Measuring System Adaptation For Axes And Spindles (As From Sw 4) - Siemens SINUMERIK 840C Installation Instructions Manual

09.95
5.2.4
Explanation
Notes
Parameter table
Parameter
Position control
resolution
Pulse multiplication
EXE/611D/HMS
Grating constant
Spindle pitch
Measuring system reso-
lution
Pulses per revolution
Gear factor
Number of revolutions
on load site
Number of revolutions
on motor side
Pulses variable
incremental weighting
Traversing path variable
incremental weighting
Note
Formulas used
for calculation
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SINUMERIK 840C (IA)
More user manuals on
Measuring system adaptation for axes and spindles
(as from SW 4)
This function is used to automatically calculate the position control resolution and
measuring system resolution (optimization of the closed position control loop).
You will find the function under the softkey path Machine data/NC MD/Axis (or
Spindle) measuring system data. After you have entered the parameters (see
table below), move to the NC machine data Pulses var. incremental weighting
(Axis: NC MD 3640/Spindle NC MD: 4550) or Traversing path var. incremental
weighting (Axis: NC MD 3680/Spindle: NC MD 4560) and trigger calculation by
pressing the toggle key.
If the data do not correspond, a number sign "#" is displayed next to the machine
data "Pulses var. incremental weighting" and "Traversing path var. incremental
weighting". As soon as the values have been calculated a tick "n" is displayed.
Machine data f: Pulse multiplication EXE/611D/HMS (Axis: NC MD
11160/Spindle: NC-MD 4580) should be matched in such a way that the condition
measuring system resolution < position control resolution is given.
This table lists the parameters for the measuring system adaptation.
Symbol
b 18000.0–3/5240.0–3 Internal computational resolution of control
f
g
l
m
p
r
r1
r2
u
v
Machine data 39000–39120 and 24210–24220 are used for internal calculations
only.
Measuring system resolution (axis) : m +
Measuring system resolution (spindle) : m +
Measuring system resolution
Ratio :
Position control resolution
Gearbox factor : r + r1
ManualsBase.com
5 Machine Data Dialog (MDD – as from SW 3)

5.2.4 Measuring system adaptation for axes and spindles (as from SW 4)

NC-MD Meaning
axis/spindle
11160/4580 Multiplier input
39120/– Distance between marks on a linear scale
39120/– Leadscrew pitch
– Maximum resolution of measuring system-
The value is used as the basis
39080/24220 Number of encoder pulses per revolution
– Speed ratio between number of revolutions
on load side (r1) and number of revolutions
on motor side (r2)
39000/24200 Actual speed of axis or spindle
39040/24210 Actual speed of motor for axis or spindle
3640/4550 Position control resolution weighting
3680/4560 Measuring system resolution weighting
4 x p x f
or m +
å m + v u
b
r2
r x l
r x g
4 x p x f
r x 360 degr.
4 x p x f
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