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to  the  power  source.  Make  sure  that  voltage  between  (1)  and  (2)  of 

the  control  terminal  inside  the  AC  ARC  welding  power  source  is  in  the 

range  of  88V  and  90V.  If  it  is  less  than  or  more  than  this  range,  the 

tap  of  the  auxiliary  transformer  inside  the  AC  ARC  welding  power 

supply  should  be  replaced.

(NOTE)  In  practice,  it  is  by  no  means  easy  to  maintain  the  voltage  in 

the  said  range  between  88V  and  90V.  Yet,  it  is  important  to  maintain 

the  correct  voltage  by  securing  power  supply  with  sufficient  capacity  in 

order  to  obtain  desirable  welding  results.  Next,  the  control  power 

switch  (LINE)  turned  "ON". 

3-3.  용접전류의  조정     

Adjustment  of  welding  current

    콘트롤  박스의  전류조정  누름버튼  스위치(CONTACTOR)  PB3(+)  PB4(-)

를  상호  눌러보면서  교류아크용접기의  전류지침이  각기  좌우로  움직이는  것

을  확인하고  적당한  전류치로  세트한다.

    이  경우  “+”버튼을  누르고  있다가  급히  “-”로  바꾸는  것을  피하도록  한

다.  (전동기의  급속역전으로  인해서  브러시  등이  손상될  위험이  있다.)

    *  직류  용접기의  경우  볼륨을  이용해서  조정

    By  mutually  pressing  the  button  switch  for  current  adjustment  of  the 

control  box  (CONTACTOR),  PB3(+)  and  PB4(-),  check  if  the  current 

indicator  of  the  AC  ARC  welder  moves  left  and  right.  Then  set  it  to  an 

appropriate  value  of  current.  In  this  process,  do  not  suddenly  changed 

from  the  "+"  button  to  the  "-"  button.  (It  can  damage  the  brush  due  to 

sudden  reversal  of  the  electromotor.)

    In  the  case  of  a  DC  welder,  it  is  adjusted  by  using  a  volume.

3-4.  주행대차의  속도조정     

Speed  adjustment  for  traveling  cars

Содержание Longrun 25CA

Страница 1: ...25CT CA Operation Manual...

Страница 2: ...ADJUSTMENT AND OPERATION 4 COMPOSITIONS AND FUNCTIONS OF THE PARTS 5 OPERATION PRINCIPLE OF ELECTRIC CIRCUIT 6 MAINTENANCE AND INSPECTION 7 TROUBLESHOOTING 8 WIRE FEEDING AND CARRIAGE MOTOR DRIVING C...

Страница 3: ...yristor control system the machine is lightweight and small in size 1 BEAD 2 Pipe Wind Tower Tank 3 Motor Wire Panel 4 AC AC DC AC 1 Provides high quality and high proficiency welding conditions with...

Страница 4: ...nt Scope 100mm Vertical 100mm 50mm Horizontal 50mm Wire Reel 12 5kg 25kg Special Magazine Type Possible to use in bundle of 12 5kg 25kg Travel Speed Range 15 150cm min MOTOR Travel Motor 150W DC Motor...

Страница 5: ...SET 2 2 MOUNTING 1 SET 2 3 VER ADJ SENSOR SLIDE 2 SET 2 4 HOR ADJ SENSOR SLIDE 1 SET 3 WELDING HEAD 2 SET 3 1 WIRE FEEDING UNIT 2 SET 3 2 WIRE STRAIGHTENER 2 SET 3 3 PRESSURE ROLL 2 SET 3 4 NOZZLE 2...

Страница 6: ...lternative and direct current with its carriage assembled hence it is wise to refer to the manual below Check the primary AC welding power and DC welding power first and then start connecting 1 30 50M...

Страница 7: ...with the control device and the transmitting motor Insert the cord plug of the transmitting motor to the control device and connect the plug that is disconnected with the 2 power extension cords with...

Страница 8: ...ONTACTOR S2 OFF Magnetic contactor switch CONTACTOR TRAVEL S3 OFF Travel switch TRAVEL VOLTAGE WVC 4 6 ARC voltage regulator VOLTAGE 4 6 Scales TRAVEL SPEED TSP 0 Travel speed regulator TRAVEL SPEED 0...

Страница 9: ...securing power supply with sufficient capacity in order to obtain desirable welding results Next the control power switch LINE turned ON 3 3 Adjustment of welding current CONTACTOR PB3 PB4 By mutually...

