Fagor NC-200 PB - V0111 User manual

OPERATING MANUAL
Manual version 0111
FAGOR NC-200 PB
NC FOR
PRESS BRAKES

Operating Manual NC-200 PB
INDEX
Diagram of a typical press BRAKE..................................................................... 0
Introduction....................................................................................................... 1
Description of the various machine models .......................................................... 1
1. Unit description.................................................................................... 2
1.1 Front panel............................................................................................. 2
2. Coordinate display. Auxiliary modes ................................................... 4
2.1 Display modes........................................................................................ 5
2.2 Selection of tools and types of material to bend ....................................... 6
2.3 Type of material...................................................................................... 7
2.3.1 Generate the whole elasticity factor table for a new unknown material........ 9
2.3.2 Generate the elasticity factor of a single angle by testing
the bending depth ..................................................................................10
2.3.3 Generate the elasticity factor by trial and error and correct the angle .........12
2.3.4 Saving and recalling the material-type tables through
the serial line RS-232 .............................................................................13
2.3.5 Restoring initial tables ............................................................................14
3Operating modes................................................................................ 14
3.1 Manual /set mode ..................................................................................14
3.1.1 Manual movement from the NC keyboard ...............................................15
3.1.2 Movement with the foot switches. "C" model .........................................15
3.1.3 Manual movement to a particular "X" position, "Y" depth or "a" angle....16
3.1.4 Manual movement by external means ......................................................16
3.2 Machine reference (home) search ...........................................................17
3.2.1 Sequence for axes with mandatory home search on power-up .................17
3.2.2 Sequence for axes without mandatory home search.................................18
3.2.3 Sequence for the Y axis. Model B ..........................................................18
3.3 Tool table loading ..................................................................................19
3.3.1 Recall initial tool values ..........................................................................19

NC-200 PB Operating Manual
4Programming ..................................................................................... 20
4.1 Program editing .....................................................................................20
4.1.1 Editing / Deleting an existing program .....................................................20
4.1.2 Editing a new program ...........................................................................22
4.2 Inserting / deleting blocks in a previously edited program ........................27
4.3 Deleting all the programs ........................................................................27
5Execution Modes with control from the foot switches and
manual station. Models A1, B, C....................................................... 28
5.1 Program execution.................................................................................30
5.2 Execution in semiautomatic mode...........................................................32
6Operation with the RS-232-C serial line ........................................... 32
6.1 Saving and restoring data .......................................................................32
6.2 Parameter transmitting format .................................................................33
6.3 Program transmitting format ...................................................................33
6.4 Transmission of material-type tables .......................................................33
Appendix ........................................................................................................ 34
Error codes ......................................................................................................34
Maintenance......................................................................................................35

Operating Manual NVP-200 PB - page 0 -
Y
X
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DIAGRAM OF A TYPICAL PRESS BRAKE

NC-200 PB - Operating Manual - Page: 1
INTRODUCTION
Throughout this manual, certain installation parameters are referred to which
affect the description of certain NC functions.
These parameters have been set by the installer and may be modified by the
operator.
Theseparametersaredescribedintheinstallationmanualsuppliedwiththisunit.
DESCRIPTION OF THE VARIOUS MACHINE MODELS
Thismanualmentionsdifferentmachinemodels(A,A1,B,C)thatarebuiltquite
differently; but they don't differ as much when using the resources of this
numerical control whether they are up-stroke or down-stroke models.
A. Controlling only the final position of the bend for simple machines that do not
require distinguishing 4 execution modes.
Thefootswitches,theexecutionmodesandthehydrauliccircuitarenothandled
by this unit.
The intermediate positions of the ram cannot be preset.
They are detected with electrical micro-switches.
A1. Same as model A with foot switch control and outputs to control the hydraulic
valves handling the 4 EXECUTION modes.
Especially indicated for conventional down-stroke machines.
B. Same as model A1 with a linear feedback or digital potentiometer to read the
actual position of the ram or the table. This allows detecting the intermediate
positions that may be selected at the NC:
-Top dead point. FAST/SLOW change position.
-FAST/SLOW change position.
-Sheet metal holding position. End of the bend.
Very useful for up-stroke models.
C. Control of the actual movement of the ram / table / apron and presetting of
intermediate positions.

