7 ELG-Specific Signals (DB 29)
01.93
7.3 Signals to ELG (DB 29)
Example of how velocity changes with high acceleration of the leading axis:
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
Set speed following axis
a a a a a a
a a a a a a
a a a a a a
a a a a a a
V
max
a a a a
a a a a
a a a a
a a a a
V
2
a a a a
a a a a
a a a a
a a a a
a a a a
V
1
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
V
LA
speed of the LA
–––––––––––––––––––––
K
Ü
speed ratio
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
Path with ACCELERATION
LIMITATION SYNCHRONOUS
ACTIVE = 1 signal
Max. permitted
acceleration of the FA
Path with
ACCELERATION
LIMITATION
SYNCHRONOUS
ACTIVE = 0 signal
a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a
FA reaches new
synchronous speed
a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a
FA reaches new
synchronized position
a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a
LA accelerates
more then FA
a a
a a
a a
t
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
SYNCHRONISM
FINE
The acceleration of the following axis is limited by MD 276*.
Note:
The meaning of the signal in GA2, software version 1 from what it was in software version 6.
The following notes apply to software version 6.
•
If acceleration limitation is deselected, the leading axes and following axis run only with
synchronous speed and no longer with positional synchronismafter acceleration processes.
The positional differences added up during the acceleration are incorporated in the
synchronism error. If the synchronism error becomes greater than the relevant tolerance
bands, the SYNCHRONISM FINE/COARSE signals are no longer set.
•
The acceleration limitation for the following axis ensures that the following axis runs in
positional synchronism with the leading axes again even after acceleration processes.
Positional deviations that occur during the acceleration are added up and corrected after
the acceleration process; that is to say the following axis accelerates for a slightly longer
time than the leading axes and thus catches them up (see figure).
FA 1: m=0
FA 2: m=4
FA 3: m=8
7
–
14
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Siemens AG 1991 All Rights Reserved 6ZB5 410-0HE02
SINUMERIK 880 (PJ)