LNS Express 332 S2 Instruction Manual
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LNS Express 332 S2 Instruction Manual

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Instruction Manual
LNS America
4621 East Tech Drive
Cincinnati, Ohio 45245

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  • Page 1 Instruction Manual LNS America 4621 East Tech Drive Cincinnati, Ohio 45245...

  • Page 3: Table Of Contents

    CHAPTER 4 ELECTRICS 1. ELECTRICAL EQUIPMENT 2. ELECTRICAL CABINET 3. INTERFACE 4-11 CHAPTER 5 PNEUMATICS 1. PNEUMATICAL EQUIPMENT 2. AIR FILTERING UNIT 3. PNEUMATIC VALVE BATTERY 4. PNEUMATIC DIAGRAMS CHAPTER 6 HYDRAULICS 1. HYDRAULIC EQUIPMENT 2. HYDRAULIC DIAGRAM EXPRESS 332 S2...
  • Page 4 8-11 5. AUTOMATIC CYCLE 8-20 6. POWERING OFF 8-20 CHAPTER 9 MALFUNCTIONS 1. FACTORS AFFECTING PERFORMANCE 2. MAINTENANCE CHAPTER 10 APPENDICES 10-1 APPENDIX A: PROGRAMMING EXAMPLE 10-2 APPENDIX B: ORDERING FORM 10-3 APPENDIX C: ADRESSES LNS 10-4 EXPRESS 332 S2...

  • Page 5: Chapter 1 Basic Notions

    CHAPTER 1: BASIC NOTIONS CHAPTER 1 BASIC NOTIONS EXPRESS 332 S2...

  • 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

    CH- 1744 Chénens Suisse Description of the machine : Automatic barfeed system Type : EXPRESS 332 S2 Serial number : (see number on official document) The following transposed harmonised standards have been used : - Concerning the Machinery Directive : ...

  • Page 9: Safety Instructions

     If it is necessary to move the bar feeder once it has been originally installed, do not  It is strictly prohibited to jump wire or remove reinstall it before first contacting LNS or its circuit breakers, main switches, local representative.

  • Page 10: Safety Devices

    5. SAFETY DEVICES 5.1. Description The EXPRESS 332 S2 bar feed system has been designed with a focus on maximum safety during its handling and complies with all EC requirements. Safety covers and devices make access to the moving parts of the bar feed system impossible. Safety switches keep the bar feed system from operating when these protections are open.

  • Page 11: Chapter 2 Technical Data

    CHAPTER 2: TECHNICAL DATA CHAPTER 2 TECHNICAL DATA EXPRESS 332 S2...

  • Page 12: Characteristics (*)

    The following floor space plans indicate the most frequently used dimensions for placing the bar feed system. Details on the dimensions of other parts or elements of the bar feed system will be furnished upon request. A: Left (to-right) / front loading B: Right (to left) / front loading EXPRESS 332 S2...
  • Page 13 CHAPTER 2: TECHNICAL DATA 2.1. Left/front loading EXPRESS 332 S2...
  • Page 14 CHAPTER 2: TECHNICAL DATA 2.2. Right/front loading EXPRESS 332 S2...
  • Page 15 CHAPTER 2: TECHNICAL DATA 2.3. Left/front loading (2 m) EXPRESS 332 S2...
  • Page 16 CHAPTER 2: TECHNICAL DATA 2.4. Right/front loading (2m) EXPRESS 332 S2...

  • Page 17: Layout Of The Elements

    Remnant drop tray Remote control Main access cover Front rest Interface plug (according to OEM requirements – not visible) Air blast Positioning switch Front stand Retraction system (option) Rear stand Loading ramp Air filtering unit Electrical cabinet Pneumatic assembly EXPRESS 332 S2...
  • Page 18 CHAPTER 2: TECHNICAL DATA EXPRESS 332 S2...

  • Page 19: Chapter 3 Setting Into Operation

    CHAPTER 3: SETTING INTO OPERATION CHAPTER 3 SETTING INTO OPERATION EXPRESS 332 S2...

