Siemens SINUMERIK MC Commissioning Manual page 192

Safety functions integrated in the drive
4.19 Safe actual value acquisition
Special feature in the case of linear motors
The motor encoder (linear scale) of linear motors also acts as load measuring system. Only one
measuring system is required for this reason. The system is connected by means of a Sensor
Module or directly via DRIVE-CLiQ.
Figure 4-28
2-encoder system
The failsafe actual values for a drive are provided by 2 separate encoders. The actual values
are transferred to the Control Unit via DRIVE-CLiQ.
For motors without a DRIVE-CLiQ interface, the connection is made using additional Sensor
Modules (see encoder types).
Figure 4-29
192
Example of a single-encoder system
Example of a 2-encoder system on a linear axis via a ball screw
Safety Integrated (with SINAMICS S120)
Commissioning Manual, 02/2020, A5E46305916B AB