Siemens SINUMERIK 840D sl Function Manual

Detailed Description
2.6 Spindle monitoring
Basic logic functions: Spindles (S1)
88 Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Tolerance range for setpoint speed
MD35150 $MA_SPIND_DES_VELO_TOL = 0.1
The spindle actual speed may deviate +/- 10% from the setpoint speed.
The spindle setpoint speed is derived from the programmed speed taking the current limits
into account.
Any limitation or increase of the programmed speed
is indicated either by axial NC/PLC IS:
DB31, ... DBX83.1 (Set speed limited)
or
DB31, ... DBX83.2 S (Set speed increased)
and does not prevent the axis reaching the speed tolerance range.
If the spindle lies inside the tolerance range,
axial NC/PLC IS:
DB31, ... DBX83.5 (Spindle in setpoint range)
is set to 1 at the VDI interface.
Special case:
If the speed tolerance is set to 0, axial NC/PLC IS:
DB31, ... DBX83.5 (Spindle in setpoint range)
is permanently set to 1 and no path control is performed.
Speed change
Path control only takes place at the start of the traverse block and only if a speed change
has been programmed. If the speed tolerance range is violated, e.g., due to an overload, the
path movement is not automatically brought to a standstill.

Siemens SINUMERIK 840D sl Specifications

General

Control Type	CNC
Number of Axes	Up to 31
Max Number of Channels	10
Interfaces	Ethernet, PROFIBUS, PROFINET, USB
Interpolation	5-axis interpolation
Operating Temperature	0°C to 45°C
Relative Humidity	Up to 95% (non-condensing)
Display	TFT color display, various sizes
Programming Languages	DIN/ISO
Safety Features	Safety Integrated
PLC	Integrated PLC S7-300
Drive Interface	SINAMICS S120
Data Storage	CF card, USB
Operating System	Windows-based