Detailed description
2.3 Setpoint /actual-value system
Basic logic functions: Velocities, Setpoint/Actual Value Systems, Closed-Loop Control (G2)
50
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Note
These machine data are not required for encoder matching (path evaluation).
However, they must be entered correctly for the setpoint calculation!
Otherwise the required servo gain (K
V
) factor will not be set.
In machine data:
MD31050 $MA_DRIVE_AX_RATIO_DENOM
one enters the load rotations, in machine data:
MD31060 $MA_DRIVE_AX_RATIO_NUMERA
the motor rotations.
Coding of the machine data
The indices of the following machine data are coded at the encoder [Encoder no.]:
Encoder 0 or 1
Encoder-dependent machine data
Meaning
MD31070 $MA_DRIVE_ENC_RATIO_DENOM[n]
(Measuring gear denominator)
MD31080 $MA_DRIVE_ENC_RATIO_NUMERA[n]
(Measuring gear numerator)
MD31000 $MA_ENC_IS_LINEAR[n]
(Direct measuring system, linear scale)
MD31010 $MA_ENC_GRID_POINT_DIST[n]
(Distance between reference marks on
linear scales)
MD31020 $MA_ENC_RESOL[n]
(Encoder pulses per revolution)
for rotary encoder
MD31040 $MA_ENC_IS_DIRECT[n]
(Encoder is connected directly at the
machine)
MD34320 $MA_ENC_INVERS[n]
(Length measurement system is inverse)
Further machine data without index
MD30200 $MA_NUM_ENCS
(Number of encoders)
MD30300 $MA_IS_ROT_AX
(rotary axis)
MD31030 $MA_LEADSCREW_PITCH
(Leadscrew pitch)
Index [n] of the following machine data depend on the servo parameter sets of the position
controller, with which the actual-value resolution is calculated automatically in the control:
MD DRIVE_AX_...[servo parameter set no.] : 0-5
Parameter-set-dependent machine data
Description
MD31050 $MA_DRIVE_AX_RATIO_DENOM[n]
(Denominator load gear unit)
MD31060 $MA_DRIVE_AX_RATIO_NUMERA[n]
(Numerator load gear unit)
Summary of Contents for SINUMERIK 840D sl
Page 282: ...Index Basic logic functions Acceleration B2 64 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 388: ...Basic logic functions Travel to fixed stop F1 Function Manual 11 2006 6FC5397 0BP10 2BA0 52 ...
Page 962: ...Index Basic logic functions Emergency Stop N2 20 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1704: ...Constraints Basic logic functions Spindles S1 94 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1716: ...Index Basic logic functions Spindles S1 106 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1996: ...Index Basic logic functions Tool Offset W1 208 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 2150: ...Table of contents Basic logic functions Appendix 4 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 2184: ...Glossary Basic logic functions Appendix 38 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...