Installation manual
HB-37420-810-01-25F-EN PSC1-C-100 Installation manual - V2.2.docx Page 58 of 201
Version: 25F
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
Optionally, the expansion modules in the PSC1-C100 series have one (PSC1-E-21-SDM1,
PSC1-E-23-SDM2) or two encoder interfaces (PSC1-E-22-SDM1-2, PSC1-E-24-SDM2-2) per
axis.
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:
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.
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