Siemens SINUMERIK 840C User Manual
Page 193
6 NC Machine Data (NC MD), NC Setting Data (NC SD)
12.93
6.2 General machine data (general data)
Note:
The reduction speed with G62 is not quite reached. The error tolerance band is described as
follows.
FG62
=
Reduction speed
Fact
=
”Actual reduction speed” reached
Fdecel
=
Braking step (speed reduction per Ipo cycle)
FG62 F
act
(FG62 + F
decel
)
where F
decel
is calculated from:
a
=
acceleration (see NC MD 276*]
tipo
=
IPO cycle [ms]
F
decel
a
tipo
––––––– =
–––
x
––––––– x
60
min
m
ms
–––
s
2
No speed reduction takes place at the first block limit if F1 FG62 + F
decel
.
No speed reduction to F3 takes place at the second block limit if F2 FG62 + F
decel
.
FG62 values (MD3) smaller than F
decel
are not sensible.
6–8
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Siemens AG 1992 All Rights Reserved 6FC5197- AA50
SINUMERIK 840C (IA)