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9 TROUBLESHOOTING GUIDE

9 - 15

GT 326-E

AL37 Servo Drive Alarm

Description

Servo motor or amplifier malfunction

Troubleshooting

1. Open the electric cabinet. Check the error code

shown on the servo amplifier

2. Follow the troubleshooting guide to solve the

problem or contact us for technical support.

3. Press

“STOP” button on HMI to clear the alarm.

AL38 Motor Lost Its Reference Point!

Description

1. If the pusher home position switch SQ2 is ON but the

current position of pusher is off more than 20mm this
alarm will be generated.

2. If pusher is at home position (-1.00mm<current

position<1.00mm) but switch SQ2 is OFF this alarm
will be generated.

Troubleshooting

1. Check if the servo motor is defective.

2. Check if switch SQ2 is defective of misadjusted.

3. Press

“STOP” button on HMI to clear the alarm and

press backward to bring the pusher to its home
position.

AL39 Servo Motor Positioning Error!

Description

The Servo motor positioning alarm occurs whenever the

motor encounters some unexpected resistance.

Troubleshooting

1. Check if the analog module 02DA-E2 is defective.
2. Check for lose wiring connection between the

analog module and PCB.

3. Check if the servo amplifier and motor are

malfunctioning.

4. Check if the encoder of servo motor is functional.
5. Check if the LED of encoder input on PLC is

flickering.

6. Press

“STOP” button on HMI to clear the alarm.

Содержание GT 326-E

Страница 1: ...Instruction Manual ENG LNS America 4621 East Tech Drive Cincinnati Ohio 45245 9 XA1 02 US GT 326 E Touch Screen Remote...

Страница 2: ...2 POSITIONING OF THE BAR FEEDER 3 3 3 3 MOUNTING 3 6 3 4 CONNECTIONS 3 8 4 ELECTRICS 4 1 LAYOUT OF THE ELEMENTS 4 1 4 2 ELECTRICAL COMPONENTS 4 2 4 3 SYMBOLS 4 9 4 4 PLC I O 4 10 4 5 DIAGRAMS 4 11 4...

Страница 3: ...POSITION SYSTEM 7 22 7 14 BAR PREPARATION 7 23 7 15 SPINDLE REDUCTION TUBES 7 24 8 OPERATION 8 1 REMOTE CONTROL OPERATION 8 1 8 2 POWERING UP DOWN AND EMERGENCY STOP 8 5 8 3 AUTOMATIC MANUAL SEQUENCE...

Страница 4: ...ng the system please refer to the chapter on the device to be set for example see chapter xxx Whenever possible the part numbers contained in the instruction manual are shown with the indicated elemen...

Страница 5: ...ges refer to the modification of equipment added or deleted items on bar feeder function change quantity change of bar feeder components material change setting method change and any modification on s...

Страница 6: ...system No one should be near the handing load or within the operating range of the overhead hoist crane forklift or any other means used for lifting and transportation Do not knock the bar feeder whi...

Страница 7: ...1 4 Chapter 1 BASIC NOTIONS GT 326 E...

Страница 8: ...imum RPM Other factors such as material type brass copper bronze and other malleable materials clamping efficiency of the machine workholding and alignment of the bar feed oil type bar preparation and...

Страница 9: ...R MEASUREMENT a bar diameter b bar diameter 1 2 3 Pusher collet size a Inch metric Conversion To convert to millimeters multiply inches 25 4 To convert to inches multiply millimeters X 0 0394 a b a b...

Страница 10: ...Chapter 2 TECHNICAL DATA 2 3 GT 326 E 2 4 FLOOR PLAN LtoRF Bar Feeder...

Страница 11: ...2 4 Chapter 2 TECHNICAL DATA GT 326 E RtoLF Bar Feeder...

Страница 12: ...Pusher not visible C Vise Material clamping device D Remnant detection sensor E Guiding channel F Magazine rack G Bar measuring device not visible H Front rest I Hydraulic pump J Hydraulic tank K Remo...

Страница 13: ...2 6 Chapter 2 TECHNICAL DATA GT 326 E...

Страница 14: ...cal and safety reasons the bar feeder must be unpacked in a spacious well lit location 1 If the bar feeder is received in a crate start by unscrewing the top panel 2 Remove the front 3 Remove the side...

Страница 15: ...s its final destination behind the lathe making sure that it remains horizontal in balance and that no one is nearby or under the suspended load Do not knock the bar feeder against hard objects as you...

Страница 16: ...bar feeder vise jaws to the face of the chuck of the lathe L1 should not be less that the maximum bar length the bar feeder is capable of loading refer to Technical Data Move the bar feeder accordingl...

Страница 17: ...ase refer to further instructions related to the Telescopic Tube and safety joint pipe Telescopic Tube length check Note 1 Depending on the configuration of the machine the telescopic tube stroke and...

Страница 18: ...s You will position the barfeed up against the lathe as close as possible with the stands located in the shipping NGB mode see below position with NO concern of the spacing for the telescopic tube Onc...

