Siemens SINUMERIK 840C Installation Instructions Manual page 353

6 NC Machine Data (NC MD), NC Setting Data (NC SD)
6.7 Axis-specific MD 2 (axial data 2)
1292*
Motor current on equilibration (as from SW 3)
Default value
0
-700 (as from SW 4)
MD 1292* is used to define the value of an additional torque of a motor used to compensate
for stationary loads (e.g. pull of gravity on hanging axes) (this MD is only active for digital feed
spindle drives).
Note: As from SW 4, for 8 parameter sets
1296*
Period of the learning signal (as from SW 4.4)
Default value
0
The learning signal period of neural quadrant error compensation can be changed with this
data. This also alters the required traversing range and the learning time.
Note:
With default value 0 and values under 500 ms are used a permanently set period length of 2 s
is used. Up to SW 4.3 this time cannot be parameterized and is permanently set to 1 s.
1300*
Default value
1 000
Active: After POWER ON
The basic distance between the reference marks for distance coded linear scales entered in
multiples of the grating pitch (division period).
1304*
Default value
1
Active: After Power On
External pulse multiplication factor (e.g. external EXE error) for linear measuring systems with
distance coded reference points.
The number of signal periods (grid lines) that are generated from one division period of the of
the linear scale (grating pitch) by external interpolation digital electronics.
1308*
Servo gain factor 4th parameter set (as from SW 4)
Default value
1 666
These MD have the same meaning as MD 252*, see also "Functional Descriptions: Parameter
set switchover".
6–168
Lower input limit
-70
700 (as from SW 4)
Lower input limit
0
Basic distance for distance coding
Lower input limit
0
External pulse multiplication
Lower input limit
1
Lower input limit Upper input limit
0
80 000 (as from SW 5)
©
Siemens AG 1992 All Rights Reserved
Upper input limit
0.1 % of the
70
power section
Upper input limit
16 000
Upper input limit
16 000
Upper input limit
100
10 000
SINUMERIK 840C (IA)
09.95
Active on
NC Stop
Units
current
Active on
NC Stop
Units
ms
Active on
Power On
Units
–
Active on
Power On
Units
–
Active on
NC Stop
Units
-1
0.01s
6FC5197- AA50