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THORLABS vytran LDC450B, User Manual

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LDC450B Large Diameter Cleaver

 

Chapter 11: Servicing and Troubleshooting

 

Rev A, July 28, 2020

 

Page 49 

Chapter 11 

Servicing and Troubleshooting 

11.1.  Packaging 

Note: Please keep the original packaging and bag that the unit came in. Reuse it if your system needs to be returned 
to Thorlabs for service or evaluation.The illustrations below show the correct way to re-pack the LDC450B. Please 
ensure that the bottom of the box is taped securely before re-packing the unit. If returning a malfunctioning unit for 
repair, we ask that you return the accessories with the unit in case one of the accessories happens to be the source 
of the problems. 

 

Figure 45 

System Sitting in Bottom Foam Insert 

 

 

Figure 46 

Placing the Top Foam Insert on Top 

Summary of Contents for vytran LDC450B

Page 1: ...LDC450B Large Diameter Fiber Cleaver User Guide...

Page 2: ......

Page 3: ...Chapter 5 Theory of Cleaving 11 5 1 Specialty Fiber Cleaving Processes 11 Chapter 6 Cleaving 12 6 1 Overview 12 6 2 The Cleave Process 12 6 3 The Fiber Holding Blocks Inserts Lifting Levers and Thumb...

Page 4: ...eave Blade 40 8 5 Load Cell Calibration 42 8 6 Battery replacement 42 Chapter 9 Accessories 44 9 1 Fiber Holder Inserts 44 Chapter 10 Specifications 48 Chapter 11 Servicing and Troubleshooting 49 11 1...

Page 5: ...bol Description Direct Current Alternating Current Both Direct and Alternating Current Earth Ground Terminal Protective Conductor Terminal Frame or Chassis Terminal Equipotentiality On Supply Off Supp...

Page 6: ...left fiber holding block and the cleave mechanism when the left fiber holding block is moving inwards as they may be pinched CAUTION Damage to the diamond blade may occur if an attempt is made to cle...

Page 7: ...er the blade scribes the fiber tension is maintained causing the scribe to propagate through the fiber and complete the cleave This method produces consistent low angle cleaves with mirror quality end...

Page 8: ...https www thorlabs com locations com for contact information NOTE Please save the packaging material for returning the unit back to Thorlabs for service This packaging will reduce the risk of damage d...

Page 9: ...o return the unit for service Figure 4 Shipping Fixture 3 4 Accessories It is necessary to purchase one bottom insert and one top insert to hold the coated fiber in the left fiber holding block and on...

Page 10: ...e LDC450B fiber cleaver has lights on the top surface that indicate the state of the unit They include A halo light in the power button that glows blue when the unit is on A battery level light that s...

Page 11: ...imple easy to use interface for configuring controlling and monitoring the LDC450B Figure 7 Handset Controller On power up the Handset will automatically detect the type of unit it is attached to This...

Page 12: ...than 1 5A 2 Connect the AC power cord to the DC power supply 3 Plug the DC power jack into the unit 4 If the shipping fixture is still in place remove it and store it in a safe place see section 3 3 P...

Page 13: ...handset Note that the USB socket on the side of the handset is dedicated to connecting a USB flash drive for importing exporting fiber files and updating software Leave it unpopulated for now 9 Plug...

Page 14: ...e LED will start flashing orange indicating that the unit is performing a process The unit will apply tension to the fiber and when the target tension is reached the cleave blade assembly will start o...

Page 15: ...ection of the fiber axis and the cleave is perpendicular to the axis of the fiber 5 1 Specialty Fiber Cleaving Processes Two additional process capabilities are available on the LDC450B These processe...

Page 16: ...ler are shown below in bold Descriptions of these parameters are provided in section 7 3 1 The majority of Users will only need to set the Fiber Diameter cladding Cleave Tension and Pre Cleave Advance...

Page 17: ...de then all operations should be carried out on the left side before securing the right side to minimize the possibility of twisting the fiber during clamping which would introduce torsion in to the f...