Страница 19: ...r feet are supported Loosen all locking screws F 6 Adjusting the central screws E set the height of the bar feed system Normally when the reference point is known this adjustment is approximately set...

Страница 20: ...lightly under tension for precise alignment The purpose of this operation is to perfectly align the center of the bar feeder with the centerline of the lathe spindle 1 Clamp an alignment bushing into...

Страница 21: ...ng bolts are tightened check the alignment again and correct it if necessary Tighten the nuts of the leveling screws 3 4 CONNECTIONS Once the bar feeder is aligned and anchored to the floor the bar fe...

Страница 22: ...A007A Remote control HMI SQ1 X03 B18120400 Bar measuring device SQ2 X13 Pusher home position SQ3 X14 C11110400 Guiding channel opened switch SQ4 X15 Guiding channel closed switch SQ6 X17 Clamping vis...

Страница 23: ...03011 SERVO AMP B14120101 Servo amplifier B24110150 KM1 B18180001 Hydraulic pump M1 contactor QF2 B18210030 24V DC power supply breaker and PLC circuit breaker POWER SUPPLY B25120020 24V DC power supp...

Страница 24: ...ier The Servo Amplifier controls the movement of the Servo Motor Note They are factory pre set Never change the parameter settings of the servo amplifier They are factory pre set Please contact the fa...

Страница 25: ...op loop are interrupted After the problem is fixed reset the circuit breaker by switching to ON Designation Description A Rating adjustment preset at 2 5A B Switch button C b KM1 The KM1 contactor is...

Страница 26: ...signation Description A Input terminals B Output terminals C Input signals indication LED Indicate the status of inputs X0 to X43 D Output signals indication LED Indicate the status of outputs Y0 to Y...

Страница 27: ...ower supply converts AC 220 V to 24V DC for the low voltage circuit Designation Description A 220V AC input terminals B 24V DC output terminals 4 2 7 PCB Printed Circuit Board Includes various compone...

Страница 28: ...erminals of SQ11 SQ10 T1 T2 T2 T3 T3 9 bridging terminal TB9 1 2 3 4 5 24 PLC signals for energizing R1 R2 R3 R4 R5 TB10 1 2 3 4 5 6 Connect to PLC input contacts X14 X15 X17 X13 X12 TB11 GD TR VR 4 G...

Страница 29: ...transformer must be installed and wired according to the power voltage The incoming power must be connected to the primary terminal block Use the contacts corresponding to the supplied power 346V AC...

Страница 30: ...2 3 Diode 4 Main power switch QS1 5 Emergency stop button STP1 STP2 7 Hydraulic pump M1 8 Light Emitting Diode 9 Electromagnetic switch KM1 K1 10 Pressure switch SP1 SP2 11 Proximity switch SQ1 SQ2 SQ...

Страница 31: ...4 10 Chapter 4 ELECTRICS GT 326 E 4 4 PLC I O Circuit diagram XA1 25 A001C V1 Torque V2 Speed...

Страница 32: ...Chapter 4 ELECTRICS 4 11 GT 326 E 4 5 DIAGRAMS 4 5 1 AC circuit Circuit diagram XA1 25 A001C...

Страница 33: ...4 12 Chapter 4 ELECTRICS GT 326 E 4 5 2 Emergency stop circuit Circuit diagram XA1 25 A001C...

Страница 34: ...Chapter 4 ELECTRICS 4 13 GT 326 E Circuit diagram XA1 25 A001C...

Страница 35: ...4 14 Chapter 4 ELECTRICS GT 326 E Circuit diagram XA1 25 A001C...

Страница 36: ...If you have any question please contact our technician for further information NOTE A correct connection between lathe and bar feeder is critical for safe and reliable operation It is recommended to...

Страница 37: ...4 16 Chapter 4 ELECTRICS GT 326 E Interface diagram BXA00001...

Страница 38: ...ndled according to INTERFACE00 setup d Auto cycle signal A2 PLC input X41 This signal indicates that lathe is in automatic mode and lathe is executing the machining program cyclically This signal is u...

Страница 39: ...When the pusher reaches BAR END position during feed out process relay R3 energizes This signal is used to indicate that the rest bar stock length is not long enough to machine a complete part accord...

Страница 40: ...4 4 and 4 5 for wiring connection in the switch Optional Retraction safety switches SQ10 SQ10a The switches detect the position of bar feeder to ensure bar feeder is ready and the lathe can be put in...

Страница 41: ...4 20 Chapter 4 ELECTRICS GT 326 E...

Страница 42: ...tion of the bar feeder a pressure of 5 6kgf cm2 is mandatory Designation Part number Description A C12114500 Bar loading pneumatic cylinder B LtoRF XA1 27 A001B Air control unit RtoLF XA1 27 A002B C R...

Страница 43: ...fore it enters pneumatic system Air pressure required 5 6kgf cm2 of shop air preferably clean and dry 5 2 1 Layout of the elements Designation Part number Description A C13120300 Air inlet B C11120100...

