
B-63323EN-1/03 1.AXIS CONTROL
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immediately if an emergency stop is applied or if a servo alarm is
issued.
- Chopping activated by signal input
Before chopping can be started, the chopping axis, reference position,
upper dead point, lower dead point, and chopping feedrate must be set
using the parameter screen
- Feedrate up to point R
When chopping is started, the tool moves at the rapid traverse rate
(parameter No. 1420) up to point R.
For override, the chopping feedrate override signal is valid. When a
chopping feedrate override of 100% is specified, the feedrate is
clamped to 100%. Parameter CRO (bit 5 of parameter No. 1181) can be
used to enable rapid traverse override instead of chopping rate
override.
- Feedrate from point R
When chopping is started, the tool moves at the chopping feedrate
specified by the program or that specified for parameter No. 1195 from
point R until chopping is canceled. If the feedrate exceeds the
maximum chopping feedrate (parameter No. 1197), it is clamped to the
maximum chopping feedrate. If the maximum chopping feedrate is 0,
the chopping feedrate is clamped to the rapid traverse rate.
The chopping feedrate can be overridden over a range from 0% to
150%, using the chopping feedrate override signal.
- Setting chopping data
Set the following chopping data:
- Chopping axis: Parameter No.1191
- Reference point (point R) : Parameter No.1192
- Upper dead point: Parameter No.1193
- Lower dead point: Parameter No.1194
- Chopping feedrate: Parameter No.1195
- Maximum chopping feedrate: Parameter No.1197
- Chopping setting screen
A chopping axis, point R, top dead point, bottom dead point, and
chopping rate can be specified on the chopping screen. Point R, a top
dead point, bottom dead point, and chopping rate can be changed
during chopping. Parameter CAF (bit 7 of parameter No. 1001) can be
used to restrict chopping axis and chopping rate inputs. In addition,
input/output signals related to chopping can be monitored.