January 2012 6.20 Commissioning 1115
From the step response of the actual velocity (V act) you determine the
maximum possible acceleration (incl. 10 % safety margin).
Example:
The internal oscilloscope measured the following rise-time value on the
machine:
t
an
= 0.125 s
The nominal speed vnom (can be read from the oscilloscope) is a
machine specific parameter, and was determined to be 5000 mm/min in this
example.
Calculation of acceleration:
a
Vnom
t
an
66 000⋅
----------------------------- -=
Value, parameter Unit Description
am/s
2
Acceleration
Vnom mm/min Nominal velocity
t
on
sRise time
a
5000
mm
min
-------------
0.125 s 66 000⋅
------------------------------------------
0.61
m
s
2
------
==
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