Страница 44: ...se long enough to allow the complete travel 500 mm of the retraction system When the hose is connected it should not lie on the ground for safety reasons and to prevent damaged to the hose 1 Place cla...

Страница 45: ...ents Designation Output Part no Description A C13121800 8mm air inlet from F R L combination B C14120200 Air outlet silencers SP1 X11 C11121400 Pressure switch PE converter YV11 Y17 C11110100 Second f...

Страница 46: ...eumatic cylinder activated by double effect solenoid valve 5 3 3 Air pressure switch SP1 To guarantee the compressed air is supplied to the bar feeder the pressure switch confirms the pressure is suff...

Страница 47: ...e by pushing up the plug to open the drain plug and drain 2 Check the lubricator The oil consumption varies with the bar feeder applications The oil level should not exceed half of the oil cup It is r...

Страница 48: ...Chapter 5 PNEUMATICS 5 7 GT 326 E 5 5 PNEUMATIC DIAGRAMS Pneumatic drawing XA1 27 P001A...

Страница 49: ...5 8 Chapter 5 PNEUMATICS GT 326 E Pneumatic drawing XA1 27 P001A...

Страница 50: ...ntrally supported in the guiding channel 2 Reducing friction between the bar in rotation and the guiding channel this not marking the surface of the bar 3 To absorb the vibration created during high r...

Страница 51: ...nant tray The tray collects remnants extracted from the pusher collet It is located between the bar feeder body and oil tank The maximum remnant length allowed is 350mm The minimum is 70 mm The capaci...

Страница 52: ...d into bar feeder before running Oil specifications see below Hydraulic oil capacity 28 liters Filling the tank Slowly pour the oil into the oil tank directly as shown The oil level should be kept aro...

Страница 53: ...nce every 6 to 8 months Please follow the procedures below 1 Power OFF the bar feeder system Verify that most of the oil returned to oil tank 2 Remove the remnant tray 3 Place a container with suffici...

Страница 54: ...nder This system stores the bars and loads the bars into the guiding channels Once adjusted the bar diameter selection fingers will consistently load the bars one by one into the guiding channels 7 1...

Страница 55: ...d raise the upper limiters B 2 Release the locking handle D slide the diameter adjusting handle E to the desired position and secure with locking handle The loading fingers will be positioned properly...

Страница 56: ...channels are filled with oil using the hydrodynamic principle to support the bar in rotation For optimum performance the appropriate guiding channel diameter must selected 7 2 1 Layout of the element...

Страница 57: ...e xx mm Channel set Standard pusher Extended pusher LtoRF Bar Feeder 2 5M 08 11 14 17 19 21 23 27 XA1 31 A001B xx XA1 31 A105B xx 3 2M XA1 31 A015A xx XA1 31 A101B xx 12 3 7M XA1 31 A017A xx XA1 31 A1...

Страница 58: ...ts home position The bar is then clamped in the clamping vise The long pusher is lowered into the pusher guiding channel The pusher advances and the bar is inserted into the collet of the pusher The b...

Страница 59: ...r is disengaged from the chain and lifted by the pusher hooks When the channel is closed the long pusher is connected to the chain Part of the long pusher is able to extend outside of bar feeder Durin...

Страница 60: ...031 064 XTP201610 RFA XTP751620 RFA 16 11 028 031 074 19mm 028 30 453 US 18mm 18mm 19mm XHP201810 15 5mm 015 031 013 155 18 7 028 031 084 XTP201810 LFA XTP751820 LFA 18 8 028 031 094 XTP201810 RFA XTP...

Страница 61: ...XA1 15 A010A 16 16 11 028 031 074 19 6 028 30 453 US 18mm 18mm 19mm XHP201810 15 5mm 015 031 013 155 18 7 028 031 084 XA1 31 P003C 19 XTP201810 LFA XA1 15 A009A 18 18 8 028 031 094 XA1 31 P005B 19 XT...

Страница 62: ...7 4 1 Layout of the elements 7 4 2 Complete Changeover Please do not turn the power off of the bar feeder during a changeover to ensure the pusher position is read correctly and make sure there is no...

Страница 63: ...ition 12 Using the HMI enter the parameter Diameter length setup 13 If configured for fixed headstock lathe install the corresponding spindle liner in the lathe For sliding headstock machines Swiss ty...

Страница 64: ...in tension may require adjustment after running in production for extended period of time Check tension once every 6 months 2 Turn the screw B clockwise using wrench to retighten the chain 1 Slightly...

Страница 65: ...can be optimized 7 6 1 Layout of the elements Designation Part no Description A XT121070000 Vise blades B C12113000 Clamping device cylinder C C11130400 Air regulator 7 6 2 Replacement of the blades T...

Страница 66: ...eder is designed to allow the loading of random length bars without any adjustment The bar measuring device serves to receive the front end of the newly loaded bar In automatic operation via a mechani...

Страница 67: ...r bar stock movement is synchronized with the headstock movements during automatic mode During automatic mode there are 2 conditions for the feeding system Headstock Synchronization When the collet of...

