Fanuc System 3 Series

Fanuc 3M CNC Control Specifications.

Fanuc System 3M Model A

fanuc system 3m spare parts 

The FANUC SYSTEM 3M-MODEL A is a 2 or 3 axis contouring Fanuc CNC control for drilling and milling machines. In particular, the FANUC SYSTEM 3M-MODEL A is designed to offer maximum economy. Therefore, it is most suitable for numerical control of conventional milling machines which are now controlled by program controller.
By the use of a high-speed microprocessor and many custom LSIs in the control circuits, the number of circuit elements has been drastically reduced, and the number of digital logic Fanuc printed circuit boards has been reduced to only one. The result is outstandingly high reliability. At the same time, since the control section including a power supply is very small (W:560mm H:400mm, D:220mm), it can be easily incorporated into a power magnetics control cabinet at machine side.




The FANUC SYSTEM 3M-MODEL A
is of panel mount structure so that it can easily realize the integration of electric and mechanical systems. Furthermore, a built in programmable controller (FANUC PC-MODEL D) is available so that power magnetics control circuitry is simplified, realizing a more compact and integrated NC machine system.

Also available are the FANUC DC Servo Motor and GETTYS FANUC DC Servo Motor, which have been widely used throughout the world, providing high speed, powerful and stable machining. Furthermore, the FANUC DC Spindle Motor featuring totally enclosed and compact structure is capable of electric spindle orientation control (patent pending). It is, therefore more useful than ever.

PART PROGRAM STORAGE AND EDITING
  • stores part programs and subprograms in the memory.
  • Capacity: 33ft (10m) of tape information as standard, and 66ft (20m) as an option.
  • allows tapeless operation with the part program stored in the memory, and by calling the stored sub program as required.
  • searches, deletes and corrects stored words or blocks and insert new words.
  • searches and deletes part programs stored in the memory.
  • operates the machine by the corrected part program.
  • record edited part program on paper tape permanently, by connecting ASR 33 (option).
  • punches out corrected part programs via connection with equipment featuring ASR or RS232C interface.
  • This simplifies and speeds up program debugging. The trouble of setting or changing the NC tape is eliminated. The part program stored in the memory can be quickly modified to under the most suitable cutting condition.

TOOL LENGTH OFFSET (G43, G44, G49) and CUTTER COMPENSATION (G39-G42)
Tool length offset in the Z axis direction and FANUCs unique cutter compensation allows simplified tool setting and calculation free programming for the offset tool.

DECIMAL POINT PROGRAMMING
The decimal point can be used in the dimension word and is displayed with it. Therefore, the dimensions and the positions can be verified at a glance.

CANNED CYCLES (G73,G74,G76,G80-G89)
Twelve canned cycles are available, including drilling, tapping and boring.

ELECTRIC SPINDLE ORIENTATION CONTROL (option)
As spindle orientation control is performed electrically without mechanical structure, reliability is enhanced and orientation time substantially reduced. This option is available only when FANUC DC spindle motor is adopted.

CIRCULAR INTERPOLATION BY RADIUS DESIGNATION
Circular interpolation is directly specified by the end point of an arc and the radius. Thus, no auxiliary calculations for center coordinates are necessary.

FANUC PC-MODEL D (option)
By incorporating the PC, machine interface can be drastically simplified. 2000 steps of sequence program, DI 104 points and DO 72 points.

INCH/METRIC CONVERSION (option)
Any one of the following is possible:
  • 1. Inch dimension input to a machine tool with inch ball screw.
  • 2. Inch dimension input to a machine tool with a metric ball screw.
  • 3. Metric dimension input to a machine tool with inch ball screw.
  • 4. Metric dimension input to a machine tool with a metric ball screw.
  • As inch/metric conversion is designated by G code, operator error can be eliminated.

COMBINED USE OF ABSOLUTE AND INCREMENTAL DIMENSION DATA WITHIN THE SAME BLOCK
This is one of the advantages of the FANUC SYSTEM 3M MODEL-A.

AUTOMATIC RECOGNITION OF EIA OR ISO (ASCII)
After reading the first EOB code, either EIA OR ISO code is automatically selected. (Only when program input/output option is selected)

KEYBOARD TYPE MANUAL DATA INPUT(MDI), UNIVERSAL DISPLAY(DPL) AND CRT CHARACTER DISPLAY (patent pending)
result in much flexibility of operation, such as:
  • input and display of NC command data
  • setting and display of cutter compensation values.
  • display of various Fanuc alarm signals.
  • display of self-diagnostic results.
  • setting and display of various functions and parameters such as minimum increment values, rapid traverse speeds, acceleration/deceleration time constants for rapid traverse, and backlash compensation values.
The CRT character display unit can display various types of data simultaneously. It can also display the following:
  • Display of current position (tripple size numerics are displayed)
  • Display of programs stored in the memory during cycle operation




3 AXIS CONTROL BY MANUAL PULSE GENERATORS AND PLAYBACK (option)

Using three manual pulse generators, a machine can be manually operated by simultaneous2 axis control, like a conventional milling machine. Playback is possible; the result of a manual trial cutting can be memorized in the NC for automatic operation.
Multiplication of the manual pulse generator is possible up to 100.
So the operator can manually move a machine in the same manner as with the handle of a conventional milling machine.

BUBBLE CASSETTE CONNECTION (option)
Compact and easy to use bubble cassettes (patent pending) can be used for transfer and storage of NC command data.
LSI cassette is also possible.

