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 Fact (FG62 + Fdecel)
where Fdecel is calculated from:
a = acceleration (see NC MD 276*]
tipo = IPO cycle [ms]
Fdecel a tipo
––––––– = ––– x ––––––– x 60
min m ms
–––
s2
No speed reduction takes place at the first block limit if F1 FG62 + Fdecel.
No speed reduction to F3 takes place at the second block limit if F2 FG62 + Fdecel.
FG62 values (MD3) smaller than Fdecel are not sensible.
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SINUMERIK 840C (IA)