Страница 68: ...The two position automatic hydrostatic front stabilizer with v shaped guiding elements dampens residual vibration between the front of the bar feeder and the back of the spindle Quickly and accurately...

Страница 69: ...oil to flow around the bar V shaped blocks are installed for round bar stock Round shaped blocks are for hexagonal and square materials They are sized to the bar diameter 0 2 mm Front rest blocks Rou...

Страница 70: ...o manual mode 2 Go into FUNCTIONS interface on HMI to switch the front rest into manual control 3 Press to open the front rest 4 Turn the knob counterclockwise to its lowest limit 5 Load a bar stock a...

Страница 71: ...nterclockwise to its lowest limit front rest must be open no bar stock in the front rest 4 Unscrew A and B to remove the side cover keep in safe place 5 Manually pull out the V blocks and install anot...

Страница 72: ...liminate oil contamination between the bar feeder and the machine It is actuated only while the pusher bar or the loading flag are in forward motion A flow regulator is included to optimize the air fl...

Страница 73: ...extends in sections to maintain a continuous connection between the GT 326 E and the machine sliding headstock This feature allows the headstock to move forward to make parts without the danger of exp...

Страница 74: ...d with a retraction system which allows the operator to move it away from the lathe The rigidity of the system guarantees a perfect alignment when the bar feeder is in working position Safety switches...

Страница 75: ...non guide bushing Better bar support maintains rpm performance Reduced pusher length outside the bar feeder reduced overhang Safety Reduces or eliminates danger of bar and pusher collet separation in...

Страница 76: ...ng down Due to strength concern the maximum collet size within a guiding channel range is limited by its own wall thickness and therefore the maximum bar diameter is limited To maximize the bar stock...

Страница 77: ...thus improved but in addition the insertion of the bar into the clamping device of the lathe is made much easier The inside diameter of the reduction tubes should be chosen in terms of the diameter o...

Страница 78: ...on occurs pressing the emergency stop button immediately interrupts all functions of the bar feeder The bar feeder will send alarm signal to the lathe and interrupt the lathe if interface is wired acc...

Страница 79: ...eder is in MANUAL mode the LED in the key is ON and the user can operate the bar feeder by function keys To reset the bar feeder from an emergency stop alarm Rightward Move pusher rightward Only avail...

Страница 80: ...will set in the ready position up Close Guiding Channel This key offers two functions 1 When the pusher is at a position shorter than the First Feed position and the bar feeder is in MANUAL mode pres...

Страница 81: ...ON GT 326 E 8 1 2 Text display area Working stage Operating mode Unit R The rest length of bar P Available machining pieces S Speed RPM T Torque 1234 Bar end times cycle Parameters setting Barfeed sta...

Страница 82: ...oder that continuously controls the position of the carrier When the bar feeder is powered down or there is a power failure this position is kept in the memory by the PLC When powering up the pusher p...

Страница 83: ...carried out 1 The 3 phase power to the servo amplifier is interrupted 2 All PLC outputs are interrupted except Y20 input signal of alarm relay R1 3 The alarm AL01 is displayed on HMI screen When the...

Страница 84: ...Cut cycle Let the lathe start machining cycle by the program B In manual mode advance the bar to the Top Cut position Start the lathe AUTOMATIC sequence from main program A B 4 Press and then to swit...

Страница 85: ...e bar stopper in the lathe 2 Close the chuck of the lathe 3 Press and then to switch the bar feeder to AUTOMATIC mode Then switch the lathe to AUTOMATIC mode 1 If Top cut positioning Without turret ne...

Страница 86: ...ers that can be changed while the bar feeder is in AUTOMATIC mode To obtain optimum performance the operator is strongly recommended to read this chapter before making any changes to the parameters 8...

Страница 87: ...m Top cut Top cut position 200mm Front rest opening Front rest opening position 1500mm 2000mm 2600mm 3000mm Auxiliary end of bar Auxiliary end of bar position 1500mm 2000mm 2000mm 2000mm External stab...

Страница 88: ...CYCLE START signal The bar feeder will not stop at this distance during feeding The lathe must place a stopper inside the lathe for positioning Example If the part is 100mm and the cut off tool width...

Страница 89: ...Lathe type Fixed type Swiss type Too short Part length 15mm Too long collet closed Less than part length Max spindle movement of machining a part 15mm Too long collet open Part length 15mm Less than p...

Страница 90: ...0 mm behind the chuck jaws of collet pads of the lathe In automatic cycle a new bar will be loaded in the guiding channel TOP CUT This parameter should be modified if the bar feeder is re installed or...

Страница 91: ...ed in several ways for example for the opening of an external rest The procedure is the same as this for the end of bar setting EXTERNAL STABILIZER OPTION EXTERNAL STABILIZER second anti vibration Def...

Страница 92: ...lathe manual forward and feed on fixed headstock type lathe with chuck opened WITH CLAMPING DEVICE CLOSED For fixed headstock machine Torque applied during machining operations Part setup will influen...