Page 18: ...k with the VHT1 Transfer Clamps to aid in moving the fiber between compatible Vytran stations while maintaining coarse alignment allowing safe easy handling and also providing accurate registration re...

Page 19: ...ing them backwards into the lids or by removing them completely Note that when the thumbscrews are used the user should be sure that they are undone when operating the lifting levers to open the FHB L...

Page 20: ...ss and thoroughly cleaned at the location where the diamond blade strikes the fiber the cleave point Figure 13 Stripping Fiber using a Miller Stripper 6 5 Loading the Fiber To load the fiber for cleav...

Page 21: ...an attempt is made to cleave a coated section of fiber make sure that the fiber is stripped down to bare glass and is cleaned thoroughly at the point where the blade will contact the fiber 6 With the...

Page 22: ...ds the fiber over the Blade Offset Pre Cleave Advance distance CAUTION The Cleave Blade should never touch the fiber on the initial fast move towards the fiber or damage to the blade could result d Th...

Page 23: ...ly as these shards can be very sharp 6 Check that no debris is left behind in the FHB V grooves or on the lid clamping surfaces Tthe Handset Controller will display a message with instructions to Clos...

Page 24: ...change the top insert without a bottom insert in place the top insert can get stuck in the lower channel 1 Loosen the four 4 set screws accessible from the back of the FHB lid using the 0 035 hex key...

Page 25: ...8 Changing the Bottom Inserts It is important that both inserts in the FHBs fit together properly It is better to have both inserts fitted loosely in the FHBs and secure them both at the same time 1 W...

Page 26: ...force a smoother cleave surface is produced To activate the Subcritical Process open the Parameter Select screen select the Sub Critical Cleave Process parameter and select Enable When enabled three a...

Page 27: ...n if there is end face damage but no angle Do not go below 60 of the Auto Parameter value or severe blade damage may result To use the Micrometer Backstop load the fiber in to the unit in the normal w...

Page 28: ...using the switch located at the back of the unit The system will go through an initialization process that takes from 15 to 90 seconds during which time all of the motors will home During this time t...

Page 29: ...rs that control the Cleave Process The LDC450B is designed to provide easy operation when performing simple cleaves but still support customized processing for more complicated cleaves involving speci...

Page 30: ...e the maximum total distance that the blade can advance during the scribe The default is 60 Cleave Forward Steps This parameter is the distance in steps that the Cleave Blade moves toward the fiber du...

Page 31: ...at the backstop should be set and its approximate value A value of 7mm is typically considered to mean unused The following Parameters are required by the sub critical process Parameter Description Re...

Page 32: ...ard Steps 81 40 400 Cleave Reverse Steps 80 39 399 Scribe Delay 250 ms 1 ms 5000 ms Set Blade Offset Unit Specific Value 100 Steps 2500 Steps Sub Critical Process Parameters Re Tension Level grams 10...

Page 33: ...ternal storage of the Handset Controller Figure 25 Open File Will List Current Files Saved to the Handset Save File Overwrite the current fiber file with any changes that have been made to the paramet...

Page 34: ...the side USB port The files will be saved to the root of the USB drive Import Files Import any saved fiber file from a connected USB flash drive to the internal storage of the Handset Controller The...

Page 35: ...B offset And for the Cleave Blade motor the user can apply the position to the Pre Cleave Advance parameter 7 5 2 Auto Parameter Auto Parameter will generate a basic set of suggested theoretical value...

Page 36: ...ist gives quick access to the parameters needed to manage blade setup Touch an item in the list to edit the value When the blade is in its Service Position the Home button is displayed when the blade...

Page 37: ...eceive commands to the PTR407B To send a command select the line just above the Send and Close buttons This will open a keyboard for sending commands Figure 31 Main Terminal Screen 7 5 5 Version Selec...

