Detailed Description
2.1 Spindle modes
Basic logic functions: Spindles (S1)
12
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Spindle actual speed display and spindle behavior with G96, G961
DB31, ... DBX61.4 (axis/spindle stationary)
Machine data:
MD36060 $MA_STANDSTILL_VELO_TOL
defines the speed at which the spindle is considered "stationary".
The speed set in the machine data should be dimensioned
so that NC/PLC IS:
DB31, ... DBX61.4 (Axis/Spindle stationary) is sure to be
pending on standstill.
If the NC/PLC interface signal:
DB31,...DBX61.4 (Axis/Spindle stationary)
registers and no position control is active for the spindle then the actual speed is shown as
zero on the operator interface and is read as zero by the system variables $AA_S[n].
References:
/FB1/Descriptions of Functions, Basic Machine; Various Interface Signals and Functions (A2)
Spindle behavior with G96, G961
Constant cutting rate
•
At the start of machining (transition from
G0
to
Gx
) and after NC stop,
G60
(exact stop,
modal) and
G09
(exact stop, non-modal) the system waits until the actual speed has
reached the speed setpoint tolerance range before starting the path.
NC/PLC IS:
DB31, ... DBX83.5 (nAct = nSet)
is then set.
•
NC PLC IS:
DB31, ... DBX83.5 (nAct = nSet)
and
DB31, ... DBX83.1 (Setpoint speed limited)
are also set to defined values even if severe speed changes are specified
(transverse axis travels towards position 0).
•
If the speed drops below the minimum speed
or when NC/PLC IS:
DB31, ... DBX61.4 (Axle/Spindle stationary)
is detected, NC/PLC IS:
DB31, ... DBX83.5 (nAct = nSet)
is reset (e.g., for an emergency machine strategy).
•
A path operation, which has started (
G64
, rounding), is not interrupted.
Machine data:
MD35500 $MA_SPIND_ON_SPEED_AT_IPO_START
can also influence spindle behavior significantly.
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 ...