12

Test pulse error

ABB · AC500-S Safety

What does 12 mean?

An error was detected during the generation or detection of test pulses on an I/O channel. Test pulses are critical for diagnostics and ensuring the integrity of safety circuits, especially in detecting wiring faults. This fault indicates a potential wiring problem or sensor issue, compromising safety functionality.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Ensure the I/O module is correctly configured for test pulse generation and evaluation.

Source: ABB AC500-S Safety
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