Страница 10: ...the desired speed 3 5 Insertion of electrode wire coils into relay 4 Wire relay is the one for special magazine type First unfasten wing nuts in 4 spots and turn fingers to the inside and then insert...

Страница 11: ...h in either way turn the inching speed regulator to the right clockwise in order to adjust wire inching speed 3 7 Correction of wire bending 1 30cm Check if a type of feeding roll and the wire diamete...

Страница 12: ...S2 S3 ON PB5 START TRAVEL 2 WVC CURRENT PB3 PB4 3 PB6 STOP Set the tip and the parent metal about 30mm apart from each other Press the wire inching button switch to move the wire closer to the parent...

Страница 13: ...on of welding Switch on the SW S2 S3 for welding selection Press the PB5 START Traveling is processed when the ARC generated 2 During the welding Turn the ARC voltage adjustment volume WVC up and down...

Страница 14: ...itch ON for main line S W 2 Press wire inch button 1 Tip Align the wire end with the welding line Adjust the distance between the welding plane and the TIP 2 Align the wire with the welding plane Wire...

Страница 15: ...3 S W ON START Switch on the welding select S W Press the START button 4 Adjust the present welding voltage 3 Start welding 4 Welding in progress...

Страница 16: ...5 STOP Press the STOP button...

Страница 17: ...ne mm Electrode A Current A V Voltage V cm min Velocity cm min F 4 0 R 4 0 6 F R 700 650 33 38 170 7 F R 750 700 34 38 160 2 F R 750 720 34 38 140 10 F R 780 740 35 38 100 F 4 8 R 4 8 12 F R 800 750 3...

Страница 18: ...8 6 4 900 800 35 38 80 25 F R 4 8 6 4 950 850 35 40 75 28 F R 4 8 6 4 1000 900 35 40 75 32 F R 4 8 6 4 1100 950 33 42 65 36 F R 4 8 6 4 1100 950 33 42 65 40 F R 4 8 6 4 1200 1000 33 42 60 50 F R 4 8 6...

Страница 19: ...g motor 100W DC The 100W DC motor was used Specification of the electromotor Method DC Motor Output 100W Armature 80V 90V 1 2A Field 80V 90V 0 14A Number of Rotations 6 000 r p m 3 000 r p m Traveling...

Страница 20: ...it changes the reduction ratio of the velocity reduction device to achieve necessary wire transmitting velocity The gear composition for velocity reduction device Transmitting roll A Pinion A B Tooth...

Страница 21: ...evice for necessary wire diameter and there are two types as mentioned in table Look at the component list for further information about the wire transmitting device Form of Assembly A B C D E F Net r...

Страница 22: ...ire straightener can be set to a comfortable direction of adjusting the bent wire free angle since the adjusted plane is set to free angle if the screw is loosened Second the adjustment of wire works...

Страница 23: ...justed from perpendicular to horizontal position by turning the mouth angle for customized direction Look at the component list for further information about the wire pressurizing device 4 4 Nozzle as...

Страница 24: ...or further information about the nozzle assembly 4 5 Curved nozzle assembly mandatory TANDEM This curved nozzle when used in TANDEM position is designed for the distance between electrodes to be minim...

Страница 25: ...ge 50mm 2 Perpendicular position control device This device tack welding each of the horizontal position device above and the bracket in the mount assembly s head and after that the preceding electrod...

Страница 26: ...de angle Range 20 b Loosen the clamp lever and adjust the electrode angle for head tack welding bracket Range 20 3 Horizontal control with perpendicular position with rail preceding electrode only Loo...

Страница 27: ...from left to right Electrode gap L 60 420mm Right left control range L 25mm 4 9 Wire reel assembly 12 5kg 25kg 2 The spoke type wire reel tack welding 12 5kg and 25kg coils on top of the insulator The...

Страница 28: ...eling device assembly 1 Travel electromotor The travel electromotor is installed in a decelerator and it is a separately excited generator controlled and operated by a controller The control circuit i...

Страница 29: ...list for further information about traveling device assembly 4 12 Carriage assembly 1 V 2 2 3kg 1 Wheel clutch Wheel clutch the velocity reduction output moves a pair of driving wheels by using the fi...

