Siemens SINUMERIK 840C Installation Instructions Manual page 251

6 NC Machine Data (NC MD), NC Setting Data (NC SD)
6.5 Spindle-specific MD (spindle data)
in NC MD 403* and 0 in NC MD 404* to 410*. In the case of gear units with fewer than eight
gears, 0 should be entered for the non-existing gears (a value other than 0 for a non-existent
gear will cause the spindle to come to standstill).
Gear input signals (see Interface Description Part 2).
Note:
Gear stages not used must be assigned the value zero.
Setpoint speed
403*-410*
Default value
500 - 4 000
With these parameters it is then possible to achieve a very fine adjustment of the set speed
ratio (e.g. to the speed ratios of belt drives which are not always precisely known).
411*-418*
Default value
see table
Assignment
Gear
NC MD
Default
By entering the minimum gear speeds, the gear-speed range is defined. On the basis of the
programmed spindle speed, the NC can now transfer the required gear and a request signal
for a gear change to the PLC. Should the speed ranges for the various gears overlap, the NC
choses the appropriate gear on the basis of the fewest number of gear changes required to
arrive at the required speed (selection by "Automatic gear selection").
_______
1) The input resolution is 0.1 rev/min, if MD 520* bit 3 = 1.
6–66
More user manuals on
[V]
10V
Gear: 1
Maximum spindle speed digital (as from SW 3)
Lower input limit
0
Minimum speed gear stages 1-8
Lower input limit
+0
1 2
411* 412*
50 500
ManualsBase.com
[rev/min]
2 3
Upper input limit
100 000
Upper input limit
99 999
3 4 5
413* 414* 415*
1000 2000 2000
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Siemens AG 1992 All Rights Reserved
09.95
Spindle speed for
each gear
Input values
Active
at once
Units
rev/min or 0.1 rev/min
Active on
NC Stop
Units
rev/min 1)
6 7 8
416* 417* 418*
2000 2000 2000
6FC5197- AA50
SINUMERIK 840C (IA)