G2: Velocities, setpoint / actual value systems, closed-loop control
7.4 Setpoint/actual-value system
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
363
Figure 7-3
Maximum speed setpoint
However, due to control processes, the axes should not reach their maximum velocity (MD32000
$MA_MAX_AX_VELO) at 100% of the speed setpoint, but at 80% to 95%.
In case of axes, whose maximum speed is attained at around 80% of the speed setpoint range, the default value
(80%) of the machine data:
MD32000 $MA_MAX_AX_VELO (maximum axis velocity)
.
7.4.5
Actual-value processing
Actual-value resolution
In order to be able to create a correctly closed position control loop, the control system must be informed of the
valid actual-value resolution. The following axis-specific machine data are used for the purpose, which are
partially specified from the drive (MD31000, 31010, 31020, 31025).
The control calculates the actual-value resolution from the settings made in the MD. The control parameter sets
of the position control are identified as servo parameter sets.
The machining process of the machine forms the basis of the position actual-value acquisition.
Depending on the type of axis (linear axis, rotary axis) and the type of actual-value acquisition (directly at the
machine, indirectly at the motor), the following machine data must be parameterized to calculate the actual-value
resolution:
Direct measuring system (DM) is on machine directly:
Load-side encoder
Indirect measuring system (IM) is on motor indirectly:
Motor-side encoder
Q
W>V@
0'&75/287B/,0,7
0'0$;B$;B9(/2
0D[D[LVYHORFLW\
6SHHGVHWSRLQW
6HW
0D[VSHHGVHWSRLQW
Содержание SINUMERIK 828D Turning
Страница 34: ...Basic Functions 34 Function Manual 09 2011 6FC5397 0BP40 2BA0 ...
Страница 146: ...A3 Axis Monitoring Protection Zones 2 6 Data lists Basic Functions 146 Function Manual 09 2011 6FC5397 0BP40 2BA0 ...
Страница 328: ...F1 Travel to fixed stop 6 5 Data lists Basic Functions 328 Function Manual 09 2011 6FC5397 0BP40 2BA0 ...
Страница 816: ...K2 Axis Types Coordinate Systems Frames 10 9 Data lists Basic Functions 816 Function Manual 09 2011 6FC5397 0BP40 2BA0 ...
Страница 1198: ...P4 PLC for SINUMERIK 828D 14 6 Function interface Basic Functions 1198 Function Manual 09 2011 6FC5397 0BP40 2BA0 ...
Страница 1752: ...Appendix 20 2 Overview Basic Functions 1752 Function Manual 09 2011 6FC5397 0BP40 2BA0 ...
Страница 1774: ...Glossary Basic Functions 1774 Function Manual 09 2011 6FC5397 0BP40 2BA0 ...