HB-37350-810-01-51F-EN SMX Installation manual.docx Page 81 of 234
Version: 50F
Safety note:
• The manufacturer's data (MTTF
D
, FIT-numbers, etc.) must be used for a safety related
assessment of the partial system "Sensors".
• The DC-values listed in the table must be used conservatively and compliance with the
boundary conditions (see table under „Remarks“) must be ensured.
• According to the applicable standards, fault exclusions are permitted. The boundary
conditions mentioned in this context must permanently be met.
• If several sensor systems are required for the correct function of a single safety function,
their partial values must be correctly merged by following the chosen method. This applies
also for a combination of digital and analog sensors (e.g. safely reduced speed with open
safety door = door contact + encoder for speed detection)
4.2.3.1 Exemplary connection of analog sensors
By using suitable sensors and careful wiring of the sensor
OI e acc. to EN ISO 13849-1 can be achieved.
The analog current inputs are all equipped with the fixed loading resistor of 500Ohm. For analog
voltage inputs this resistor is omitted.
Safety note:
• PI e acc. to EN ISO 134849-1 is achieved when using two non-reactive sensors, for which
Common Cause faults can be ruled out.
To Next Page
Loading...