Mazak STX SC L PLUS CONTROL Installation guide

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STX SC
“L PLUS CONTROL”
TRAINING
AND
APPLICATIONS
MANUAL

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TABLE OF CONTENTS STX L PLUS
STX START-UP PROCEDURE for L PLUS CONTROL ............................................... 4
POWER OFF PROCEDURE .......................................................................................... 5
NOMENCLATURE ..................................................................................................................... 6
ROUTINE INSPECTION FOR STX SC MODELS...................................................................... 7
Chiller Unit ................................................................................................................................. 9
Lubrication ................................................................................................................................. 9
Focus Lens ...............................................................................................................................10
Vacuum Pump and Mechanical Booster Maintenance.................................................. 10
Vacuum Pump Oil Change........................................................................................................10
Vacuum Pump Demister Filter ..................................................................................................10
Mechanical Booster Oil Change................................................................................................11
Chiller Unit Maintenance ...........................................................................................................12
Lubrication of Axes and Chip Conveyor ....................................................................................13
Cleaning the Focus Lens ..........................................................................................................13
Optic cleaning procedure ..........................................................................................................14
Dry air filter (Machine)...............................................................................................................15
STX SC PREVENTATIVE MAINTENANCE SCHEDULE ............................................. 16
STX/SC: PROCEDURE TO CLEAR MAINTENANCE ALARMS................................... 17
Safety notes for set-up procedure................................................................................. 18
STX Sc Set-Up Procedure ............................................................................................ 19
Procedure For Replacing The Nozzle Tip ..................................................................... 23
PROCEDURE FOR ADJUSTMENT OF THE WEIDMULLER NON-CONTACT SENSOR ........25
CUT MODE PROGRAMMING ...................................................................................... 27
G-Codes:....................................................................................................................... 27
M - CODES: .................................................................................................................. 42
LASER ON SUBPROGRAMS...................................................................................................46
LASER OFF SUBPROGRAMS .................................................................................................47
NORMAL OPERATIONS .............................................................................................. 48
Cut Condition Troubleshooting Outline ......................................................................... 50
Getting the Most Consistent Cut ...............................................................................................52
CUTTING APPLICATIONS ........................................................................................... 54
CUTTING STAINLESS STEEL .................................................................................................60

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EFFECT OF FOCUS POINT ON CUTTING MILD STEEL WITH OXYGEN..............................63
EFFECT OF FOCUS POINT WHEN CUTTING WITH INERT GAS..........................................64
METHODS TO PREVENT BURNING OF CORNERS ..............................................................65
STEEL PLATE CUTTING TECHNIQUES .................................................................................66
PROGRAM RESTART FUNCTION ........................................................................................68
CUTTING PLASTIC COATED METALS ...................................................................................70
SUPPORTING THIN MATERIALS............................................................................................72
LOAD / UNLOAD CELL OPERATION/PROGRAMMING METHODS........................... 73
"ON LINE" PROGRAMMING METHODS FOR LOAD/UNLOAD CELL .....................................74
RESTARTING LOADER AFTER ALARM PROCEDURE ..........................................................76
MULTIPLE PART EXAMPLE ....................................................................................................77
EXAMPLE PART PROGRAM ....................................................................................... 78
CONSUMABLE AND SPARE PARTS LIST FOR STX SC ........................................... 83
PROCEDURE TO SAVE MACHINE PARAMETERS ................................................................84
FOR THE L1 & L2 CONTROL ..................................................................................................84
STX and STX SC How to Sheet................................................................................................85

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STX START-UP PROCEDURE for L PLUS CONTROL
1> Turn on the air compressor.
2> Open the premix laser gas cylinder until the valve is seated in the open position.
Primary Gauge: >142 psi.
Secondary Gauge: 35 - 40 psi.
3> Open the assist gas cylinders until the valve is seated in the open position.
IMPORTANT: OXYGEN CAN ONLY BE USED IN THE PORT LABELED “O2 GAS IN”.
DO NOT CONNECT OXYGEN TO THE “3RD ASSIST GAS” PORT.
OXYGEN SECONDARY PRESSURE: 140 PSI. (NO GREATER)
4> Turn on the main breaker.
NOTE:The main breaker should be left on at all times in order to keep the resonator
and/or refrigerant compressor temperature stable.
The following buttons/keys are located on the operating panel.
5> Press the "POWER ON" button. (IT WILL TAKE ABOUT 30 SEC. FOR NC ON)
6> Press the HOME key. ("HOME")
7> Turn the "LASER" key switch to the “ENABLE” position. (“1” = ON)
8> Press the "LASER POWER" ON key. ( “1”=ON, “0”=OFF )
9> When the "LASER POWER ON" indicator LED stops flashing and remains on
continuously, press the "LASER HIGH VOLT" ON key. ( 1=ON 0=OFF )
10> When the "LASER HIGH VOLT" indicator LED stops flashing and remains on
continuously, the machine is ready for operation.
** IMPORTANT **
NEVER REMOVE ANY COVERS FROM THE LASER POWER UNIT OR LASER
RESONATOR WHILE LASER POWER IS ON DUE TO EXTREMELY HIGH VOLTAGES
PRESENT DURING THE HIGH VOLT ON STATE.

