LNS Alpha 552 Instruction Manual
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LNS Alpha 552 Instruction Manual

Bar feeder
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Bar Feeding Systems
ENG
Instruction Manual
LNS America
4621 East Tech Drive
Cincinnati, Ohio 45245
06-2013

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Summary of Contents for LNS Alpha 552

  • Page 1 Bar Feeding Systems Instruction Manual LNS America 4621 East Tech Drive Cincinnati, Ohio 45245 06-2013...
  • Page 2 ALPHA 552...

  • Page 3: Table Of Contents

    3. ELECTRICAL DIAGRAMS 4-13 4. INTERFACE 4-18 CHAPTER 5 PNEUMATICS 1. PNEUMATICAL EQUIPMENT 2. F.R.L. UNIT 3. PNEUMATIC VALVE BATTERY 4. MAINTENANCE 5. PNEUMATIC DIAGRAMS CHAPTER 6 HYDRAULICS 1. HYDRAULIC EQUIPMENT 2. DESCRIPTION OF THE ELEMENTS 3. MAINTENANCE ALPHA 552...
  • Page 4 4. AUTOMATIC SEQUENCE 5. OPERATION PARAMETERS CHAPTER 9 MALFUNCTIONS 1. ALARMS 2. FACTORS AFFECTING PERFORMANCE 9-11 3. MAINTENANCE 9-13 CHAPTER 10 APPENDICES 10-1 APPENDIX A: PROGRAMMING EXAMPLE 10-2 APPENDIX B: ORDERING FORM 10-3 APPENDIX D: ADRESS LNS 10-4 ALPHA 552...

  • Page 5: Chapter 1 Basic Notions

    CHAPTER 1: BASIC NOTIONS CHAPTER 1 BASIC NOTIONS ALPHA 552...

  • Page 6: Structure

    (see chapter *) or (see point *). 1.2. Captions Whenever possible, the reference numbers contained in the instruction manual are shown with the LNS ordering number of the indicated element. To make it easier to place an order of supplies, a form has been included in the annex at the end of this manual.

  • Page 7: Rights

    LNS SA. LNS SA and its subsidiaries cannot be held responsible for damage and problems arising from the use of options and products other than LNS products, or products approved by LNS SA.

  • Page 8: Declaration Of Compliance

    Suisse Description of the machine : BARFEED Type : ALPHA 552 Serial number : N/A The following essential requirements of the machine directive 2006/42/EC are applied and fulfilled : 1.1.2, 1.1.3, 1.1.5, 1.1.6, 1.2.1, 1.2.2, 1.2.3, 1.2.4, 1.2.5, 1.2.6, 1.3.1, 1.3.2, 1.3.3, 1.3.4, 1.3.5, 1.3.6, 1.3.7, 1.3.8, 1.3.9, 1.4.1, 1.4.2, 1.4.3, 1.5.1, 1.5.3, 1.5.4, 1.5.8, 1.5.9, 1.6.2, 1.6.3, 1.7.1, 1.7.2, 1.7.3,...

  • Page 9: Safety Instructions

    • If it is necessary to move the barfeeder once • It is strictly prohibited to jump wire or remove it has been originally installed, do not reinstall it before first contacting LNS or its circuit breakers, main switches, local representative.
  • Page 10 CHAPTER 1: BASIC NOTIONS ALPHA 552...

  • Page 11: Chapter 2 Technical Data

    CHAPTER 2: TECHNICAL DATA CHAPTER 2 TECHNICAL DATA ALPHA 552...

  • Page 12: Characteristics

    (square: 4 mm) (profiled: on flats) (hexa: 5 mm) (hexa: 5 mm) (hexa: 5 mm) ALPHA 538: 38 mm Maximum diameter ALPHA 552: 52 mm Minimum bar stock length 1000mm 3200 mm 3800 mm 4200 mm Maximum bar stock length...
  • Page 13 CHAPTER 2: TECHNICAL DATA ALPHA 552...

