Detailed description
2.12 Block descriptions
Basic logic functions: PLC basic program solution line (P3 sl)
204
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
2.12.20
FC 17: YDelta star/delta changeover
Description of Functions
The block for star/delta changeover controls the timing of the defined switching logic such
that the changeover can be performed in either direction even when the spindle is running.
This block may be used only for digital main spindle drives and must be called separately for
each spindle.
The changeover operation is implemented via 2 separate contactors in a sequence involving
4 steps:
Step 1:
Deleting the interface signal DB31, ... DBX21.5 (Motor selection done) in the related
axis-DB and register the changeover process via A with
DB31, ... DBX21.3 (Motor selection).
Step 2:
As soon as the return message NST DB31, ... DBX93.7 (Pulse enabled) and the
acknowledgment of the announced motor selection from the drive have appeared, the
currently energized contactor drops out.
Step 3:
The other contactor is energized after the time period set by the user in parameter
"TimeVal" has elapsed.
Step 4:
After a further delay, the changeover is signaled to the drive with NST
DB31, ... DBX21.5 (Motor selection done) reported.
Figure 2-28 Star/delta changeover
For more detailed information about motor speed adjustments, please see:
References:
/FB1/Function Manual, Basic Functions; Spindles (S1);
Chapter "Configurable gear adjustments"
/FB1/Function Manual Basic functions; Velocities, Actual/Set point system, Regulation (G2)
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 ...