Chapter 2: Machine Control Panel

2. MACHINE CONTROL PANEL The most important aspect of correct machine operation is an understanding of the control panel. The following figure shows the layout.

[ POWER | [~ri "f2~~| F3

TAB ESC

RESET O

O

F4 F5 F6 F7 HELP M O N / MENU

|space|

Z ] EL] l G 1 1 h l E E 3 EL] EZ1

_MJ I N El 1 P 1 | ( 4 j 1 ) ̂1 1 6 1 L i n J 1 FNDI tpGDtJ

El L3 ED EIILZK] Z\ L> fcLZ shifl EOB V 7 E

coolant o

s i n g l e -b l o c k H

TOOL J E D -

spindle

auto _ coolanr-

block£ skip

spindle off f

Y O YO Hand Wh

1 0 0 %

Teach.. In ^

opcional

s t o p C TOOLSi UP

SPINDLE O B N E Q

Spindle RPM

Feed Rate

Mach£? TOOLtf. L o c k ^

HOME O 9 O Jog^ RAPJD

1. HAND WHEEL This works in conjunction with the axis and"+" and "-" keys. Once selected an axis must be selected. Then increment per click is adjusted with the + and - keys.

This selects the resolution of the hand-wheel. Following is a chart:

X1 X10 X100 metric 0.001 0.010 0.100 mm/pulse inch 0.0001 0.0010 0.0100 in/pulse

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Chapter 2: Machine Control Panel

RAPID KEY All rapid traverses can be overridden by 1, 25, 50, or 100%. Once the key is pressed the + and - change the over-ride. This effects rapid traverse in the automatic G00 mode.

JOG KEY Once jog is selected the-axis keys may be pressed to jog the axes. The raíe can be overridden by pressing the + and - keys.

FEED RATE KEY: The feed rate can be over-riden by pressing the FEED RATE key and then using the + and - keys.

HOME KEY: Also known as Zero Return. Although the system can save the current positions oí the machine when power is off it is necessary to move the machine back to home before executing any NC program. This feature can be changed by modifying the PLC program but is not recommended.

There are two different methods that can be used for a zero return operation. One is automatic and the other is manual. This is set in the user parameters.

The automatic zero return will first move the z axis to home first and then move the x and y simultaneously back to home after HOME key is selected on the mode switch and any axis key is pressed. The axes will move at the fixed feed rate as described by parameters. When the home limit switches are touched, the feed rate will be decreased and the direction will be changed until the exact home position is reached. The position will be saved by the system.

When in the manual zero return mode the user must select HOME on the mode switch and press a key to move each axis.

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Chapter 2: Machine Control Panel

select HOME press Z key, then press X key, then —> z will start to go home > x will start to go home

press Y key, then y will start to go home Done

Sequences of Manual Zero Return Operation Once an axis has successfully been homed, an OK symbol (See exampie below) will be displayed in the corresponding axis field of the coordínate page. The machine position will be zeroed or assigned to the offset valué which was specified in the system parameter (home offset).

OK X 0.000 CYCLE START KEY: Is used for starting or restarting program execution.

When in the AUTO mode and the FEED HOLD is pressed during execution of a command, the program execution is suspended. Pressing CYCLE START again will continué the operation. The CYCLE START Switch is not effective in the following cases: a. When the EMERGENCY STOP is depressed. b. When the reset signal is pressed. c. When the selected operation mode is not correct. For example, Handle

mode. d. When an aiarm still remains. , e. When an automatic operation executing without being halted or

suspended. f. The nc system is not ready. (ready LED is not lighted.) g. When the ATC operation has an alarm message.

FEED HOLD KEY: This will stop automatic operation in MEMORY or MDI mode.

When this switch is pressed, the CYCLE START goes off, and all axial movements are decelerated and stopped. The dwell is also stopped.

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Chapter 2: Machine Control Panel

For M and S functions, the machine stops after executing the current command. In the G84 (tapping cycle) or G74 (Reverse tapping cycle) the machine stops at the end of the cycle.

If the FEED HOLD switch is pressed during the return from point R to the initial point, the movement stops immediately. The spindle orientation and coolant are also stopped.

