Detailed description
2.12 Block descriptions
Basic logic functions: PLC Basic program powerline (P3 pl)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
217
Restrictions
Star/delta changeover on digital main spindle drives initiates a process, which contains
closed-loop control sequences. Since the closed-loop control system supports automatic
star/delta changeover, certain restrictions should be noted:
•
Owing to the automatic deactivation of the pulse in the drive, simultaneously with the NST
DB31, ... DBX93.7 (Pulse enabled) the NST DB31, ... DBX61.7
(current regulator active) and DB31, ... DBX61.6 (speed regulator active) are deactivated.
•
In case of rotating spindle and activated position controller the spindle with NST DB31, ...
DBX61.5 (position controller active) is changed over from star to delta, then it leads to the
alarm 25050 "Contour monitoring".
•
Once the star/delta changeover has been initiated with FC17, it cannot be delayed by the
user, e.g., by waiting until the star/delta contactors change over during the course of
operation. The user can implement this signal interaction with PLC logic.
Declaration of the function
STL representation
VAR_INPUT
YDelta:
BOOL ;
//Star = 0, delta = 1
SpindleIFNo:
INT ;
//Machine axis number
TimeVal:
S5TIME ;
//Time value
TimerNo :
INT ;
//User timer for changeover time
END_VAR
VAR_OUTPUT
Y:
BOOL ;
//Star contactor
Delta:
BOOL ;
//Delta contactor
END_VAR
VAR_IN_OUT
Ref:
WORD ;
//Block status word (instance)
END_VAR
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 ...