Page: 2 - Operating Manual - NC-200 PB
1. UNIT DESCRIPTION
ThisNCisespeciallydesignedtobeusedonpressbrakes.Itallowsdisplaying
the position of the vertical and horizontal axes as well as executing part-
programs and also moving the axes manually from this NC's keyboard or by
external means.
1.1 FRONT PANEL
Message display
The message display offers assistance to facilitate the operating modes of
this NC.
When using an LCD screen, its contrast may be adjusted by pressing 3to
decrease it or 9to increase it.

NC-200 PB - Operating Manual - Page: 3
Each axis display has eight 14.1 mm high LEDs and another one for the minus
sign (-).
INCH-Inch mode selection. To access it or quit it, press 0
inch
Machine reference search mode which is accessed by selecting
the SET mode.
TEACH - TEACH-In mode which is accessed by pressing when the
editingmode is selected (on the screenfor coordinate selection).
MAN -Manual mode which is accessed by pressing
There are two ways to access it:
Models A and B . Using the keyy
Model C - By selecting the SET mode.
SEL - Axis selected.
JOG - Axis moving.
DIS - Y axis disabled (selector switch in position 5).
Select the X and Y axis respectively.
Program the bending angle or the width of the die's "V".
Machine reference zero (home) search.
Turn the display off while keeping track of the axes position at all times.
This key must be pressed before turning the unit's power off by the main
switch on the back of the unit.
Validate an operation.
Cancel or abort an operation already initiated.
Access the program or tool editing mode.
Access the manual mode.

Page: 4 - Operating Manual - NC-200 PB
Access the program execution mode.
Program blocks after moving the axes to the desired position while in
editing mode (Teach-in mode).
Move the axes in MANUAL mode in both directions and to move
back and forth from one menu option to another.
Move the axes manually at fast feedrate.
Execute and interrupt, respectively, the execution of a program.
987
4 5 6
321
-
+0
inch
Enter data.
-
+Changethe sign of thevaluebeingentered and to eliminatethelast digit
of the X and Y axes.
0
inch Toggle between metric and inch display.
FAccess the special operation modes, parameter setting, communications
via RS-232-C, etc.
2. COORDINATE DISPLAY. AUXILIARY MODES
Turning the unit ON
The unit is turned on by actuating on the power switch of the rear panel
This NC runs a self-test and its LCD screen shows the text:
Fagor NC-200 PB, the 1st and 2nd displays show "Fagor NC". Press and
if there is an error, the displays will show the error number if otherwise. See the
appendix at the end of this manual.

NC-200 PB - Operating Manual - Page: 5
Turning the unit OFF
If you press key theNC turns offthedisplays while maintainingthepower
supply to the feedback systems and goes on reading the position of the axes at
all times. This is not the casewhen the equipment is turned off by means of the
switch on the rear panel of the same.
To reset the displays, just press this key again as long as that the NC is getting
voltage (plugged in and with the switch on the rear panel on).
Notes:
-BeforepoweringtheNCdownwiththeswitchontherearpanelordisconnecting
itfrommains,itis agood ideato pressthe keyinordertostorethecurrent
position of the axes permanently.
-Iftheunitispowereddownwithitsrearpanelswitchorthereisapoweroutage
without previously having pressed , the NC will keep the last position of
the axes for at least 30 minutes.
-The unit will display ERROR 2 when powered back up if the position reading
was lost when turned off while the axes were moving or after the accidental
backup period has expired without having saved the current position by
previously pressing .
2.1 DISPLAY MODES
Language selection
On this NC, it is possible to select the language used for displaying the help on
the LCD screen. To do this:
-Access parameter PAR50 (language) directly by pressing 50
inch
-Press
-
+repeatedly until the desired language appears (English, Spanish,
French, German, Italian, Portuguese, custom*) and press .
Press to quit the language selection mode.
"Custom" may be any user defined language. (See section 3.4 PAR52 of the
installation manual).