  • Page 14: Layout Of The Elements

    Chain drive with Smart Power Booster Remnant retract device Hydraulic tank with remnant tray Main switch Electrical cabinet Main access cover Pneumatic front rest Loading ramp Bar length measuring device (not visible) Front stand Retraction system Rear stand Pneumatic assembly ALPHA 552...

  • Page 15: Chapter 3 Setting Into Operation

    CHAPTER 3: SETTING INTO OPERATION CHAPTER 3 SETTING INTO OPERATION ALPHA 552...

  • Page 16: Transportation

    Please read the safety precautions described at the beginning of this manual before handling the following devices. Depending on its destination, the ALPHA 552 barfeed system may be delivered either on a pallet, or packed in a wooden crate. When transported by sea or by air, the second solution is recommended.
  • Page 17 CHAPTER 3: SETTING INTO OPERATION From this point on, the barfeed system is unpacked in the same way as when delivered on a pallet. The ALPHA 552 barfeed system is always delivered as follows: • A pusher and guiding elements set is mounted in the barfeed system (A). Depending on the purchase order, other sets may be delivered in a separate box.
  • Page 18 CHAPTER 3: SETTING INTO OPERATION Preparation for mounting For mounting and installing the barfeed system, it is advisable to contact LNS or one of its agents. The latter cannot be held responsible for any malfunction resulting from an incorrect installation in which they did not take part.

  • Page 19: Mounting

    CHAPTER 3: SETTING INTO OPERATION 2. MOUNTING The ALPHA 552 barfeed system is delivered completely assembled. Because of this, it is possible to proceed directly to its alignment when in place behind the lathe. Alignment Before proceeding with the alignment of the barfeed system, ensure that the lathe is stable and preferably levelled.
  • Page 20 8 anchorage bolts (B) must be furnished by the client (min. M10 x 100 mm / 1/2" x 4"). • Once the anchoring bolts are tightened, check the alignment again, and correct it if necessary. • Tighten the nuts of the levelling screws. • Remove the 4 (2+2) screws (C). ALPHA 552...

  • Page 21: Safety Analysis For The Correct Incorporation

    ALPHA 552 is integrated; its association with other equipment, People’s interaction with the machine. • Evaluate and assess the risks associated by using the machine ALPHA 552: programming risks operation risks risks of use maintenance risks •...

  • Page 22: Electrical Connections

    Transformer T1 Hydraulic pump motor The LNS barfeed systems are equipped with their own thermal protection systems (breakers, thermal relays and fuses, etc.). The power supply for the barfeed system should be connected to the output of a breaker mounted in the electrical control box of the lathe (10 A max.).

  • Page 23: Pneumatic Connections

    To increase the pressure, turn it clockwise. To decrease it, turn it in the opposite direction. The operational pressure should be set at 5 bar. When the settings are done, lock the adjuster by pushing it downward. ALPHA 552...

  • Page 24: Hydraulic Connections

    CHAPTER 3: SETTING INTO OPERATION 6. HYDRAULIC CONNECTIONS The guiding concept of the ALPHA 552 barfeed system consists mainly in maintaining the bar suspended in an oil bath. This reduces friction of the turning bar stock, and dampens the vibration generated by the bar stock.

  • Page 25: Chapter 4 Electrics

    CHAPTER 4: ELECTRICS CHAPTER 4 ELECTRICS ALPHA 552...