Page 38: ...s been setup and entered the user can quickly log out using Log Out A password is required only if one has been set to change Access Permissions These permissions are the actual mechanism for protecti...

Page 39: ...ge User Access Permissions This is the default level and is enabled by setting the password to an empty string Read Only allows user to Open Files but does not allow the user to make or save any chang...

Page 40: ...ameter Cleaver Chapter 7 Using the Handset to Control the LDC450B Page 36 TTN197399 D02 Figure 35 User Three Levels of User Access Displayed at the Top of the Screen Figure 36 File Menu with No read o...

Page 41: ...d or damage that may prevent the lids from closing properly and the fiber from being fully clamped It is particularly important to make sure that the bottom insert V groove surfaces and the top insert...

Page 42: ...vent possible damage to the Cleave Blade and retract the Micrometer Backstop Figure 38 Cleaning the Cleave Blade The Cleave Blade should be cleaned using a cotton tipped swab wetted with acetone or is...

Page 43: ...tion the blade to a new section of the diamond edge 4 Re tighten the clamping screws These should not be over tightened Figure 39 Screws Used in Height Adjustment After adjusting the height of the Cle...

Page 44: ...unit and consists of the diamond Blade tip which is permanently mounted to a stainless steel base with a round reduced diameter shank WARNING Use great care when working near or handling the Cleave Bl...

Page 45: ...e cleave position 4 Loosen the set screw in the top of the Cleave Arm one full turn counter clockwise using the 0 035 hex key provided Figure 42 Set Screw and Cleave Arm 5 Insert the 0 035 hex key thr...

Page 46: ...ated at the front of the cleave block assembly turning counter clockwise one full turn 3 Turn the height adjustment screw counter clockwise until it disengages 4 Push down on the Cleave Blade housing...

Page 47: ...aptive to the battery access panel so you don t need to worry about them falling out Prize out the battery using two small flat head screw drivers make sure the battery connector does not get hung up...

Page 48: ...de in Section 9 1 should be used to select the appropriate Inserts for each holding block Top Inserts The table below summarizes the top Fiber Holder Inserts that are available from Thorlabs Item Side...

Page 49: ...No 2692 m 3198 m N A No Insert Selection Guide The table on the following page indicates the maximum and minimum diameters that can be accommodated by different combinations of Top and Bottom Inserts...

Page 50: ...t fit does not incorporate your fiber sizes Third Best Fit Try these options if the other two categories do not incorporate your fiber sizes a These inserts have two grooves one on each side that each...

Page 51: ...uum holes designed to aid in aligning small fiber in other equipment such as the GPX family of spicers while Bottom Inserts for fibers of 1000 m or larger do not have these holes The LDC450B is not eq...

Page 52: ...arately see previous chapter Power 12 5 VDC 5 A Provided by External Power Supply External Power Supply 100 120 200 240 VAC 4 5 2 2 A 47 63 Hz Dimension L x W x H without Holding Blocks 10 63 x 4 64 x...

Page 53: ...eturned to Thorlabs for service or evaluation The illustrations below show the correct way to re pack the LDC450B Please ensure that the bottom of the box is taped securely before re packing the unit...

Page 54: ...ing back off the micrometer away from the cleaved fiber prior to unloading This will ensure that the fiber does not contact the micrometer during unloading Q How many cleaves per blade With proper cle...

Page 55: ...ther Thorlabs products such as Pure OEM products that means assemblies to be built into a unit by the user e g OEM laser driver cards Components Mechanics and optics Left over parts of units disassemb...

Page 56: ...LDC450B Large Diameter Cleaver Chapter 13 CE Certificate Page 52 TTN197399 D02 Chapter 13 CE Certificate...

Page 57: ...mation USA Canada and South America Thorlabs Inc sales thorlabs com techsupport thorlabs com UK and Ireland Thorlabs Ltd sales uk thorlabs com techsupport uk thorlabs com Europe Thorlabs GmbH europe t...

Page 58: ...www thorlabs com...

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