Страница 93: ...tions Bar feeder in manual or stop mode channel open SQ3 ON and pusher at home position SQ2 ON and bar measuring device ready SQ1 ON Press DRY RUN the bar feeder will switch to DRY RUN mode Interface...

Страница 94: ...d by LNS representative Incorrect setup might cause safety hazards and or unexpected malfunction or damage on either bar feeder or lathe Accessing these parameters is password protected Please contact...

Страница 95: ...e pusher when clamping device is closed No Yes No Barfeeder auto safety No Yes No Front rest close at SQ1 front stopper Top cut SQ1 POSITION Pusher retracts dist For spindle inching 50mm FEED RATE TOR...

Страница 96: ...ubject to actual use 10 PLC input A2 is 1 Latched 1 2 Pulsed 11 A4 Signal is 1 Latched 1 2 Pulsed 12 2 pushing forces sliding headstock Pushing force when chuck opens 1 13 R2 while in production cycle...

Страница 97: ...signal is ON when synchronization signal turns ON 1 43 R5 is Defines Output signal Y24 2 44 Lathe s door open Lathe door signal logic setup 1 45 A2 signal Auto cycle signal logic setup Subject to act...

Страница 98: ...it s loaded into the bar feeder First Feed by Loading Flag This movement is called FIRST FEED It is used to locate the bar rear tip at the insertion position The FIRST FEED must be correctly set so th...

Страница 99: ...HEN CLAMPING DEVICE IS CLOSED Defines if the front rest and external stabilizer clamp while the pusher is passing through during automatic mode BARFEED SETUP BARFEEDER AUTO SAFETY This parameter check...

Страница 100: ...SERTION The default value of torque 250 DURING EXTRACTION The default value of torque 250 FEED RATE Defines the feed rate of the pusher movement during these three situations FEED RATE Defines the fee...

Страница 101: ...Top Cut positioning with or without turret help BAR INSERTION CHECK When bar insertion is completed the pusher will move back and forth During this cycle the vise with close to verify if the bar is i...

Страница 102: ...Either A2 or A4 signal is checked During a bar change cycle either one of the signals is required for pushing bar stock to Top Cut position when the chuck of the lathe opens 04 A3 Priority load comma...

Страница 103: ...setup 1 Fixed headstock lathe 2 Sliding headstock lathe 3 Camshaft lathe 09 Push signal from the lathe Refer to INTERFACE24 for related setup 1 Chuck signal A1 and AUTO signal A2 enables the pusher t...

Страница 104: ...shing force is according to PUSHER TORQUE RATE AGAINST THE CUT OFF TOOL 13 R2 while in production cycle Refer to INTERFACE14 15 16 for related setup Defines if R2 signal is On or Off during production...

Страница 105: ...confirm part feedout when M code is connected Refer to the timing chart 3 on 8 6 2 1 17 R3 signal latches at End of Bar Refer to INTERFACE18 19 20 31 32 33 for related setup Defines the type of R3 sig...

Страница 106: ...F 2 R3 signal is a 2 seconds pulses signal Refer to the timing chart 4 on 8 6 2 1 21 R5 ON at Aux EOB position Refer to INTERFACE43 for related setup When the pusher arrives at AUXILIARY END OF BAR po...

Страница 107: ...hart 2 on 8 6 2 1 31 EOB calculated according to part length Refer to INTERFACE17 18 19 20 32 33 for related setup Defines how the End of Bar position is calculated 1 The End of Bar position is calcul...

Страница 108: ...e channel Refer to the timing chart 4 on 8 6 2 1 34 R2 While In Synchronization Ready Defines if R2 signal turns ON when headstock synchronization is enabled 1 R2 signal is OFF 2 R2 signal is pulsed f...

Страница 109: ...rol pusher pushing forward during machining Pushing while chuck opens for feeding and closed for machining are included 1 A4 Push signal lit the lathe commands pushing 2 A4 Push signal lit the lathe c...

Страница 110: ...uck of the lathe to be physically closed or open 74 Device to close Time for the chuck to close 75 Device to open Time for chuck to open NORMAL OPERATION SIMULATION MODE Attention This mode is used fo...

Страница 111: ...8 34 Chapter 8 OPERATION GT 326 E 8 5 2 1 Timing chart reference 1 Start loading signal A3...

Страница 112: ...Chapter 8 OPERATION 8 35 GT 326 E 2 Push signal A4...

Страница 113: ...8 36 Chapter 8 OPERATION GT 326 E 3 Start signal R2 INTERFACE13 INTERFACE14 INTERFACE15 INTERFACE16...

Страница 114: ...Chapter 8 OPERATION 8 37 GT 326 E 4 End of Bar signal R3 INTERFACE17 INTERFACE18 INTERFACE19 INTERFACE20 INTERFACE31 INTERFACE32 INTERFACE33...

Страница 115: ...8 38 Chapter 8 OPERATION GT 326 E...

Страница 116: ...e designed to remind users of the bar feeder status Under the following conditions there will be a warning message but the alarm signal output Y04 R1 of the bar feeder will not send am alarm signal to...

