Fagor CNC 8055i FL EN - Page 258

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Installation manual
CNC 8055
CNC 8055i
6.
MACHINE PARAMETERS
SOFT: V02.2X
Spindle parameters
"Low passing" filter.
The "low passing" filter is used to limit the jerk by making the movements smoother although it has
the drawback that it rounds the corners slightly.
Anti-resonance filter (notch filter).
The "anti-resonance" (notch) filter must be used when the machine has a resonance frequency to
be eliminated.
CNC start-up with Fagor filters active.
If on CNC start-up, Fagor filters are active on any of the axes and axis parameter SMOTIME (P58)
is other than 0 on the same axis, the CNC displays the following error message:
• Parameter TYPE=2 is incompatible with general parameter SMOTIME.
FREQUEN (P69)
The meaning of this parameter depends on the type of filter being applied.
On "low passing" and "FAGOR" filters, it indicates the break point frequency or frequency where
the amplitude drops 3 dB or it reaches 70% of the nominal amplitude.
-3dB = 20 log (A/Ao) ==> A = 0,707 Ao
For the "anti-resonance" (notch) filter, it indicates the mid frequency or frequency at which the
resonance reaches its maximum value.
NORBWID (P70)
Normal bandwidth.
Ao
f
FREQUEN
0,707·Ao (-3dB)
A
ff
1
2
FREQUEN
A
Ao
0,707·Ao (-3dB)
After start-up, if the value of the indicated parameter is not changed, the CNC will cancel that parameter
automatically.
Possible values
Between 0 and 500.0 Hz.
Default value: 30