线切割控制柜使用说明书 Wire cut machine cabinet manual 一) Instructions for high frequency power supply 1．Main technical parameters 1．1 Rectangular pulse pulse width： ti:2uS---128us Adjustable Pulse interval ratio (Toff/Ton) ：4---9 Adjustable Power tube：7 gear arbitrary adjustment 1．2 Group number pulse Sub pulse width ti/Sub pulse interval to Total pulse width ti 16us---240us Total pulse interval to 1---9ti 1．3 Processing voltage 100V 1．4 Processing current 0.3A---6A 1．5 power output 8us/8us 7 sets of outputs 1．6 Maximum cutting thickness ≥400mm 1．7 Maximum processing efficiency 1．8 Power supply：AC380 ≥160mm2/min 50HZ 2．Main structure and working principle The high-frequency power supply is composed of main vibration circuit, pulse width regulation circuit, interval regulation circuit, power amplification circuit and rectifier circuit. The main oscillator circuit generates the main frequency pulse by 8MHz crystal oscillator, Input to American original chip through frequency division circuit, Control pulse waveform, the waveform is pre amplified, drive VMOS power tube, output stable and neat processing signals. The power amplifier circuit adopts three high-performance and high-power VMOS FET, 7 switches select operation. VMOS tube is characterized by fast switching speed, voltage drive, large output current, and special pulse power supply for wire cutting with high efficiency and high finish. 3．Panel operation method and instructions 3．1 The setting of pulse width can be adjusted by pressing the up and down buttons, which can be adjusted by 2-128us 3．2 The setting of pulse interval ratio can be adjusted by pressing up and down buttons. The setting is adjustable from 4-9 3．3 Power tube selection 0-7 adjustable （二）Common fault analysis and maintenance 1．Drive power part 1．1 X、Y The stepper motor cannot be energized and locked. （1）The rectifier bridge of driving power supply is damaged. （2）+12V power supply failure or disconnection. 1．2 X or Y stepper motor is out of phase. （1）The stepper motor is disconnected. （2）The drive board is faulty. （3）The computer control card is faulty or disconnected. 1．3 The X or Y stepping motor loses its step. （1）Poor contact of aviation plug or rectangular plug. （2）Rectifier electrolytic capacitor failure. 2．High frequency power supply 2．1 The voltmeter has no voltage indication. （1）The fuse core is burnt out, and the rectifier bridge or line is short circuited. （2）Poor contact or broken wire. （3）The rectifier bridge is damaged and open circuit. 2．2 There is processing voltage and no high frequency output. （1）Control card failure （2）Use a thick wire to short circuit between the positive and negative of the high-frequency power supply. If there is current, it is an open circuit of the high-frequency output line. 2．3 Abnormal increase of processing current （1）The VMOS power tube is damaged. Turn on the power output switch in turn, find out the power tube with high corresponding current and replace it. （2）The oscillation circuit fails and the duty cycle of the pulse signal becomes larger. （3）The reverse diode connected in parallel at the red and black high-frequency output terminal breaks down. （4）The sampling frequency conversion circuit of the control card (controller) is faulty. High frequency power supply cutting specification table (for reference) One time cut The thickness of the workpiece （mm） Pulse width Interval 0-15 16 4-6 6 50 50 15-30 32 4-6 6 50 50 30-60 32-64 4-7 4-6 50 50 60-100 C8 7-9 3-5 50 100 100-200 C8 7-9 2-4 50 100 200-500 C8 7-9 2-4 50 100 Current Wire speed Tracking Tip：thickness over 100mm, pulse width/interval set bigger, current set lower, keep ammeter pointer stable The thickness of the workpiece 0-30mm Three time cut 30-60mm Pulse width Interval Current 32 4-6 6-7 50 50 8 8 3 30 50 2 9 1-2 20 50 64 4-6 6-7 50 50 16 8 3 30 50 8 9 1-3 20 50 64 5-6 5 50 50 8 4 8 1-3 60-90mm 16 16 Wire speed Tracking 30 20 50 50 100-200mm 200-500mm C8 7-9 2-4 50 100 32 9 3 30 100 8 9 1-3 20 100 C8 7-9 2-4 50 100 32 9 3 30 100 8 9 1-3 20 100 （Tip：cut copper, pulse width set a little bit bigger） Copper aluminum alloy 0-30 32 4-6 5-6 50 50 30-60 64 4-6 5-6 50 50 6-8 5-6 50 50 60-100 64 100-200 C8 9 2-4 50 100 200-500 C8 9 2-4 50 100 0-30 32-64 5-6 5-6 50 50 30-60 64 5-6 5-6 50 50 60-100 64-C8 7-9 4-5 50 50 100-200 C8 9 4-5 50 100 200-500 C8 9 3-4 50 100 （三）List of vulnerable parts of control cabinet ITEM MODEL NUMBER Application site 1 VMOS IRF640 17 Driving power supply 2 VMOS IRF250 7 High frequency power supply 3 Axial flow 120/AC220V 2 High frequency power fan 4 diode supply/Driving power supply FR307 4 High frequency power supply （四）External connection 4．1 The four core power socket is the power input terminal of the control cabinet： 4 is Zero line N； 1、2、3 is Phase line L1、L2、L3 The grounding terminal shall be reliably grounded 4．2 16 Core aviation plug： No. 1 2 Mean PE No. 10 11 Mean 168 G0 3 4 5 6 7 8 9 X11 Y11 Z11 X23 Y23 Z23 12 13 14 15 16 GO 343 S S S’ 30 Core aviation plug： No. 1 2 3 4 5 6 8 9 10 Mean PE XA XB XC XD XE 3L+ YA YB YC No. 11 12 13 14 15 16 17 18 19 20 Mean YD YE 3L+ UA UB UC VA VB VC 3L+ No. 21 22 23 24 25 26 27 28 29 COM1 340 341 COM 339 351 353 354 Mean 7 Tip: 16 Core aviation plug definition and interpretation: 2、3 pins connected to AC 220V. Water pump connected to pins 4, 5 and 6. The wire conveying motor is connected to pins 7, 8 and 9. 10 pin ("168") broken wire protection (middle of upper cantilever or lower cantilever). The work piece is connected to pins 11 and 12 (G0). Pin 13 ("343") is connected to working sampling (sampling "+"). 14. 15 pin (s) is connected to the conductive block (the upper and lower cantilevers are close to the front guide wheel) 16 pin (s') connected to sampling (sampling "-") 31 Core aviation plug definition and interpretation: XA, XB, XC, XD and XE are connected to X-direction stepping motor. YA, YB, YC, YD and YE are connected to Y-direction stepping motor. Wiring sequence：Red, yellow, blue, white, black. The green line is generally the power line connected to the "7" and "13" pins. "Com" is the blue line (0V) of the proximity switch, "339" is the overtravel protection switch, "351" is the brown line terminal block (12V) of the proximity switch. “com1”=“com”（Common end 0V） 。