  • Page 26: Electrical Equipment

    Please read the safety instructions provided at the beginning of this manual before handling the following devices. Particular attention should be given to the handling of electrical elements because of risks of electrocution. In case of possible electrical malfunctions, it is advisable to contact LNS or their local representative. 1.1. Description The electrical parts of the barfeed system, as well as the diagrams representing them, conform to the CEI 204-1 EN 607 international electrical codes.
  • Page 27 CHAPTER 4: ELECTRICS 1.2. Layout of the electrical elements on the barfeed system SQ14/SQ15/SQ16/SQ17 SQ11 SQ3/SQ4 SQ17 SQ18 SQ20/M7 M1/SP2 SQ12/SQ13 SQ10 ALPHA 552...
  • Page 28 Front rest reference (option) SQ 13 B18120401 Front rest pulse signal (option) SQ 14 C11111100 Materiel inserting (option) SQ 15 C11111100 Inserting clutch on (option) SQ 16 C11111100 Material extraction (option) SQ 17 C11111100 Material inserting (option) (*) See following pages ALPHA 552...
  • Page 29 Particular attention should be given to the handling of electrical elements because of risks of electrocution. In case of possible electrical malfunctions, it is advisable to contact LNS or their local representative. It is strictly prohibited to make adjustments as long as the barfeed system is under electrical power.

  • Page 30: Electrical Cabinet

    B66000007 Safety restart relay (CE version) 4.932 Hydraulic pump motor M1 relay B19110100 Circuit breaker B77000012 Main circuit breaker 2,5 to 4 A B55000003 Main disconnect switch Transformer 1-ph (Optional, not shown here) B77000040 24 VDC Power supply ALPHA 552...
  • Page 31 (C). TEST At the factory, the breaking current is set to 2.5 amperes. Designation Description Power in connecting terminal Breaking current setup Release button Power out connecting terminal Test button ALPHA 552...
  • Page 32 The incoming power must be connected to the Primary Terminal Block. Use the contacts corresponding to the supplied power (346V AC to 440V AC, see drawing below). The outgoing power is always connected to the 220VAC terminals of the Secondary Terminal Block. Secondary terminal block Primary terminal block ALPHA 552...
  • Page 33 220V AC input terminals 24V DC output terminals 2.2.6. PCB (Printed Circuit Board) PCB is a board with circuit printed and electrical components welded on the surface. It offers sockets and terminals for electrical components like relays, cables and fuses. ALPHA 552...
  • Page 34 DO NOT TOUCH, MAY BE VERY HOT AND CAUSE SERIOUS PERSONNEL INJURY. I/O interface (CN1) Used to connect host controller (PLC) or control I/O signal. Serial communication interface (CN2) Used to connect other controllers Ground terminal ALPHA 552...
  • Page 35 The program loaded into the PLC manages this information. The PLC then distributes the interface signals, controls the SERVO drives as well as the pneumatic valves, and displays the appropriate messages on the remote control station. ALPHA 552...
  • Page 36 (closings front rest (option) Stop button (remote) Auto ready button (remote) Auto start button (remote) Forward button (remote) Reverse button (remote) Open button (remote) Close button (remote) <Not in use> Clamping device signal Lathe in auto cycle Feed order Push order ALPHA 552...

  • Page 37: Electrical Diagrams

    CHAPTER 4: ELECTRICS 4-13 3. ELECTRICAL DIAGRAMS ALPHA 552...
  • Page 38 4-14 CHAPTER 4: ELECTRICS ALPHA 552...
  • Page 39 CHAPTER 4: ELECTRICS 4-15 ALPHA 552...
  • Page 40 4-16 CHAPTER 4: ELECTRICS ALPHA 552...
  • Page 41 CHAPTER 4: ELECTRICS 4-17 ALPHA 552...

  • Page 42: Interface

    The voltage of the barfeed system is indicated on the identification plate (A). 4.1. Description The interface cable(s), between the barfeed system and the lathe, are provided by LNS. The diagram for the interface corresponding to your device, essential when making the electrical connection, is located inside the electrical cabinet.
  • Page 43 Transformer T1 Hydraulic pump motor The LNS barfeed systems are equipped with their own thermal protection systems (breakers, thermal relays and fuses, etc.). The power supply for the barfeed system should be connected to the output of a breaker mounted in the electrical control box of the lathe (10 A max.).
  • Page 44 For safety reason, this signal should bring to a stop all of the axis movements of the lathe as well as the rotation of the spindle. When the barfeed system is in alarm mode, the feeding pusher control signal should also de- energize. ALPHA 552...
  • Page 45 Emergency Stop button are available for connection in the Emergency Stop circuit of the lathe. 4.2.4. Options The options described below are an integral part of the standard equipment of the LNS barfeed systems. These signals, however, are not required for the proper operation of the devices, or the safety locking for protecting persons and materials.
  • Page 46 4-22 CHAPTER 4: ELECTRICS ALPHA 552...