Страница 30: ...djustment is appro priate when about 2 3kg force is needed to move the carriage without the clutch 4 13 Controller The controller is to control wire feeding and traveling speed and it is boxed and att...

Страница 31: ...Main elements of the electric circuit and descriptions of operation switches 1 MLS 2 DC on off DC on AC off 3 AC on off AC on DC off 4 9P 20 16P FCC 5 6...

Страница 32: ...7 9P 20 16P 8 TS 9 10 TSC 11 SM 12 FWIPB Feeding Retracting 13 PL 14 RWIPB Feeding Retracting 15 TRBCC BOX 16 FWCCV 17 FWVCV 18 RWCCV 19 RWVCV 20 FWVM 21 FWCM 22 RWVM 23 RWCM...

Страница 33: ...ch on for AC welding Switch off for DC welding 4 Front connection connector 9P 20 16P FCC Connect the control device with the preceding transmission device 5 The switch for welding starting Start te w...

Страница 34: ...ng to the arrow direction 15 Tandem relay box connection connector TRBCC There is an intermediation box for connecting the control device and the preceding backing welding power supply 16 Front weldin...

Страница 35: ...SCV Adjust the up down inching velocity of the preceding wire 27 Rear power fuse RPF Check the overflow of current in the backing transmitting motor control circuit 28 Rear wire inching speed control...

Страница 36: ...connection cable 7P Enables connection with the preceding welding power supply 2 Backing connection cable 7P Enables connection with the backing welding power supply 3 Control device interface connect...

Страница 37: ...5 Operation principle of electric circuit 5 1 Control circuit of the wire feeding electromotor 1 3 0 UJT C1 2 3 S2 OFF CR1 OFF OFF...

Страница 38: ...above the wire feeding speed that corresponds to a certain level of ARC voltage is adjusted by a thyristor and the phase required to fire signals is controlled by the time to charge a condenser that...

Страница 39: ...changed by a change in the load applied to the travel electromotor When travel speed decreases as a load is increased by a certain reason the organic voltage of the electro motor is reduced and the d...

Страница 40: ...is recommended to pay attention to any loosening of the parts Standard inspections are as follows 1 Abrasion of tips or contact tips every work day 2 Brush of the wire feeding electromotor and the tr...

Страница 41: ...6 2 Disassembly and assembly 1 A A B 6 1 3 There is no part that requires particular care but when disassembling the decelerator pay attention not to scratch the toothed wheels Do not dismantle the el...

Страница 42: ...he same way Place the desired new pinion and tooth and assemble it back together With reference to 3 of subsection of 6 1 apply grease and put the retainer back After the gear is in a right position b...

Страница 43: ...o work However it is dangerous to use a tester for adjusting an ARC voltmeter or a welding ammeter In these cases use a portable instrument of at least grade 0 5 or grade 1 and more 2 Screwdriver radi...

Страница 44: ...cap tire cord between the welding power supply and the controller is disconnected The fuse F1 is disconnected A light Indicator itself is broken 2 The wire inching button switch WIRE INCH PB1 PB2 is p...

Страница 45: ...t ARC voltmeter does not move Welding cable is not connected Lead line for ARC voltage is disconnected The magnetic contactor is not working In case when the ARC voltmeter is still moving Wire inching...

Страница 46: ...8 Wire feeding and carriage motor driving circuit...

Страница 47: ......

Страница 48: ...8 1 Wire transmission motor control circuit 1 UJT B1 B2 DR1 VRD1 C1 TR Z C1 C CZ C1 UJT Vp UJT E B1 C1 PT SCR1 GATE SCR1 SCR1 A K SCR1 TR Z TR Z Val Vml Val Vml Z SCR1 Val Vml 2 WVC1 SET SET Val...

Страница 49: ...picted in the circuit changes in the VRD1 constant voltage diode and the diode DR1 located between the single phase transistor of UJT s base B1 and B2 in the power voltage cycle It gets motivation of...

Страница 50: ...age can be set higher than the actual SET when the ARC voltage is in steady SET by means of WVC1 Then the Val Vml is the only figure increasing so the base current of the transistor increase along wit...

Страница 51: ...9 Component lists 9 1 CARRIAGE MAIN BODY ASS Y...

Страница 52: ...HEEL LEFT 1EA 1 23 WHEEL RIGHT 1EA 1 24 1 WHEEL LEFT 1EA 1 24 2 WHEEL RIGHT 1EA 1 25 BEARING BOX LEFT 1EA 1 26 BALL BEARING 2EA 1 27 SNAP RING HOLE 2EA 1 28 SPACE WASHER 2EA 1 29 WRENCH BOLT 12EA 1 30...