  • Page 20: Transportation

    1.1. Description Depending on its destination, the EXPRESS 332 S2 bar feed system may be delivered either on a pallet, or packed in a wooden crate. When sea or air transports it, the second solution is recommended.
  • Page 21 Take out the parts, and place them in an easily accessible area for mounting the bar feed system 1.3. Preparation for mounting For mounting and installing the bar feed 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 22 (C) under the stands, one for each levelling screw (socket set screw). The uncovered distance between the lathe and the bar feed system should not exceed 20 mm. Should an obstacle impose a greater distance, contact LNS or their local representative.

  • Page 23: Mounting

    CHAPTER 3: SETTING INTO OPERATION 2. MOUNTING The EXPRESS 332 S2 bar feed system is delivered completely assembled. Because of this, it is possible to proceed directly to its alignment when in place behind the lathe. 2.1. Alignment Before proceeding with the alignment of the bar feed system, ensure that the lathe is stable and preferably levelled.

  • Page 24: Anchorig To The Ground

    At this stage, the hydraulic tank may be filled.  For the electrical connection, please see Chapter 4, Electrics.  For the pneumatic connection, please see Chapter 5, Pneumatics.  For filling the tank, please refer to Chapter 6, Hydraulics EXPRESS 332 S2...

  • Page 25: Chapter 4 Electrics

    CHAPTER 4: ELECTRICS CHAPTER 4 ELECTRICS EXPRESS 332 S2...

  • 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 This chapter contains all of the elements regarding the electrical circuit of the bar feed system.
  • Page 27 SQ 13 4.391 Front rest referencing SQ 14 4.391 Front rest pulse input SQ 17 4.968 Switch guiding channel open SQ 18 4.968 Switch guiding channel closed SQ 20 4.391 Switch bar selection (*) See following pages EXPRESS 332 S2...
  • Page 28 1.3.1. Hydraulic pump motor 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 bar feed system is under electrical power.

  • Page 29: Electrical Cabinet

    Bar feeder loading cycle relay 4.925 End of bar relay 4.925 Automatic mode relay 4.925 Auxiliary end of bar relay 4.925 Reserved for option 4.925 Reserved for option 4.925 Reserved for option 4.769 Transformer 1-ph 4.779 24 VDC Power supply 150W EXPRESS 332 S2...
  • Page 30 The power supply to the transformer is immediately interrupted to C60H avoid material damages. After having located and repaired the problem causing this interruption, reset the lever (B) of the circuit breaker. Designation Description Power in connecting terminal Lever on/off Power out connecting terminal EXPRESS 332 S2...
  • Page 31 The transformer T2 has an output of 24 VDC and powers the rest of the barfeed. The transformer T2 output is protected by the fuse FU1 installed in a support in the electrical control cabinet. Although fuses seldom need replacing, is it advisable to keep some spare ones on hand. EXPRESS 332 S2...
  • Page 32 230 V + ground power supply Power output to SERVO motor Battery (ordering number 4.714) Battery plug Emergency stop contact Encoder connecting plug Programmable controller / SERVO amplifier connecting plug Alarm and codes display of amplifier Cover EXPRESS 332 S2...
  • Page 33 Run: The PLC is in RUN mode. This is the standard mode. Halt: The PLC is in HALT mode. Contact your LNS SA dealer. Error: The PLC is in a failure mode. Contact your LNS SA dealer. M1 slot: This slot is left unused, and is used for software updates through flash (red) cards. Do not insert any flash card unless instructed by LNS SA.
  • Page 34 Relay end of bar Push order Relay automatic mode Lathe’s safety door (K10) Relay auxiliary end of bar Programmable interface input Option Programmable interface input Relay spindle interlock Programmable interface input Option INT0 SQ14 Front rest pulse input EXPRESS 332 S2...

  • Page 35: Interface

    (A). 3.1. Description The interface cable(s), between the bar feed system and the lathe is (are) provided by LNS. Although an example of an interface diagram is provided, the diagram for the interface corresponding to your device, essential when making the electrical connection, is located inside the electrical cabinet.
  • Page 36 Transformer T1 Hydraulic pump motor The LNS bar feed systems are equipped with their own thermal protection systems (breakers, thermal relays and fuses, etc.). The power supply for the bar feed system should be connected to the output of a breaker mounted in the electrical control box of the lathe (10 A max.).
  • Page 37 After the loading and positioning of the new bar on the lathe spindle, relay R2 confirms the end of the loading cycle or the part feed out. The operational cycle of relay R2 (pulsed, latched, etc.) is controlled by Services parameters. EXPRESS 332 S2...
  • Page 38 Emergency Stop button are available for connection in the Emergency Stop circuit of the lathe. 3.2.4. Options The options described below are an integral part of the standard equipment of the LNS bar feed systems. These signals, however, are not required for the proper operation of the devices, or the safety locking for protecting persons and materials.