8. SPINDLE OPERATION: Four keys control the spindle on the control panel. They are:

SPINDLE ON: Tums the spindle on at the preset rpm. SPINDLE OFF: Turns off the spindle. SPINDLE ORIENT: Move the spindle to the orientation position. SPINDLE RPM: Control the spindle over-ride.

The speed of the spindle can be changed pressing the SPINDLE RPM key and then pressing the"+" and "-" keys.

The máximum speed of the spindle is set in the system parameter. The actual speed is displayed in S field of the parameter área.

9. TOOL SELECT: Press the TOOL # or TOOL# key on the control panel to rotate the tool carousel. The carousel rotates one step for each time the key is pressed. This function can be used for manual tool loading.

10. COOLANT OPERATION: There are two coolant control keys on the control panel — COOLANT and AUTO COOLANT The COOLANT key is used to manually tum the coolant on or off. The coolant off command (M08) in the program will have no effect if the coolant was turned on by the COOLANT key. The AUTO COOLANT key is used to control the coolant on/off by program (M08, M09) commands. Coolant can only be tumed on/off by M08 & M09 when the AUTO COOLANT key is on. An LED is on the keys to indícate the status of the coolant system.

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Chapter 2: Machine Control Panel

11. SINGLE BLOCK: When this is turned on the program will execute one block at a time. The cycle start key must be pressed to execute subsequent blocks.

12. OPTIONAL STOP: When in the ON position the machine will halt execution of the program when a M01 command is executed.

13. BLOCK SKIP: When this switch is in the ON position all command lines beginning with

a T will be ignored.

14. DRY RUN: Turning this on will cause the speed of all movements to be controlled by the FEED RATE OVER-RIDE switch. The switch is not located on the control panel. It is located in the OPERATE section which is accessed by pressing the F4 key.

15. TOOL SET: The tool set key is used for tool calibration. It can be used with the optional touch probé or by itself. It will store the tool length in parameters.

Probé - If the touch probé is used the parameter PROBE MODE in the user parameters shouid be set to AUTO. The probé distance should also be set. If set to auto the Z axis will move down to contact the probé. Once touched the length valué will be set. If the probé is not contacted within the distance specified by the probé length an alarm will be generated and the process will stop.

Manual - When the PROBE MODE is set to manual the current axis position of the Z axis will be stored as the tool length offset.

16. READY LED INDICATOR: When NC control unit operation is powered on and tested itself, then the LED will be illuminated.

17. RESET: The RESET key will reset the current running program and machine status to the normal state. It will scroll the error message display up one line and reset the coordínate system back to the default as specified in the user parameters. It is suggested that the system is reset before attempting any operation after an error has occurred.

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Chapter 2: Machine Control Panel

18. POWER ON/OFF: The power on/off key is located on the upper left comer of the control panel. It is a green button with a LED window. Pressing the button once will turn the power on and the LED light will become illuminated. Since power on and power off use the same key, power off will be activated only when the user continuously presses the button for more than one second to prevent accidentally turning the power off,. Powering off will shut off the power to the amplifiers and motors, but 5v will remain on for several seconds before the system is completely shut off.

When the power is turned on, the CNC system will initialize and show the title page on the display. This process will take about 15 seconds. In normal conditions the CNC system will be in the READY state after power on.

If an error occurs during the initialization period, an error message will be displayed on the screen. The following diagnostics are performed after the system is powered on:

Computer hardware diagnosis. CNC initialization and communication diagnosis.

* Driver self diagnosis. PLC self diagnosis.

19. EMERGENCY SWITCH: There is a red round emergency switch located on the lower left córner of the control panel. In the event of an emergency, this should be pressed to immediaíely stop all axes motors and the spindle motor. The switch will remain in the on state until it is physically released. It must be released to power on again.

20. MACHINE LOCK: Machine lock is actually located in the OPERATE page which is accessed by pressing the aF4" key. The function will lock the specified axes while the program is executing. Machine lock allows users to select the axes to be locked by setting the Axis lock mask parameter in the user parameter setup. If MANUAL OPER. MODE in user parameter page is set to be on. The specified axis will be releasee for manual movement.

* Tool change is not allowed while machine is locked.

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