Safe Cam Track - Siemens SINUMERIK 840D sl Function Manual

Safety functions integrated in the system/drive
7.8 Safety software cams and safety cam track (SN)
MD36936 $MA_SAFE_CAM_POS_PLUS[n] for 840D sl
p9536 SI Motion SCA (SN) plus cam position (Control Unit) for SINAMICS S120
MD36937 $MA_SAFE_CAM_POS_MINUS[n] for 840D sl
p9537 SI Motion SCA (SN) minus cam position (Control Unit) for SINAMICS S120
When booting, the parameterization (parameter assignments) are checked in each monitoring
channel. In the case of parameterization errors (a condition is not fulfilled), Alarm 27033 or
F01687 is output after the control has been booted.
7.8.2

Safe Cam Track

Description
The "Safe Cam Track" function is used as an alternative to Safe Cams (refer to Chapter "Safe
software cams (4 cam pairs) (Page 159)"). The user has 4 cam tracks at his disposal. Up to
15 cams can be evaluated on a cam track. A total of 30 cams are available. The information
as to which cam of a cam track is presently active is saved in the SGA "cam range" (4 bits for
each cam track) and can together with the SGA "cam track" be evaluated in the safe
programmable logic (SPL).
Further, the cams are available as SGA "Safe Cam range bits".
Preconditions
The following prerequisites apply to the "Safe Cam Track" function:
● The axis/axes must have been safely referenced (user agreement)
● Either the "Safe Cams" function or the "Safe Cam Track" function may only be used
alternatively, i.e. simultaneous enable in the machine data or parameters
MD36903 $MA_SAFE_CAM_ENABLE / p9503 SI Motion SCA (SN) enable (Control Unit)
and
MD36901 $MA_SAFE_FUNCTION_ENABLE / p9501 SI Motion enable safety functions
(Control Unit)
is not permissible, and results in Alarm 27033 / C01681 "Invalid parameterization".
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Function Manual, 12/2017, 6FC5397-4BP40-6BA1
Safety Integrated