  • Page 39: Chapter 5 Pneumatics

    CHAPTER 5: PNEUMATICS CHAPTER 5 PNEUMATICS EXPRESS 332 S2...

  • Page 40: Pneumatical Equipment

    Pneumatic cylinder Pusher lock in reference position 3.96040.A.50 Pneumatic cylinder Pusher support opening/closing 3.95025.B.40 Pneumatic cylinder Pusher lift locked up / released down (*) Certain less visible elements are shown more clearly in Chapter 7/ General Description. EXPRESS 332 S2...

  • Page 41: Air Filtering Unit

    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. EXPRESS 332 S2...

  • Page 42: Pneumatic Valve Battery

    YV 5A Valve opening pusher support YV 5B Valve closing pusher support YV 6A Valve opening guiding channel YV 6B Valve closing guiding channel YV 7A Valve pusher lift locked up YV 7B Valve pusher released down EXPRESS 332 S2...
  • Page 43 The air pressure switch is directly integrated into the pressure gauge. Set up procedure for the pressure switch:  Remove the glass of the pressure gauge  With a screwdriver, turn the setting screw  Place back the glass EXPRESS 332 S2...

  • Page 44: Pneumatic Diagrams

    CHAPTER 5: PNEUMATICS 4. PNEUMATIC DIAGRAMS EXPRESS 332 S2...
  • Page 45 CHAPTER 5: PNEUMATICS EXPRESS 332 S2...
  • Page 46 CHAPTER 5: PNEUMATICS EXPRESS 332 S2...

  • Page 47: Chapter 6 Hydraulics

    CHAPTER 6: HYDRAULICS CHAPTER 6 HYDRAULICS EXPRESS 332 S2...

  • Page 48: Hydraulic Equipment

    1.1. Description The guiding concept of the EXPRESS 332 S2 bar feed 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 49 Consult your supplier who will recommend the correct oil for you. To drain the bar feeder, place a container with sufficient capacity underneath the drain plug, and unscrew the drain plug. A thicker oil (ISO 150) may, in certain cases, produce better results when guiding profiled bars. EXPRESS 332 S2...

  • Page 50: Hydraulic Diagram

    CHAPTER 6: HYDRAULICS 2. HYDRAULIC DIAGRAM 2.1. Symbols The following table represents the hydraulic symbols used, and their description: Symbol Description Designation Hydraulic pump motor Pressure control Hydraulic tank (bodywork) Guiding element Front rest 2.2. Hydraulic diagram EXPRESS 332 S2...

  • Page 51: Chapter 7 General Description

    CHAPTER 7: GENERAL DESCRIPTION CHAPTER 7 GENERAL DESCRIPTION EXPRESS 332 S2...

  • Page 52: Bar Magazine

    The bar selectors are relocated according to the new value. 2. Load the bar stocks on the loading ramp. 3. Set manually the diameter limiters to ensure no bar can jump over the others. (Clearance of around 1 EXPRESS 332 S2...