HIGH PERFORMANCE, HIGH RELIABILITY
Extensive use of high-speed microprocessors and many custom LSIs in the control circuit has drastically reduced the number of circuit elements, and only one digital logic circuit board is used for the control section.
Highly efficient power supply has been employed to reduce the heat generation. The keyboard switches for the NC operator's panel incorporate special rubber covers for dust and drip proofing. And even if a drift in the loop occurs, it is automatically compensated to maintain accurate positioning. Furthermore, very extensive performance tests before shipment ensure long lasting trouble free operation.

STORED PITCH ERROR COMPENSATION (option)
This unique FANUC feature increases machining accuracy and extends the useful life of the machine tool by allowing digital compensation for mechanical wear of the ball screw. Costly installation and adjustment of mechanical dogs become unnecessary.

EASIER MAINTENANCE...SELF DIAGNOSIS
Maintenance of the FANUC SYSTEM 3M-MODEL A is much easier because:
  • the microprocessor always monitors the internal state of the NC, and the state can be classified and displayed. When a failure should happen, an alarm lamp lights, the NC stops its operation, and the detailed cause is classified and displayed.
  • all On/Off signals going into and out of the NC can be shown on the display.
  • any On/Off signal going out of the NC can be issued manually through the manual data input in bit-by-bit manner.
  • various preset parameterssuch as acceleration/deceleration time constant and rapid traverse speed can be shown on the display.

HIGH PERFORMANCE, HIGH RELIABILITY
Extensive use of high speed microprocessors and many custom LSIs in the control circuit has drastically reduced the number of circuit elements, and only one digital logic circuit board is used for the control section.
Highly efficient power supply has been employed to reduce the heat generation. The keyboard switches for the NC operators panel incorporate special rubber covers for dust and drip proofing. And even if a drift in the servo loop occurs, it is automatically compensated to maintain accurate positioning.
Furthermore, very careful selection of components and very extensive performance tests before shipment ensure long lasting trouble free operation.

STORED PITCH ERROR COMPENSATION (option)
This unique FANUC feature increases machining accuracy and extends the useful life of the machine tool by allowing digital compensation for mechanical wear of the ballscrew. Costly installation and adjustment of mechanical dogs become unnecessary.

EASIER MAINTENANCE ...SELF DIAGNOSIS
Maintenance of the FANUC SYSTEM 3M-MODEL A is much easier because:
  • the microprocessor always monitors the internal state of the NC, and the state can be classified and displayed. When a failure should happen, an alarm lamp lights, the NC stops its operation, and the detailed cause is classified and displayed.
  • all On/Off signals going into and out of the NC can be shown on the display
  • any On/Off signal going out of the NC can be issued manually through the manual data input in a bit-by-bit manner.
  • various preset parameters such as acceleration/deceleration time constant and rapid traverse speed can be shown on the display.

SPECIFICATION

STANDARD
Controlled Axes: 3 axes (X,Y and Z)
Simultaneously Controllable Axes: 2 axes (XY, ZX, YZ: 1 in MANUAL mode. However, in case that more than two manual pulse generators are used, two axes are controlled simultaneously.
Increment System
Data Input System: Keyboard input system
Decimal Point Programming
Maximum Programmable Dimensions: +- 7 digits.
Rapid Traverse: Refer to table1, page 8. (Rapid traverse override: 100%, 50%, 25% F0; parameter)
Feed Rate Range: Refer to table1, page 8. (Feed rate override: 0~150%)
Automatic Acceleration/Deceleration: Linear for rapid traverse, exponential for feed (by servo lag)
Combined use of Absolute/Incremental Programming in the same Block of Tape
Programming of Absolute Zero point
Positioning, Linear Interpolation, Multi-quadrant Circular Interpolation
Buffer Storage
Dwell
Auxiliary Function: M2, S2, T2
Cutter Compensation B: +-6 digits, G39, G40, G41, G42
Tool Length Offset: +-6 digits, G43, G44, G49 (Up to 32 sets in total of cutter compensation B and tool length offset values.)
Dry Run: Keyboard type Manual Data Input (MDI) and Universal Display (DPL) or CRT Character Display
Part Program Storage and Editing: Capacity; 33/66ft (10/20m) of tape information)
Subprogram Control: 2 loops
Self Diagnosis Backlash Compensation
Single Block Skip
Interlock
Machine Lock
Stored Stroke Limit 1
Manual Slide Movement Button (JOG and STEP feed)
Feed Hold
Program Protect
Sequence Number Display: 4 digits
Sequence Number Search
Program Number Search
Reference Point Return: Manual, Automatic (G28, G29)
Canned Cycles: G80~G89, G73, G74, G76
Constant Tangential Feed Rate Control
Mirror Image: X Axis, Y axis (by setting)
Emergency Stop

OPTIONS
Program Input/Output: Tape Reader, Bubble Cassette and Adapter, LSI Cassette and Adapter, ASR Interface, RS232C Interface
Tape Code: EIA RS-244-A or ISO 840 (Automatic recognition of EIA or ISO)
Manual Pulse Generator: Multiplication by 1,10 or 100 is possible
Three Axis Control by Manual Pulse Generators
Programmable Controller (FANUC PC-MODEL D) 2000 STEPS, DI; 104 points, DO; 72 points
Analog Voltage Output for Spindle: 0~10V (S4 digits direct designation)
Inch/Metric Conversion: Switchable by G Codes
Playback System
Electric Spindle Orientation Control
Offset Value Input by Programming
Stored Pitch Error Compensation
Servo Motors: FANUC DC Servo Motor and GETTYS-FANUC DC Servo Motor
Servo Amplifiers: 3 phase full waves SCR drive
Feedback: Pulse Encoder
Fanuc Power Supply (For Control Unit): AC 200/220V +-10%, -15% 50/60Hz +1Hz, Single Phase, 400VA



Download the Fanuc System 3 Series Datasheet

fanuc system 3 

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