Страница 117: ...se the lathe door Description When the bar feeder is in manual mode main cover is open and the guiding channel is closed Troubleshooting Manually close main access cover Description Bar feeder unable...

Страница 118: ...ode but it doesn t receive the Lathe AUTO signal A2 Note Only applied when INTERFACE24 Automatic signal connected to A2 is set 1 Troubleshooting 1 Switch lathe to AUTO mode 2 If A2 signal is not used...

Страница 119: ...9 4 9 TROUBLESHOOTING GUIDE GT 326 E 9 2 ERROR MESSAGE MAP The following flow chart shows a basic sequence of event that includes the alarms that can occur during production operation bar feeder lathe...

Страница 120: ...contactor K1 is energized and continuously sending signal to PLC input X10 Whenever this circuit is open K1 will de energize and the signal to PLC input contact X10 is OFF Sequence of actions 1 The 2...

Страница 121: ...12 2 when the bar feeder is retracted and both of the retraction safety switches SQ10 and SQ10a are engaged the alarm message will be generated This alarm only applies to bar feeder with optional Z a...

Страница 122: ...nd SQ4 are simultaneously activated or deactivated Troubleshooting 1 Check if the SQ3 or SQ4 switches are defective or misadjusted 2 Press STOP button on HMI to clear the alarm AL07 Guiding Channel Op...

Страница 123: ...ady for feeding the bar to TOP CUT POSITION the switch SQ1 signal does not reset SQ1 OFF Troubleshooting 1 Check if the bar stock is present or for mechanical interference with the bar measuring devic...

Страница 124: ...button on HMI to clear the alarm AL12 Bar Loading Time Elapsed Description The pusher cannot advances the bar stock to TOP CUT POSITION after 20 try outs Troubleshooting 1 Check if the bar feed alignm...

Страница 125: ...rs the pusher moving distance from the time the chuck opens to the time the chuck closes the lathe is currently proceeding machining Once the chuck closes and if the distance is 5 mm shorter than Part...

Страница 126: ...as a stopper 5 Check if End of Bar position is setup correctly 6 Press STOP button on HMI to clear the alarm AL17 Headstock Travel Shorter Than Expected The Pusher Lost The Bar Stock Description The b...

Страница 127: ...o insert the bar stock 2 If BAR INSERT CHECK No and insertion procedure is completed the pusher will move back and forth and the clamping vise will detect the bar stock If no bar is detected the alarm...

Страница 128: ...r feeder 3 Press STOP button on HMI to clear the alarm AL24 Top Cut Positioning Error Description 1 During the positioning of the bar in the insertion position the front of bar already passed the TOP...

Страница 129: ...ck Closed Description During chuck close bar feeder keeps reading the position of pusher If the distance of pusher moving forwards is larger than PART FEEDING Too long collet closed setup the alarm wi...

Страница 130: ...sition 1 00mm but switch SQ2 is OFF this alarm will be generated Troubleshooting 1 Check if the servo motor is defective 2 Check if switch SQ2 is defective of misadjusted 3 Press STOP button on HMI to...

Страница 131: ...it of normal speed AL008 Abnormal pulse control command Input frequency of pulse command exceeds the limit of its allowable setting value AL009 Excessive deviation Position control deviation value exc...

Страница 132: ...27 Motor internal error The setting value of the encoder is in error AL028 Motor internal error The encoder U V W signals are in error AL029 Motor internal error The internal address of the encoder is...

Страница 133: ...ontrol parameter setting error Check if the setting value exceeds the factory default setting Set the setting back to factory default setting and then reset and adjust the parameter setting again Cont...

Страница 134: ...d restart the servo drive Potential Cause Checking Method Corrective Actions Encoder is damage Check Encoder for the damage Repair or replace the motor Encoder is loose Examine the Encoder connector I...

Страница 135: ...verspeed Clearing Method Turn OFF the power supply and restart the servo drive Potential Cause Checking Method Corrective Actions Speed input command is not stable too much fluctuation Use signal dete...

Страница 136: ...nd restart the servo drive Potential Cause Checking Method Corrective Actions The wiring of encoder is in error 1 Check if all wiring is correct 2 Check if the users conduct the wiring by the wiring i...

Страница 137: ...arameter setting and re estimate motor capacity AL015 Forward CCWL limit switch error Clearing Method Turn OFF the power supply and restart the servo drive Potential Cause Checking Method Corrective A...

Страница 138: ...parameter has exceeded the specified range Correct the setting value of the parameter to clear the fault and restart the servo drive 2 If this fault occurs during normal operation it indicates that t...

Страница 139: ...communication error Clearing Method Turn OFF the power supply and restart the servo drive Potential Cause Checking Method Corrective Actions Communication parameter setting is defective Check the comm...

Страница 140: ...overload 1 Check the load condition of the servo motor and drive 2 Check the setting value of P1 56 Check whether the setting value of P1 56 is too small 1 Please refer to the correction actions of A...