  • Page 53: Guiding Zone

    Oil supply 3.96040.A.50 Pneumatic cylinder guiding elements closing / opening Guiding elements locking system 4.968 Proximity switch guiding element opening / closing (SQ 17, SQ 18) (*) Some elements are explained in more details in the following paragraphs. EXPRESS 332 S2...
  • Page 54 (7x 032.30.033) (7x 032.30.033) The guiding channels from the LNS Express 220 and Express 332 can be used in the Express 332 S2; however, for full compatibility, you may need an adapter for the small channel sizes (channels 8 to 29 mm). Additionally, you may have to order separate channels to complete the necessary quantity of items.
  • Page 55 Ø31 Max. Ø30 12 - 28 332.31.234 015.015.814 For channel Ø31 to Ø35 Ø32 Ø25 Ø33 Max. Ø32 12 - 30 L/F: 032.031.074 332.31.254 015.015.814 R/F: 032.031.054 Ø34 Ø25 Ø35 Max. Ø34 15 - 32 332.31.274 015.015.814 EXPRESS 332 S2...
  • Page 56 CHAPTER 7: GENERAL DESCRIPTION The pushers from the LNS Express 332 can be used in the Express 332 S2; however, in this case the useable pusher length is limited to 1220 mm. Pusher length Useable length Pusher version (LP) (LPU)
  • Page 57 1 mm bigger than bar stock diameter. 2.7. Connecting parts to the lathe 1. Telescopic tube, depending on the maximum spindle stroke 2. Adaptation parts depending on the spindle back design 3. Guiding bushing depending on the guiding reduction tubes diameter EXPRESS 332 S2...

  • Page 58: Chain Drive

    With a torque wrench, apply a torque of 0,8 Nm on the adjusting screw (B).  When done, tighten the big locking nut (C) of the gearwheel.  Lock the system with the lock nut (A) of the adjusting screw (B). EXPRESS 332 S2...

  • Page 59: 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. The vise of the EXPRESS 332 S2 bar feed system allows the extraction of remnants of from 100 mm to 400 mm long (300mm for the 2m version).
  • Page 60 The control is carried out as follows:  the optical switch first determinates if the remnant has been extracted out of the spindle  the optical switch then determinates if the remnant has been properly ejected out of the bar feeder. EXPRESS 332 S2...

  • Page 61: Automatic Front Rest

    The guiding elements are depending on the bar stock shape; for round bar stock, they don’t need to be replaced. The closed and open positions are automatically set up by entering the pusher and bar stock diameter in the parameters. Each time the guiding zone is opened, the front rest searches for its referencing position. EXPRESS 332 S2...

  • Page 62: Retraction Device (Option)

    When a lathe is equipped with a bar feed system, certain elements (motors, spindle reduction tubes, etc.) become inaccessible, and sometimes it is difficult, or even impossible, to proceed with their maintenance. To facilitate these tasks, the EXPRESS 332 S2 can be equipped with a retraction system, which allows the operator to move the bar feeder.

  • Page 63: Chapter 8 Operation

    CHAPTER 8: OPERATION CHAPTER 8 OPERATION EXPRESS 332 S2...

  • Page 64: Powering Up

    Please read the safety instructions provided at the beginning of this manual before handling the following devices. The motor of the EXPRESS 332 S2 bar feed system is equipped with a built-in absolute encoder that continuously controls the position of the pusher.

  • Page 65: Remote Control

    The remote control has five distinct segments, namely: display (A), function keys (B), directional keys and numeric pad (C), modes buttons with STOP, MENU and HELP buttons (D), and the emergency button (E). EXPRESS 332 S2...
  • Page 66 Switch to automatic mode Escape Stop after machining one bar stock Return to previous menu Switch to manual mode Jump to next menu Pusher forward (picture may be Load a bar stock in the guiding elements reversed) EXPRESS 332 S2...
  • Page 67 Offset correction must be hold for 3 seconds to validate the change. Start sequence Increment data in offset correction mode Closing guiding elements Decrement data in offset correction mode Change of the guiding elements Opening guiding elements EXPRESS 332 S2...
  • Page 68 HELP key The HELP key displays useful information about the software version, the firmware of the critical components, the current status of the inputs and outputs of the system. EXPRESS 332 S2...

  • Page 69: Set Up

    Select the pusher changeover procedure. The text " READY TO START PUSHER CHANGEOVER CYCLE " is displayed on the screen. Start the function. Le pusher goes to its changeover position. Follow the instructions on the remote control. EXPRESS 332 S2...
  • Page 70 Once the bar feeder has completed the pusher changeover cycle, the bar feeder is ready to work. At this point, it is necessary to check the parameters like bar stock diameter, guiding elements diameter, feeding length, etc. See this chapter, section 4. SETTINGS for further information. EXPRESS 332 S2...
  • Page 71 The radius of the grip is greater than the radius of the bar. The jaws press against only 3 points at 120 degrees. 60° Correct : Modify the centres of the jaws to obtain 2 times 6 support clamping points at 60 degrees. EXPRESS 332 S2...
  • Page 72 + 1 mm), but should always be larger than that of the diameter of the feeding pusher. For inserting and removing the spindle reductions, move the bar feed system using the retraction device (see Chapter 7, section 6. RETRACTION DEVICE for further information). Spindle reduction tubes are available from LNS, upon request. EXPRESS 332 S2...