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POWER OFF PROCEDURE
1> Press the "LASER HIGH VOLT" OFF key ( 0 ).
2> Press the "LASER POWER" OFF key ( 0 ). When the indicator LED stops flashing
continue to step no. 3.
3> Turn the "LASER" key switch to the OFF position.
4> Press the "POWER" OFF button.
5> Close all gas cylinders.
6> Leave the main breaker on unless the machine is not to be run for an extended period.
7> Turn off the air compressor.

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NOMENCLATURE
1-1 The MAZAK LASER is composed of the following systems:
A> Laser Resonator
B> External Beam Delivery
C> Operation Panel
D> Work Table
E> Processing Head (torch )
F> Laser Power Unit
1. Mechanical Booster
2. Vacuum Pump
3. Laser Gas Regulator
4. High Voltage Power Supplies
5. Inverter
G> Chiller Unit
1. Water Pump
2. Compressor
3. Air Dryer
4. Air Filters
5. Water Reservoir
6. Air Pressure, Water Pressure and Temperature Gauges
H> Electrical Control Unit
1. NC Unit
2. Servo Amplifiers
3. Circuit Breakers
4. Terminal Strip
5. Relays
6. 100 Vac Transformer
The components listed below are part of the Laser Power Unit and are shown on the following page with the
designated numeric value:
1. Vacuum Pump Drain Outlet 9. Air Admit Plug for Mech. Booster
2. Vacuum Pump Demister Filter 10. Laser Gas Regulator
3. Vacuum Pump Fill Port 11. Laser Gas Filter
4. Oil Level Sight Glass
5. Mechanical Booster
6. Mechanical Booster Fill Port
7. Mech. Booster Oil Level Sight Glass
8. Mech. Booster Oil Drain Line

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ROUTINE INSPECTION FOR STX SC MODELS
IMPORTANT: The maintenance procedures outlined in this manual are a supplement to
the MAZAK OPERATING & MAINTENANCE manual. Refer to the MAZAK
manual in conjunction with this manual for all maintenance procedures.
Remaining Pressure in the Gas Cylinder.
A> LASER GAS: The primary pressure gauge should be set at > 142 psi. ( 10 Kg/cm2 ).
B> ASSIST GAS: The primary pressure gauge should be set at > 142 psi. ( 10 Kg/cm2 ).
Gas Supply Pressure
A> LASER GAS: The secondary pressure gauge should be set at 35 - 40 psi.
B> ASSIST GAS: The secondary pressure gauge for a cylinder connected to the assist gas
port labeled "O2 GAS-IN" should be set at 140 psi. (NO GREATER)
The secondary pressure gauge for a cylinder connected to the assist gas port labeled "3rd ASSIST GAS-
IN" can be set to a maximum pressure of 300 psi. provided the machine regulator is set for 8 Kg.
(3rd assist gas machine regulator is located near the assist gas ports.)
Laser Gas Regulator (machine side)
A> The laser gas regulator is located in the bottom "LASER CONTROL UNIT" cabinet.
This regulator should be set at the green marker ( 1.0 Kg/cm2 )
Laser System Pressure ( Torr value )
A> The LED display for the system pressure is located in the upper "LASER CONTROL
UNIT" cabinet.
STX SC 1.5 Kw = 54 torr
2.0 Kw = 50 torr

