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PATON 

VDI-SERIES PRO 

 DC MMA/TIG/MIG/MAG  

 

-18- 

3.9. WELDING AT PULSE WELDING CURRENT  

This function is designed to simplify the control of a welding process in various spatial 
welding positions, excluding a flat welding position. This function is also used in welding 
nonferrous  metals.  When  this  function  is  activated,  the  application  of  pulse  welding 
current improves the mixing of molten metals in the weld area and causes forced action 
on the transfer of molten metal drops into the welding pool, therefore the stability of the 
weld formation and the stability of the welding process are improved. The pulse welding 
current  in  the  manual  arc  welding  process  affects  the  weld  parameters  similar  to  the 
movement of the operator hand in manual arc welding process, specifically at hard-to-
reach places.  The proper adjustment of the welding process parameters in the welding at 
pulse welding current has a direct effect on the weld quality, specifically reduces weld 
metal porosity and decreases the graininess of the weld metal. As a result of the improved 
weld quality, the weld strength increases. 
To activate this function, it is necessary to set the following three operational parameters 
of the welding process: current pulse amplitude 

[Po.P]

, current pulse frequency 

[Fr.P]

and  duty  cycle 

[dut].

  By  default,  the  current  pulse  amplitude  is  0 

[OFF],

  that  is,  the 

function is switched off, the current pulse frequency is 50 Hz, and the duty cycle is 50 %. 
To activate the function, set the current pulse amplitude 

[Po.P]

 higher than 0. The current 

pulse  amplitude  should  be  set  in  percentage  of  the  welding  current  specified  for  the 
welding process. 

Example:

 

 

Welding is to be performed with electrode wire 3.0 mm in diameter. 

 

The set welding current is 90 A. 

 

The current pulse amplitude is 40 %. 

 

The current pulse frequency is 50 Hz (default value). 

 

The duty cycle is 50 % (default value). 

The result is the following: the welding current pulse amplitude will be in the range of  
54 … 126 A, the current pulse frequency will be 50 Hz, and the current pulse length will 
be equal to the length of an interval between pulses. If the duty cycle is not equal to  
50 %, the current pulses will be nonsymmetrical relative to the intervals between pulses, 
but the average welding current value will be equal to the set welding current value of 
90 A. As a result, the average heat input to the weld will not change. 
If it is required  to reduce  heat input to the weld, as in  welding thin parts, the  welding 
current should be decreased by performing the standard setting operations. In this case, 
current  pulse  parameters  will  be  adjusted  automatically  according  to  the  set  welding 
current, and the operator can control the reduction of the heat input, as compared with the 
heat  input  at  the  initial  welding  current,  by  simultaneously  varying  the  current  pulse 
amplitude and duty cycle. 
The aforementioned parameters should be set differently for different welding processes, 
depending on the requirements of the operator.  
 

Operations required to set these parameters for the current welding process are described in Section 

6.1

 

Содержание MMA-160P

Страница 1: ...PATON VDI SERIES PRO DC MMA TIG MIG MAG 1...

Страница 2: ...unit 17 3 7 Short arc welding mode 17 3 8 Reduction of open circuit voltage 17 3 9 Welding at pulse welding current 18 4 Argon arc welding process TIG 19 4 1 Preparing the welding unit for operation 1...

Страница 3: ...arc welding process TIG 28 7 3 Semiautomatic arc welding process MIG MAG 28 8 Operation with an electric generator 29 9 Maintenance 29 10 Storage 30 11 Transportation 30 12 Specification data 30 13 D...

Страница 4: ...CODE 35105 VAT PL8133751525 I the undersigned declare under our sole responsibility that the product listed below complies with the following Directives Product DIGITAL INVERTER RECTIFIERS Type PATON...

Страница 5: ...MMA welding process mm Set current for MMA and TIG welding processes A Electrode wire diameter for a MIG MAG welding process mm Cross section area of the power cable conductor mm2 Maximum cable lengt...

Страница 6: ...5 60 6 mm for a free melting electrode 4 0 100 6 0 150 1 GENERAL INFORMATION The digitally controlled rectifier welding units PATON VDI 160P VDI 200P and VDI 250P are designed for direct current gas s...

Страница 7: ...ansformer are significantly reduced as compared with other welding units with similar characteristics The basic advantages of the PATON welding units are the following 1 The possibility to adjust weld...

Страница 8: ...er supply voltage 50 60 Hz V 230 230 230 Rated power supply current A 18 21 25 28 32 36 Rated welding current A 160 200 250 Maximum operating current A 215 270 335 Operating load factor 70 at 160 A 10...

Страница 9: ...width height mm 325 245 250 325 245 250 325 245 250 Weight without the coil and accessories kg 5 4 5 6 5 7 Protection class IP 33 IP 33 IP 33 These Professional Series welding units are protected agai...

Страница 10: ...NNECTORS 1 Unit of measurement for the current displayed parameter a V volt b A ampere c percent d s second 2 Digital seven segment display 3 Buttons for increasing or decreasing the selected paramete...

Страница 11: ...er or higher than the rated voltage A The bayonet connector socket for connecting a The electrode cable or the grounding cable in some cases when special electrodes are used for welding for the manual...

