HB-37420-810-01-25F-EN SMX100 Installation manual.docx Page 96 of 260
Version: 25F
• The filter time can be variably set between 0 and 64 in steps of 8. The dimension is
"msec". In order to determine the response time of the overall system, the filter times must
be added to the specified response times of the SMX systems (see chapter 11).
Safety note:
• The manufacturer's data (MTTF
D
, FIT-numbers, etc.) must be used for a safety related
assessment of the partial system "Sensors".
• If the manufacturer demands specific diagnoses to be able to guarantee the specified
safety related characteristic values, these must be checked with respect to the specific
encoder as specified in the table "Specific diagnostic measures for position and speed
sensors". If in doubt, the matter must be clarified by the manufacturer.
• The DC-values listed in the table must be used conservatively and compliance with the
boundary conditions (see table under „Remarks“) must be ensured.
• In order to determine the DC-value for safety functions with standstill monitoring
a frequency assessment of the dynamic status may be required. A DC of 90 % may here
be used a s a guide value.
• 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)
• By choosing a suitable resolution of the sensor system a sufficiently low tolerance with
regard to the corresponding cut-off thresholds for the individual safety functions must be
ensured.
• When using the encoder input filter one must consider the extension of the response time
when assessing the safety related function.
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