Hypertherm HD3070 Plasma Arc Cutting System w/ Automatic Gas Console - Manual (Page 100)

HD3070 with Automatic Gas Console Instruction Manual 4-11
16
OPERATION
• At CNC controller, set cutting current, arc voltage, travel speed, initial pierce height and pierce delay time
according to cut charts.
• The system is now ready for cutting.
Note: If the system has been powered up, but not in use for a while, purge the gas lines by positioning the
Test Preflow/Run/Test Cut Flow switch (S2) to Test Cut Flow for 5 seconds and then to Test
Preflow for 5 seconds. After purging the gas lines, set the switch to Run. Failure to purge the lines
may result in short consumable life due to contamination of water residue in the torch.
Remote Mode
To start up the HD3070 on a daily basis, in the remote mode, proceed as follows:
1. Select consumables based on the material to be cut. If the consumable parts are to be reused, check for wear
or damage. Refer to Changing Consumable Parts in this section.
2. After checking the consumables, ensure that the torch is at right angles to the workpiece (0° and 90°) to get a
clean, vertical cut. Use a square to align the torch.
3. Apply system power by setting the main disconnect switch for the power supply to On.
4. Initiate the power on control signal from the CNC interface to power up the power supply. This signal should be
activated for 15 seconds or until the POWER INTERLOCKS OK signal is returned to the CNC controller.
5. Ensure the POWER INTERLOCKS OK signal is returned to the CNC controller. If not check the STATUS LEDs
on the power supply and check for plasma and gas system error messages on the gas console LCD display.
Refer to Figure 4-3 and the Error Messages list.
Note: If the COOLANT FLOW LED does not light, unscrew filler/vent cap on coolant tank (item 9, Figure
6-10). Add 1.9 liters (2 quarts) of coolant.
6. Also at initial startup, the gas lines will be automatically purged for 40 seconds total. The gas console LCD
display, Figure 4-3 field E will indicate PURGE- PRELFOW for 20 seconds and then PURGE-CUT FLOW for 20
seconds.
7. Initiate the control signals from the CNC interface to select the required gas cutting process at the gas console.
Select either oxygen (O
2
), AIR or a mixture of argon-hydrogen and nitrogen (H35 & N
2
) as the plasma cutting
gas.
8. Set the gas flowrate percentages on the gas console metering valves from the CNC interface using BCD set-
points. The CNC controller should provide the following sequence to set up the gas metering valves:
• Selects the BCD code for the valve number (1 - 6) to be set on the four VALVE SELECT lines. These signals
should be pulled low (common) to make them active.