  • Page 73: Settings

    4.1. Description The EXPRESS 332 S2 has several parameters and functions allowing the operator to configure it so that it adapts as closely as possible to the lathe on which it is installed, as well as to the production mode under way.
  • Page 74 Torque for the part feeding Language setup Allows the access to the other languages Miscellaneous functions  Reference point request  Front rest setup  Timings on lathe’s clamping device Service setup Reserved maintenance technicians and for unlocking features / displays. EXPRESS 332 S2...
  • Page 75 FUNCTIONS > PAGE DOWN, and enter the new guiding element value. Total part feed out length The feed-out length (Lt) includes the part length (Lp), the cut-off tool width (C) and the face-off length (not represented on the picture, depending on the program). EXPRESS 332 S2...
  • Page 76 Depending on the lathe and its options, the auxiliary end of bar may be used 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. EXPRESS 332 S2...
  • Page 77 This parameter is used to deactivate the M function receipt of the turret if this function is not used in the lathe interface. In this case, a timer can be used to give the receipt. Dry Run (may be not visible) This function allows the lathe to run without the bar feeder, ex.: hand loading pieces, etc. EXPRESS 332 S2...
  • Page 78 The contrary applies if the specific weight of the bars is low. Torque rate during high feed rate according to bar diameter (%) Same principle as for the couple fast forward, applied this time to loading. EXPRESS 332 S2...
  • Page 79 In the case of a clamping device with jaws, some time may be provided to prevent any movement before the clamping device is completely open. Front rest settings This parameter allows calibrating the front rest. It also allows activating or deactivating the front rest. (symbol close then symbol open) EXPRESS 332 S2...
  • Page 80 Changing these values can damage the devices and create safety issues. Therefore, these parameters are protected with a password, and only LNS (or certified) technician is authorized to modify them. These parameters set the values of speed, position and torque for a functioning barfeed system 1.
  • Page 81 Current barfeed software, version This screen displays the current software running the barfeeder and its version. Interface inputs and outputs These screens show graphically the active inputs and outputs to ease the troubleshooting process. EXPRESS 332 S2...

  • Page 82: Automatic Cycle

    When powering off the barfeed, make sure the pusher is in reference position, lifted up and no bar stock is present in the guiding element. To power down, turn the switch to the left, to the 0off position. EXPRESS 332 S2...

  • Page 83: Chapter 9 Malfunctions

    CHAPTER 9: MALFUNCTIONS CHAPTER 9 MALFUNCTIONS EXPRESS 332 S2...

  • Page 84: Factors Affecting Performance

    It is, therefore, highly recommended to install reduction liner inside the spindle as indicated in the chapter 8. OPERATION, section 3.3. Lathe – barfeed adaptation. EXPRESS 332 S2...
  • Page 85 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. EXPRESS 332 S2...

  • Page 86: Maintenance

    At no time should solvents, such as acetone, or diluents be used for cleaning the bar feed system. At no time should cleaning products come into contact with electrical components. EXPRESS 332 S2...

  • Page 87: Chapter 10 Appendices

    APPENDICES 10-1 CHAPTER 10 APPENDICES EXPRESS 332 S2...

  • Page 88: Appendix A: Programming Example

    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 bar feed. EXPRESS 332 S2...

  • Page 89: 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 90: Appendix C: Adresses Lns

    10-4 APPENDICES APPENDIX C: ADRESSES LNS LNS AGENCIES SCHWEIZ / SUISSE LNS S.A. sales@Lns-world.com Headquarter service@Lns-world.com Case postale 33 www.Lns-group.com CH – 2534 ORVIN TEL. +41 / 32 358 02 00 FAX +41 / 32 358 02 01 FRANCE LNS France Lnsfrance@Lns.fr...

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