The K3 CNC represents the entry level of Esa-Easson range of numeric controls. It has been specifically designed for use on milling machines

with 3 axes and controlled spindle or with 4 axes and spindle without position transducer.

The K3 CNC is fully built into the operator panel. A specific machine console connected to the CNC by optic fiber (ESA Ring proprietary interfa-

ce) completes the configuration. The machine console features 50 keys (most of which are equipped with Leds), an emergency pushbutton, 3

overrides (Feed, rapid and Speed) and input for connecting a handwheel.

Thanks to the ESA Ring fast interface used for the connection, the Machine console can also link to a whole series of I/O expansion modules

that can be remote controlled up to 20 meters away from the CNC module.

Besides being executed in the CNC’s Silicon Disk (8 MB available), the Part Programs can also be executed in the through mode via serial inter-

face and by downloading them from a USB memory stick.

l Multichannel ISO programming.

l PLC programmable in IEC 61131 with the Instruction List language.

l 2 task PLC with differentiated scanning times.

l M functions can be customized with linking to ISO subroutines.

l 8 nesting levels for fixed cycles and subroutines.

l Symbolic parametrics with program flow control instructions (IF-THEN-

ELSE, FOR, WHILE, REPEAT, JMP).

l Fixed cycles for Boring, Deep boring with swarf unloading, Tapping

with and without compensation (rigid), Reaming, Boring on flange

and on grid, Flattening. The macros can be used both in a Part Pro-

gram and in the direct mode (“Intuitive” programming).

l User-friendly program editor with help in line.

l Management of 4 origins and 30 tools.

l User-friendly functions for Tools and Origin Preset.

l Cycle for origin formation in the center of a workpiece.

l Conversion of axes movements via dynamic matrices.

l Repos, Retrace and Block Search with Overstore functions.

CNC MAIN SOFTWARE CHARACTERISTICS OF THE K3 CNC MAIN HW CHARACTERISTICS OF THE K3 CNC

Dynamic CPU / RAM AMD ELAN 520 – 133 MHz / 32 MB - DIMM PC format

Display 5.7” monochromatic LCD with 320 x 240 pixel resolution

Silicon Disk 32 MB (built into the DIMM module)

Part program Memory 8 MB (Drive D: of the Silicon Disk

RAM supported 32 KB FRAM type (supported without battery)

Serial ports 2, of which one can be configured as RS422 / 485

USB 1 (version 1.1)

CAN interface 1, for connecting both axes (DSP402v2.0 profile) and I/O

Axes interface4 fast counting circuits (maximum frequency 1 MHz). Can be configured as NPN / Push-pull / Differentials +5/12V.4 +/-10V analog outputs with 15 bit resolution + sign.

Digital inputs 32 - Optoinsulated 24VDC protected against polarity reversal

Digital outputs 32 - 24VDC - 0.7A protected against overloads

Analog inputs2 in voltage with 12-bit resolution (one with 0/10V, 0/5V, +/- 10V configurable range, the other with 0-5V fixed range).

Analog outputs 0-10V range - 8-bit resolution

Power supply and Power Inputs

24 VDC +/- 20% - 50 W max

Dimensions (HxLxD) 432x227x78 [mm]

Operating temperature range

5 - 50 °C

CNC K3 SPECIFICATIONS FOR MILLINg APPLICATIONS

1. Axes Control

l Management of 4 axes + open loop spin-

dle or 3 axes + controlled spindle.

l Contemporary interpolation of all the

axes / Spindle.

2. Man Machine Interface / Display

l Display: 5.7-inch monochromatic LCD with

320x240 pixel resolution

l Information displayed:

Operating modes (AUTO, JOG, MDI, ..).

CNC status ( Ready, Hold, Execution

Alarm …).

Name of activated Part Program.

Three ISO blocks of the interpreted or

interpolated program displayed.

Axes targets displayed (absolute, or con-

cerning active origin, residual distance

and follow error).

Measured spindle speed.

List of active G functions.

Activated sub-modes (Dry Run, Step,

Check, Conditioned block execution, Re-

positioning, Retrace, Conditioned execu-

tion of M01 function).