  • Page 47: Chapter 5 Pneumatics

    CHAPTER 5: PNEUMATICS CHAPTER 5 PNEUMATICS ALPHA 552...

  • Page 48: Pneumatical Equipment

    1. PNEUMATICAL EQUIPMENT Please read the safety instructions provided at the beginning of this manual before handling the following devices. 1.1. Description The following automatic movements of the ALPHA 552 barfeed system are done via pneumatic elements, namely: • Bar stock selection •...

  • Page 49: Unit

    Unlock the adjusting knob by pulling it upward. To increase the pressure, turn it clockwise. To decrease it, turn it in the opposite direction. The operational pressure should be set at 5 bar. When the settings are done, lock the adjuster by pushing it downward. ALPHA 552...

  • Page 50: Pneumatic Valve Battery

    Guiding Channel locking C11110100 Material clamping C11110100 Material loading (bar selection) C11110100 Material dropping fingers C11110100 Air blast C11110100 Front rest opening/closing C11110100 Smart booster clutch engage/disengage YV10 C11110100 Smart booster bar insert/extract YV11 <Reserved> C11121400 Air pressure switch ALPHA 552...
  • Page 51 1. Set the base pressure on screw A. 2. Set the difference range on screw B. 3.3.2. Valves Contact your LNS agent for further safety information before proceeding to any operation on the valves. By pressing the button A, the cylinders can be activated manually.

  • Page 52: Maintenance

    For the best performance, the oil should drop every cylinder operation. Adjust the fluent with auxiliary of channel open button. Let the oil drop once after pressing the “channel open” button for 10 times. • Connect the air inlet tube and turn air source on. ALPHA 552...

  • Page 53: Pneumatic Diagrams

    CHAPTER 5: PNEUMATICS 5. PNEUMATIC DIAGRAMS ALPHA 552...
  • Page 54 CHAPTER 5: PNEUMATICS ALPHA 552...
  • Page 55 CHAPTER 5: PNEUMATICS ALPHA 552...
  • Page 56 5-10 CHAPTER 5: PNEUMATICS ALPHA 552...

  • Page 57: Chapter 6 Hydraulics

    CHAPTER 6: HYDRAULICS CHAPTER 6 HYDRAULICS ALPHA 552...

  • Page 58: Hydraulic Equipment

    1.1. Description The guiding concept of the ALPHA 552 barfeed system consists mainly in maintaining the bar suspended in an oil bath. The hydraulic oil is contained in the machine itself. Aspirated by a pump motor, it is injected into the front rest and the guiding blocks.

  • Page 59: Description Of The Elements

    ISO 100 100 mm2/s (cSt) at 40°C DIN 68 8°E to 50°C Consult your supplier who will recommend the correct oil for you. A thicker oil (ISO 150) may, in certain cases, produce better results when guiding profiled bars. ALPHA 552...

  • Page 60: Maintenance

    • Refill new oil into the bar feed system until the indicator shows oil level at H (about 25 litres needed). Confirm there is no leaking from the plug. • Install the remnant tray back. Dispose of waste used oil properly in an environmentally friendly way, and according to your local regulation. ALPHA 552...

  • Page 61: Chapter 7 General Description

    CHAPTER 7: GENERAL DESCRIPTION CHAPTER 7 GENERAL DESCRIPTION ALPHA 552...

