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Analog Diagnostics (NI 9351 Only)

Version:
    Last Modified: May 15, 2018

    Overcurrent Diagnostic Response Time

    Overcurrent fault

    2 ms

    Discrepancy Diagnostic Response Time

    To calculate discrepancy diagnostic response times, use the following equation.

    Discrepancy response time = discrepancy time + discrepancy constant + 2 ms

    • Discrepancy time is a user-configurable parameter in the Functional Safety Editor.
    • Use the following table to determine the discrepancy constant based on discrepancy time.
      Table 1. Discrepancy Constant
      Discrepancy Time Discrepancy Constant
      1000 µs ≤ discrepancy time ≤ 16,383 µs 2 µs
      16,500 µs ≤ discrepancy time ≤ 2,047.875 ms 126 µs
      2,125 ms ≤ discrepancy time ≤ 1800 s 126 ms

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