M functions activated.

Tool T mounted.

Activated D corrector.

Current and programmed Feed and

Speed values.

Speed and Feed Override value.

3. Data interface

l Serial DNC (RS-232).

l Storing and loading of part programs to

and from a USB memory stick.

l Built-in 32 Mbyte Silicon Flash Disk.

4. Command Input

l Minimum programmable movement di-

stance 1µm/0.0001 inches.

l Metric / inch programming.

l Absolute/Incremental programming.

5. Interpolations available

l Linear interpolation.

l Circular interpolation.

l Helicoid interpolation.

6. Drive control

l Feed Range

Rapid: 0-60 m/min - Work: 0-60 m/ min

- Jog: 0-60m/min.

l Feed setting

Feed in mm/minute - Feed in mm/ rev.

l Override Feed

Separate for rapid and work.

Handwheel management.

l Acceleration / Deceleration control

Linear and S-shaped ramps with Jerk con-

trol.

Automatic acceleration management on

the edges.

Speed limitation on the arcs depending

on the radius.

Filters to control fluidity of movement.

l Gantry axes management.

l Reverse time programming.

l Controlled Spindle management

Spindle positioning on preset positions.

Rigid Tapping .

Range management.

l Tool management

Display of tool on spindle

Tool Radius and Length compensation.

Manual Length presetting of tool on spindle.

Tool Table management.

l PLC

One PLC can be set-up as slow and one

as fast.

PLC programming in the Instruction.

List / AWL language.

Standard Function Blocks available for

handling the basic machine functions.

Axes can be directly controlled by the PLC.

PLC Alarms/Messages can be customized

in the various different languages suppor-

ted by the CNC.

l Origin management

Selection of machine coordinates

4 Work origins selectable with

Offset setting on activated origin.

Roto-traversing of activated coordinates

via dynamic matrix.

Origin Preset procedure.

l Program verification backup

Auxiliary functions Optional stop.

Conditioned execution of a block (/…).

Program Test Dry Run.

Syntactical correctness verification with

Verify function.

Program Execution Block Search.

Start Cycle.

Reset.

Single execution.

ISO Debugger.

Editor with Utilities.

Macro.

Hold.

Execution continuance with Overstore.

7. Auxiliary Functions

Macros and Fixed Cycles

Boring cycles.

Tapping cycles.

Specific macros can be developed

8 nesting levels allowed.

Variables that can be used in a program

128 GV (Global Variables amongst the

configured channels).

256 LV (Local Variables of the channel).

128 AV (Automatic Variables assigned

to the program/sub-program of the indi-

vidual nesting level).

Macro:

Hole matrices.

Flange boring.

Flattening.

Pocketing.

Chamfer programming (CHA).

Mirroring (MIR).

Auxiliary Functions dedicated to the

accuracy of programmed profile

execution

Exact stop.

Look ahead (150 blocks).

Data input / output

Part program.

Tool parameter table.

Machine Parameters (PAR.DAT file).

Variables (VL, VG and VA).

Macro Parameters.

8. Mechanical error compensation

Back eash compensation.

Screw pitch error compensation.

9. Safety & Assistance

Safety

Emergency Stop.

Hardware limits.

Software limits.

Troubleshooting

Error display via PLC.

Message display via PLC.

Display of ISO Programming syntax errors.

Display of Operator errors.

Display of Axes / Drives errors.

Encoder fault/disconnection alarm.

Tele-diagnosis.

10. PLC programming environment (in PC

in Development/Debugging phase).

11. Access to the various CNC environmen-

ts can be controlled with a password.

12. System update.

13. Backup/Restore of machine parameters.

14. Backup/Import of PLC programs.

15. DNC.

CHINA

Easson Measurement Technology LtdSan Zhao Industrial Park

519040 Zhuhai, Guangdong, ChinaTel. +86 756 7511 234; fax +86 7511 215

ItAly

Via Zamboni,1541011 Campogalliano (MO)

Tel. +39 / 059 851414Fax +39 / 059 851313

www.esagv.itInfo@esagv.it

Esa/Gv srl