Siemens Sinumerik 810T Manuel d'utilisateur Page 35

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01.93 2 NC Machine Data
2.11 Input units
A rotary axis is used.
p= 18000 pulses per revolution
f= 5
b= 1/2 10
-3
degrees
MD 368* =
360 degrees
b
MD 364* = p · f · 4 = 18000 · 5 · 4 = 360000
=
360 degrees
1/2 10
-3
degrees
= 720000
Since the values exceed 65000, both values must be divided by a common factor (e.g.
factor = 100).
MD 368* = 7200 MD 364* = 3600
MD 4590 Number of pulses spindle encoder
Number of pulses of the spindle encoder without multiplication. The value affects the
maximum possible speed of the spindle.
Formula for the maximum speed:
n
max =
60 · n
limit
N
n
limit
= limit frequency of the encoder in Hz
N = number of pulses per spindle revolution
Example for n
limit
= 1 MHz
Nn
max
[
1/min
]
1024 (58000)
16000 = max
2500 (24000)
16000 = max
5000 12000
9000 6666
©
Siemens AG 1990 All Rights Reserved 6ZB5 410-0DM02 2-25
SINUMERIK 810 GA3/820 GA3 (IA)
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