Страница 12: ...against atmospheric condensate drops WARNING After completing welding works in hot weather or completing intensive welding works in any weather switch off the welding unit only after at least 5 minute...

Страница 13: ...The power supply connector power cable cross section area and supply line fuses should be selected with consideration for the technical characteristics of the welding unit 2 4 REQUIREMENTS FOR AN ELE...

Страница 14: ...welding process If the manual arc welding process has been missed during the selection press and hold button 5 again for sequentially selecting the welding process required 7 Set the specified welding...

Страница 15: ...t may be increased in order to improve the conditions for arc starting when the welding unit is connected to a reliable power supply system but the increased current can cause burn out when welding th...

Страница 16: ...ty of arc in short arc welding mode when the welding unit is connected to a reliable power supply system but the increased current in this mode can cause burn out when welding thin parts Therefore it...

Страница 17: ...it is sometimes required to increase the threshold u AF value for the reduced voltage welding function to 18 V The procedure for changing the values of the operational parameters of the welding unit...

Страница 18: ...50 To activate the function set the current pulse amplitude Po P higher than 0 The current pulse amplitude should be set in percentage of the welding current specified for the welding process Example...

Страница 19: ...r of the gas cylinder 6 Open the shut off valve of the gas cylinder Check the tightness of the connection with the gas cylinder 7 Connect the power cable of the welding unit to the outlet of the power...

Страница 20: ...n is set by default and is designed for welding torches with contact arc starting without using oscillators and other like devices In contrast to conventional methods of arc starting the contact arc s...

Страница 21: ...to the movement of the operator hand in manual arc welding process specifically at hard to reach places The proper adjustment of the welding process parameters in the welding at pulse welding current...

Страница 22: ...e welding unit has a special voltage current characteristic as a function of the unit output current against the voltage at the output terminals of the unit As an external electrode wire feeding unit...

Страница 23: ...f the welding unit will blink warning the operator that the unit is ready to switch to the next welding process If the semiautomatic arc welding process has been missed in the process of selection pre...

Страница 24: ...nd the stability of the welding process are improved The pulse welding current in the manual arc welding process affects the weld parameters similar to the movement of the operator hand in a manual ar...

Страница 25: ...ng mode by simultaneously varying the voltage pulse amplitude and duty cycle The aforementioned parameters should be set differently for different welding processes depending on the requirements of th...

Страница 26: ...n the front panel This switching process may appear to be lengthy but it should be noted that this process is not often required in operating the welding unit WARNING If button 5 is held for more than...

Страница 27: ...e increment 0 1 s 3 Ar F Voltage in the reduced voltage welding mode 40 default value a 0 OFF 100 at low currents positive or negative increment 1 4 u AF Threshold voltage for the reduced voltage weld...

Страница 28: ...3 Fr P Current pulse frequency 5 0 Hz default value a 0 2 50 Hz positive or negative increment 1 Hz 4 dut Duty cycle the ratio of the pulse length to the pulse repetition period 50 default value a 20...

Страница 29: ...off the welding unit and disconnect the power cable from the outlet of the power supply system Wait for about 5 minutes until static charges in the unit circuits disappear and then perform the mainten...

Страница 30: ...In this case the electrical outlet of the power supply system and the power cable of the welding unit should be selected with consideration for the actual power supply voltage Rated power supply volta...

Страница 31: ...tenance and operation resulting in damage to the device the manufacturer is not liable INSTRUCTION Before using this product please read this manual and use the instructions in this manual This instru...

Страница 32: ...of electrical devices such as the cardio stimulator Persons wearing such equipment should consult a physician before entering the area where welding work is performed Welding hoses should be arranged...

Страница 33: ...y of 6 June 2014r Dz U 2014 pos 817 Pursuant to the Ordinance of the Minister of Health on Social Welfare dated 09 07 1996 OJ No 68 pos 194 The employer is required to carry out research and measureme...

Страница 34: ...when removing the protective box in order to avoid exit of the unit system on the equipment Cleaning should be carried out carefully keeping the compressor hose at a sufficient distance to avoid damag...

Страница 35: ...f disposal of electrical equipment where it will be accepted free of charge Information on such collection points for used equipment can be found on eg websites Proper disposal helps preserve valuable...

Страница 36: ...PATON VDI SERIES PRO DC MMA TIG MIG MAG 36 17 ELECTRICAL SCHEMATIC DIAGRAM Basic electrical diagram Source PATON VDI 160 200 250 DC MMA TIG MIG MAG BVR 0400 BIS 0403 BUV 0400 V V 230V...

Страница 37: ...he Central PATON Service Center Invertech Piotr B aszkowski 9 Ludwika Zamenhofa Street Sanok City Poland zip code 38500 Head of Service Center Piotr B aszkowski Phone 48 889 226 032 e mail serwis pato...

Страница 38: ...__________________________________________________ ______________________________________________________________________ Date of reception of the welding unit for repair _____ __________ 20 ___ year...

Страница 39: ..._______________________________ ______________________________________________________________________ Faulty condition cause ______________________________________________________________________ ___...

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