driver proposed in this embodiment, based on the drive board power-on detection circuit in the first or second embodiment, the circuit structures of the second power-on detection sub-circuit 32, the third power-on detection sub-circuit 33, the fourth power-on detection sub-circuit 34 and the fifth power-on detection sub-circuit 35 are defined, and since the circuit structures of the second power-on detection sub-circuit 32, the third power-on detection sub-circuit 33, the fourth power-on detection sub-circuit 34 and the fifth power-on detection sub-circuit 35 are the same, the circuit diagram of the second power-on detection sub-circuit 32 is only shown, as shown in fig. 4, and the circuit diagram is composed of a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15, a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18, a nineteenth resistor R19, a nineteenth resistor R36, A fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, a PNP transistor Q1, a first zener diode ZD1, a second zener diode ZD2, a first three-terminal adjustable reference source IC1 with model TL431, a second three-terminal adjustable reference source IC2 with model TL431, and an isolation optocoupler P1 with model HCNW3120, one end of the ninth resistor R9 is a first terminal, the other end of the ninth resistor R9 is respectively connected to one end of a tenth resistor R10, one end of a twelfth resistor R12, and a base of the PNP transistor Q1, the other end of the tenth resistor R10 is respectively connected to one end of an eleventh resistor R11 and one end of a fifth capacitor C5, the other end of the eleventh resistor R11 is connected to the 1-terminal of the first adjustable reference source IC1, the third terminal of the first adjustable reference source IC1 is respectively connected to the thirteenth terminal of the sixth capacitor C6353 and the common terminal 6, the 3 rd pin of the first three-terminal adjustable reference source IC1 is respectively connected with the other end of a sixth capacitor C6, the other end of a thirteenth resistor R13 and one end of a fourteenth resistor R14, the other end of the fourteenth resistor R14 is grounded, the other end of a fifth capacitor C5 is respectively connected with the cathode of a first voltage-stabilizing diode ZD1 and one end of a seventh capacitor C7, the common connection end of the fifth capacitor C14 is a third terminal, the other end of the seventh capacitor C7 is grounded, the other end of a twelfth resistor R12 is respectively connected with the anode of the first voltage-stabilizing diode ZD1 and the emitter of a PNP triode Q1, the collector of the PNP triode Q1 is connected with one end of a fifteenth resistor R15, the other end of the fifteenth resistor R15 is respectively connected with one end of an eighteenth resistor R8 and the 2 nd pin of an isolation P1, the other end of the eighteenth resistor R18 is respectively connected with the 1 st pin, the 3 rd pin and the 4 th pin of the isolation P1 and the third pin of the second three-terminal adjustable reference, a 3 rd pin of the second three-terminal adjustable reference source IC2 is connected to one end of an eighth capacitor C8, one end of a sixteenth resistor R16 and one end of a seventeenth resistor R17, the other end of the sixteenth resistor R16 is a fourth terminal, the other end of the seventeenth resistor R17 is connected to the other end of the eighth capacitor C8, a common connection end of the seventeenth resistor R8 is grounded, a 2 nd pin of the second three-terminal adjustable reference source IC2 is grounded, a 5 th pin of the isolation optocoupler P1 is a fifth terminal, a 5 th pin of the isolation optocoupler P1 is connected to an 8 th pin of the isolation optocoupler P1 through a ninth capacitor C9, an 8 th pin of the isolation optocoupler P1 is a sixth terminal, a 6 th pin of the isolation optocoupler P1 is idle, a 7 th pin of the isolation optocoupler P1 is connected to an anode of the second zener diode ZD2 through a nineteenth resistor R19, and a cathode of the second zener diode ZD2 is a seventh terminal.

In this embodiment, the first terminal, the third terminal, the fourth terminal and the sixth terminal of the second power-on detection sub-circuit 32 are all connected to +15V voltage provided by the U-phase driving board 22, the second terminal and the fifth terminal of the second power-on detection sub-circuit 32 are all connected to-15V voltage provided by the U-phase driving board 22, and the seventh terminal of the second power-on detection sub-circuit 32 is connected to a U-phase port ULT2 on the U-phase driving board 22; the first terminal, the third terminal, the fourth terminal and the sixth terminal of the third power-on detection sub-circuit 33 are all connected to +15V voltage provided by the V-phase driving board 23, the second terminal and the fifth terminal of the third power-on detection sub-circuit 33 are all connected to-15V voltage provided by the V-phase driving board 23, and the seventh terminal of the third power-on detection sub-circuit 33 is connected to a V-phase interface VLT2 on the V-phase driving board 23; a first terminal, a third terminal, a fourth terminal and a sixth terminal of the fourth power-on detection sub-circuit 34 are all connected to +15V voltage provided by the W-phase driving board 24, a second terminal and a fifth terminal of the fourth power-on detection sub-circuit 34 are all connected to-15V voltage provided by the W-phase driving board 24, and a seventh terminal of the fourth power-on detection sub-circuit 34 is connected to a W-phase port WLT2 on the W-phase driving board 24; the first terminal, the third terminal, the fourth terminal and the sixth terminal of the fifth power-on detection sub-circuit 35 are all connected to +15V voltage provided by the brake driving plate 25, the second terminal and the fifth terminal of the fifth power-on detection sub-circuit 35 are all connected to-15V voltage provided by the brake driving plate 25, and the seventh terminal of the fifth power-on detection sub-circuit 35 is connected to a brake signal wiring port BRLT2 on the brake driving plate 25.