Страница 141: ...error does not clear after all the above actions are done please contact your distributor for assistance or contact with Delta AL026 Encoder data error Clearing Method Turn OFF the power supply and re...

Страница 142: ...does not clear after all the above actions are done please contact your distributor for assistance or contact with Delta AL028 Motor internal error Clearing Method Turn OFF the power supply and resta...

Страница 143: ...l cables are placed in separate conduits from the cables connected to R S T and U V W terminals to prevent the interference 3 Please use shielded cables for Encoder wiring 4 If the error does not clea...

Страница 144: ...temperature error Clearing Method Turn OFF the power supply and restart the servo drive Potential Cause Checking Method Corrective Actions Motor is working under temperature over 105 C 221 F Check if...

Страница 145: ...e over 85 C 185 F Check if the environment temperature is too high Try to reduce environment temperature AL099 DSP firmware upgrade Clearing Method Turn OFF the power supply and restart the servo driv...

Страница 146: ...st be perfect It is essential that the alignment of the bar feed system is done in accordance with the instructions indicated in Chapter 3 Setting into operation Spindle length In some cases the lengt...

Страница 147: ...rofiled material It is recommended to install a bushing inside the clamping device with the same inside profile 0 2 mm as the bar The rear of this collet and the front of the bars should be flat Durin...

Страница 148: ...SERVO amplifier 9 6 4 Mechanics Rotating sleeves In order to guarantee the correct operation of the bar feed system the rotating sleeve must function perfectly Although the construction of the sleeve...

Страница 149: ...9 34 9 TROUBLESHOOTING GUIDE GT 326 E...

Страница 150: ...M JUMP SUB PROGRAM TURRET TO FEED IN POSITION N TURRET HOME N COLLET OPEN M CODE DWELL LOAD N TURRET TO FEED OUT POSITION N CLOSE COLLET N END OF BAR CHECK PROGRAM JUMP N START SPINDLE N CLOSE COLLET...

Страница 151: ...photocopied duly filled out and sent to LNS or to your nearest LNS Representative Agent Company name Person in charge Address ZIP City Country Phone Fax Type of device Serial number Qty Ordering no De...

Страница 152: ...Chapter 10 APPENDICES 10 3 GT 326 E APPENDIX C ADDRESS LNS LNS Main Offices LNS Europe www lns europe com LNS America www lns america com LNS Asia www lns asia com...

Страница 153: ...10 4 Chapter 10 APPENDICES GT 326 E...

Страница 154: ...FKLQH 1 7 1 ZZZ OQV JURXS FRP 7 J 5 1 66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG...

Страница 155: ...H 1 7 1 ZZZ OQV JURXS FRP 7 J 5 1 66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG KDV...

Страница 156: ...H 1 7 1 ZZZ OQV JURXS FRP 7 J 5 1 66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG KDV...

Страница 157: ...H 1 7 1 ZZZ OQV JURXS FRP 7 J 5 1 66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG KDV...

Страница 158: ...DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG KDV WKH ULJKW ZLWKRXW RXU ZULWWHQ DXWKR...

Страница 159: ...OQV JURXS FRP 7 J 5 1 66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG KDV WKH ULJKW Z...

Страница 160: ...RP 7 J 5 1 66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG KDV WKH ULJKW ZLWKRXW RXU...

Страница 161: ...0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG KDV WKH ULJKW ZLWKRXW RXU ZULWWHQ DXWKRUL DWLRQ WR...

Страница 162: ...FRP 7 J 5 1 66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG KDV WKH ULJKW ZLWKRXW RXU...

Страница 163: ...RP 7 J 5 1 66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG KDV WKH ULJKW ZLWKRXW RXU...

Страница 164: ...1 ZZZ OQV JURXS FRP 7 J 5 1 66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG KDV WKH...

Страница 165: ...VH 1 7 1 ZZZ OQV JURXS FRP 7 J 5 1 66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG KD...

Страница 166: ...RP 7 J 5 1 66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG KDV WKH ULJKW ZLWKRXW RXU...

Страница 167: ...JURXS FRP 7 J 5 1 66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG KDV WKH ULJKW ZLWKR...

Страница 168: ...JURXS FRP 7 J 5 1 66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG KDV WKH ULJKW ZLWK...

Страница 169: ...H 1 7 1 ZZZ OQV JURXS FRP 7 J 5 1 66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG KDV...

Страница 170: ...VH 1 7 1 ZZZ OQV JURXS FRP 7 J 5 1 66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG KD...

Страница 171: ...JURXS FRP 7 J 5 1 66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG KDV WKH ULJKW ZLWKR...

Страница 172: ...JURXS FRP 7 J 5 1 66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG KDV WKH ULJKW ZLWK...

Страница 173: ...JURXS FRP 7 J 5 1 66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG KDV WKH ULJKW ZLWK...

Страница 174: ...JURXS FRP 7 J 5 1 66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG KDV WKH ULJKW ZLWK...

Страница 175: ...RP 7 J 5 1 66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG KDV WKH ULJKW ZLWKRXW RXU...