  • Page 62: Bar Magazine

    Please read the safety instructions provided at the beginning of this manual before handling the following devices. 1.1. Description The barfeed ALPHA 552 is equipped with an internal, gravity- fed loading ramp. Depending on the length of the barfeed system (3M, 12', 4M), the bar magazine may include six or seven supports.
  • Page 63 (B) can be moved. 2. Move the setup handle (B) to the desired diameter range, corresponding to the bar stock diameter to be loaded. 3. Lock the side handle (A) completely, so that the setup handle (B) cannot be moved. ALPHA 552...

  • Page 64: Guiding Elements

    Article No Description Upper guiding element "Quick Change" holding system for the upper guiding elements Oil supply Lower guiding element Locking system Front rest guiding elements* (*) Some elements are explained in more details in the following paragraphs. ALPHA 552...
  • Page 65 Left to Right: (4x) X51.31.A300A.xx (8x) X51.31.A002A.x Right to Left: 042.31.014/xx X51.31.A301A.xx Left to Right: (6x) (2x) (2x) X51.31.A302A.xx (10x) X51.31.A002A.x Right to Left: X51.31.A003A.xx 042.31.014/xx X51.07.A003A.xx X51.31.A303A.xx Left to Right: (7x) X51.31.A304A.xx (11x) X51.31.A002A.x Right to Left: 042.31.014/xx X51.31.A305A.xx ALPHA 552...
  • Page 66 Mount the new elements by following the #4 in reverse order (C, B, A), the flag, the pusher and the pusher supports. Pay attention to guiding elements direction (not symm etric) Close the guiding zone by pressing on the remote control. Press to move the pusher backward until the flag is in reference position, fully backwards. ALPHA 552...

  • Page 67: Pusher

    Depending on the spindle length, 2 pusher lengths are available: Pusher length Useable length (LP) ±1 (Lu) ±1 Pusher version Cone Collet Cone Collet Standard 1596 mm 1554 mm 1220 mm 1178 mm Long 1876 mm 1834 mm 1500 mm 1458 mm ALPHA 552...
  • Page 68 Depending on the diameter of the bars to be guided, choose the appropriate diameter of the guiding elements; assemble the pusher according to the chart below. Important: The performance of the guidance may be determined by the clearance between the bar diameter and the guiding elements. ALPHA 552...
  • Page 69 052.015.484 014.021.013 D/Av : 052.015.154 015.15.053/42 015.15.053/48 40.5 G/Av : 052.015.094 052.015.514 014.021.013 D/Av : 052.015.154 015.15.053/xx 015.15.053/50 G/Av : 052.015.094 052.015.534 014.021.013 D/Av : 052.015.154 015.15.053/45 015.15.053/52 47.6 G/Av : 052.015.094 052.015.554 014.021.013 D/Av : 052.015.154 015.15.053/xx ALPHA 552...
  • Page 70 052.015.1574 014.021.013 D/Av : 052.015.154 015.15.053/42 015.15.053/48 40.5 G/Av : 052.015.094 052.015.1604 014.021.013 D/Av : 052.015.154 015.15.053/xx 015.15.053/50 G/Av : 052.015.094 052.015.1624 014.021.013 D/Av : 052.015.154 015.15.053/45 015.15.053/52 47.6 G/Av : 052.015.094 052.015.1644 014.021.013 D/Av : 052.015.154 015.15.053/xx ALPHA 552...
  • Page 71 G/Av : 052.015.094 052.015.484 014.021.013 D/Av : 052.015.154 052.15.1014/45 052.15.424/48 G/Av : 052.015.094 052.015.514 014.021.013 D/Av : 052.015.154 052.15.1014/48 052.15.424/50 G/Av : 052.015.094 052.015.534 014.021.013 D/Av : 052.015.154 052.15.1014/50 052.15.424/52 G/Av : 052.015.094 014.021.013 052.015.554 D/Av : 052.015.154 052.15.1014/52 ALPHA 552...
  • Page 72 G/Av : 052.015.094 052.015.1594 014.021.013 D/Av : 052.015.154 052.15.1014/47 052.15.424/48 G/Av : 052.015.094 052.015.1604 014.021.013 D/Av : 052.015.154 052.15.1014/48 052.15.424/50 G/Av : 052.015.094 052.015.1624 014.021.013 D/Av : 052.015.154 052.15.1014/50 052.15.424/52 G/Av : 052.015.094 014.021.013 052.015.1644 D/Av : 052.015.154 052.15.1014/52 ALPHA 552...
  • Page 73 Matching reduction tubes are mounted inside of the telescopic tube to guide the bar and the pusher. Stretched Retracted Article No Retracted length Maximum Stroke 042.037.013 178mm 384mm 042.037.063 233mm 549mm ALPHA 552...

