09.95
6 NC Machine Data (NC MD), NC Setting Data (NC SD)
6.5 Spindle-specific MD (spindle data)
MD 403*
MD 404*
MD 405*
MD 448*
Voltage
[volts]
Speed [rev/min]
10
MD 411*
MD 412*
MD 413*
U
max
If 3rd gear has been engaged, the new S value must be lower than the contents of MD 413* in
order for the NC to initiate a gear change.
U
max
: maximum setpoint speed voltage (MD 468*)
Acceleration time constant for eight gears
419*-426*
Default value
Lower input limit
Upper input limit
Units
800
+0
50 000
1 ms
Active on
NC Stop
Gear
1
2
3
4
5
6
7
8
NC MD
419*
420*
421*
422*
423*
424*
425*
426*
The control provides the setpoint for acceleration in the form of a ramp that is based on the
contents of these MD. The MD thus act as variable ramp-function generators. They are set by
measuring the interval from zero speed to maximum speed for each gear. NC MD 419*-426*
can be set to zero when the drive actuator is equipped with an integrated ramp-function
generator.
Notes:
•
There are two acceleration time constants for every stage:
–
Acceleration time constant without position controller (MD 419* to 426*)
–
Acceleration time constant without position controller (MD 478* to 485*)
•
In control mode the time constants are used without position control.
In positioning mode the time constants are used with position control.
©
Siemens AG 1992 All Rights Reserved 6FC5197- AA50
6–67
SINUMERIK 840C (IA)
Содержание SIMODRIVE 611-D
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