Installation manual
CNC 8035
4.
MACHINE PARAMETERS
Spindle parameters
(SOFT M: V15.3X)
(S
OFT T: V16.3X)
·156·
ORDER (P67)
Filter order. The down ramp is dampened down; the larger the number the greater the drop.
When applying a filter, it must be set with an order of ·3·. Before setting it to another value, consult
with Fagor Automation's technical service.
Using a FAGOR filter does not admit values greater than 15.
When detecting that the FAGOR filter order is too high for the filter configuration (according to
parameters FREQUEN and LOOPTIME), on power-up it will issue the message: "It is recommended
to lower the order of the frequency filter".
It is recommended to start from low values (e.g.: ORDER=5) and go on increasing this value until
that message is displayed.
When using filters, it is recommended to use low values of PLC parameter PLC CPUTIME (e.g.:
0, 1), to assign to the CPU the strictly necessary amount of power.
TYPE (P68)
Filter type. Three types of filters may be used, namely "low passing", "anti-resonance (band
rejection, notch filter)" and "FAGOR (low passing)". To obtain a good machining quality, all the axes
and the spindle interpolating with each other should be defined with the same type of filter and with
the same frequency. For the spindle, the filters are only applied in M19 and in rigid tapping where
the spindle is interpolated with the Z axis.
When defining anti-resonance filters, parameters NORBWIDTH and SHARE must also be set.
"Low passing" filter.
Value Filter type
[0 - 4] Low passing filter
[0 - 4] Notch filter (anti-resonance)
[0 - 30] FAGOR filter
Default value: 0 (the filter is not applied).
If the filter has been designed wrong, it will not be applied.
The filters are not applied while moving with an electronic handwheel or a mechanical
handwheel or while tracing. It is recommended not to activate these filters on
machines carrying out movements against a hard stop.
Value Meaning
0 "Low passing" filter.
1 "Anti-resonance" (notch) filter.
2 "FAGOR (low passing)" filter.
Default value: 0
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.
Ao
f
FREQUEN
0,707·Ao (-3dB)
A
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