  • Page 74: S Synchronization

    5. 3S SYNCHRONIZATION 5.1. Description The barfeed ALPHA 552 uses an electronic synchronization that is directly connected to the lathe to measure the movements of the sliding headstock and replicate them to the pusher. This prevents the small bar stock to be bent during the spindle movements.

  • Page 75: Chain Drive

    It is possible that after a certain amount of use, the Chain (B) needs to be tightened. Should the Chain tension need adjustment, make sure that while adjusting, the Chain remains under tension in order not to lose the reference point. Should the reference point be lost, call for service assistance. ALPHA 552...
  • Page 76 • With a torque wrench, apply a torque on the side screw (C) according to following chart). Chain tension 0.5 Nm 0.5 Nm 0.5 Nm • When done, tighten the lock screws (A) of the adjusting bearing (B). ALPHA 552...

  • Page 77: Remnant Extraction System

    Independently of the material, the diameter, or the bar profile, the clamping jaws are invariably the same and do not require any adjustment. Ø 52 mm Ø 5 mm The vise of the ALPHA 552 barfeed system allows the extraction of remnants of from 90mm to 400 mm long. 7.2. Layout of the elements Designation Article No.
  • Page 78 The clamping blades (see above) must be replaced when worn out. To do this: Unscrew the 4 fastening screws and remove the worn out clamping blades (A). Install the new blade according to the drawing below, and secure them with the fastening screws ALPHA 552...

  • Page 79: Pneumatic Front Rest

    A cover (A) protects the mechanism, and an oil pan (D) collects the oil. 8.2. Layout of the elements Designation Article No Description Cover Air blast 2 Guiding elements Pneumatic cylinder Oil pan Setting of the front rest opening ALPHA 552...
  • Page 80 (Parameters →User (F0) → Functions (F3) → PgDn/Down, activate function (F0). Now you can easily open and close the front rest by pressing “open channel” or “close channel” keys to set up the screw (F on page 7-17). ALPHA 552...

  • Page 81: Retraction Device (Option)

    To facilitate these tasks, the ALPHA 552 can be equipped with a retraction system, which allows the operator to move the barfeeder. The rigidity of the system guarantees a perfect alignment when the barfeed system is in working position.
  • Page 82 7-22 CHAPTER 7: GENERAL DESCRIPTION ALPHA 552...

  • Page 83: Chapter 8 Operation

    CHAPTER 8: OPERATION CHAPTER 8 OPERATION ALPHA 552...

  • Page 84: Controls

    CHAPTER 8: OPERATION 1. CONTROLS 1.1. Remote control The remote control offers a touch screen display and buttons for operating the bar feed system when it’s in MANUAL mode. 1.2. Display ALPHA 552...
  • Page 85 NOT at home position. • the channel is open, the pusher is at home position and the measurement device in upper position (sensor SQ1 ON). Rightward Move pusher rightward. Only available when the barfeed system is in MANUAL mode. ALPHA 552...
  • Page 86 • Channel close and the pusher charges forward for insertion. To operate this button, the following conditions must be fulfilled: • The barfeed system is in MANUAL mode • The pusher is at home position (sensor SQ2 ON) ALPHA 552...

  • Page 87: Powering On

    CHAPTER 8: OPERATION 2. POWERING ON The motor of the ALPHA 552 barfeed system is equipped with a built-in absolute encoder that continuously controls the position of the carrier. When the barfeed system is powered down or there is a power failure, this position is kept in the memory by the PLC.