Claims (3)

1. A drive plate power-on detection circuit for a servo driver is characterized in that: the detection circuit comprises a first power-on detection sub-circuit integrated on a drive expansion board of a servo driver, a second power-on detection sub-circuit integrated on a U-phase drive board of the servo driver, a third power-on detection sub-circuit integrated on a V-phase drive board of the servo driver, a fourth power-on detection sub-circuit integrated on a W-phase drive board of the servo driver and a fifth power-on detection sub-circuit integrated on a brake drive board of the servo driver, wherein the first power-on detection sub-circuit is respectively connected with a U-phase wiring port, a V-phase wiring port, a W-phase wiring port, a brake signal wiring port and an IGBT signal wiring port connected with a control board of the servo driver on the drive expansion board, the second power-on detection sub-circuit is connected with the U-phase wiring port of the U-phase drive board, and the third power-on detection sub-circuit is connected with the V-phase wiring port of the V-phase drive board, the fourth power-on detection sub-circuit is connected with a W-phase wiring port of the W-phase drive plate, and the fifth power-on detection sub-circuit is connected with a brake signal wiring port of the brake drive plate; after the U-phase drive plate is electrified, the second electrifying detection sub-circuit feeds back electrifying detection signals to the first electrifying detection sub-circuit, after the V-phase drive plate is electrified, the third electrifying detection sub-circuit feeds back electrifying detection signals to the first electrifying detection sub-circuit, after the W-phase drive plate is electrified, the fourth electrifying detection sub-circuit feeds back electrifying detection signals to the first electrifying detection sub-circuit, after the brake drive plate is electrified, the fifth electrifying detection sub-circuit feeds back electrifying detection signals to the first electrifying detection sub-circuit, and after the first electrifying detection sub-circuit receives four electrifying detection signals, the first electrifying detection sub-circuit outputs detection results to the control plate.

2. A drive plate power-on detection circuit for a servo driver as claimed in claim 1, wherein: the first power-on detection electronic circuit consists of a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor and an AND gate, wherein one end of the first resistor is connected with one end of the second resistor, a common connecting end of the first resistor is connected with a U-phase wiring port on the driving expansion board, the other end of the first resistor is connected with one end of the first capacitor, a common connecting end of the first resistor is connected with the 1 st input end of the AND gate, the other end of the second resistor is connected with the other end of the first capacitor, a common connecting end of the second resistor is grounded, one end of the third resistor is connected with one end of the fourth resistor, and a common connecting end of the third resistor is connected with a V-phase wiring port on the driving expansion board, the other end of the third resistor is connected with one end of the second capacitor, the common connection end of the third resistor is connected with the 2 nd input end of the AND gate, the other end of the fourth resistor is connected with the other end of the second capacitor, the common connection end of the fourth resistor is grounded, one end of the fifth resistor is connected with one end of the sixth resistor, the common connection end of the fifth resistor is connected with the W-phase wiring port on the driving expansion board, the other end of the fifth resistor is connected with one end of the third capacitor, the common connection end of the fifth resistor is connected with the 3 rd input end of the AND gate, the other end of the sixth resistor is connected with the other end of the third capacitor, the common connection end of the sixth resistor is grounded, one end of the seventh resistor is connected with one end of the eighth resistor, and the common connection end of the seventh resistor is connected with the braking signal wiring port on the driving expansion board, the other end of the seventh resistor is connected with one end of the fourth capacitor, the public connecting end of the seventh resistor is connected with the 4 th input end of the AND gate, the other end of the eighth resistor is connected with the other end of the fourth capacitor, the public connecting end of the eighth resistor is grounded, the output end of the AND gate is connected with an IGBT signal wiring port on the driving expansion board, and the driving expansion board provides +15V voltage for the AND gate.

