Fagor CNC 8060 - Page 139

Installation manual
CNC 8060
CNC 8065
MACHINE PARAMETERS.
2.
(REF: 1402)
·139·
Machine parameters for the axes. Work sets.
This parameter does not the movements programmed in G00 or the threads. Movements
in G0 are carried out at the feedrate set in parameter G00FEED. The threads are executed
at the programmed feedrate.
The rapid traverse cannot exceed the value set in axis parameters G00FEED or FRAPIDEN
of the channel or the maximum feedrate set by PLC (variable (V.)PLC.G00FEED). Rapid
traverse cannot exceed the value set in axis parameter MAXFEED of the channel and the
active feedrate set by PLC (variable (V.)PLC.F).
GAIN SETTING.
PROGAIN
Proportional gain.
Parameter valid for linear and rotary axes and spindles.
Parameter valid for analog drive, Sercos and simulated.
Possible values: From 0.0 to 100.0 (1000/min).
Default value: 1.
Associated variable: (V.)[ch].MPA.PROGAIN[set].xn
This parameter sets the following error (difference between the theoretical instantaneous
position and the actual - real - axis position) for a particular feedrate.
FFWTYPE
Pre-control type
Parameter valid for linear and rotary axes and spindles.
Parameter valid for analog drive, Sercos and simulated.
Possible values: OFF / Feed Forward / AC-Forward / Feed Forward + AC-Forward.
Default value: OFF
Associated variable: (V.)[ch].MPA.FFWTYPE[set].xn
This parameter indicates the type of pre-control for adjusting the gains.
In order to be able to modify the override while threading (parameter THREADOVR), the feed
forward must be active and higher than 90%. Feed forward may be defined with a lower value
than 90% in parameter FFGAIN and may be modified later on from the PLC using variables.
Variable. Machine parameters. Rapid feed.
(V.)PLC.G00FEED G00FEED (axis) FRAPIDEN (axis) G00 G01, G02, ···
0 10000 0 10000 10000
0 10000 6000 10000 6000
4000 10000 6000 4000 4000
7000 10000 6000 7000 6000
12000 10000 6000 10000 6000
The scale for the following error of 800 µm per square.
Example:
To obtain a following error (E) of 1 mm for a feedrate (F) of 1000 mm/min. (a gain of 1).
F = E x PROGAIN
F / E = 1000 (mm/min) / 1 (mm) = 1000 / min
PROGAIN = 1