Page: 6 - Operating Manual - NC-200 PB
Conversion mm into inches
This NC can displayed the position of the axes in millimeters or inches by
pressing 0
inch keydependingonwhethertheINCHledisofforonrespectively..
Turning off the last digit of the X and Y displays
This NC allows a decimal digit to be switched off (coarse resolution) when the
resolution is excessive, simply by pressing
-
+. For example 0.01 instead of
0.012.
2.2 SELECTIONOFTOOLSANDTYPESOFMATERIALTOBEND
In the initial mode, it is possible to set a particular punch-die set and also the
bending pressure as well as the characteristics of a particular material.
ThisdatawillonlybeassumedwhenmachininginMANUALmode.Section3.1.
·Press F
·Use to select <Tool> and press to access to the selection page:
[punch number] [·] [die number] and press
Maximum pressure when using a pressure gage (transducer),
[Sheet thickness]
[Number of associated table (0 to 19)]
Press to exit.
This unit assumes the offsets indicated in the tool table. See section 3.3.
·The screen shows the number of the selected tooling.
Punch, die 1.1
·The position shown on the Y axis display corresponds to the relative distance
between the edge of the punch and the top side of the die.
The final bend position is always negative.

NC-200 PB - Operating Manual - Page: 7
2.3 TYPE OF MATERIAL
The type of material depends on a number of factors that make it impossible to
foresee its behavior in order to calculate the depth "Y" of the punch according
to the programmed angle αα.
This problem is solved using the TEACH-IN editing mode that forces the
operator to make several bends by trial and error until obtaining an acceptable
result and memorize the "Y" depth associated with the requested angle αα.
This is a very time-consuming task because it has to be repeated for all the
programmed angles. A program stored in memory must be executed with the
same tools used in the TEACH-IN process. The width of the die forces its
geometry.
Usingtheelasticityfactor associated with each material exceeds the capabilities
of a conventional TEACH-IN editor that only requests the depth of the bend:
·It is a programmable parameter that is assumed together with the thickness of
the sheet metal in the N0 block of each program.
·It associates certain constants, in a table format, for 8 fixed values multiple of
10 between 50º and 120º.
·It calculates (prorates) the factor corresponding to intermediate angles.
·It is also possible to store in the table 5 special values associated non-multiple
of 10 or out of the 50º-to-120º range, if they will be repetitive in future bends
with the same material.
·TheTEACH-INeditor (section4.1.2)offerstheoption toloadanewfactor for
specialanglesormodifythevaluestoredinthetablethatmatchesatypicalangle
to be corrected.
·This unit has resources to generate the tables for unknown material types and
to set corrections based on the original ones to adapt them to materials
supposedlyverysimilartothestandardonesofferedhereanddescribedinlater
chapters.
·For white sweet sheet metal F114 (resistance < 50 Kg), the factor is barely
affected by the width of the die. The same program may be executed with
differenttoolswithresultsverysimilarresultsasforthementionedmaterialsand
similar punch radii. It will only require a slight correction.
If the A aperture of the die is larger than the one used in the tries, the resulting
angle will be slightly greater.

