Gantry Axes - Siemens SINUMERIK 840D sl Function Manual

03.06
Note
SI continues to work with the configured encoder.
11.3

Gantry axes

Stop responses Stop A, B, C for gantry axes are initiated as fast as possible for all
of the axes in the group. However, if unacceptable offsets result because of the
differing braking behavior of the axes, then stop response Stop D should be config-
ured.
11.4 Parking axis
When the park state is activated (using the interface signal "parking"), then the
system automatically cancels the pulses using an external STOP A. After the park
state has been removed, the external STOP A is automatically de-activated again.
When the "parking" function is selected, actual value acquisition and the position
measuring system monitoring are de-activated for an axis/spindle. The NCK actual
value is frozen and mechanical actual value changes are no longer detected. This
also applies to the actual value acquisition of the two safety monitoring channels
NCK and SINAMICS S120.
The user can align the actual value acquisition of the safety monitoring channels
after re-selecting parking by again referencing/synchronizing to the machine posi-
tion.
Parking an axis with absolute reference (SE/SN)
As a result of the fact that the actual value sensing of the two safety monitoring
channels NCK and SINAMICS S120 has been disabled, then the absolute refer-
ence of the axis is no longer detected in a safety-relevant fashion. The safety mon-
itoring channels then respond as follows:
– Alarms 27000/C01797 are displayed "Axis no longer safely referenced"
– SGA "Axis safely referenced" cancelled on NCK and drive side
These alarms are only displayed for axes for which safety monitoring functions with
absolute reference are activated, i.e. for SE and SN. Alarms are not displayed for
axes that do not have these monitoring functions.
Machine data SAFE_PARK_ALARM_SUPPRESS can be used to suppress Alarms
27000/C01797 until parking has been withdrawn.
© Siemens AG, 2006. All rights reserved
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 03.2006 Edition
Interaction with Other Functions
11.3 Gantry axes
11-483