FANUC Series 30i/300i/300is-MODEL A. Machining Center System. User's manual - page 223

12.SETTING AND DISPLAYING DATA

OPERATION

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- Calling the color (color palette values)

Press operation soft key [COLOR1], [COLOR2], or [COLOR3]
to select a storage area where color palette values are stored.
(When operation soft keys [COLOR1], [COLOR2], and
[COLOR3] are not displayed, press the rightmost soft key to
display the operation soft keys.)

2 Press operation soft key [RECALL]. The operation soft key

display switches to the following:

Pressing operation soft key [EXEC] calls the color palette values
from the selected area to enable the color to be modified. This
operation is invalid if no color palette values are stored.
Pressing operation soft key [CAN] or the leftmost key does not
call the color palette values from the selected area.

NOTE

1 Immediately after the power is turned on, the

settings of COLOR1 (parameters) are used for
display. If nothing is stored for COLOR1, the
default colors are used for display.

2 Do not modify the color setting data parameters

directly by MDI key input. When modifying the
standard color data, be sure to perform a storage
operation on the color setting screen.

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12.4.10

Machining Parameter Tuning

In AI contour control, by setting a velocity-emphasized parameter set
and precision-emphasized parameter set and setting the precision level
matching a machining condition such as rough machining or finish
machining on the precision level setting screen or by programming,
the parameters suitable for the condition can be automatically
calculated to perform machining.
On this screen, the parameter sets for emphasis on velocity (precision
level 1) and emphasis on precision (precision level 10) can be set.
Set the following parameters:

•

Acceleration rate of acceleration/deceleration before

interpolation

•

Acceleration change time (bell-shaped)

•

Allowable acceleration change value for each axis in velocity
control based on acceleration change under jerk control

•

Allowable acceleration change value for each axis in acceleration
change under jerk control in successive linear interpolation
operations

•

Ratio of the change time of the rate of change of acceleration in
smooth bell-shaped acceleration/deceleration before interpolation

•

Allowable acceleration rate

•

Acceleration rate of acceleration/deceleration after interpolation

•

Corner speed difference

•

Maximum

feedrate

•

Items that can be set freely (2 items)

For details of each parameter, see the descriptions of AI contour
control and jerk control.
By setting bit 0 (MPR) of parameter No. 13601 to 1, this screen can be
hidden.
For the method of setting a precision level, see the description of the
precision level selection screen in Subsection 11.2.14.

Procedure for machining parameter tuning

Procedure

Set the MDI mode.

Press function key

3 Press soft key [M-TUN] to display the machining parameter

tuning screen.

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Fig. 12.4.10 (a) Machining parameter tuning screen (10.4-inch)

Fig. 12.4.10 (b) Machining parameter tuning screen (10.4-inch)

4 Move the cursor to the position of a parameter to be set, as

follows:
Press page key

, and cursor keys

and /or

to move the cursor to the parameter.

Key in desired data then press the

key on the MDI panel.

6 When data is input, a RMS value is found according to the

precision level parameters. (The precision level can be changed
on the precision level selection screen or parameter setting
screen.) If a RMS value calculation fails, a warning (indicating
that automatic setting failed) is displayed.

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Repeat steps 4 and 5 until all machining parameters are set.

In addition to the setting method described above, a parameter
setting method using soft keys is available. Pressing soft key
[INIT] displays the standard value (recommended by FANUC) of
the item selected by the cursor in the key input buffer. Pressing
soft key [EXEC] initializes the item to the standard value.
Pressing soft key [GROUP INIT] initializes all items of a group
(emphasis on velocity or emphasis on precision) selected by the
cursor to the standard values.

The table below indicates the initial settings.

Table 12.4.10 (a) Initial settings

AI contour control

Setting item

Emphasis

on velocity

(LV1)

Emphasis

on precision

(LV10)

Unit

Acceleration rate of acceleration/deceleration before interpolation
<ACC FOR BIPL>

4902.000 1042.000 mm/sec

Acceleration change time (bell-shaped) <ACC CHG TIME(BELL)>

msec

Allowable acceleration change value <JERK ACC DIFF>

mm/sec

Allowable acceleration change value in successive linear
interpolation operations <JERK ACC DIFF(LIN)>

0 0

mm/sec

Ratio of the change time of the jerk control <JERK ACC RATIO>

Allowable acceleration rate <MAX AACELERATION>

2977.000

596.000

mm/sec

Time constant for acceleration/deceleration after interpolation
<T-CON AIPL ACC/DEC>

24 24

msec

Corner speed difference <CORNER FEED DIFFER>

1000

400

mm/min

Maximum cutting speed <MAX CUT FEEDRATE>

10000

mm/min

Explanation
- Look-ahead acceleration/deceleration before interpolation

Set an acceleration rate for a linear portion in look-ahead
acceleration/deceleration before interpolation.
Unit of data: mm/sec

, inch/sec

, deg/sec

(machine unit)

The parameter set on the machining parameter tuning screen is
reflected in the following parameters:
Parameter No. 13610 (velocity-emphasized parameter)
Parameter No. 13611 (precision-emphasized parameter)

Moreover, the following parameter is also set according to the
precision level:
Parameter No. 1660: Maximum allowable acceleration rate for each
axis in acceleration/deceleration before interpolation

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- Acceleration change time (bell-shaped)

Set a time constant for a bell-shaped portion in acceleration/
deceleration before look-ahead interpolation.
Unit of data: ms

The parameter set on the machining parameter tuning screen is
reflected in the following parameters:
Parameter No. 13612 (velocity-emphasized parameter)
Parameter No. 13613 (precision-emphasized parameter)

Moreover, the following parameter is also set according to the
precision level:
Parameter No. 1772: Time constant for bell-shaped look-ahead

acceleration/deceleration before interpolation of
constant acceleration time type

CAUTION

A set time constant is applied to all axes. So, a
modification made to this item changes the settings
for all axes.