Page: 8 - Operating Manual - NC-200 PB
By default, this unit has some initial tables stored in nonvolatile memory and
cannotbemodified.Thistablemaybeusedasasamplefortypicalmaterialsand
there is a modifiable copy of this table under factor numbers M0 to M19.
Either the non-modifiable factors M21 through M41 or the modifiable ones M0
through M20 when programming the header page N0.
There is a specific way, section 2.3.3, to recover the initial tables that serve as
a reference and correspond with the following materials and tools where:
Punch radius of 1 mm:
A = Die width
r = Die edge radius
e = Material thickness
Ri = Inside bending radius.
In order to obtain the same results with the suggested tables, we
recommend to use dies with an edge radius r = A/10 and an aperture
A = 8 x e. On sweet steel, Ri = A/6
Material Are
M0 Reserved for inflexible materials
M1 Aluminum 12 1 1
M2 Aluminum 16 1.5 1.5
M3 Aluminum 20 2 2
M4 Aluminum 24 2.5 3
M5 Reserved
M6 White sheet < 48 Kg mm2 12 1 1
M7 White sheet < 48 Kg mm2 16 1.5 1.5
M8 White sheet < 48 Kg mm2 16 1.5 2
M9 White sheet < 48 Kg mm2 20 22.5
M10 White sheet < 48 Kg mm2 24 2.5 3
M11 Reserved
M12 Reserved
M13 Reserved
M14 Reserved
M15 Stainless steel 12 10.5
M16 Stainless steel 12 10.75
M17 Stainless steel 12 1 1
M18 Stainless steel 16 1.5 1.5
M19 Stainless steel 16 1.5 2

NC-200 PB - Operating Manual - Page: 9
2.3.1 GENERATETHEWHOLEELASTICITYFACTOR TABLE FOR
A NEW UNKNOWN MATERIAL
Tables 0 through 19 are open to the machine operator. They may be changed
with the NC's own resources or uploaded from a PC. They represent each
operator's experience.
M0shouldbereservedforinflexiblematerialsthatdonotrequirebendingradius
compensation. See example in Section 2.3.2
In initial mode, press F
On the "Materials" menu, select <New> and press
TheEXECUTIONmodeisaccessedinthesamewayaddingacannedcyclethat
offers a sequence to check the elastic behavior of the new material.
The first page defines the tools:
[Punch number] [·] [Die number]
[Sheet thickness]
[number of the associated table (1 to 19)
Knowing the tool dimensions and the sheetmetal thickness, this NC has the
necessary geometrical data to suggest consecutive trial bends for 8 angles
betweenα= 130º and the minimumαsupportedbythedieselectedforthetrial.
Press to test the 1st angle of 130º:
The axis displays the sequential trial number, from 1 to 8.
The axis displays the approximate bending depth to know the trial stage.
·Press ,theYaxispositionsatthetheoreticaldepthcorrespondingto130º
to execute the first bend.
Onceexecutedandwhentheramorthebasereachesthewithdrawalposition,
go to the new page that requests an angle. Enter the real angle obtained and
press .
The reading and entering of data may be automatic when using the FAGOR
electronic angle measuring device connected directly to this NC.
·Repeat this sequence until completing the whole table.

Page: 10 - Operating Manual - NC-200 PB
After accepting the last angle, it calculates the whole table of elasticity factors
associated with the angles multiple of 10, thus concluding the trial.
These factor are stored in the selected table.
Thistrialmaybeabortedbypressing aftercompletingabend,butthefactors
of the angles already tested will not be stored.
Take certain precautions and maintain a criterium that helps classifying the
materials according to their elasticity, hardness or traction resistance factors:
Type Characteristics of the material
1,2,3,4 Aluminum of different thickness and very hard sheet metal (70 HRB)
that breaks when bent.
5-14 White sweet sheet metal (F114) of different thickness and hardness.
15-20 Very flexible sheet metal: stainless steel, steel 134, etc.
Once their bending limit has been exceeded, the characteristics of the material
change. The limit angle depends on the thickness, type of material and punch
radius on inflexible materials.
Thematerialtypenumbermustbeindicatedforthe8suggestedangleswithsheet
metal that should not have been previously bent at greater angles.
This NC does not offer resources to display the data saved in the tables. It is
recommended to write down the values of the "αα" angle and "Y" depth related
to each type of material and the die number used in the trials.
2.3.2 GENERATETHEELASTICITYFACTOROFASINGLEANGLE
BY TESTING THE BENDING DEPTH
This method is recommended to determine very accurately a single bending
angle by testing an unknown material or an angle way out of the 50º-120º range
even if it belongs to a table already tested.
In initial mode, press F
Use to select <mat> (materials) and press
On the "Materials" menu, select <1> and press

