G2: Velocities, setpoint / actual value systems, closed-loop control
7.4 Setpoint/actual-value system
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
353
7.4
Setpoint/actual-value system
7.4.1
General
Control loop
A control loop with the following structure can be configured for every closed-loop controlled axis/spindle:
Figure 7-1
Block diagram of a control loop
Setpoint output
A setpoint telegram can be output for each axis/spindle. The setpoint output to the actuator is realized from the
SINUMERIK 840D sl.
Actual-value acquisition
A maximum of two measuring systems can be connected for each axis/spindle, e.g. a direct measuring system
for machining processes with high accuracy requirements and an indirect measuring system for highspeed
positioning tasks.
The number of encoders used is recorded in the machine data:
MD30200 $MA_NUM_ENCS (number of encoders)
In the case of two actual-value branches, the actual value is acquired for both branches.
The active measuring system is always used for position control, absolute value calculation and display. If both
measuring systems are activated at the same time by the PLC interface, positioning measuring system 1 is
chosen internally by the control.
Reference point approach is executed by the selected measuring system.
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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 ...