Maximum Spindle Speed - Siemens SINUMERIK 840D Function Manual

Program code
N10 IDS=2 WHENEVER TRUE DO $R11=$AC_SMAXVELO_INFO[1]
N15 IDS=3 WHENEVER TRUE DO $R12=$AC_SMINVELO[1]
N20 IDS=4 WHENEVER TRUE DO $R13=$AC_SMINVELO_INFO[1]
N25 IDS=5 WHENEVER TRUE DO $R14=$AC_SPIND_STATE[1]
See also
Spindle in setpoint range (Page 827)
18.8.6

Maximum spindle speed

Maximum spindle speed: parameterizable machine-related limit value
The maximum machine-dependent spindle speed – for protecting the spindle chuck or the tool,
for example – is parameterized using the following machine data:
MD35100 $MA_SPIND_VELO_LIMIT (maximum spindle speed)
The spindle speed is monitored by the NC in the actual values, i.e. taking into account the
current gear stage.
Note
Machine manufacturer
It is recommended that changes to the maximum spindle speed in machine data MD35100 only
be made when the spindle is stationary. This is particularly important for spindles that are active
after NC reset (see also MD35040 SPIND_ACTIVE_AFTER_RESET). Otherwise alarm 22100
may be output.
Further information
● Manufacturer documentation: List Manual, "Detailed Machine Data Description"
● User documentation: Diagnostics Manual
Responses to violation
If the actual speed of a spindle exceeds the parameterized maximum spindle speed by more
than the tolerance value,
"Actual spindle speed" > MD35100 $MA_SPIND_VELO_LIMIT (maximum
spindle speed) +
MD35150 $MA_SPIND_DES_VELO_TOL (spindle speed tolerance value)
the following effects can be seen on the NC side.
● DB31, ... DBX83.0 = 1 (speed limit exceeded)
● Alarm 22100 "Chuck speed exceeded" is displayed
● All axes and spindles of the channel are stopped
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA
S1: Spindles
18.8 Spindle monitoring
831