- Allowable acceleration change value in velocity control based on acceleration

change under jerk control

Unit of data: mm/sec

, inch/sec

, deg/sec

(machine unit)

Set an allowable acceleration change value per ms for each axis in
velocity control based on acceleration change under jerk control.

The parameter set on the machining parameter tuning screen is
reflected in the following parameters:
Parameter No. 13614 (velocity-emphasized parameter)
Parameter No. 13615 (precision-emphasized parameter)

Moreover, the following parameter is also set according to the
precision level:
Parameter No. 1788: Allowable acceleration change value for each

axis in velocity control based on acceleration
change under jerk control

NOTE

This setting item is displayed only when the jerk
control function is enabled.

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- Allowable acceleration change value for each axis in velocity control based on

acceleration change under jerk control in successive linear interpolation
operations

Unit of data: mm/sec

, inch/sec

, deg/sec

(machine unit)

Set an allowable acceleration change value per ms for each axis in
velocity control based on acceleration change under jerk control in
successive linear interpolation operations.

The parameter set on the machining parameter tuning screen is
reflected in the following parameters:
Parameter No. 13616 (velocity-emphasized parameter)
Parameter No. 13617 (precision-emphasized parameter)

Moreover, the following parameter is also set according to the
precision level:
Parameter No. 1789: Allowable acceleration change value for each

axis in velocity control based on acceleration
change under jerk control in successive linear
interpolation operations

CAUTION

1 For an axis with 0 set in this parameter, the

parameters (allowable acceleration change value
in velocity control based on acceleration change
under jerk control: No. 13614, No.13615) are valid.

2 For an axis with 0 set in the parameter (allowable

acceleration change value in velocity control based
on acceleration change under jerk control: No.
13614, No.13615), velocity control based on
acceleration change is disabled, so that this
parameter has no effect.

NOTE

This setting item is displayed only when the jerk
control function is enabled.

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OPERATION

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- Ratio of the change time of the jerk control in smooth bell-shaped

acceleration/deceleration before interpolation

Unit of data: %

Set the ratio (in %) of the change time of jerk control to the change
time of acceleration in smooth bell-shaped acceleration/deceleration
before interpolation.

The parameter set on the machining parameter tuning screen is
reflected in the following parameters:
Parameter No. 13618 (velocity-emphasized parameter)
Parameter No. 13619 (precision-emphasized parameter)

Moreover, the following parameter is also set according to the
precision level:
Parameter No. 1790: Ratio of the change time of the jerk control in

smooth bell-shaped acceleration/deceleration
before interpolation

NOTE

This setting item is displayed only when the jerk
control function is enabled.

- Allowable acceleration rate

Set an allowable acceleration rate in acceleration-based speed
determination.
Unit of data: mm/sec

, inch/sec

, deg/sec

(machine unit)

The parameter set on the machining parameter tuning screen is
reflected in the following parameters:
Parameter No. 13620 (velocity-emphasized parameter)
Parameter No. 13621 (precision-emphasized parameter)

Moreover, the following parameter is also set according to the
precision level:
Parameter No. 1735: Allowable acceleration rate for each axis

applicable to the deceleration function based
on acceleration in circular interpolation

Parameter No. 1737: Allowable acceleration rate for each axis

applicable to the deceleration function based
on acceleration in AI contour control

CAUTION

When bit 0 (MCR) of parameter No. 13600 is set to
1, the deceleration function based on acceleration
in circular interpolation is not set.

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- Time constant for acceleration/deceleration after interpolation

Set a time constant for acceleration/deceleration after interpolation.
Unit of data: ms

The parameter set on the machining parameter tuning screen is
reflected in the following parameters:
Parameter No. 13622 (velocity-emphasized parameter)
Parameter No. 13623 (precision-emphasized parameter)

Moreover, the following parameter is also set according to the
precision level:
Parameter No. 1769:

Time constant for acceleration/deceleration
after cutting feed interpolation

- Corner speed difference

Set an allowable corner speed difference used for speed determination.
Unit of data: mm/sec, inch/sec, deg/sec (machine unit)

The parameter set on the machining parameter tuning screen is
reflected in the following parameters:
Parameter No. 13624 (velocity-emphasized parameter)
Parameter No. 13625 (precision-emphasized parameter)

Moreover, the following parameter is also set according to the
precision level:
Parameter No. 1783: Allowable speed difference for each axis in

automatic corner deceleration based on speed
difference

- Maximum cutting speed

Set a maximum cutting speed for each axis.
Unit of data: mm/sec, inch/sec, deg/sec (machine unit)

The parameter set on the machining parameter tuning screen is
reflected in the following parameters:
Parameter No. 13626 (velocity-emphasized parameter)
Parameter No. 13627 (precision-emphasized parameter)

Moreover, the following parameter is also set from the precision level:
Parameter No. 1432: Maximum cutting feedrate for each axis in the

AI contour control mode

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