Страница 176: ...XS FRP 7 J 5 1 66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG KDV WKH ULJKW ZLWKRXW...

Страница 177: ...HW 1 7 1 ZZZ OQV JURXS FRP 7 J 5 1 66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG KD...

Страница 178: ...HW 1 7 1 ZZZ OQV JURXS FRP 7 J 5 1 66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG KD...

Страница 179: ...66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG KDV WKH ULJKW ZLWKRXW RXU ZULWWHQ DXW...

Страница 180: ...1 ULYH 1 7 1 ZZZ OQV JURXS FRP 7 J 5 1 66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RE...

Страница 181: ...6B ULYH 1 7 1 ZZZ OQV JURXS FRP 7 J 5 1 66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RE...

Страница 182: ...DVKHU 1 ULYH 1 7 1 ZZZ OQV JURXS FRP 7 J 5 1 66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FD...

Страница 183: ...PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG KDV WKH ULJKW ZLWKRXW RXU ZULWWHQ DXWKRUL DW...

Страница 184: ...FRP 7 J 5 1 66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG KDV WKH ULJKW ZLWKRXW RX...

Страница 185: ...GT 326 E ALPHA 326 GT 326 E 1 5 A 32...

Страница 186: ...GT 326 E ALPHA 326 GT 326 E 2 5 A 33...

Страница 187: ...GT 326 E GT 326 E 3 5 A 34...

Страница 188: ...GT 326 E ALPHA 326 GT 326 E 16 5 4 A 35...

Страница 189: ...GT 326 E ALPHA 326 GT 326 E 26 5 5 A 36...

Страница 190: ...GT 326 E ALPHA 326 GT 326 E 1 5 A 37...

Страница 191: ...GT 326 E ALPHA 326 GT 326 E 2 5 A 38...

Страница 192: ...GT 326 E ALPHA 326 GT 326 E 3 5 A 39...

Страница 193: ...GT 326 E ALPHA 326 GT 326 E 5 4 6 A 40...

Страница 194: ...GT 326 E ALPHA 326 GT 326 E 5 5 6 A 41...

Страница 195: ...GT 326 E ALPHA 326 GT 326 E 1 5 A 42...

Страница 196: ...GT 326 E ALPHA 326 GT 326 E 2 5 A 43...

Страница 197: ...GT 326 E ALPHA 326 GT 326 E 3 5 A 44...

Страница 198: ...GT 326 E ALPHA 326 GT 326 E 5 4 6 A 45...

Страница 199: ...GT 326 E ALPHA 326 GT 326 E 5 5 6 A 46...

Страница 200: ...GT 326 E ALPHA 326 GT 326 E 1 5 A 47...

Страница 201: ...GT 326 E ALPHA 326 GT 326 E 2 5 A 48...

Страница 202: ...GT 326 E ALPHA 326 GT 326 E 3 5 A 49...

Страница 203: ...GT 326 E ALPHA 326 GT 326 E 5 4 6 A 50...

Страница 204: ...GT 326 E ALPHA 326 GT 326 E 5 5 6 A 51...

Страница 205: ...URQL DWLRQ 1 7 1 ZZZ OQV JURXS FRP 7 J 5 1 66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH...

Страница 206: ...S FRP 7 J 5 1 66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG KDV WKH ULJKW ZLWKRXW R...

Страница 207: ...5 1 66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG KDV WKH ULJKW ZLWKRXW RXU ZULWWH...

Страница 208: ...ZZZ OQV JURXS FRP 7 J 5 1 66 DVW PRGLI 0 7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG KDV WKH UL...

Страница 209: ...7 5 685 7 5 1 6 6 5 37 21 2XU GUDZLQJV GHVLJQV DQG WKHLU DQQH HV UHPDLQ RXU VROH SURSHUW DQG ZH FRQILGH WKHP WR WKH DGGUHVVHH V SHUVRQDO FDUH 1RERG KDV WKH ULJKW ZLWKRXW RXU ZULWWHQ DXWKRUL DWLRQ WR F...

Страница 210: ...GT 326 ALPHA 326 GT 326 E A 57...

Страница 211: ...GT 326 ALPHA 326 GT 326 E A 58...

Страница 212: ...GT 326 ALPHA 326 GT 326 E A 59...

Страница 213: ...GT 326 ALPHA 326 GT 326 E A 60...

Страница 214: ...GT 326 ALPHA 326 GT 326 E A 61...

Страница 215: ...GT 326 GT 326 E A 62...

Страница 216: ...GT 326 ALPHA 326 GT 326 E A 63...

Страница 217: ...GT 326 E A 64...

Страница 218: ...Item Qty Part No Descr 1 2 ST3300700 2 1 D6430200 14 17 3 1 D6430300 22 24 4 1 D6430600 L 5 1 SN350300 30 6 1 C15120100 7 8 1 9 1 10 8 D6332300 11 8 Large Washer_AI 3 4 4 GT 326 E A 65...

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Содержание GT 326-E

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Содержание GT 326-E

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