Страница 53: ...9 2 CARRIAGE DRIVING GEAR ASS Y...

Страница 54: ...FT 2 1EA 23 BALL BEARING 4EA 24 BEARING COVER 3 1EA 25 OIL RING 2EA 26 COLLAR 2 2EA 27 CHANGE GEAR 1 1 1EA 28 CHANGE GEAR 1 2 1EA 29 KEY 2EA 30 SNAP RING 2EA 31 WRENCH BOLT 8EA 32 BEARING COVER 4 1EA...

Страница 55: ...9 3 CARRIAGE CLUTCH ASS Y...

Страница 56: ...SPACE WASHER 2EA 57 BUSHING 1EA 58 FLAT HEAD SCREW 2EA 59 CAM BLOCK 1EA 60 SPRING ROLL PIN 1EA 61 SPRING ROLL PIN 1EA 62 PIN 2 1EA 63 CAM 1EA 64 CAM STOPPER ARM 2EA 65 ROLLER 2EA 66 PIN 3 2EA 67 DIVID...

Страница 57: ...9 4 WELDING HEAD ASS Y No DESCRIPTIONS Q TY 1 WIRE FEEDING UNIT 1EA 2 WIRE STRAIGHTENER 1EA 3 PRESSURE ROLL 1EA 4 NOZZLE 1EA...

Страница 58: ...EEDING SHAFT 1EA 7 WORM WHEEL 1EA 8 WORM GEAR 1EA 9 SHAFT 1EA 10 GEAR 1EA 11 GEAR 1EA 12 GEAR 1EA 13 BALL BEARING 2EA 14 BALL BEARING 2EA 15 BALL BEARING 2EA 16 THRUST BALL BEARING 2EA 17 BEARING NUT...

Страница 59: ...PER 1EA 3 YOKE 1EA 4 GUIDE ROLL 1EA 5 PRESSURE SCREW 1EA 6 LOCK NUT 1EA 7 FEMALE SCREW 1EA 8 BLOCK 1EA 9 YOKE PIN 1EA 10 PIN 1EA 11 PIN 1EA 12 PIN 1EA 13 PIN 1EA 14 PIN 1EA 15 RETAINING RING 8EA 16 RE...

Страница 60: ...E ROLL 1EA 4 BEARING 1EA 5 PRESSURE ROLL SHAFT 1EA 6 PIN 1 1EA 7 PIN 2 1EA 8 CLAMPING SCREW 1EA 9 PRESSURE SPRING 1EA 10 WASHER 1EA 11 WASHER 1EA 12 HANDLE 1EA 13 RETAINING RING 2EA 14 RETAINING RING...

Страница 61: ...Y No DESCRIPTIONS Q TY 1 BUSBAR NUT 1EA 2 PILOT 1EA 3 BUSBAR ADAPTOR 1EA 4 EXTENSION NOZZLE 1EA 5 EXTENSION NOZZLE 1EA 6 TIP NUT 1EA 7 TIP 1EA 8 MELT DISTRIBUTOR 1EA 9 INSULTING SLEEVE 1EA 10 WRENCH...

Страница 62: ...R 1EA 2 HOPPER ARM 1EA 3 CROSSING BRACKET 1EA 4 INSULATION TUBE 1EA 5 ROD 1EA 6 RUBBER TUBE 1EA 7 CLAMPING BLOCK 1EA 8 INSULATION TUBE 1EA 9 VALVE BODY 1EA 10 SPACER 1EA 11 VALVE LINING 1EA 12 VALVE K...

Страница 63: ...PIN 4EA 6 INSULATED BUSH 1EA 7 INSULATED WASHER 1 1EA 8 INSULATED WASHER 2 1EA 9 INSULATED WASHER 3 1EA 10 WASHER 1EA 11 SPRING CAP 4EA 12 REEL BASE BLOCK 1EA 13 REEL POST 1EA 14 WRENCH BOLT 1EA 15 WI...

Страница 64: ...10 DC AC Welding carriage electric wiring diagram Longrun 25CT...

Страница 65: ...ere Purchased Where you use Whenever you request replacement parts or information on this machine always supply the information you have recorded above The date number is especially important when ide...

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