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Mechanical Booster Oil
A> The mechanical booster is located in the bottom cabinet of the "LASER CONTROL
UNIT". The oil level sight glass is located on the side of the mechanical booster. A
window is located on the side of the "LASER CONTROL UNIT" to view the sight glass.
B> The oil level should be between the two red lines on the sight glass when the booster is
off.
C> The oil must be changed:
STX SC - Every 2000 hrs. or 1 year ( whichever comes first )
-
Or if the color of the oil becomes dark.
-
OIL TYPE: OR-7000
Vacuum Pump Oil
A> The vacuum pump is located in the bottom cabinet of the "LASER CONTROL UNIT". The
sight glass for the pump is located on the front face of the pump.
B> The oil level should be between the two marks on the sight glass.
NOTE: Older models may not have a mark on the sight glass, fill to center of glass.
C> The oil must be changed:
- After the first 750 hours of operation.
- Then every 1500 hrs. or 1 year thereafter ( whichever comes first )
- OR if the color of the oil becomes dark.
Oil type: OHE-270
D> See pg. 20 of this manual or your maintenance manual for the oil change procedure.

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Chiller Unit
A> The chiller reservoir must be filled with distilled water, a corrosion inhibitor and a
fungicide. A level gauge is located on the side of the chiller unit to indicate the fluid
level. The reservoir holds approx. 40 gal.
Recommended corrosion inhibitor: "ISOGUARD" ( 1/2 gal. / 50 gal. of water )
Recommended bactericide/fungicide: "GAX - 26" ( 5 oz. / 50 gal. of water )
B>The air pressure gauge must be set at 5.0 Kg/cm2 by adjusting the air out regulator.
C> The water pressure must be set at 3.5 Kg/cm2 by adjusting the water bypass
valve.
Water bypass valve location: Below water pressure gauge.
D> The chiller temperature must be 17.5 degrees Celsius + or - 1 degree.
E> The chiller unit must be flushed every 6 months if the recommended corrosion inhibitor and
fungicide are used. (See pg. 22 for flushing procedure )
NOTE: If the recommended corrosion inhibitor and fungicide are not used, the flushing
interval is every 3 months.
Recommended flushing agent: “CITRANOX” ( 1 gal. / 50 gal. Of water )
F> The chiller heat exchangers must be kept clean by vacuuming or blowing out with
compressed air. DO NOT place additional filters over the heat exchangers. This will reduce the
air
flow and cause the compressor to work much harder to maintain the proper temperature.
G> The air entering the chiller must be very clean and dry before it enters the chiller air filter
system. These filters are not meant to be the primary dryer system for the air supply.
The chiller air filters need to be checked every 1000 hours and replaced as necessary.
Lubrication
A>Lubrication of the chip conveyor chain must be performed once per month. (Light
machine oil)
B>The centralized automatic lubrication system requires oil as needed. (Alarm occurs
when low) It will lubricate the ball screws and LM guides for all axes.
STX SC: (Mobil Vactra Oil No. 2)

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Focus Lens
The focus lens should be cleaned once per week if the majority of materials cut are mild and stainless
steel. If a large percentage of work is aluminum or non-metallic material, the lens may need to be cleaned
daily.
Vacuum Pump and Mechanical Booster Maintenance
Vacuum Pump Oil Change
1 > Run the vacuum pump for at least 10 min. so the oil is warm and will drain easily.
2 > Turn "Laser Power" OFF and turn off / lock out the main breaker.
3 > Remove the fill cap on the top of the pump.
4 > Remove the drain plug at the end of the oil drain line by unscrewing the two (2) brass fittings at the
end of the hose. Do not remove the lead cap which is epoxied to the fitting.
5 > Open the oil drain valve and empty the oil into a receptacle. Elevate the rear of the pump to insure
that the entire content is drained.
6 > Close the oil drain valve and replace the drain plug.
7 > Add the new oil to the fill port at the top of the pump. The oil level must be between the two marks
on the sight glass.
NOTE: recommended oil:
- OHE-270 (LEYBOLD)
8 > Replace the fill port plug.
9 > Turn "Laser Power" ON and run the pump for at least 15 min.
10 > Turn "Laser Power" OFF. Check that there are no leaks from the oil drain plug or the demister
filter. Confirm the oil level is between the two marks on the sight glass. If the oil has become dark
in color, drain the oil and replace with new oil by repeating steps 3 through 9.
Vacuum Pump Demister Filter
1 > Remove the demister filter by unscrewing the hex nut on the front face of the pump.
2 > If the filter is contaminated with oil, replace the filter. Clean the rubber seal on the new filter and
wet with oil before replacing.
NOTE: Filter must be flush against the back wall of the housing.
DO NOT run the vacuum pump without the demister filter installed.
3 > After the pump has been run for 15 min., check that there is no leakage from the filter port. If
smoke/oil mist is emitted from the exhaust (below cabinet), the filter is not mounted properly.