Torch-to-work distance is too high. The LongLife process also requires that cuts start and stop on the workpiece. Note: The squarest cut angle will be on the right side with respect to the forward motion of the torch.
Note: To determine whether a cut-angle problem is being caused by the plasma system or the drive system, make a test cut and measure the angle of each side. Page Additional Improvements Hypertherm calculates mild steel pierce parameters with certified A plate.
The numbers shown in the Cut charts are recommended to provide high-quality cuts with minimal dross. Because of differences between installations and material composition, adjustments may be required to obtain desired results.
If the torch is perpendicular to the workpiece, the bevel angle is zero. Nominal thickness The vertical thickness of the workpiece. Differences between installations and material composition may cause actual results to vary from those shown in the table. It is used as the preflow gas Metric Equivalent Minimum Knowledge of final isolation troubleshooting techniques is also assumed. In addition to being technically qualified, maintenance personnel must perform all testing with safety in mind.
CAN Bus signal cable: Provides process and status signals between the power supply and the gas console. Power cable: Provides VAC to the ignition console. Power-up — The system verifies that all of these signals are off at power-up Coolant flow off Chopper current off Transfer off Phase Loss off Chopper 1 over-temp off Magnetics over-temp off Coolant over-temp off Plasma start off 2.
The purge process has 2 stages; a preflow purge and a cutflow purge. The preflow purge gas is turned on for 8 seconds with an auto gas console, or 12 seconds with a manual gas console. The active valves in the gas console will differ, depending on what process was used before marking.
Valves active when changing from a non-fuel gas process Gas console AC valve driver board — None needed. The flow switch is tested when the pump restarts after a pump timeout Flow switch 30 minutes without a start Wait 10 seconds for the flow rate to stabilize.
Verify proper pierce height. No arc work lead 2. Verify proper preflow and cut-flow settings. Verify that cable number 5 power supply-to-gas console control cable is not damaged and is properly connected to PCB3 and to the rear of the gas console. Inspect gas supply pressure and volume of gas remaining in lower limit of supply tanks.
Verify gas supply regulator settings. See Setting the supply regulators Installation section. Shield gas pressure is over High shield 2. Verify pressure settings on gas console with cut chart. Auto gas - the process parameters may not have been downloaded. Verify that the large fan in the cooler is running. Blow dust out of the cooler, especially from the heat exchanger. Verify that the voltage on the rear side of J1. If this is a new system, follow start procedure. Verify that the coolant filter is in good condition.
No coolant Coolant flow signal was 3. A current greater than High current 35 amps has been If either illuminates, Auto Gas move into position within replace the motor valve. Measure voltage across current sensor. Replace the control board. Manual Gas the gas console control Only board. Internal flash Communication problem error to the flash chip on Verify that the circuit breaker on PCB7 has not tripped.
If it has tripped, reset the breaker by pressing the button until it is even with the top of the circuit breaker. If the circuit breaker is not tripped and there is no power to PCB7, verify that the fuse on PCB2 in the power supply is good. Use extreme care when measuring primary power in these areas. Voltages present at the terminal block and contactors can cause injury or death.
Ground Note: Check lines in the following order Turn OFF all electrical power and disconnect the air hose from the filter. Remove the filter bowl by turning it counter clockwise until it releases. Pull the clear filter housing down firmly to remove it. The filter housing has an o-ring around the top. Turn OFF all power to the system.
Remove the return coolant hose red washer on the cooler fitting from the rear of the cooler and put it in a 20 liter 5 gallon container.
Drain coolant before servicing the filter. Coolant system filter Filter replacement 1. Remove housing. Remove and discard filter element.
Page Coolant Flow Tests An in-line flow meter is the most accurate way to measure the flow rate, but can not be used with all the tests described without custom fittings. An in-line flow meter part number is available from Hypertherm. Page Bypass Valve Verification Right side orifice Filler cap Bypass valve Using the Hypertherm flow meter Use the steps below to get an accurate reading from the flow meter. Hold the flow meter upright. Square in both axis. Take your reading from the edge shown below.
Page Test 1 - Return Line 1. Turn OFF the power. A Hypertherm coolant container works well. Measure how long it takes to fill the container. Page Test 3 - Change The Torch 1.
Remove the pump outlet, coolant line, and place it in a 3. Is the motor on? If the LED is illuminated, but the pump is not running, turn the pump on manually. If the motor will not turn on, verify that the fuse is OK, and make sure there is power to the motor. If you are still not getting flow from the pump, verify that the solenoid valve and relief valve are working correctly.