  • Page 88: Emergency Stop Button

    When the emergency situation is fixed, release the emergency stop button and press the manual key on the remote control to restart the barfeed system. Emergency stop button on the cabinet STP1 INTERRUPTION RESET Emergency stop button on the remote control STP2 INTERRUPTION RESET ALPHA 552...

  • Page 89: Automatic Sequence

    CHAPTER 8: OPERATION 4. AUTOMATIC SEQUENCE The ALPHA 552 barfeed system could be switched into AUTOMATIC mode at two timings. 4.1. Starting a new machining Warning: Conditions must be fulfilled: 1. The lathe is not in AUTOMATIC mode. 2. The lathe chuck is open.

  • Page 90: Operation Parameters

    The lathe must place a stopper inside the lathe for positioning. Example: If the part is 100mm and the cut off tool width is 3mm. The value entered here is 100+3=103. ALPHA 552...
  • Page 91 This parameter have to be deactivated if a stopper is used to positioning the barstock. 5.3. Application parameters Application: Part feed out with turret Defines if the lathe turret waits in position or follows the bar stock displacement during feeding operation. ALPHA 552...
  • Page 92 This positioning corresponds to a value (Z) programmed by the operator, which is equal to the distance between the measuring cell and the position of the material in the lathe clamping device. With this system, the setting is the same for any bar length. ALPHA 552...
  • Page 93 The procedure is the same as this for the end of bar setting. 5.5. torque parameters Torque: Torque values as described. 5.6. Language parameter Language Allows the user to choose the barfeed HMI language. ALPHA 552...
  • Page 94 Misc: Unit Allows to choose working units. Misc: Functions Unload bar stock, Dry run and front rest setup functions are available on this screen. Misc: Function – Unload barstock Unload bar stock function Misc: Dry Run Dry run function ALPHA 552...
  • Page 95 The hydraulic pump continue to supply oil to the guiding channel. Front rest closed on pusher Only with fixed headstock lathe! Close the front rest on the pusher during machining. Front rest opening is synchronized with lathe clamping device opening. This parameter reduces vibrations. ALPHA 552...
  • Page 96 Without bar stock Pusher feed rate without bar stock With clamping device closed Pusher torque with clamping device closed SERVICE: Torque & feed rate 2 Default values insertion/exctraction: 100% Default value Booster servo: 300% SERVICE: Feed rate Feed rate values. ALPHA 552...
  • Page 97 PI18: R3 turns on at EOB and turns off at Loading Start / Clamping Opening PI45: A2 signal NC/NO PI19: R3 turns on at EOB and turns off at Loading Start / in top cut position PI46: A4 signal NC/NO ALPHA 552...
  • Page 98 Additional inputs for specific functions. SERVICE: additional I/O module Additional outputs for specific functions. SERVICE: Mode Working mode Conventional mode for machining Simulation Only for shows. Simulate machining process without bar stock. Test interface mode Cycle to test the interface. ALPHA 552...
  • Page 99 HELP: Software versions Shows PLC and HMI installed software versions. HELP: Interface signals Shows signals and their status. Grey = not active Red = active HELP: Inputs Shows Inputs and their status. Grey = not active Red = active ALPHA 552...
  • Page 100 8-18 CHAPTER 8: OPERATION HELP: Outputs Shows Outputs and their status. Grey = not active Red = active HELP: End of bar Cycles Number of EOB cycle. ALPHA 552...

  • Page 101: Chapter 9 Malfunctions

    CHAPTER 9: MALFUNCTIONS CHAPTER 9 MALFUNCTIONS ALPHA 552...