NC-200 PB - Operating Manual - Page: 11
The TEACH-IN EDITING mode is accessed in the same way.
The first page defines the tools and type of material.
[punch number] [·] [die number]
[sheetmetal thickness]
[number of associated table (0 to 19)]
Once all four data have been entered, the NC may access the TEACH-IN mode.
Press (at the "C" model, select "SET" first).
·Press and key in the αα value to be tested and press to make the trial
bend. An approximative result will be obtained.
·Using the resources of the continuous or incremental MANUAL mode, fine
tune the Y coordinate and repeat the trial.
·Selectposition 5 of the MANUAL selector switch todisable the Y axis andthe
"DIS" led will turn on.
Somemanufacturersofferresourcestomovetheaxiswithmeansexternaltothe
NC (typical method on up-stroke machines with a handwheel for manually
correcting the leadscrew position.
Once the right angle has been achieved, usually by trial and error, press
Select <Yes> and press
Measure and indicate the obtained angle.
and press
The relevant elasticity factor is stored. This procedure may be repeated for
several angles until its full capacity is filled: 8 multiples of 10 (from 50º to º120º)
+ 5 intermediate. When exceeded, it displays the message: "Memory full".
Save correction?
Yes<No>
Save correction?
Angle

Page: 12 - Operating Manual - NC-200 PB
Practical examples:
WithafactorofM0,thematerialissupposed
tobeinflexiblewithoutinsidebendingradius.
a) - With M0, r = 0, e = 0, α= 90,
A = 24
Bending depth Y = -12
b) - With M0, r = 0, e = 3, α= 90,
A = 24
Bending depth Y = -7.726
2.3.3 GENERATETHEELASTICITYFACTORBYTRIALANDERROR
AND CORRECT THE ANGLE
Method recommended when trying to correct the elasticity factor of some
material that has been already tested and shows some dispersions.
In initial mode, press F
Use to select <Mat> and press
On the "Materials" menu, select <2> and press
The first page defines the type of material.
[punch number] [·] [die number]
[sheetmetal thickness]
[Number of associated table (0 to 19)]
Once all the data has been entered, this NC is ready to access the correction
mode.
Press . The display blinks "000".
Set the bending angle and press
The "Y" axis reaches the position corresponding to the selected angle and
makes the trial bend.
The characteristics of the material must be close to the selected elasticity
factor.
The result is an angle close to the suggested one. It must only differ in ±5º
for the correction to be accurate.

NC-200 PB - Operating Manual - Page: 13
·Press
The screen shows the option:
Select "Yes" and press . The blinks "000".
·Indicate the actual resulting angle with a maximum resolution of 0.1º and
press
2.3.4 SAVING AND RECALLING THE MATERIAL-TYPE TABLES
THROUGH THE SERIAL LINE RS-232
The material type number is an empirical value (obtained through a custom
algorithm) that cannot be interpreted.
It is recommended to save the initial tables offered by this NC and use them as
references for certain very specific materials.
Each press brake operator may create his/her own tables and save them using
a PC with a communications software like HYPERTERMINAL (available in
Windows version) or "Procom" in MS-DOS version.
Thismethodisonlyrecommendedwhenwantingtohavethetablesofmorethan
20 materials.
The procedure and format are described in chapter 5.
Save correction?
Yes<No>