3. A drive board power-on detection circuit for a servo driver according to claim 1 or 2, characterized in that: the second power-on detection electronic circuit, the third power-on detection electronic circuit, the fourth power-on detection electronic circuit and the fifth power-on detection electronic circuit have the same circuit structure, and are composed of a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, an eighteenth resistor, a nineteenth resistor, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a PNP triode, a first zener diode, a second zener diode, a first three-terminal adjustable reference source with the model of TL431, a second three-terminal adjustable reference source with the model of TL431, and an isolation optocoupler with the model of HCNW3120, wherein one end of the ninth resistor is a first terminal, and the other end of the ninth resistor is respectively connected with one end of the tenth resistor, one end of the twelfth resistor, and a base of the PNP triode, the other end of the tenth resistor is respectively connected with one end of the eleventh resistor and one end of the fifth capacitor, the other end of the eleventh resistor is connected with the 1 st pin of the first three-terminal adjustable reference source, the 2 nd pin of the first three-terminal adjustable reference source is respectively connected with one end of the sixth capacitor and one end of the thirteenth resistor, the common connection end of the eleventh resistor is a second terminal, the 3 rd pin of the first three-terminal adjustable reference source is respectively connected with the other end of the sixth capacitor, the other end of the thirteenth resistor and one end of the fourteenth resistor, the other end of the fourteenth resistor is grounded, the other end of the fifth capacitor is respectively connected with the cathode of the first voltage stabilizing diode and one end of the seventh capacitor, and the common connection end of the fifth capacitor is a third terminal, the other end of the seventh capacitor is grounded, the other end of the twelfth resistor is respectively connected with the anode of the first voltage-stabilizing diode and the emitting electrode of the PNP triode, the collector of the PNP triode is connected with one end of the fifteenth resistor, the other end of the fifteenth resistor is respectively connected with one end of the eighteenth resistor and the 2 nd pin of the isolation optocoupler, the other end of the eighteenth resistor is respectively connected with the 1 st pin, the 3 rd pin and the 4 th pin of the isolation optocoupler and the 1 st pin of the second three-terminal adjustable reference source, the 3 rd pin of the second three-terminal adjustable reference source is respectively connected with one end of the eighth capacitor, one end of the sixteenth resistor and one end of the seventeenth resistor, the other end of the sixteenth resistor is a fourth terminal, and the other end of the seventeenth resistor is connected with the other end of the eighth capacitor, the common connection end of the isolation optocoupler is grounded, the 2 nd pin of the second three-end adjustable reference source is grounded, the 5 th pin of the isolation optocoupler is a fifth terminal, the 5 th pin of the isolation optocoupler is connected with the 8 th pin of the isolation optocoupler through the ninth capacitor, the 8 th pin of the isolation optocoupler is a sixth terminal, the 6 th pin of the isolation optocoupler is idle, the 7 th pin of the isolation optocoupler is connected with the anode of the second voltage stabilizing diode through the nineteenth resistor, and the cathode of the second voltage stabilizing diode is a seventh terminal;

a first terminal, a third terminal, a fourth terminal and a sixth terminal of the second power-on detection sub-circuit are all connected to +15V voltage provided by the U-phase driving board, a second terminal and a fifth terminal of the second power-on detection sub-circuit are all connected to-15V voltage provided by the U-phase driving board, and a seventh terminal of the second power-on detection sub-circuit is connected with a U-phase interface on the U-phase driving board; a first terminal, a third terminal, a fourth terminal and a sixth terminal of the third power-on detection sub-circuit are all connected to +15V voltage provided by the V-phase driving board, a second terminal and a fifth terminal of the third power-on detection sub-circuit are all connected to-15V voltage provided by the V-phase driving board, and a seventh terminal of the third power-on detection sub-circuit is connected with a V-phase port on the V-phase driving board; a first terminal, a third terminal, a fourth terminal and a sixth terminal of the fourth power-on detection sub-circuit are all connected to +15V voltage provided by the W-phase driving board, a second terminal and a fifth terminal of the fourth power-on detection sub-circuit are all connected to-15V voltage provided by the W-phase driving board, and a seventh terminal of the fourth power-on detection sub-circuit is connected with a W-phase port on the W-phase driving board; the first terminal, the third terminal, the fourth terminal and the sixth terminal of the fifth power-on detection sub-circuit are all connected to +15V voltage provided by the brake drive plate, the second terminal and the fifth terminal of the fifth power-on detection sub-circuit are all connected to-15V voltage provided by the brake drive plate, and the seventh terminal of the fifth power-on detection sub-circuit is connected with a brake signal wiring port on the brake drive plate.

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