  • Page 102: Alarms

    Solutions Put back the bar feeder in working position. Check the SQ10 switch. Press the STOP button on the remote control to reset the alarm. AL04: Oil pressure failure! ALPHA 552...
  • Page 103 (I1 – SQ3). The problem occurs if the switch SQ3 is defective or misadjusted or if the opening mechanism has a malfunction. Solutions Check the switch SQ3. Check the opening mechanism. Press the STOP button on the remote control to reset the alarm. ALPHA 552...
  • Page 104 Le PLC has not received the signal clamp closing A1 or the relay R2 is defective. Solutions Check the relay R2 Check the wiring of the interface. Check the programmation of the lathe. AL12: Bar loading time elapsed! ALPHA 552...
  • Page 105 Press the STOP button on the remote control to reset the alarm. Remove the bar out of the spindle. Start the top-cut cycle again. If the problem persists, please contact LNS SA. AL13: Part feed out time elapsed! Description This alarm is generated when the bar feeder has not received any clamping device closing signal within the determined timeframe (env.
  • Page 106 (maybe chips fell underneath the guiding channels). If the problem persists please contact LNS SA for further information. AL18: The pusher lost The barstock while moving to its home position!
  • Page 107 Check that the extraction device jaws are not broken. Check the adjustment of SQ5, the switch should only activate when no bar is present in the collet of the bar feed. Contact LNS SA for further information. AL21: Bar magazine empty! Description This alarm is generated when no material is detected in the guidance zone.
  • Page 108 Solutions Check that there’s no mechanical problem and check the SQ15 probe. AL31: Default clutch booster during decoupling Description Default during decoupling. SQ14 signal is missing. Solutions Check that there’s no mechanical problem and check the SQ14 probe. ALPHA 552...
  • Page 109 Check that the extraction device jaws are not broken. Check the adjustment of SQ5, the switch should only activate when no bar is present in the collet of the bar feed. Contact LNS SA. for further information. AL34: Left empty...
  • Page 110 Verify the alignment between the lathe and the bar feeder. This may slightly vary if one or both machines have not been anchored to the ground. If the problem persists, please contact LNS SA. AL40: Servo drive alarm Description The « servo drive alarm » alarm is generated whenever the servo drive fall in error.

  • Page 111: Factors Affecting Performance

    It is, therefore, highly recommended to install reduction liner inside the spindle as indicated in the start-up manual. ALPHA 552...
  • Page 112 In general, the difficulty increases with the specific weight of the bar. Steel bars are relatively easy to guide. Because of their great flexibility and specific weight, brass bars are relatively difficult to guide at high speeds. Aluminium bars of aluminium are very easy to guide. ALPHA 552...

  • Page 113: Maintenance

    At no time should solvents, such as acetone, or diluents be used for cleaning the barfeed system. At no time should cleaning products come into contact with electrical components. ALPHA 552...
  • Page 114 9-14 CHAPTER 9: MALFUNCTIONS ALPHA 552...

  • Page 115: Chapter 10 Appendices

    APPENDICES 10-1 CHAPTER 10 APPENDICES ALPHA 552...

  • Page 116: Appendix A: Programming Example

    (RETURN TO MAIN PROGRAM) N... N... N... X, Z, G, F, T, S, M, ... N... N... END OF PROGRAM (LOOP) Important: The above is an example only. Programming may change according to the interface between the lathe and the barfeed. ALPHA 552...

  • Page 117: Appendix B: Ordering Form

    APPENDICES 10-3 APPENDIX B: ORDERING FORM This form should be photocopied, duly filled out, and returned to your retailer or nearest LNS agent Company name: Person in charge: Address: ZIP: City: Country: Phone: Fax: Type of device: Serial number: Qty.

  • Page 118: Appendix D: Adress Lns

    21053 Castellanza – VA Tel : +39 0 331 501 901 Fax : +39 0 331 482 101 TÜRKİYE LNS Makine San.Tic.A.Ş.Via Mons. Colombo 34 info-turkiye@LNS-europe.com Keresteciler San.Sit. 10.Sk.No:45 www.Lns-europe.com Kazan - Ankara / TÜRKİYE Tel : +90 312 815 24 34...

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