The start circuit performs 2 functions: 1. It allows the initial pilot arc current to flow through the pilot arc lead quickly, with little impedance. D1 illuminates as soon as the torch fires and will extinguish as soon as the arc transfers to the workpiece.
If arc transfer is immediate, the LED will not illuminate. If there is no arc at the torch or if the arc will not transfer: 1. See table below. Pilot arc current Plasma gas amps amps amps amps amps amps amps amps Transfer current Plasma gas amps amps amps Each large electrolytic capacitor blue-cased cylinder stores large amounts of energy in the form of electric voltage.
Even if the power is off, dangerous voltages exist at the capacitor terminals, on the chopper, and the diode heatsinks. Page 2, if chopper 3 is faulty. Inspect the condition of the 3 contacts for excessive wear.
If one of more of the contacts are worn excessively, replace CON1 and restart the system. If the error remains, perform the following steps. Excessive wear 3. Dangerous voltages exist within the power supply which could cause injury or death. Torch lead test 1.
Preventive maintenance protocol The following protocol covers the basic elements of all Hypertherm HyPerformance plasma systems. If inspection suggests that a component is worn and might require replacement, and you would like confirmation of your decision, please contact Hypertherm's Technical Service department.
Page Cooling System B. At the ignition console; and C. At the torch main body. Also, check the coolant tank for dirt and particulates. Verify that proper Hypertherm coolant is being used. Proper Hypertherm coolant is a red liquid. Torch main body 7. If the gas line pressures hold steady, perform a system gas leak test as specified in this manual.
Check for hose restrictions, as follows: A. Check all hoses to verify that they have no kinks or sharp bends, which can restrict gas flow. Inspect for particulates and blow out Page J J3. Page J1. Page J2. Page 3 Use only the first four dipswitch settings, they are the same as on the control board. If affected, remove from exposure. Restore breathing. Keep warm and quiet. Seek medical Inhalation attention. Eye Contact Immediately flush eye with cool running water.
Remove contact lenses if applicable. Continue flushing with water for at least 15 minutes. Good general ventilation. Eye wash station in immediate area of use. Engineering controls M. S Nil. Page Section 12 Ecological Information Since actual use and handling are beyond our control, no warranty, express or implied, is made and no liability is assumed by Hypertherm, Inc. Hypertherm Plasma systems Power-up a.
Processor boots in microprocessor mode and begins to execute code in external flash memory. Limited initialization of digital-signal processing DSP hardware.
Calculate checksum on external flash and on DSP internal flash. Print page 1 Print document pages. Rename the bookmark. Delete bookmark? Cancel Delete. Delete from my manuals? Sign In OR. Don't have an account? Sign up! Restore password. Upload manual. Upload from disk. Table Of Contents.
Table of Contents. Thick metal cutting techniques. Using plasma to successfully cut thick metal requires more. Note: Unless otherwise specified, for the purposes of this document,. The techniques detailed in this. Materials used for the. Metric conversions are provided for reference. This document describes thick metal cutting techniques. It also describes the timing and sequencing needed to be. This document is. Previous Page. Next Page. For cutting mild steel, stainless steel and aluminum pages.
Lasma arc cutting system with automatic gas console pages. Voltage sensing, torch height control thc system that is designed for plasma cutting applications on an x-y cutting table pages. Page 2 Thick metal cutting techniques overview Edge start Initial cut speed lead-in speed A reduced cut speed should be used for at least the first Positioning 1 inch 25 mm of the cut before traveling at the full cut speed. Page 3 Completing the cut External contour part cut dogleg or acute angle lead-out The dogleg or acute angle lead-out technique can be used One of the following techniques may be necessary on metal to redirect the tail of the arc and the molten metal flow into 5 inches mm thick or greater to fully complete the cut.
Page 4 Dogleg lead-out details for thick stainless steel Proper lead-out for thick material is critical to completely This tab is due to the extreme lagging tail of the arc, the lack sever a part; otherwise, a small tab may keep the part of molten material flowing through the kerf, and the attached to the skeleton at the point where the lead-out insufficient voltage to maintain the arc attachment at this Page 5 Overshoot In order for the leading kerf edge to enter the lead-in edge with kerf compensation active , the programmed path must overshoot by some distance see Figure 6.
0コメント