Page: 14 - Operating Manual - NC-200 PB
2.3.5 RESTORING INITIAL TABLES
In initial mode, press F
Select <Mat> (Materials) with and press
Select <Delete> and press
·To restore the material type (elasticity factor) for a single material:
Indicate the table number, 1 to 19, displayed on the 3rd display and press
·To recover all the initial tables:
Indicate Nr. 99 and press
A dot comes on at the 1st and 2nd display.
Press again. Two dots are lit.
Press F. 2 dots are lit and it offers two choices (are you sure?).
Use to select <Yes> and press
While the tables are being loaded, the message screen shows the message:
"Deleting materials...". M0 to M19 restore the initial values of the table.
3OPERATING MODES
3.1 MANUAL /SET MODE
There are two ways to access: Models A & B: With
Model C: Selecting the "SET" mode.
The MAN led turns on.
This mode also sets the slow Y axis speed below the speed change position
(PAR33).
If any of the axes reaches the software limits set by PAR12 and PAR13 or the
travellimitswitchesareactivated,thisunitissuesanerrormessage;butitallows
moving the axes in the opposite direction to return to the work area.

NC-200 PB - Operating Manual - Page: 15
If PAR16 has been set with leadscrew backlash value, position reading will be
ignored when reversing the turning direction. Once the backlash has been made
up for, this unit resumes position reading. This is particularly noticeable when
using continuous jogging or the Y axis has been enabled and it is moved by
external means.
If PAR17 has been set to "1" or "2", when moving the axes in continuous or
incremental jog mode, in back and forth movements, this unit assumes the
unidirectional approach.
To quit the MANUAL mode, press or change the switch to a position other
than SET.
3.1.1 MANUAL MOVEMENT FROM THE NC KEYBOARD
- Select the axis to be moved with its relevant key or .
-Press or and the axis will start moving in either direction at slow
feedrate. To move it fast, press at the same time and keep it pressed..
-To stop the movement, 1st release the key and 2nd release SLOW..
Otherwise, it keeps moving at the feedrate set by PAR26.
Depending on the position of the
MANUALswitch,the movement will be
continuous or incremental . Positions 1
through 4 (clockwise) in the drawing
below.
3.1.2 MOVEMENT WITH THE FOOT SWITCHES. "C" MODEL
In SET mode, actuating upon any foot switch forces the (Y) axis preset.
In MANUAL mode, using the up and down foot switches is the same as using
the keys that only affect the Y axis.
The foot switches are also operative in INCREMENTAL JOG mode.
Cont.
jog
Incr.1
Incr.2
Incr.3
Disable Y
Semiauto
1
234
5

Page: 16 - Operating Manual - NC-200 PB
3.1.3 MANUAL MOVEMENT TO A PARTICULAR "X" POSITION,
"Y" DEPTH OR "αα" ANGLE
-Select the MANUAL mode with or with "SET" at the "C" model.
-Select the axis:
or to define the position.
For negative values, press
-
+after the coordinate.
To define the bending angle compensating the active tools and
type of material.
The selected display keeps blinking.
-Request a value and press .Theaxiswillmoveuntilitreaches theindicated
position.
To interrupt this movement before reaching its target, press
Toresumethemovement,repeatthisprocessselectingtheanewpositionvalue.
In MANUAL mode, it always assumes the "SET" type work mode. Two foot
switchescontroltheupanddownmovementoftheraminsensitivemodewhilethey
are pressed (A1, B and C models).
The associated elasticity table cannot be modified.
Press to exit.
3.1.4 MANUAL MOVEMENT BY EXTERNAL MEANS
-When disabling the "Y" axis by setting the jog switch in the corresponding
position(position5inthedrawingbelow),the"DIS"ledwillturnonandthe"Y"
axis will be free to be moved by external means. The NC will display the axis
position and will watch for its travel limits.
Cont.
jog
Incr.1
Incr.2
Incr.3
Disable Y
Semiauto
1
234
5