HB-37350-810-01-50F-EN PSC1-C-10 Installation manual V2.1.docx Page 58 of 189
Version: 50F
4.2.2 Sensors for speed and/or position acquisition
4.2.2.1 General safety-related layout of sensor interface for position and/or speed
Different safety levels can be achieved depending on the encoder type and encoder
combination. The safety assessment for the related sub-system is as follows:
I
A
O
A
L
A
I
B
O
B
L
B
m
m
i
i
c
i
m
i
m
Sensor PES Aktuator
Sensor
A
Sensor
B
Dual-channel sensor system with separate signal processing in two channels, diagnostics by means of cross
comparison in the PES
Sensor system with single and dual-channel sub-system (example incremental encoder). Diagnostics by means of
separate signal processing in two channels and cross comparison in the PES as well as further specific diagnostics.